| abstract |
Benzimidazolyl derivatives of formulan n wherein Y represents:- n an optionally substituted alkyl, alkenyl or alkynyl group; or an optionally substituted cycloalkyl group; or a group -SR, -OR, halogen, aryl or aralkyl; or 2 groups Y form a fused phenyl ring; n R 2 represents a group -OH, -NR 7 R 8 or -XM; n A represents a group -SO 2 NR 7 R 8 ; n Y 1 represents an optionally substituted alkyl, alkenyl or alkynyl group; or an optionally substituted cycloalkyl group; or a group such as -SR, -OR, halogen, aryl, aralkyl, -O-aryl or -NR 7 R 8 ; n n represents one or two; n m represents an integer from 1 to 4; n R represents an optionally substituted alkyl group; or an optionally substituted cycloalkyl group; n R 7 and R 8 represent independently a group such as hydrogen, R, aryl or aralkyl; X represents oxygen or sulphur; n M represents an optionally substituted alkyl group; or an optionally substituted cycloalkyl group; or an aryl, aralkyl, alkenyl, alkynyl, or an imine group; agriculturally acceptable salts thereof; n the herbicidal compositions comprising these compounds and their application to crop protection is described. |