Patent ID: 7314849

Claim:
A compound of the formula I wherein Q 1 represents H or F; Q 2 represents a halogen with the proviso that when Q 1 is H then Q 2 is Cl or Br; 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 wherein W 1 represents halogen; X 1 represents F, Cl, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, C 1 -C 4 alkylthio, C 1 -C 4 alkylsulfinyl, C 1 -C 4 alkylsulfonyl, C 1 -C 4 haloalkyl, C 1 -C 4 haloalkoxy, C 1 -C 4 alkoxy-substituted C 1 -C 4 alkyl, C 1 -C 4 alkoxy-substituted C 1 -C 4 alkoxy, —CN, —NR 3 R 4 or fluorinated acetyl or propionyl; Y 1 represents C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, halogen or —CN, 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 R 4 independently represent H or C 1 -C 4 alkyl; wherein W 2 represents F or Cl; X 2 represents F, Cl, —CN, —NO 2 , C 1 -C 4 alkyl, C 1 -C 4 alkoxy, C 1 -C 4 alkylthio, C 1 -C 4 alkylsulfinyl, C 1 -C 4 alkylsulfonyl, C 1 -C 4 haloalkyl, C 1 -C 4 haloalkoxy, C 1 -C 4 alkoxy-substituted C 1 -C 4 alkyl, C 1 -C 4 alkoxy-substituted C 1 -C 4 alkoxy, —NR 3 R 4 or fluorinated acetyl or propionyl; Y 2 represents halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl or —CN, or, when W 2 represents F, X 2 and Y 2 taken together represent —O(CH 2 ) n O— wherein n=1 or 2; and R 3 and R 4 independently represent H or C 1 -C 6 alkyl; and wherein Y 3 represents halogen, —CN or —CF 3 ; Z 3 represents F, Cl, —CN, —NO 2 , C 1 -C 4 alkyl, C 1 -C 4 alkoxy, C 1 -C 4 alkylthio, C 1 -C 4 alkylsulfinyl, C 1 -C 4 alkylsulfonyl, C 1 -C 4 haloalkyl, C 1 -C 4 haloalkoxy, C 1 -C 4 alkoxy-substituted C 1 -C 4 alkyl, C 1 -C 4 alkoxy-substituted C 1 -C 4 alkoxy, —NR 3 R 4 or fluorinated acetyl or propionyl; and R 3 and R 4 independently represent H, or C 1 -C 6 alkyl; and agriculturally acceptable derivatives of the carboxylic acid group.