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

所屬欄目:有機合成原料

2,5-二甲氧基苯乙胺的合成
黃紅霞1,林原斌2 (1. 桂林工學(xué)院 材料與化學(xué)工程系,廣西 桂林 541004;2. 湘潭大學(xué) 化學(xué)學(xué)院,湖南 湘潭 411105)
摘 要:選取了一條合理、成本相對低廉的合成2,5-二甲氧基苯乙胺新方法。在堿性條件下,對苯二酚經(jīng)醚化得到1,4-二甲氧基苯,收率95.0%,再選用高選擇性的溴化劑溴化后,收率90.0%,經(jīng)格氏反應和羥乙基化反應制備2,5-二甲氧基苯乙醇,收率75.0%,醇與對甲苯磺酰氯反應得到酯,收率97.0%,最后經(jīng)Gabriel反應可以制備相應的芳香乙胺化合物,收率70.0%。該路線(xiàn)反應較易,條件溫和,對設備要求較低,原料價(jià)廉易得,適合工業(yè)生產(chǎn)。
關(guān)鍵詞:2,5-二甲氧基苯乙胺;格氏反應;Gabriel反應
中圖分類(lèi)號:O625.63  文獻標識碼:A  文章編號: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
作者簡(jiǎn)介:黃紅霞(1975-),女,湖南張家界人,講師,博士研究生,主要從事教學(xué)工作和有機合成的研究。(E-mail:hhxhunan@yahoo.com.cn)
收稿日期:2007-03-13
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