Patent ID: 7833940

Claim:
A compound of the formula I wherein Q represents a halogen, cyano, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 2 -C 4 alkenyl and epoxides thereof, C 2 -C 4 haloalkenyl and epoxides thereof, C 2 -C 4 alkynyl or C 2 -C 4 haloalkynyl; R 1 represents H or C 1 -C 4 alkyl; W represents H or halogen; X represents halogen; Y represents halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, C 1 -C 4 alkylthio, C 1 -C 4 haloalkyl, C 1 -C 4 haloalkoxy, C 1 -C 4 haloalkylthio, —NR 2 R 3 , C 1 -C 4 alkoxy-substituted C 1 -C 4 alkyl, C 1 -C 4 haloalkoxy-substituted C 1 -C 4 alkyl, C 2 -C 4 alkenyl, C 2 -C 4 haloalkenyl or C 1 -C 4 haloalkyl-substituted carbonyl; Z represents halogen, C 1 -C 4 alkyl or C 1 -C 4 haloalkyl; and R 2 and R 3 independently represent H or C 1 -C 4 alkyl; and agriculturally acceptable derivatives of the carboxylic acid group.