N-SUBSTITUTED-3-[(2,3-DIMETHYLMALEIMIDO)AMINO]-BENZENESULFO NAMIDE DERIVATIVES, PREPARATION PROCESS THEREOF AND HERBICIDAL COMPOSITIONS

摘要

Disclosed herein are N-substituted-3-¢(2,3-dimethyl-maleimido)amino!benzenesulfonamide derivatives of the formula (I): (I) wherein R is C1, C1-C3 alkyl or C1-C4 alkoxycarbonyl; Z is CH or N; X1 is C1 or C1-C3 alkoxyl; and X2 is C1-C3 alkyl or C1-C3 alkoxyl, a process for the preparation thereof, and herbicidal compositions containing the N-substituted-3-¢(2,3-dimethylmaleimido)amino!benzenesulfonamide derivatives as active ingredients.