| abstract |
PURPOSE: To provide a new compound useful as an active component of a herbicide exhibiting broad herbicidal spectrum at low rate of application. n CONSTITUTION: The compound of formula I (R 1 is cycloalkyl, alkoxyalkyl, phenyl, pyridyl, thienyl, furyl, pyrazolyl or pyrazinyl; R 2 is alkyl, haloalkyl, etc.; R 3 is H, halogen, alkyl, etc.; X and Y are halogen, alkyl, alkoxy, etc.; A is =CH- or =N-), e.g. 4-trifluoromethyl-N-[6-[[(4,6-dimethoxypyrimidin-2-yl) aminocarbonyl]aminosulfonyl]pyridin-2-yl]-N-methylbenzamide. The compound can be produced by reacting a compound of formula II [Z 1 is -NH 2 , -NCO or -NHCO 2 R 4 (R 4 is alkyl or aryl)] with a compound of formula III (Z 2 is -NH 2 when Z 1 is -NCO or -NHCO 2 R 4 and Z 2 is -NCO or -NHCO 2 R 4 when Z 1 is -NH 2 ). n COPYRIGHT: (C)1992,JPO&Japio |