第 40 卷第 3 期Vol. 40 No. 3
2010 年 6 月Jun 2010

所属栏目:医药及中间体

4-甲氧基二苯甲酰甲烷合成新方法研究
李敏谊1,魏 丹2,董 刚1,林序吟1,周 锐1 (1.广东药学院 药科学院,广东 广州 510006;2.中山市食品药品监督管理局 广东 中山 528437)
摘 要:研究了微波辐射合成4-甲氧基二苯甲酰甲烷。得到优化合成条件为:n(对甲氧基苯乙酮) ∶ n(苯甲酸乙酯) ∶ n(氨基钠)=1 ∶ 15 ∶ 4,微波辐射功率320 W,反应时间为45 min,与传统加热法相比,反应时间从7 h减少到45 min,收率从61.4%增加到77.4%。其结构经元素分析、IR和1H NMR确证。
关键词:4-甲氧基二苯甲酰甲烷;微波辐射;对甲氧基苯乙酮;苯甲酸乙酯
中图分类号:O625.4  文献标识码:A  文章编号:1009-9212(2010)03-0037-03
Synthesis of 4-Methoxy-dibenzoyl methane with Microwave Irradiation
LI Min-yi1,WEI Dan2,DONG Gang1,LIN Xu-yin1,ZHOU Rui1 (1. Department of Pharmacy,Guangdong Pharmaceutical University,Guangzhou 510006,China;2. The Food and Drug Administration of Zhongshan,Zhongshan 528437,China)
Abstract:Microwave irradiation was used for the preparation of 4-methoxy-dibenzoyl methane from p-methoxy acetophenone and benzoate. The optimum conditions were found as follows:the molar ratio of p-methoxy acetophenone, ethyl benzoate and NaNH2 was 1 ∶ 15 ∶ 4, the power of microwave irradiation was 320 W and the reaction time was 45 min. The yield of the target compound was 77.4%. In comparison, the traditional method gives only 61.4% yield in much longer reaction time of 7 h. The product structure was confirmed by means of elemental analysis, IR and 1H NMR.
Key words:4-methoxy-dibenzoylmethane;microwave irradiation;p-methoxy acetophenone; ethyl benzoate
作者简介:李敏谊(1955-),女,副教授,硕士生导师,主要从事有机药物及精细化学品的合成研究。(E-mail:liminyigz@yahoo.com.cn)
收稿日期:2010-05-10