【Abstract】 The phenoxy carboxylic acid derivatives have important bioactivities,extensive application,and the research values in the agriculture,forestry,and environment.It is a very important target to obtain more compounds with higher effect,wider application,better selectivity,and lower toxicity.This article concentrates on the synthesis of the phenoxy carboxylic acid derivatives.The five phenoxy carboxylic acid derivatives herbicides have been designed and synthesized.Three of them were reported for the first time and their structures have been confirmed by~1H NMR,MS and IR.更多还原