Chemical compounds
AssigneeZeneca Limited
InventorsRaymond S. Gairns, Anthony A. Watson
Life of this patent
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Abstract
A compound suitable for use as a charge transport compound in organic photoconductors or as a charge control agent in electrophotographic toners. The compound, in the neutral form, is of the Formula (1): ##STR1## wherein: Ar is of formula (a), (b) or (c) ##STR2## each L independently is H, C.sub.1-4 -alkyl or halo; R.sup.1, R.sup.3 and R.sup.4 are each independently alkyl, substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, cycloalkyl or allyl; R.sup.2 is an alkyl, aralkyl, cycloalkyl, allyl or aryl group which is unsubstituted or substituted by a group defined by X.sup.4 ; and X.sup.1, X.sup.2, X.sup.3, X.sup.4 & X.sup.5 are each independently H or a group capable of stabilising a positive charge on the adjacent carbon atom.
Claims4
A compound which, in the neutral form, is of the Formula ( 1):
- ##STR6## wherein:
- Ar is of formula (b) or (c) ##STR7## each L independently is H, C.sub.1-4 -alkyl or halo;
- R.sup.3 and R.sup.4 are each independently 3-methylphenyl, 4-methoxyphenyl, 3-aminophenyl, 4-thiomethylphenyl, methoxymethyl, --CH.sub.2 --S--CH.sub.3, --CH.sub.2 CH.sub.2 N(CH.sub.3).sub.2 or --CH.sub.2 -naphthyl;
- R.sup.2 is C.sub.1-4 -alkyl, benzyl, methoxymethyl, --CH.sub.2 --S--CH.sub.3, or --CH.sub.2 CH.sub.2 N(CH.sub.3).sub.2 ;
- and
- X.sup.2, X.sup.3, X.sup.4, and X.sup.5 are each independently H, C.sub.1-4 -alkyl,
- C.sub.1-4 -alkoxy, hydroxy, --S--(C.sub.1-4 -alkyl), --NR.sup.5 --CO--R.sup.6, --NR.sup.5 --R.sup.6, --O--CO--R.sup.7, chloro or bromo wherein R.sup.5 and R.sup.6 are each independently H or C.sub.1-4 -alkyl and R.sup.7 is C.sub.1-4 -alkyl.
Dependencies are inferred from the claim text.