苯基乙烯基砜的制备  

Synthesis of phenylvinylsulfone

作　　者：周少东[1] 刘金强[1] 张涛[1] 陈新志[1] 

机构地区：[1]浙江大学材料与化工学院化工所,浙江杭州310027

出　　处：《化学工程》2009年第11期59-61,74,共4页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(20776127);国家科技支撑计划课题(2007BA134B07);浙江省自然科学基金(Y4090045;R4090358)

摘　　要：为得到一种简单可行的苯基乙烯基砜的合成工艺,文章以苯硫酚、环氧乙烷及浓硫酸为原料进行了研究。实验在间歇釜中针对每个步骤的反应研究了温度、物料比等条件的影响,并探求了较优的反应条件,得到较为理想的反应条件为:苯硫酚与环氧乙烷的反应温度为40℃,二者的摩尔比为1∶1.1,苯硫酚与浓硫酸的摩尔比为1∶3.2,反应温度为140℃。在此条件下的收率为92%。文章还对反应机理进行了讨论。得到的制备苯基乙烯基砜的新工艺过程简捷,操作简单,原子经济性及收率均较高。Thiophenol, ethylene oxide and concentrated sulfuric acid were used as raw materials to prepare phenylvinylsulfone in order to get a simple and applicable synthesis method. The experiments were taken in a batch reactor to investigate the effects of temperature and the ratio of reactants on each step of reactions. The optimum conditions of the reaction were selected as follows： the reaction temperature of thiophenol and ethylene oxide is 40 ℃, the molar ratio of thiophenol to ethylene oxide is 1 ： 1. 1, and the reaction temperature of step 2 is 140 ℃, and the molar ratio of thiophenol to concentrated sulfuric acid is 1 ： 3, 2. At such conditions the yield is 92%. The new route obtained is much simpler and easier to operate ,and has higher atom economy and yield.

关 键 词：苯基乙烯基砜 苯硫酚 环氧乙烷 

分 类 号：TQ247.3[化学工程—有机化工]