硫酸氢钠催化合成对氯苯氧乙酸乙酯

Synthesis of ethyl p-chlorophenoxyacetate catalyzed by sodium bisulfate

研究了以硫酸氢钠为催化剂,以对氯苯氧乙酸和乙醇为原料合成对氯苯氧乙酸乙酯,确定的最佳工艺条件为:对氯苯氧乙酸20g,酸醇质量比1∶8,催化剂用量0.5g,反应温度80℃,反应时间2h,酯收率达96%以上。

The ethyl pchlorophenoxyacetate is catalytic synthesized by sodium bisulfate,with pchlorophenoxyacetic acid and ethanol as raw materials.The proper technological conditions are as follows:the quality of pchlorophenoxyacetic acid is 20 g,mass ratio of acid and alcohol is 1∶8,dose of catalyst to pchlorophenoxyacetic acid is 0.5 g for the reaction at 80 ℃ for 2 h,the yield was up to 96%.