差向异构化制备高效氯氰菊酯的某些副反应研究

Side Reaction on Preparation of Beta-cypermethrin by Epimerization

研究了差向异构化制备高效氯氰菊酯反应过程中 ,氯氰菊酯原药中含有的苯醚醛杂质对转位反应的影响 ,发现苯醚醛参与转位反应 ,与氯氰菊酯反应生成苯偶因酯 ,消耗了部分氯氰菊酯原药 ,导致转位反应总酯回收率降低。

The paper discussed the effect of 3-phenoxybenzaldehyde on the preparation of beta- cypermethrin by epimerization.We found that 3-phenoxybenzaldehyde as impurity of cypermethrin was reacted with cypermethrin to give benzoin ester,which resulted in reduction of yield of epimerization.