US 5,759,729 AGranted

Photochromic electrostatic toner compositions

AssigneeXerox Corporation

InventorsTrevor I. Martin, Carol A. Jennings, Eric G. Johnson, John F. Oliver

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Abstract

Disclosed is a toner composition for the development of electrostatic latent images which comprises particles comprising a mixture of a resin and a photochromic material. Another embodiment of the present invention is directed to a liquid developer composition for the development of electrostatic latent images which comprises a nonaqueous liquid vehicle and a photochromic material, wherein the liquid developer has a resistivity of from about 10.sup.8 to about 10.sup.11 ohm-cm and a viscosity of from about 25 to about 500 centipoise. Yet another embodiment of the present invention is directed to a liquid developer composition for the development of electrostatic latent images which comprises a nonaqueous liquid vehicle, a charge control agent, and toner particles comprising a mixture of a resin and a photochromic material.

Claims20

Dependent claims

A toner composition for the development of electrostatic latent images consisting essentially of a mixture of (1) a first component which is a resin, (2) a second component which is a photochromic material selected from the group consisting of (a) spiropyrans of the formula ##STR27## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each, independently of the others, are hydrogen atoms, alkyl groups, aryl groups, arylalkyl groups, silyl groups, nitro groups, cyano groups, halide atoms, amine groups, hydroxy groups, alkoxy groups, aryloxy groups, alkylthio groups, arylthio groups, aldehyde groups, ketone groups, ester groups, amide groups, carboxylic acid groups, or sulfonic acid groups, wherein two or more R groups can be joined together to form a ring, (b) spirooxazines, (c) spirothiopyrans, (d) bisimidozole compounds, (e) bis-tetraphenylpyrrole compounds, (f) hydrozine compounds, (g) aryl disulfide compounds, (h) stilbene compounds, (i) aromatic azo compounds, and (j) mixtures thereof, (3) a third component which is a charge control agent, (4) an optional fourth component which is a colored dye, and (5) an optional fifth component which is a colored pigment.

bis-tetraphenylpyrrole compounds;
hydrazine compounds;
aryl disulfide compounds;
stilbene compounds;
aromatic azo compounds;
spiro2H-1-benzopyran-2,2'-indoline!;
6-acetyl-1',3'3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-allyl-5'-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
8-allyl-3',3'-dimethyl-6'-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-indoli ne!;
8-allyl-6-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline! ;
8-allyl-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!:
8-allyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-amino-5,7-dichloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2' -indoline!;
6-amino-7-hydroxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-amino-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
5-amino-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-amino-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-amino-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-amino-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-amino-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-amino-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
1'-amyl-5-bromo-3',3'-dimethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2' -indoline!;
1-amyl-3',3'-dimethyl-8-methoxyspiro2H-1-benzopyran-2,2'-indoline!;
1'-amyl-3',3-dimethyl-6-methoxy-8-nitrospiro2H-1-benzopyran-2,2'-indoline !;
1'-amyl-3',3-dimethyl-5',6-dinitro-8-methoxyspiro2H-1-benzopyran-2,2'-ind oline!;
1'-amyl-3',3-dimethyl-8-methoxy-5,5',6-trinitrospiro2H-1-benzopyran-2,2'- indoline!;
1'-amyl-3,3'-dimethyl-6-trinitrospiro2H-1-benzopyran-2,2'-indoline!;
6-bromo-1'-butyl-3',3'-dimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-bromo-1'-butyl-3',3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline !;
8-bromo-5'-chloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzo pyran-2,2'-indoline!;
8-bromo-5'-chloro-7-hydroxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!:
5-bromo-5'-chloro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
6-bromo-5'-chloro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5-bromo-6'-chloro-8-methoxy-6-nitro-1',3',3',7'-tetramethylspiro2H-1-benz opyran-2,2'-indoline!;
5-bromo-5'-chloro-6-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5-bromo-5'-chloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5-bromo-7'-chloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
6-bromo-5'-chloro-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
8-bromo-5'-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
5-bromo-4',6'-dichloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benz opyran-2,2'-indoline!;
5-bromo-4',7'-dichloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benz opyran-2,2'-indoline!;
5-bromo-5',7'-dichloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benz opyran-2,2'-indoline!;
6-bromo-5'-chloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5-bromo-3',3'-diethyl-8-methoxy-1'-methyl-6-nitrospiro2H-1-benzopyran-2,2 '-indoline!;
5-bromo-5',8-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2 '-indoline!;
5-bromo-7',8-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2 '-indoline!;
6-bromo-5',8-dimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
6-bromo-3',3'-dimethyl-1'-ethylspiro2H-1-benzopyran-2,2'-indoline!;
6-bromo-3',3'-dimethyl-1'-ethyl-8-methoxyspiro2H-1-benzopyran-2,2'-indoli ne!;
5-bromo-1',3'-dimethyl-3'-ethyl-6-methoxy-8-nitrospiro2H-1-benzopyran-2,2 '-indoline!;
5-bromo-1',3'-dimethyl-3'-ethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2 '-indoline!;
8-bromo-3',3'-dimethyl-1'-ethyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline !;
5-bromo-3',3'-dimethyl-1'-isoamyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2 ,2'-indoline!;
5-bromo-1',3'-dimethyl-6-methoxy-8-nitro-3'-phenylspiro2H-1-benzopyran-2, 2'-indoline!;
5-bromo-1',3'-dimethyl-8-methoxy-6-nitro-3'-phenylspiro2H-1-benzopyran-2, 2'-indoline!;
5-bromo-3',3'-dimethyl-6-methoxy-8-nitro-1'-phenylspiro2H-1-benzopyran-2, 2'-indoline!;
5-bromo-3',3'-dimethyl-8-methoxy-6-nitro-1'-phenylspiro2H-1-benzopyran-2, 2'-indoline!;
8-bromo-3',3'-dimethyl-6-nitro-1'-propylspiro2H-1-benzopyran-2,2'-indolin e!;
6-bromo-3',3'-dimethyl-1'-propylspiro2H-1-benzopyran-2,2'-indoline!;
5-bromo-1'-dimethylamino-8-methoxy-3'-methyl-6-nitro-3'-phenylspiro2H-1-b enzopyran-2,2'-indoline!;
5-bromo-5',6-dinitro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2 '-indoline!;
5-bromo-3',3'-diphenyl-8-methoxy-1'-methyl-6-nitrospiro2H-1-benzopyran-2, 2'-indoline!;
5-bromo-4',6'-diphenyl-8-methoxy-6-nitro-1',3',3'-trimeihylspiro2H-1-benz opyran-2,2'-indoline!;
5-bromo-4'-fluoro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5-bromo-5'-fluoro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
8-bromo-7-hydroxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5-bromo-8-methoxy-6-nitro-1',3',3',4',7'-pentomethylspiro2H-1-benzopyran- 2,2'-indoline!;
5-bromo-8-methoxy-6-nitro-1',3',3',5',7'-pentamethylspiro2H-1-benzopyran- 2,2'-indoline!;
5-bromo-6-methoxy-8-nitro-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5-bromo-6-methoxy-8-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5-bromo-8-methoxy-6-nitro-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5-bromo-8-methoxy-6-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5-bromo-8-methoxy-6-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2' -indoline!;
5-bromo-8-methoxy-6-nitro-1',3',3'5'-tetramethylspiro2H-1-benzopyran-2,2' -indoline!;
5-bromo-8-methoxy-6-nitro-1',3',3',6'-tetramethylspiro2H-1-benzopyran-2,2 '-indoline!;
5-bromo-8-methoxy-6-nitro-1',3',3',7'-tetramethylspiro2H-1-benzopyran-2,2 '-indoline!;
5-bromo-6-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
5'-bromo-6-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
5-bromo-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
5'-bromo-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
6-bromo-8-methoxy-5-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
5-bromo-8-methoxy-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro2H-1- benzopyran-2,2'-indoline!;
5-bromo-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-bromo-5'-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-bromo-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-bromo-8-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline! ;
8-bromo-6-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline !;
5-bromo-6-nitro-4',6',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran -2,2'-indoline!;
5-bromo-6-nitro-4',7',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran -2,2'-indoline!;
5-bromo-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-bromo-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-bromo-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-bromo-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-bromo-5'-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-bromo-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
1'-butyl-6-chloro-3',3'-dimethyl-8-methoxyspiro2H-1-benzopyran-2,2'-indol ine!;
1'-butyl-3',3'-dimethylspiro2H-1-benzopyran-2,2'-indoline!;
1'-butyl-3',3'-dimethyl-6,8-dinitrospiro2H-1-benzopyran-2,2'-indoline!;
1'-butyl-3',3'-dimethyl-8-methoxyspiro2H-1-benzopyran-2,2'-indoline!;
8-carbomethoxy-5'-chloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
5'-carbomethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
8-carbomethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
6-carbomethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-carbomethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-carboxy-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
5'-carboxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
6-carboxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-carboxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-carboxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-chloro-6,8-dibromo-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
6'-chloro-5,7-dimethoxy-6-nitro-1',3'3',7'-tetramethylspiro2H-1-benzopyra n-2,2'-indoline!;
5'-chloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5'-chloro-7,8-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
7'-chloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5'-chloro-5,7-dimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
6-chloro-5',8-dimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
6-chloro-7',8-dimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
6-chloro-3',3'-dimethyl-1'-ethyl-8-methoxyspiro2H-1-benzopyran-2,2'-indol ine!;
5-chloro-1',3'-dimethyl-8-methoxy-6-nitro-3'-phenylspiro2H-1-benzopyran-2 ,2'-indoline!;
6-chloro-3',3'-dimethyl-8-methoxy-1'-phenylspiro2H-1-benzopyran-2,2'-indo line!;
6-chloro-3',3'-dimethyl-8-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-indoli ne!;
5'-chloro-5.6-dinitro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5'-chloro-6,6'-dinitro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2 ,2'-indoline!;
5'-chloro-6,8-dinitro-7-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
7'-chloro-5,6-dinitro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5'-chloro-6,6'-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
5'-chloro-6,8-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
6-chloro-5',8-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
5'-chloro-7-ethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
5-chloro-8-ethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
5'-chloro-8-ethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
5'-chloro-8-ethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-chloro-8-ethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-chloro-8-fluoro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
5'-chloro-8-fluoro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-chloro-6-formyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-chloro-6-hydroxy-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2' -indoline!;
5'-chloro-6-iodo-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
5'-chloro-8-iodo-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
5'-chloro-7-methoxy-6-nitro-1',3',3',5-tetramethylspiro2H-1-benzopyran-2, 2'-indoline!;
5-chloro-8-methoxy-6-nitro-1',3'3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
5'-chloro-6-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5'-chloro-7-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5'-chloro-8-methoxy-5-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5'-chloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
6-chloro-5'-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
7'-chloro-6-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
7'-chloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5'-chloro-6-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
5-chloro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline) ;
5'-chloro-8-methoxy-1',3',3-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
6-chloro-5'-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline !;
6-chloro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-chloro-7'-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
5'-chloro-8-methoxy-1',3',3'-trimethyl-5,6,6'-trinitrospiro2H-1-benzopyr an-2,2'-indoline!;
5'-chloro-6-nitro-1',3',3',5,7-pentamethylspiro2H-1-benzopyran-2,2'-indol ine!;
5'-chloro-6-nitro-1',3',3',5,8-pentamethylspiro2H-1-benzopyran-2,2'-indol ine!;
6-chloro-8-nitro-1',3',3',5,7-pentamethylspiro2H-1-benzopyran-2,2'-indoli ne!;
7-chloro-6-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline !;
4'-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'chloro-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6'-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-chloro-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7'-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-chloro-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-chloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-chloro-6-(.beta.-nitrovinyl)-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5'-chloro-1',3',3',5,7-pentamethylspiro2H-1-benzopyran-2,2'-indoline!;
6-chloro-4',7',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5-chloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline;
5'chloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-chloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-chloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-chloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!:
6-cyano-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6,8-diallyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5,6-dibromo-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
6,8-dibromo-5'-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
6,8-dibromo-5-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
6,8-dibromo-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
4',7'-dichloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyr an-2,2'-indoline!;
5',8-dichloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5,6-dichloro-3',3'-dimethyl-8-ethoxy-1'-phenylspiro2H-1-benzopyran-2,2'-i ndoline!;
5,7-dichloro-1',3'-dimethyl-6-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-in doline!;
5,7-dichloro-3',3'-dimethyl-6-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-in doline!;
4',7'-dichloro-5,6-dinitro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyr an-2,2'-indoline!;
4',7'-dichloro-7,8-dinitro-6-methoxy-1',3',3'-trimethylspiro2H-1-benzopyr an-2,2'-indoline!;
5,7-dichloro-5',6-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
5,7-dichloro-4',6'-diphenyl-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyra n-2,2'-indoline!;
5,6-dichloro-8-ethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
4',7'-dichloro-8methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5,7-dichloro-5'-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5,7-dichloro-7'-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
4',7'-dichloro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
5,6-dichloro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
5',6-dichloro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
6,7'-dichloro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
5,7-dichloro-6-nitro-1',3',3',4',7'-pentamethylspiro2H-1-benzopyran-2,2'- indoline!;
5,7-dichloro-6-nitro-1',3',3',5',7'-pentamethylspiro2H-1-benzopyran-2,2'- indoline!;
5,7-dichloro-6-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2 '-indoline!;
5,7-dichloro-6-nitro-4',5',6',7'-tetrafluoro-1',3',3'-trimethylspiro2H-1- benzopyran-2,2'-indoline!;
4',6'-dichloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
4',7'-dichloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
5,7-dichloro-6-nitro-1',3',3',5'-tetramethylspiro2H-1-benzopyran-2,2'-ind oline!;
5,5'-dichloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
5',6-dichloro-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
5,7-dichloro-6-nitro-1 ',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5,8-dichloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline !;
5',7'-dichloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne;
5',8-dichloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
6,8-dichloro-5-nitro-1,3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
7,8-dichloro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
5,7-dichloro-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro2H-1-benzo pyran-2,2'-indoline!;
5',6-dichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5,7-dichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5',7-dichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6,8-dichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7,8dichloro-1',3',3'-trimethylspiro2H 1-benzopyran-2,2'-indoline!;
4',7'-diethoxy-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
3',3'-diethyl-6-methoxy-1'-methyl-8-nitrospiro2H-1-benzopyran-2,2'-indoli ne!;
3',3'-diethyl-8-methoxy-1'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-indoli ne!;
3',3'-diethyl-1'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline!;
1',3'-diethyl-3'-methyl-4',7',8'-trimethoxyspiro2H-1-benzopyran-2,2'-indo line!;
7-diethylamino-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5,7-dihydroxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6,8-diiodo-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5',8'-dimethoxy-3',3'-dimethyl-1'-ethylspiro2H-1-benzopyran-2,2'-indoline !;
5,7-dimethoxy-3',3'-dimethyl-5',6-dinitro-1'-isoamylspiro2H-1-benzopyran- 2,2'-indoline!;
5,7-dimethoxy-1',3'-dimethyl-6-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-i ndoline!;
5,7-dimethoxy3',3'-dimethyl-6-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-in doline!;
1',8-dimethoxy-5,6-dinitro-3'-methyl-3'-phenylspiro2H-1-benzopyran-2,2'-i ndoline!;
4',7'-dimethoxy-6,8-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5,7-dimethoxy-6,8-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-ind oline!;
5',8-dimethoxy-5,6-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
6',8-dimethoxy-5,6-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
7',8-dimethoxy-5,6-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
4',7'-dimethoxy-8-ethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
5',7'-dimethoxy-8-ethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
5,7-dimethoxy-4'-fluoro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5,7-dimethoxy-5'-fluoro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
1',8-dimethoxy-3'-methyl-6-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-indol ine!;
5,7-dimethoxy-6-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
4',7'-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
4',7'-dimethoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
5',6-dimethoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
5',8-dimethoxy-5-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
5',8-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
6,7'-dimethoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
7',8-dimethoxy-5-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
7',8-dimethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
5,7-dimethoxy-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro2H-1-benz opyran-2,2'-indoline!;
5,7-dimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5',8-dimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7',8-dimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3'-dimethyl-6,8-dinitro-3'-ethylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-6,8-dinitro-1'-ethylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-5,6-dinitro-1'-hexadecyl-8-methoxyspiro2H-1-benzopyran-2,2 '-indoline!;
3',3'-dimethyl-6,8-dinitro-1'-isoamylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-5,6-dinitro-1'-isoamyl-8-methoxyspiro2H-1-benzopyran-2,2'- indoline!;
3',3'-dimethyl-6,8-dinitro-1'-isoamyl-7-methoxyspiro2H-1-benzopyran-2,2'- indoline!;
1',3'-dimethyl-5,6-dinitro-8-methoxy-3'-phenylspiro2H-1-benzopyran-2,2'-i ndoline!, 1',3'-dimethyl-5',6-dinitro-8-methoxy-3'-phenylspiro2H-1-benzopyran-2,2'- indoline!;
3,3'-dimethyl-5,6-dinitro-8-methoxy-1'-phenylspiro2H-1-benzopyran-2,2'-in doline!;
3,3'-dimethyl-6,8-dinitro-7-methoxy-1'-phenylspiro2H-1-benzopyran-2,2'-in doline!;
3',3'-dimethyl-7,8-dinitro-6-methoxy-1'-phenylspiro2H-1-benzopyran-2,2'-i ndoline!;
1',3'-dimethyl-6,8-dinitro-3'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-6,8-dinitro-1'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-6,8-dinitro-1'-propylspiro2H-1-benzopyran-2,2'-indoline!;
1',3'-dimethyl-3',7'-diphenyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'- indoline!;
3',3'-dimethyl-8-ethoxy-1'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
1',3'-dimethyl-3'-ethylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-1-dimethyl-1'-ethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3'-dimethyl-3'-ethyl-8-methoxyspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-1'-ethyl-8-methoxyspiro2H-1-benzopyran-2,2'-indoline!;
1',3'-dimethyl-3'-ethyl-6-methoxy-8-nitrospiro2H-1-benzopyran-2,2'-indoli ne!;
1',3'-dimethyl-3'-ethyl-8-methoxy-5-nitrospiro2H-1-benzopyran-2,2'-indoli ne!;
1',3'-dimethyl-3'-ethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-indoli ne!;
3',3'-dimethyl-1'-ethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-indoli ne!;
1',3'-dimethyl-3'-ethyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-1'-ethyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-1'-ethyl-8-nitrospiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-1'-hexadecyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-1'-(.beta.-hydroxyethyl)-6-nitrospiro2H-1-benzopyran-2,2'- indoline!;
3,3'-dimethyl-1'-isoamyl-8-methoxy-5,5',6-trinitrospiro2H-1-benzopyran-2, 2'-indoline!;
3',3'-dimethyl-1'-isoamyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-1-isoamyl-5',6,8-trinitrospiro2H-1-benzopyran-2,2'-indolin e!;
3',3'-dimethyl-1'-isopropyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-in doline!;
1',3'-dimethyl-6-methoxy-8-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-indol ine!;
1',3'-dimethyl-8-methoxy-6-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-indol ine!;
3',3'-dimethyl-6-methoxy-8-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-indol ine!;
3',3'-dimethyl-7-methoxy-6-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-indol ine!;
3',3'-dimethyl-8-methoxy-5-nitro-1-phenylspiro2H 1-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-8-methoxy-6-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-indol ine!;
3',3'-dimethyl-8-methoxy-6-nitro-1'-propylspiro2H-1-benzopyran-2,2'-indol ine!;
1',3'-dimethyl-8-methoxy-3'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-8-methoxy-1'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-8-methoxy-1'-propylspiro2H-1-benzopyran-2,2'-indoline!;
1',3'-dimethyl-6-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
1',3'-dimethyl-8-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
3 ',3'-dimethyl-6-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-1-phenylspiro2H-1-benzopyran-2,2'-indoline!;
3',3'-dimethyl-1'-propylspiro2H-1-benzopyran-2,2'-indoline!;
1'-dimethylamino-5,6-dinitro-8-methoxy-3'-methyl-3'-phenylspiro2H-1-benzo pyran-2,2'-indoline!;
1'-dimethylamino-8-methoxy-3'-methyl-6-nitro-3'-phenylspiro2H-1-benzopyra n-2,2'-indoline!;
1'-dimethylamino-3'-1-methyl-6-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-i ndoline!;
5,6-dinitro-8-methoxy-1',3',3',4',7'-pentamethylspiro2H-1-benzopyran-2,2' -indoline!;
5,6-dinitro-8-methoxy-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
5,6-dinitro-8-methoxy-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-ind oline!;
5,6-dinitro-8-methoxy-1',3',3',5'-tetramethylspiro2H-1-benzopyran-2,2'-in doline!;
5,6'-dinitro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!, 5,6-dinitro-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
5',8-dinitro-6-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
6,7'-dinitro-8-methoxy-1 ',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6,8-dinitro-5'-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
6,8-dinitro-7-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
5,6-dinitro-8-methoxy-1',3',3'-trimethyl-4',6',7'-triphenylspiro2H-1-benz opyran-2,2'-indoline!;
6,8-dinitro-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
6,8-dinitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
6,8-dinitro-1',3',3',7'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
5',6-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6,8-dinitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
4',6'-diphenyl-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2 ,2'-indoline!;
3',3'-diphenyl-1'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline!;
4',6'-diphenyl-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoli ne!;
5',7'-diphenyl-6-nitro-1',3',3-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
6-ethoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8 -ethoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-ethoxy-1',3',3',4',7'-pentamethylspiro2H-1-benzopyran-2,2'-indoline!;
8-ethoxy-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-ethoxy-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-ethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-ethoxymethyl-6-nitro-1',3'3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
3'-ethyl-8-methoxy-3'-methyl-1'-phenylspiro2H-1-benzopyran-2,2'-indoline! ;
3'-ethyl-3'-methyl-6-nitro-1'-phenylspiro2H-1-benzopyran-2,2'-indoline!, 8-ethyl-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
4'-fluoro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5'-fluoro-6-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!, 5'-fluoro-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
4'-fluoro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-fluoro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-fluoro-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-fluoro-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-fluoro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-fluoro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-formyl-7-hydroxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-formyl-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-formyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-formyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3',3',5,5',7-hexamethyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline!;
1',3',3',5,7,8-hexamethyl-6-nitrospiro2H-1-benzopyran-2,2'-indoline!;
5'-(.beta.-hydroxyethyl)-8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-be nzopyran-2,2'-indoline!;
5'-(.beta.-hydroxyethyl)-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran -2,2'-indoline!;
5'-(.beta.-hydroxyethyl)-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2 ,2'-indoline!;
5'-(.beta.-hydroxyethyl)-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
6-hydroxy-8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
7-hydroxy-5'-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! ;
7-hydroxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-hydroxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-hydroxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-hydroxymethyl-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
6-iodo-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-i odo-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
1-methoxy-3'-methyl-6-nitro-3'-phenylspiro2H-1-benzopyran-2,2'-indoline!;
5'-methoxy-6-nitro-1',3',3',5,7-pentamethylspiro2H-1-benzopyran-2,2'-indo line!;
5'-methoxy-6-nitro-1',3',3',5,8-pentamethylspiro2H-1-benzopyran-2,2'-indo line;
7'-methoxy-6-nitro-1',3',3',5,7-pentamethylspiro2H-1-benzopyran-2,2'-indo line!;
7'-methoxy-6-nitro-1',3',3',5,8-pentamethylspiro2H-1-benzopyran-2,2'-indo line!;
6-methoxy-8-nitro-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
6-methoxy-8-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2-in doline!;
7-methoxy-6-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
8-methoxy-5-nitro-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
8-methoxy-5-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
8-methoxy-6-nitro-3-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
8-methoxy-6-nitro-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
8-methoxy-6-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
6-methoxy-8-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indolin e!;
6-methoxy-8-nitro-1',3',3',5'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
6-methoxy-8-nitro-1',3',3',6'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
6-methoxy-8-nitro-1',3',3',7'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
7-methoxy-6-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indolin e!;
7-methoxy-6-nitro-1',3',3',5'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
8-methoxy-5-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indolin e!;
8-methoxy-5-nitro-1',3',3',6'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
8-methoxy-5-nitro-1',3',3',7'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
8-methoxy-6-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indolin e!;
8-methoxy-6-nitro-1',3',3',4'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
8-methoxy-6-nitro-1',3',3',5'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
8-methoxy-6-nitro-1',3',3',6'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
8-methoxy-6-nitro-1',3',3',7'-tetramethylspiro2H-1-benzopyran-2,2'-indoli ne!;
8-methoxy-6-nitro-1',3',3'-triethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7'-methoxy-8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-methoxy-5-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-methoxy-5'-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-methoxy-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro2H-1-benzopyr an-2,2'-indoline!;
8-methoxy-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro2H-1-benzopyr an-2,2'-indoline!;
8-methoxy-1',3',3',4',7'-pentamethylspiro2H-1-benzopyran-2,2'-indoline!;
8-methoxy-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline! 8-methoxy-7'-phenyl-1'3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-methoxy-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
8-methoxy-4',6,7'-trichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-i ndoline!;
5'-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-metho xy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-methoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-methoxy-1',3',3'-trimethyl-5,5',6-trinitrospiro2H-1-benzopyran-2,2'-ind oline!;
6-nitro-1',3',3',5,7-pentamethylspiro2H-1-benzopyran-2,2'-indoline!;
6-nitro-1',3',3',5,8-pentamethylspiro2H-1-benzopyran-2,2'-indoline!;
6-(o-nitrophenylazo)-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline !;
6-(p-nitrophenylazo)-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline !;
6-nitro-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-nitro-7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-nitro-5'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-nitro-7'-phenyl-1'3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-nitro-8-piperidinomethyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
7-nitro-5,5',6,8-tetrachloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'- indoline!;
6-nitro-4',5',6',7'-tetrafluoro-1',3',3'-trimethylspiro2H-1-benzopyran-2, 2'-indoline!;
6-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
6-nitro-1',3',3',5'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
6-nitro-1',3',3',6'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
6-nitro-1',3',3',7'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
6-nitro-1',3',3',8-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
8-nitro-1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
8-nitro-1',3',3',6'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
8-nitro-1',3',3',7'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
5-nitro-5',6,8-trichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
6-nitro-5,5',7-trichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
6-nitro-5,5',8-trichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
6-nitro-5,7,7'-trichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
6-nitro-5',7,8-trichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indo line!;
7-nitro-5,6,8-trichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indol ine!;
5-nitro-4',7',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
6-nitro-4',6',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
6-nitro-4',7',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!;
8-nitro-4',6,7'-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-in doline!, 5-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5'-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
7-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
8-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-(.beta.-nitrovinyl)-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indolin e!;
6-nitro-1',3',3'trimethyl-4',6',7'-triphenylspiro2H-1-benzopyran-2,2'-ind oline!;
1',3',3',5,7-pentamethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3',3',6,8-pentomethylspiro2H-1-benzopyran-2,2'-indoline!;
7'-phenyl-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
6-phenylazo-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3,3',3'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3',3',5'-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3',3',6-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3',3',7-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3',3',8-tetramethylspiro2H-1-benzopyran-2,2'-indoline!;
5,6,8-trichloro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
4',6',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
4',7',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
5',7',8-trimethoxy-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!, 1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-indoline!;
1',3',3'-trimethyl-5',6,8-trinitrospiro2H-1-benzopyran-2,2'-indoline!;
1',3',3'-trimethyl-4',6',7'-triphenylspiro2H-1-benzopyran-2,2'-indoline!;
spiro2H-1-benzopyran-2,2'-1H!-benzog!indoline!;
8-methoxy-6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-1H!-benzo g!indoline!;
6-nitro-1',3',3'-trimethylspiro2H-1-benzopyran-2,2'-1H!-benzog!indoline !;
spiro2H-benzopyran-2,2,-1H!-benzoe!indoline!;
6-nitro-1'3',3'-trimethylspiro2H-benzopyran-2,2,-1H!-benzoe!indoline!;
spiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
8'-bromo-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
1-butyl-3,3-dimethylspiroindoline2,3'-3H!-naphtho(2,1-b!pyran!;
1-butyl-3,3-dimethyl-8-nitrospiroindoline-2,3'-3H !-naphtho2,1-b!pyran!;
5'-carboxy-5-chloro-1,3,3-trimethylspiroindoline- 2,3'-3H!-naphtho2,1-b!pyran!;
5'-carboxy-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
5-chloro-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
5-chloro-8'-nitro-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!py ran!;
4,7-dimethoxy-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran! ;
1,3-dimethyl-3-ethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
3,3-dimethyl-1-ethylspiroindoline2,3'-3H!-naphtho2,1-b!pyran!;
3,3-dimethyl-1-ethyl-8'-nitrospiroindoline-2,3'-3H!-naphtho2,1-b!pyran! ;
3,3-dimethyl-1-propylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
3,3-dimethyl-1-propyl-8'-nitrospiroindoline-2,3'-3H!-naphtho2,1-b!pyran !;
9'-hydroxy-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
5-(.beta.-hydroxyethyl)-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2, 1-b!pyran!;
5-methoxy-8'-nitro-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!p yran!;
5'-methoxy-8'-nitro-1,3,3-trimethylspirolindoline-2,3'-3H!-naphtho2,1-b!p yran!;
5'-methoxy-10'-nitro-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b !pyran!;
5-methoxy-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
5'-methoxy-1,3,3-trimethylspiroindoline-2,3'-3!-naphtho2,1-b!pyran!;
7-nitro-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
8'-nitro-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
10'-nitro-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
1,3,3,4,7-pentamethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
1,3,3,5,7-pentamethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
5-phenyl-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
7-phenyl-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
1,2',3,3-tetramethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
1,3,3,5-tetramethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
1,3,3,7-tetramethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
1,3,3,-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!pyran!;
spiroindoline-2,2-2H!-phenanthro2,1-b!pyran!;
1,3,3,-trimethylspiroindoline-2,2'-2H!-phenanthro2,1-b!pyran!;
spiro3H-anthra2,1-b!pyran-3,2'-indoline!;
1',3',3'-trimethylspiro3H-anthra2,1-b!pyran-3,2'-indoline!;
spiroindoline-2,3'-(3H!-phenanthro3,4-b!pyran!;
1,3,3-trimethylspiroindoline-2,3'-(3H!-phenanthro3,4-b!pyran!;
spiroindoline-2,2'-2H!-naphtho1,2-b!pyran!;
6'-chloro-1,3,3-trimethylspiroindoline-2,2'-2H!-naphtho1,2-b!pyran!;
6'-nitro-1,3,3-trimethylspiroindoline-2,2'-2H!-naphtho1,2-b!pyran!;
1,3,3-trimethylspiroindoline-2,2'-2H!-naphtho1,2-b!pyran!;
spiro (indoline-2,2'-2H!-naphtho2,3-b!pyran!;
10'-nitro-1,3,3-trimethylspiroindoline-2,2'-2H!-naphtho2,3-b!pyran!;
1,3,3-trimethylspiroindoline-2,2'-2H!-naphtho2,3-b!pyran!;
spiro2H-1-benzopyran-2,2'-benzothiazoline!;
6-acetamido-3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazolin e!;
6'-amino-3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
6-bromo3,3'-dimethylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
6-bromo-3,3'-dimethyl-6'-methoxyspiro2H-1-benzopyran-2,2'-benzothiazoline !;
6'-bromo-3,3'-dimethyl-8-methoxy-6-nitrospiro 2H-1-benzopyran-2,2'-benzothiazoline!;
6-bromo-3,3'-dimethyl-6'-methylthiospiro2H-1-benzopyran-2,2'-benzothiazol ine!;
6-bromo-3,3'-dimethyl-6'-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
8-bromo-3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
6-bromo-3'-methylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
3'-butyl-6-nitro-3-phenylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
8-carbethoxy-3,3'-1-dimethylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
8-carbethoxy-3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoli ne!;
8-carboxy-3,3'-dimethylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
6'-carboxy-3,3'-dimethyl-8methoxy-6-nitrospiro2H-1-benzopyran-2,2'-benzot hiazoline!;
8-carboxy-3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline! ;
6'-chloro-3,3'-dimethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-benzo thiazoline!;
6-chloro-3,3'-dimethyl-8-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
3-(p-chlorophenyl)-8-methoxy-3'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-b enzothiazoline!;
6'-cyano-3,3'-dimethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-benzoth iazoline!;
6,6'-dibromo-3,3'-dimethylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
6',8-dimethoxy-3,3'-dimethylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
6',8-dimethoxy-3,3'-dimethyl-6,7'-dinitrospiro2H-1-benzopyran-2,2'-benzot hiazoline!;
6',8-dimethoxy-3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazo line!;
6',8-dimethoxy-3'-ethyl-3-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzoth iazoline!;
3,3'-dimethylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
3,3'-dimethyl-6,6'-dinitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
3,3'-dimethyl-6,6'-dinitro-8-methoxyspiro2H-1-benzopyran-2,2'-benzothiazo line!;
3,3'-dimethyl-6'-hydroxy-8-methoxy-6-nitrospiro2,2'-benzopyran-2,2'-benzo thiazoline!;
3,3'-dimethyl-5'-isobutyramido-6-nitrospiro2H-1-benzopyran-2,2'-benzothia zoline!;
3,3'-dimethyl-5'-methocrylamido-6-nitrospiro2H-1-benzopyran-2,2'-benzothi azoline!;
3,3'-dimethyl-8-methoxyspiro 2H-1-benzopyran-2,2'-benzothiazoline!;
3,3'-dimethyl-8-methoxy-6'-methylthio-6-nitrospiro2H-1-benzopyran-2,2'-be nzothiazoline!;
3,3'-dimethyl-6'-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline !;
3,3'-dimethyl-8-methoxy-5-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline! ;
3,3'-dimethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline !;
3,3'-dimethyl-6'-methylthio-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazol ine!;
3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
3,3'-dimethyl-8-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
3'-ethyl-8-methoxy-3-methylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
3-ethyl-8-methoxy-3'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazol ine!;
3'-ethyl-6'-methoxy-3-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazo line!;
3'-ethyl-8-methoxy-3-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazol ine!;
3-ethyl-3'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
3'-ethyl-3-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
3'-ethyl-8-methoxy-6-nitro-3-phenylspiro2H-1-benzopyran-2,2'-benzothiazol ine!;
3'-ethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
3'-ethyl-6-nitro-3-phenylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
3-isopropyl-8-methoxy-3'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothi azoline!;
3'-isopropyl-8-methoxy-3methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothia zoline!;
7-methoxy-3'-methylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
8-methoxy-3'-methyl-6-nitro-3-phenylspiro2H-1-benzopyran-2,2'-benzothiazo line!;
8-methoxy-3'-methyl-6-nitro-3-propylspiro2H-1-benzopyran-2,2'-benzothiazo line!;
3'-methylspiro2H-1-benzopyran-2,2'-benzothiazoline!, 3'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzothiazoline!;
3'-methyl-6-nitro-3-phenylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
3'-methyl-6-nitro-3-propylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
6-nitro-3-phenyl-3'-propylspiro2H-1-benzopyran-2,2'-benzothiazoline!;
spirobenzothiazoline-2,3,'-3H!-naphtho2,1-b!pyran!;
2',3-dimethylspirobenzothiazoline-2,3,'-3H!-naphtho2,1-b!pyran!;
2',3-dimethyl-6-methoxyspirobenzothiazoline-2,3,'-3H!-naphtho2,1-b!pyra n!;
3-ethylspirobenzothiazoline-2,3,'-3H!-naphtho2,1-b!pyran!;
3-ethyl-2'-methylspirobenzothiazoline-2,3,'-3H!-naphtho2,1-b!pyran!;
3-methylspirobenzothiazoline-2,3,'-3H)-naphtho2,1-b!pyran!;
spiro2H-1-benzopyran-2,2'-benzoxazoline!;
8-bromo-3'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzoxazoline!;
5'-chloro-3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzoxazoline!;
6-chloro-3,3'-dimethyl-8-nitrospiro2H-1-benzopyran-2,2'-benzoxazoline!;
3,3'-dimethyl-6-methoxy-8-nitrospiro2H-1-benzopyran-2,2'-benzoxazoline!;
3,3'-dimethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-benzoxazoline!;
3,3'-dimethyl-8-methoxy-6-nitro-5'-phenylspiro2H-1-benzopyran-2,2'-benzox azoline!;
3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-benzoxazoline!;
3,3'-dimethyl-8-nitrospiro2H-1-benzopyran-2,2'-benzoxazoline!;
3,3'-dimethyl-6-nitro-5'-phenylspiro2H-1-benzopyran-2,2'-benzoxazoline!;
3-ethyl-3'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-benzoxazoline!;
8-methoxy-6-nitro-3,3',5',7'-tetramethylspiro2H-1-benzopyran-2,2'-benzoxa zoline!;
8-methoxy-6-nitro-3,3',5'-trimethylspiro2H-1-benzopyran-2,2'-benzoxazolin e!;
6-nitro-3,3',5'-trimethylspiro2H-1-benzopyran-2,2'-benzoxazoline!;
8-nitro-3,3',5'-trimethylspiro2H-1-benzopyran-2,2'-benzoxazoline!;
spiro2H-1-benzopyran-2,2'-naphth2,3-dioxazoline!;
3,3'-dimethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-naphth2,3-d!oxa zoline!;
3,3'-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-naphth2,3-d!oxazoline!;
spiro2H-1-benzopyran-2,2'-naphth2,1-d!oxazoline!;
3,3'-dimethyl-8-methoxy-6-nitrospiro2H-1-benzopyran-2,2'-naphth2,1-dioxa zoline!;
2,2'-spirobi2H-1-benzopyran!;
3-amyl-2,2'-spirobi2H-1-benzopyran!;
3-amyl-6'-bromo-2,2'-spirobi2H-1-benzopyran!;
3-amyl-6-bromo-6'-methyl-2,2'-spirobi2H-1-benzopyran!;
3-amyl-6'-bromo-6-methyl-2,2'-spirobi2H-1-benzopyran!;
3-amyl-6,6'-dibromo-2,2'-spirobi2H-1-benzopyran!;
3-amyl-6,6'-dimethyl-2,2'-spirobi2H-1-benzopyran!;
3-amyl-6-methyl-2,2'-spirobi2H-1-benzopyran!;
5bromo-8,8'-dimethoxy-6-nitro-3'-phenyl-2,2'-spirobi2H-1-benzopyran!;
6-bromo-6'-nitro-3-phenyl-2,2'-spirobi2H-1-benzopyran!;
6-bromo-3'-phenyl-2,2'-spirobi2H-1-benzopyran!;
3-benzyl-2,2'-spirobi2H-1-benzopyran!;
3-butyl-2,2'-spirobi2H-1-benzopyran!;
6-chloro-6'-nitro-3-phenyl-2,2'-spirobi2H-1-benzopyran!;
8-chloro-6-nitro-3'-phenyl-2,2'-spirobi2H-1-benzopyran!;
6,6'-dibromo-3,3'-dimethylene-2,2'-spirobi2H-1-benzopyran!;
8,8'-dimethoxy-6'-nitro-3-phenyl-2,2'-spirobi2H-1-benzopyran!;
3,3'-dimethyl-2,2'-spirobi2H-1-benzopyran!;
6,6-dimethyl-3',3'-dimethylene-2,2'-spirobi2H-1-benzopyran!;
3,3'-dimethylene-2,2'-spirobi2H-1-benzopyran!;
6,6'-dinitro-3,3'-diphenyl-2,2'-spirobi2H-1-benzopyran!;
3,3'-diphenyl-2,2'-spirobi2H-1-benzopyran!;
3-ethyl-2,2'-spirobi2H-1-benzopyran!, 8-fluoro-6-nitro-3'-phenyl-2,2'-spirobi2H-1-benzopyran!;
8-iodo-6-nitro-3'-phenyl-2,2'-spirobi2H-1-benzopyran!;
8'-methoxy-3-methyl-6-nitro-2,2'-spirobi2H-1-benzopyran!;
8-methoxy-6-nitro-3'-phenyl-2,2'-spirobi2H-1-benzopyran!;
8-methoxy-6'-nitro-3-phenyl-2,2'-spirobi2H-1-benzopyran!;
8-methoxy-8'-nitro-3-phenyl-2,2'-spirobi2H-1-benzopyran!;
8'-methoxy-6-nitro-3-phenyl-2,2'-spirobi2H-1-benzopyran!;
3-methyl-2,2'-spirobi2H-1-benzopyran!;
3-methyl-6-nitro-2,2'-spirobi2H-1-benzopyran!;
6-nitro-3'-phenyl-2,2'-spirobi2H-1-benzopyran!;
3-phenyl-2,2'-spirobi2H-1-benzopyran!;
3,3'-tetromethylene-2,2'-spirobi2H-1-benzopyran!;
3,3'-trimethylene-2,2'-spirobi2H-1-benzopyran!;
3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-amyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-benzyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-butyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-chloro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-chloro-8,8'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-decyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
8,8'-dibromo-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-dicarboethoxy-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-dicarbomethoxy-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-diethyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
5,5'-dimethoxy-3,3'-spirobi3H-naphtho2,1-b!pyran!, 5,5'-dimethoxy-8,8'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
5,5'-dimethoxy-10,10'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!, 9,9'-dimethoxy-8,8'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-dimethyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-dimethyl-8,8'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
5,5'-dimethyl-10,10'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
9,9'-dimethyl-8,8'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
9,9-dimethyl-7,7'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-(.gamma.,.gamma.-dimethylallyl)-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-dimethylene-3,3'-spirobi3H-naphtho2,1-b!pyran!;
7,7'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
8,8'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
9,9'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
10,10'-dinitro-3,3'-spirobi3H-naphtho2,1-b!pyran!;
8,8'-dinitro-2-methyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
8,8'-dinitro-2,2'-1(2"-methyl)trimethylene-3,3'-spirobi3H-naphtho2,1-b!p yran!;
8,8'-dinitro-2-phenyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
8,8'-dinitro-2,2'-trimethylene-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-diphenyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-ethyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-heptyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-hexyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-isobutyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-isopropyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-methyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-(2"-methyl)trimethylene-3,3'-spirobi3H-naphtho2,1-b!pyran!;
8'-nitro-2-phenyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-octyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-phenyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-(.beta.-phenylethyl)-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2-propyl-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-tetramethylene-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-trimethylene-3,3'-spirobi3H-naphtho2,1-b!pyran!;
2,2'-spirobi2H-naphtho1,2-b!pyran!;
3-amyl-2,2'-spirobi2H-naphtho1,2-b!pyran!;
6,6'-dichloro-2,2'-spirobi2H-naphtho1,2-b!pyran!;
7,7'-dinitro-2,2'-spirobi2H-naphtho1,2-b!pyran!;
8,8'-dinitro-2,2'-spirobi2H-naphtho1,2-b!pyran!;
9,9'-dinitro-2,2'-spirobi2H-naphtho1,2-b!pyran!;
10,10'-dinitro-2,2'-spirobi2H-naphtho1,2-b!pyran!;
3-phenyl-2,2'-spirobi2H-naphtho1,2-b!pyran!;
2,2'-spirobi2H-naphtho2,3-b!pyran!;
spiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
2'-amylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-amylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-amyl-6-bromospiro2H-1-benzopyran-2,3'-3H 1-naphtho2,1-b!pyran!;
3-amyl-7-chlorospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-amyl-6-hydroxyspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!, 3-amyl-6-methoxyspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-amyl-7-methoxyspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-amyl-6-methylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-amyl-7-methylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-amyl-6-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
2'-benzylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-benzylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
6-bromospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
6-bromo-8-methoxy-3-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho 2,1-b!pyran!;
8'-bromo-8-methoxy-3-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!p yran!;
6-bromo-3-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyr an!;
6-bromo-8'-nitro-3-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyr an!;
8'-bromo-3-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!, 6-chloro-8-methoxy-3-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphth o2,1-b!pyran!;
6-chloro-3-methylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
6-chloro-3-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!py ran!;
8-chloro-3-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!py ran!;
6-chloro-8'-nitro-3-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!py ran!;
7-diethylamino-3-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2, 1-b!pyran!;
5,7-dimethoxy-8'-nitro-3-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1 -b!pyran!;
2',3-dimethylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
2',3'-dimethylenespiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
6-fluoro-3-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!py ran!;
2-isopropylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-isopropylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
8-methoxy-2'-methylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
8-methoxy-2'-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b! pyran!;
8-methoxy-3-methyl-6-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!py ran!;
8-methoxy-3-methyl-8'-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!p yran!;
7-methoxy-2'-methyl-4-phenylspiro2H-1-benzopyran-2,3'-13H!-naphtho2,1-b! pyran!;
7-methoxy-3-methyl-4-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!p yran!;
8-methoxy-8'-nitro-3-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!p yran!;
2'-methylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-methylspiro2H-1-benzopyran-2,3'-(3H!-naphtho2,1-b!pyran!;
6-methylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-methyl-6-nitrospiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
2'-methyl-4-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
8'-nitro-3-(o-nitrophenyl)spiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!py ran!;
8'-nitro-3-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
2'- octylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
2'-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-phenylspiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
2'-(.beta.-phenylethyl)spiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran !;
3-(.beta.-phenylethyl)spiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran! ;
2',3-trimethylenespiro2H-1-benzopyran-2,3'-3H!-naphtho2,1-b!pyran!;
spiro2H-1-benzopyran-2,2'-2H!-naphtho 1,2-b!pyran!;
3-amylspiro2H-1-benzopyran-2,2'-2H!-naphtho1,2-b!pyran!;
3'-amylspiro2H-1-benzopyran-2,2'-2H!-naphtho1,2-b!pyran!;
3-amyl-6-bromospiro2H-1-benzopyran-2,2'-2H!-naphtho1,2-b!pyran!;
3-amyl-6-methoxyspiro2H-1-benzopyran-2,2'-2H!-naphtho1,2-b!pyran!;
3-amyl-6-methylspiro2H-1-benaphtho2,2'-2H!-naphtho1,2-b!pyran!;
3-amyl-6-nitrospiro2H-1-benzopyran-2,2'-2H!-naphtho1,2-b!pyran!;
6'-chloro-8-methoxy-3-phenylspiro2H-1-benzopyran-2,2'-2H!-naphtho1,2-b! pyran!;
3'-methyl-4'-phenylspiro2H-1-benzopyran-2,2'-2H3-naphtho1,2-b!pyran!;
3-phenylspiro2H-1-benzopyran-2,2'-2H!-naphtho1,2-b!pyran!;
3'-phenylspiro2H-1-benzopyran-2,2'-2H!-naphtho1,2-b!pyran!;
spiro3H-anthraceno2,1-b!pyran-3,2'-2H!-1-benzopyran!;
spiro2H-1-benzopyran-2,2'-2'H!phenanthreno2,1-b!pyran!;
spiro3H-anthraceno2,1-b!pyran-3,3'-3H!naphtho2,1-b!pyran!;
spiro3H-naphtho2,1-b!pyran-3,2'-2'H!phenanthreno2,1-b!pyran!;
2,2'-spirobi2H-phenanthreno2,1-b!pyran!;
spiro4H-1-benzopyran-4,3'-3H!naphtho2,1-b!pyran!;
2,3-diphenyl-7-methoxyspiro4H-1-benzopyran-4,3'-3H!naphtho2,1-b!pyran!;
2,3-diphenyl-7-methoxy-8'-nitrospiro4H-1-benzopyran-4,3'-3H!naphtho2,1- b!pyran!;
2,3-diphenyl-8'-nitrospiro4H-1-benzopyran-4,3'-3H!naphtho2,1-b!pyran!;
7-methoxy-3-methyl-8'-nitro-2-phenylspiro4H-1-benzopyran-4,3'-3H!naphtho 2,1-b!pyran!;
6-methoxy-3-methyl-2-phenylspiro4H-1-benzopyran-4,3'-3H!naphtho2,1-b!py ran!;
7-methoxy-3-methyl-2-phenylspiro4H-1-benzopyran-4,3'-3H!naphtho2,1-b!py ran!;
3-(p-methoxyphenyl)-8'-nitro-2-phenylspiro4H-1-benzopyran-4,3'-3H!naphth o2,1-b!pyran!;
3-methyl-2-phenylspiro4H-1-benzopyran-4,3'-3H!naphtho2,1-b!pyran!;
spiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyran!;
2'-amylspiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-amylspiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyran!;
2',3-dimethyl-4-phenylspiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b !pyran!;
2'-3-dimethylenespiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyran !;
2'-methyl-4-phenylspiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyr an!;
3-methyl-4-phenylspiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyra n!;
2'-phenylspiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyran!;
3-phenylspiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyran!;
4-phenylspiro2H-naphtho 1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyran!;
2',3-trimethylenespiro2H-naphtho1,2-b!pyran-2,3'-3H!-naphtho2,1-b!pyra n!;
spiro4H-napththo1,2-b!pyran-4,3'-3H!naphtho2,1-b!pyran!;
3-methyl-8'-nitro-2-phenylspiro4H-napththo1,2-b!pyran-4,3'-3H!naphtho2 ,1-b!pyran!;
spiro2H-1-benzopyran-2,9'-xanthene!;
6,8-dinitrospiro2H-1-benzopyran-2,9'-xanthene!;
3'-hydroxy-6-nitrospiro2H-1-benzopyran-2,9'-xanthene!;
6-nitrospiro2H-1-benzopyran-2,9'-xanthene!;
8-nitrospiro2H-1-benzopyran-2,9'-xanthene!;
spiro3H-naphtho2,1-b!pyran-3,9'-xanthene!;
2-methylspiro3H-naphtho2,1-b!pyran-3,9'-xanthene!;
8-nitrospiro3H-naphtho2,1-b!pyran-3,9'-xanthene!;
spiro3H-naphtho2,1-b!pyran-3,2'-2H!pyran;
4',6'-diphenylspiro3H-naphtho2,1-b!pyran-3,2'-2H!pyran;
spiroindoline-2,2'-pyrano3,2-H!quinoline!;
6-bromo-1,3,3-trimethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
5-chloro-1,3,3,6'-tetramethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
5-chloro-1,3,3,9'-tetramethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
5-chloro-1,3,3-trimethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
3,3-dimethyl-1-ethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
3,3-dimethyl-1-propylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
1-ethyl-3,3,6'-trimethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
5-fluoro-1,3,3,6'-tetramethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
5-fluoro-1,3,3-trimethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
1,3,3,6',7-pentamethylspiro indoline-2,2'-pyrano3,2-H!quinoline!;
1,3,3,7,9'-pentamethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
1-propyl-3,3,6'-trimethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
1,3,3,7-tetramethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
1,3,3,9'-tetramethylspiroindoline-2,2'-pyrano3,2-H!quinoline!;
spiroindoline-2,3'-3H!-naphtho2,1-b!-1,4-oxazine!;
5-chloro-1,3,3-trimethylspiroindoline-2,3'-3H!-naphtho2,1-b!-1,4-oxazin e!1,3,3-trimethylspirolindoline-2,3'-3H!-naphtho2,1-b!-1,4-oxazine!;
spiroindoline-2,2'-2H!-pyrano3,4-b!pyridine!, 5'-hydroxymethyl-1,3,3,8'-tetramethylspiroindoline-2,2'-2H!-pyrano3,4-b !pyridine!;
spiroindoline-2,2'-2H!-pyrano3,2-b!pyridine!;
5-chloro-1,3,3-trimethylspiroindoline-2,2'-2H!-pyrano3,2-b!pyridine!;
spiroindoline-2,2'-2H!-pyrano3,2-c!quinoline!;
1,3,3,5'-tetramethylspiroindoline-2,2'-2H!-pyrano3,2-c!quinoline!;
spiro2H-1,4-benzoxazine-2,2'-indoline!;
1',3',3'-trimethylspiro2H-1,4-benzoxazine-2,2'-indoline!;
spiro2H-1-benzopyran-2,2'-2H!quinoline!;
6-bromo-3-isopropyl-1'-methylspiro2H-1-benzopyran-2,2'-2H!quinoline!;
6-bromo-1'-methylspiro2H-1-benzopyran-2,2'-2H!quinoline!;
3,3'-dimethylene-1'-methylspiro2H-1-benzopyran-2,2'-2H!quinoline!;
1'-ethylspiro2H-1-benzopyran-2,2'-2H!quinoline!;
1'-ethyl-6-nitrospiro2H-1-benzopyran-2,2'-2H!quinoline!;
1'-ethyl-8-nitrospiro2H-1-benzopyran-2,2'-2H!quinoline!;
6-methoxy-1'-methylspiro2H-1-benzopyran-2,2'-2H!quinoline!;
7-methoxy-1'-methylspiro2H-1-benzopyran-2,2'-2H!quinoline!;
1'-methylspiro2H-1-benzopyran2,2'-(2H!quinoline!;
1'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-2H1quinoline!;
1'-methyl-3,3'-trimethylenespiro2H-1-benzopyran-2,2'-2H!quinoline!;
6-nitro-1',3,3'-trimethylspiro2H-1-benzopyran-2,2'-2H!quinoline!;
spiro3H-naphtho2,1-b!pyran-3,2'-2H!quinoline!;
2-isopropyl-1'-methylspiro3H-naphtho2,1-b!pyran-3,2'-2H!quinoline!:
1'-methylspiro3H-naphtho2,1-b!pyran-3,2'-2H quinoline!;
spiro2H-1-benzopyran-2,2'-2H!pyridine!;
6-bromo-1'-methylspiro2H-1-benzopyran-2,2'-2H!pyridine!;
1',3-dimethyl-6-nitrospiro2H-1-benzopyran-2,2'-2H!pyridine!;
6,8-dinitro-1'-methyl-3-phenylspiro2H-1-benzopyran-2,2'-2H!pyridine!;
1'-ethylspiro2H-1-benzopyran-2,2'-2H!pyridine!;
3-ethyl-1'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-2H!pyridine!;
1'-ethyl-6-nitrospiro2H-1-benzopyran-2,2'-2H!pyridine!;
1'-ethyl-8-nitrospiro2H-1-benzopyran-2,2'-2H!pyridine!;
7-methoxy-1'-methylspiro2H-1-benzopyran-2,2'-2H!pyridine!;
1'-methylspiro2H-1-benzopyran-2,2'-2H!pyridine!;
1'-methyl-6-nitrospiro2H-1-benzopyran-2,2'-2H!pyridine!;
spiro3H-naphtho2H!pyran-3,2'-2H!pyridine!;
1'-methylspiro3H-naphtho2,1-b!pyran-3,2'-2H!pyridine!;
1',4',6'-triphenylspiro3H-naphtho2,1-b!pyran-3,2'-2H!pyridine!;
spiroacridine-9,2'-2H!benzopyran!;
8'-methoxy-10-methylspiro9H-acridine-9,2'-2H!benzopyran!;
10-methylspiro9H-acridine-9,2'-2H benzopyran!;
spiro9H-acridine-9,3'-3H!naphtho2,1-b!pyran!;
10-methylspiro9H-acridine-9,3'-3H!naphtho2,1-b!pyran!, spiroindoline-2,2'-2H!pyrano2,3-b!indole!;
5-chloro-1,3,3,9'-tetramethylspiroindoline-2,2'-2H!pyrano2,3-b!indole!;
spiroindoline-2,2'-2H!pyrano3,2-b!indole!;
5-chloro-1,3,3-trimethylspiroindoline-2,2'-2H pyrano3,2-b!indole!;
spiroindoline-2,2'-2H!pyrano2,3-b!benzofuran!;
1,3,3-trimethylspiroindoline-2,2'-(2H!pyrano2,3-b!benzofuran!;
spiroindoline-2,2'-2H!pyrano3,2-b!benzofuran!;
5-chloro-1,3,3-trimethylspiroindoline-2,2'-2H!pyrano3,2-b!benzofuran!;
spiro2H-1-benzothieno2,3-b!pyran-2,2'-indoline!;
5'-chloro-1',3',3'-trimethylspiro2H-1-benzothieno2,3-b!pyran-2,2'-indoli ne!;
spiro2H!-1-benzothieno3,2-b!pyran-2,2'-indoline!;
5'-chloro-1',3',3'-trimethylspiro2H!-1-benzothieno3,2-b!pyran-2,2'-indol ine!;
spiro3H-naphtho2,1-b!pyran-3,9'-thioxonthene!;
4'-chloro-8-nitrospiro3H-naphtho2,1-b!pyran-3,9'-thioxanthene!;
spiro2H,8H-benzo1,2-b:-3,4-b'!dipyran-8-2'-indoline!-2-one;
1',3',3',4-tetramethylspiro2H,8H-benzo1,2-b:-3,4-b'!dipyran-8-2'-indolin e)-2-one;
spiro2H-1-benzopyran-2,2'-oxazoline!;
3'-methyl-6-nitro-5'-phenylspiro2H-1-benzopyran-2,2'-oxazoline!, spiro2H-1-benzothiopyran-2,2'-indoline!;
1,3',3'-trimethylspiro2H-1-benzothiopyran-2,2'-indoline!;
spiro3H-naphtho2,1-b!pyran-3,2'-thiazoline!;
4',5'-dihydro-2,3'-dimethylspiro3H-naphtho2,1-b!pyran-3,2'-thiazoline!;
m-dithiino5,4b:5,6-b'!bis1!benzopyranspiro3H-naphtho2,1-b!pyran-3,2'-t hiazoline!;
6H,8H-thiopyrano4,3-b:4,5-b'bis1!benzopyranspiro3H-naphtho2,1-b!pyran- 3,2'-thiazoline!;
6H,8H-bisnaphtho 1',2':5,6!pyrano3.2-c:2',3'-d!thiopyranspiro3H-naphtho2,1-b!pyran-3,2'- thiazoline!;
spiro2H-1-benzopyran-2,1'-isoindoline!;
6-nitro-2',3',3'-trimethylspiro2H-1-benzopyran-2,1'-isoindoline!;
spiroindoline-2,3'-3H!pyrano-3,2-a!xanthene!-12'-one;
5-chloro-3',12'-dihydro-1,3,3-trimethylspiroindoline-2,3'-3H!pyrano-3,2 -a!xanthene!-12'-one;
and mixtures thereof, (3) a third component which is a charge control agent, (4) an optional fourth component which is a colored dye, and (5) an optional fifth component which is a colored pigment.

861 more elements

Dependencies are inferred from the claim text.