第 37 卷第 3 期Vol. 37 No. 3
2007 年 6 月Jun 2007

所属栏目:有机合成原料

2,5-二甲氧基苯乙胺的合成
黄红霞1,林原斌2 (1. 桂林工学院 材料与化学工程系,广西 桂林 541004;2. 湘潭大学 化学学院,湖南 湘潭 411105)
摘 要:选取了一条合理、成本相对低廉的合成2,5-二甲氧基苯乙胺新方法。在碱性条件下,对苯二酚经醚化得到1,4-二甲氧基苯,收率95.0%,再选用高选择性的溴化剂溴化后,收率90.0%,经格氏反应和羟乙基化反应制备2,5-二甲氧基苯乙醇,收率75.0%,醇与对甲苯磺酰氯反应得到酯,收率97.0%,最后经Gabriel反应可以制备相应的芳香乙胺化合物,收率70.0%。该路线反应较易,条件温和,对设备要求较低,原料价廉易得,适合工业生产。
关键词:2,5-二甲氧基苯乙胺;格氏反应;Gabriel反应
中图分类号:O625.63  文献标识码:A  文章编号:1009-9212(2007)03- 0070-03
Synthesis of 2,5-Dimethoxy Phenethylamine
HUANG Hong-xia1,LIN Yuan-bin2 (1. The Department of Material and Chemistry of Guilin Institute of Technology,Guilin 541004,China;2. College of Chemistry,Xiangtan University,Xiangtan 411105,China)
Abstract:A new route to produce 2,5-dimethoxy phenethylamine was introduced in the paper. Under the basic condition,1,4-dihydroxy benzene was reacted with dimethyl sulfate to get 1,4-dimethoxy benzene with 95.0% of the yield. 1,4-dimethoxy benzene was brominated with high-selective bromating agent to produce 1,4-dimethoxy benzene bromide with 90% of yield. 2,5-dimethoxy phenethanol was synthesized from 1,4-dimethoxy benzene bromide through Grignard reaction and hydroxyethylation(the yield 75.0%),and esterification(the yield 97.0%) and Gabriel reaction(the yield 70.0%). Though there are five steps in this route,but the conditions are mild and easy to carry out,so it is of extensive industrial perspective.
Key words:2,5-dimethoxy phenethylamine;Grignard reaction;Gabriel reaction
作者简介:黄红霞(1975-),女,湖南张家界人,讲师,博士研究生,主要从事教学工作和有机合成的研究。(E-mail:hhxhunan@yahoo.com.cn)
收稿日期:2007-03-13
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