| abstract |
4-Aminopicolinic acids, which have substituents of trifluoromethyl, heteroaryloxy, aryloxy, alkylthio, alkoxy or halogen at positions 3, 5 and 6, and their acid and amine derivatives of the formula (1) wherein X represents H, halogen alkoxy C1-C6, C1-C6 alkylthio, aryloxy, nitro, or trifluoromethyl; Y represents halogen, C1-C6 alkoxy, C1-C6 alkylthio, aryloxy, heteroaryloxy or trifluoromethyl; Z represents halogen, C1-C6 alkoxy, C1-C6 alkylthio, aryloxy or nitro; and W represents -NO2, -N3, -NR1R2, -N = CR3R4 or -NHN = CR3R4, are potent herbicides that demonstrate a broad spectrum of weed control. |