US 4,362,879 A · Isothioureido isoindolediones and use as plant growth regulators

Abstract

A novel class of compounds which are useful as plant growth regulators is disclosed, having the general structural formula: ##STR1## In which R is C.sub.1 to C.sub.4 alkyl, alkenyl or aklynyl to which may be attached phenyl, pyridyl, benzoyl, phenoxy, halophenoxy, halobenzoyl, N-phenylcarbamyl, N-alkylcarbamyl, N-trifluoromethylthiadiazolylcarbamyl, carboxy, carbalkoxy or halo substituents, R.sup.1 is H, C.sub.1 to C.sub.3 alkyl, alkenyl or alkynyl to which may be attached phenyl, halophenyl or phenoxy groups, acetyl, or R and R.sup.1 together may be C.sub.2 to C.sub.4 alkylene, Ar is phenyl or benzoyl, R.sup.2 is C.sub.1 to C.sub.4 alkyl, alkoxy, alkylene, alkylamino or alkylthio, phenoxy, benzyloxy, carbalkoxy, acetyl, methylenedioxy, trifluoromethyl, nitro, halo or cyano and n may be zero or an integer from 1 to 4, with the provision that at least one position ortho to the point of attachment of a phenyl ring of the Ar structure must be unsubstituted, R.sup.3 is lower alkyl or halo and n' may be zero or an integer from 1 to 4.

Claims71

Dependent claims

A compound which has the structural formula:

##STR30## in which R is cyano, C.sub.1 to C.sub.4 alkyl, C.sub.3 to C.sub.5 alkenyl or fluoroalkenyl, propynyl, phenyallyl or C.sub.1 to C.sub.3 alkyl to which is attached a phenyl, bromophenyl, chlorophenyl, methylphenyl, benzoyl, trimethylacetyl, phenoxy, chlorophenoxy, methylthio, fluorobenzoyl, N-lower alkyl-N-phenylcarbamyl, carboxy or carbethoxy substituent,
R.sup.1 is H, acetyl, C.sub.1 to C.sub.3 alkyl, alkenyl or alkynyl to which may be attached phenyl, halophenyl, carbethoxy, vinyloxy or phenoxy groups;
Ar is phenyl or benzoyl;
R.sup.2 is C.sub.1 to C.sub.4 alkyl, alkoxy, alkylamino or alkylthio;
phenoxy, benzyloxy, carbalkoxy, acetyl, methylenedioxy, trifluoromethyl, nitro, halo or cyano and n represents the number of points of attachment, which may be zero or an integer from 1 to 4 except when R.sup.2 is methylenedioxy or nitro n is 0 or 1, with the provision that at least one position ortho to the point of attachment of a phenyl ring of the Ar structure to the remainder of the molecule must be unsubstituted;
R.sup.3 is lower alkyl or halo and n' may be zero or an integer from 1 to 4.

3 more elements

Dependencies are inferred from the claim text.

Isothioureido isoindolediones and use as plant growth regulators

Life of this patent

Isothioureido isoindolediones and use as plant growth regulators

Life of this patent

Abstract

Claims71