Arylalkyl esters of 4-amino-6-(substituted phenyl)-picolinates and 6-amino-2-(substituted phenyl)-pyrimidinecarboxylates and their use as selective herbicides for crops
View Patent ↗Arylalkyl esters of 4-aminopicolinic acids and 6-amino-4-pyrimidinecarboxylates are herbicides for control of weeds especially those species common to rice and wheat cropping systems and in pasture management programs.
1. A compound of Formula IA:
wherein
Y represents C 1 -C 8 alkyl, C 3 -C 6 cycloalkyl, or phenyl substituted with 1-4 substituents independently selected from halogen, C 1 -C 3 alkyl, C 3 -C 6 cycloalkyl, C 1 -C 3 alkoxy, C 1 -C 3 haloalkyl, C 1 -C 3 haloalkoxy, cyano, nitro, NR 1 R 2 , or where two adjacent substituents are taken together as —O(CH 2 ) n O— or —O(CH 2 ) n — wherein n=1 or 2;
Z represents, C 1 -C 3 alkoxy;
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, or C 1 -C 6 acyl;
R 3 represents unsubstituted or substituted C 7 -C 11 arylalkyl.
2. The compound of claim 1 in which Y represents substituted phenyl.
3. The compound of claim 1 in which Z represents OCH 3 .
4. The compound of claim 1 in which R 1 and R 2 represent H.
5. The compound of claim 1 in which R 3 represents a benzyl.
6. The compound of claim 1 in which R 3 represents an unsubstituted or ortho-, meta- or para-monosubstituted benzyl.