Brnsted酸功能化离子液体室温催化合成丙酸苄酯  

Synthesis of benzyl propionate under room temperature using Brnsted acid task-specific ionic liquid as catalyst

作　　者：方东[1] 刘祖亮[1] 

机构地区：[1]南京理工大学化工学院精细化工系,江苏南京210094

出　　处：《日用化学工业》2006年第6期365-368,共4页China Surfactant Detergent & Cosmetics

基　　金：南京理工大学开放基金资助项目(No.2006001)

摘　　要：研究了Br nsted酸功能化离子液体(SPILs)室温催化丙酸和苯甲醇反应合成丙酸苄酯的新方法,考察了多种SPILs的催化性能。结果表明,合成的[MIMPS][HSO4]具有很高的催化活性,丙酸和苯甲醇(摩尔比1∶1.2)在室温下反应3.0 h可以得到产率达90%的丙酸苄酯,选择性超过99%。反应结束后,产物与催化体系分层,通过简单的倾析实现产品分离过程。离子液体可以循环使用8次以上而催化活性没有明显降低。Synthesis of benzyl propionate from propionic acid and benzyl alcohol under room temperature, using Broensted acid task- specific ionic liquid （SPILs） as catalyst was studied. Some SPILs with an alkyt sulfonic acid group in a N- methyl imidazolium cation were synthesized for esterification. With 1 ： 1,2 ratio of benzyl alcohol and propionic acid in SPILs for 3.0 h under room temperature, the isolated yield achieves 90% and the selectivity achieves 99%. The product was immiscible with SPLs and could be separated simply by decantation after the reaction. The SPILs could be reused for more than 8 times without noticeable lowering of activity.

关 键 词：香料 丙酸苄酯 功能化离子液体 催化合成 

分 类 号：TQ245.24[化学工程—有机化工]