三氟化硼乙醚催化合成α,β不饱和羧酸羟乙酯的研究

Study on Synthesis of α,β－Unsatura Ted Carboxylic Acid Hydroxyethyl Ester by Boron Trifluoride Ethyl Ether and Catalytic Promoter System

通过对α，β不饱和羧酸羟乙酯的催化合成研究发现三氟化硼乙醚及助剂具有反应催化活性高的特点，合成过程中操作简单、容易精制；产品收率可达９７％，纯度可达９９．８％．

The synthetic technology and catalytic system of α.β－unsaturated carboxylic acid hydrox- yethyl ester is discussed in this paper. The synthetic method is compared with the existing methods. The experiments disclose that the calalytic activity of boron trifluoride ethyl ether and catalytic promoter system is high. refining the product is easy. The purity of the product can be 99. 8% and the rate of the yield of the product can be 97%.