第 44 卷第 5 期 Vol. 44 No. 5 2014 年 10 月 Oct 2014

所属栏目：香精香料 相转移催化制备甘油缩醛香料

宋 如 （河西学院 化学化工学院 西部资源环境化学重点实验室，甘肃 张掖 734000）

摘　要：以苯甲醛和甘油为原料，环己烷为带水剂，苄基三乙基氯化铵相转移催化剂催化，制备了苯甲醛甘油缩醛香料。考察了催化剂用量、反应时间、反应物配比及带水剂用量对产品收率的影响，优化反应条件为：催化剂用量 3%、环己烷 8 mL 、醇醛物质的量之比 1.3∶1，反应时间为 3 h。优化条件下产物的收率达 90.3%。。

关键词：相转移催化；甘油；苯甲醛；缩合反应；缩醛

中图分类号：TQ225.43　　文献标识码：A　　文章编号：1009-9212（2014）05-0065-05

Preparation of Glycerol Acetal by Phase Transfer Catalysis

SONG Ru (College of Chemistry and Chemical Engineering, Key Laboratory of Resources and Environmental Chemistry of West China, Hexi University, Zhangye 734000, China)

Abstract：In order to solve the problems of aldehydes perfume which are more volatile and unstable, benzaldehyde glycerol acetal was synthesized from benzaldehyde and glycerol. In the process cyclohexane was used as the water carrying agent and benzyl triethyl ammonium chloride as the phase transfer catalyst. The effects of the reaction time, the molar ratio of reactants and the loading of catalyst on the yield of acetals were investigated. The optimum reaction conditions were as follows: the molar ratio of glycerol to phenylaldehyde was 1.3:1, the mount of catalyst was 3%(m/m), the amount of cyclohexane was 8 mL and reaction time was 3 h. The reaction yield could reach 90.3% under the optimal reaction conditions.

Key words：phase transfer catalysis; glycerol; benzaldehyde; condensation; acetal

作者简介： 宋如（1979-），男，河南许昌人，讲师，硕士研究生，研究方向：精细化学品的合成与应用（E-mail：njut_songru@126.com）。

收稿日期： 2014-09-2