对甲基苯磺酸催化安息香制备乙酰化安息香  

p-Toluenesulfonic acid catalyzed the acetylation of benzoin

作　　者：曾鸿耀[1] 周红[1] 陈春夏[1] 冉小凤[1] 陈刚[1] 

机构地区：[1]乐山师范学院化学学院,四川乐山614000

出　　处：《化学试剂》2013年第5期470-472,477,共4页Chemical Reagents

基　　金：乐山师范学院大学生创新性实验项目(2013)

摘　　要：以VB1催化剂,PEG-400做相转移催化剂,苯甲醛为原料,通过安息香缩合反应得到安息香,再用对甲基苯磺酸做催化剂,无溶剂条件下催化安息香和乙酸酐反应合成标题化合物。本方法具有易于操作,后处理方便,反应时间短,反应收率较高,催化剂价廉易得,而且绿色环保等优点。Benzoin was synthesized from benzaldehyde cata- lyzed by VB~ and PEG-400 as phase transfer catalyst. Then p-toluenesulfonic acid could effectively catalyze acetylation of benzoin from benzoin and acetic anhydride under solvent-free condition to synthesize acetylated benzoin. This method has the advantages such as easy to operate, convenient work-up, short reaction time, high reaction yield, cheap catalyst and no solvent, and green environmental.

关 键 词：安息香 乙酸酐 酯化 对甲基苯磺酸 乙酰化安息香 

分 类 号：O625[理学—有机化学]