Patent ID: 7300907

Claim:
A compound of the formula I wherein Q represents a halogen; R 1 and R 2 independently represent H, C 1 -C 6 alkyl, C 3 -C 6 alkenyl, C 3 -C 6 alkynyl, hydroxy, C 1 -C 6 alkoxy, amino, C 1 -C 6 acyl, C 1 -C 6 carboalkoxy, C 1 -C 6 alkylcarbamyl, C 1 -C 6 alkylsulfonyl, C 1 -C 6 trialkylsilyl or C 1 -C 6 dialkyl phosphonyl or R 1 and R 2 taken together with N represent a 5- or 6-membered saturated ring; and Ar represents a polysubstituted aryl group selected from the group consisting of a) wherein W 1 represents F or Cl; X 1 represents 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 or —NR 3 R 4 ; Y 1 represents halogen or C 1 -C 4 haloalkyl or, when X 1 and Y 1 are taken together, represents —O(CH 2 ) n O— wherein n=1 or 2; and R 3 and R4 independently represent H or C 1 -C 4 alkyl; b) wherein W 2 represents F or Cl; X 2 represents 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 or —NR 3 R 4 ; Y 2 represents halogen or C 1 -C 4 haloalkyl or, when X 2 and Y 2 are taken together, represents —O(CH 2 ) n O— wherein n=1 or 2; and R 3 and R 4 independently represent H or C 1 -C 4 alkyl; and c) wherein Y 3 represents halogen or C 1 -C 4 haloalkyl or, when Y 3 and Z 3 are taken together, represents —O(CH 2 ) n O— wherein n=1 or 2; Z 3 represents 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 or —NR 3 R 4 ; and R 3 and R 4 independently represent H or C 1 -C 4 alkyl; and agriculturally acceptable derivatives of the carboxylic acid group.