无带水剂合成没食子酸正辛酯的研究  

Research on Synthesis of n-Octyl Gallate without Water-carrying Agent

作　　者：陈茜文[1] 谷文众[2] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]中南林业科技大学生命科学与技术学院,湖南长沙410004

出　　处：《林产化学与工业》2010年第2期57-60,共4页Chemistry and Industry of Forest Products

基　　金：湖南省教育厅基金资助项目(07C851)

摘　　要：研究采用无带水剂,以非氧化性酸替代浓硫酸作催化剂合成没食子酸辛酯。并研究了不同反应条件对没食子酸辛酯制备的影响,利用正交设计原理优化制备工艺条件。实验结果表明:优化后的合成条件为酸醇比1∶6,催化剂用量12%,反应温度120℃,反应时间为4 h。在此条件下平均酯化产率为93.68%。A new process of synthesizing n-octyl gallate was studied by using non-oxidative acid to replace concentrated sulfuric acid as catalyst without addition of water-carrying agent. The effects of different preparation parameters were studied with orthogo- nal test. The results show that optimum conditions of synthesizing octyl gallate were obtained as following：ratio of acid to alcohol 1 ： 6, catalyst dose 12 %, reaction temperature 120 ℃, reaction time 4 h, average yield of product 92.3 %.

关 键 词：没食子酸正辛酯 直接酯化 催化合成 

分 类 号：TQ245.24[化学工程—有机化工] TQ351