摘要
采用微波辐射技术,以对甲苯磺酸(PTSA)为催化剂,没食子酸和异丁醇为原料,直 接酯化合成没食子酸异丁酯。研究了微波功率、辐射时间、催化剂的用量、酸醇摩尔比等因素 对于酯化反应产率的影响,井对产品进行了分析和鉴定。通过正交试验探讨出最佳的反应条 件为:没食子酸与异丁醇摩尔比1:17,没食子酸与催化剂摩尔比1:0.05,微波功率510 W (没食子酸用量10.94 g),辐射时间60 min,平均酯化产率为86.3%。
Iso-butyl gallate was synthesized by esterification of gallic acid with iso-butyl alcohol catalyzed by p-toluenesulfonic acid (PTSA) under microwave irradiation. The optimum reaction condition was as follows: molar ratio of gallic acid to iso-butyl alcohol 1 : 17, molar ratio of gallic acid to catalyst 1 : 0.05, microwave irradiation power 510 W ( gallic acid 10.94 g), for 60 min. Average yield of iso-butyl gallate was 86.3 %.
出处
《林产化学与工业》
EI
CAS
CSCD
2005年第B10期113-115,共3页
Chemistry and Industry of Forest Products
关键词
微波辐射
催化合成
没食子异丁酯
microwave irradiation
esterification
iso-butyl gallate