Patent ID: 7642220

Claim:
A compound of the formula I wherein Q represents a C 1 -C 4 alkoxy, C 1 -C 4 haloalkoxy, C 1 -C 4 thioalkoxy, C 1 -C 4 halothioalkoxy or —NR 3 R 4 ; 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; Ar represents a phenyl group substituted with one to four substitutents selected from halogen, nitro, cyano, formyl, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 alkoxy, C 2 -C 4 alkoxyalkyl, C 2 -C 6 alkylcarbonyl, C 1 -C 6 alkythio, C 1 -C 6 alkylsulfinyl, C 1 -C 6 alkylsulfonyl, C 2 -C 4 alkenyloxy, C 2 -C 4 alkynloxy, C 2 -C 4 alkenylthio, C 2 -C 4 alkynylthio, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 1 -C 6 haloalkoxy, C 2 -C 4 haloalkoxyalkyl, C 2 -C 6 haloalkylcarbonyl, C 1 -C 6 haloalkythio, C 1 -C 6 haloalkylsulfinyl, C 1 -C 6 haloalkylsulfonyl, C 3 -C 6 trialkylsilyl, C 2 -C 4 haloalkenyloxy, C 2 -C 4 haloalkynyloxy, C 2 -C 4 haloalkenylthio, C 2 -C 4 haloalkynylthio, —OCH 2 CH 2 —, —OCH 2 CH 2 CH 2 —, —OCH 2 O—, —OCH 2 CH 2 O—, —C(O)OR 4 , —C(O)NR 3 R 4 , —CR 3 NOR 4 , —NR 3 R 4 , —NR 3 R 4 , —NR 3 SO 2 R 4 , —NR 3 C(O)R 4 , —NR 3 C(O)OR 4 , —NR 3 C(O)NR 3 R 4 or —NCR 3 NR 3 R 4 ; R 3 represents H, C 1 -C 4 alkyl or C 1 -C 4 haloalkyl; and R 4 represents C 1 -C 4 alkyl or C 1 -C 4 haloalkyl; and agriculturally acceptable derivatives of the carboxylic acid group.