第 38 卷第 2 期Vol. 38 No. 2
2008 年 4 月Apr 2008

所属栏目:医药及中间体

4-羟基-3-甲氧基苯基丙酮的合成
刘 颖,刘登科,刘 默,王平保 (天津药物研究院,天津 300193)
摘 要:4-羟基-3-甲氧基苯基丙酮是重要的有机合成中间体。以香草醛为起始原料,与硝基乙烷进行Henry反应脱水制得2-甲氧基-4-(2-硝基-1-丙烯基)苯酚,然后经钯碳-甲酸铵催化氢转移还原反应得到2-甲氧基-4-(2-肟基丙基)苯酚,再与稀硫酸溶液反应得到目标化合物4-羟基-3-甲氧基苯基丙酮,纯度>99.3%(HPLC),总收率57.1%。化学结构经1H NMR、13C NMR、13C NMR(DEPT-135°)确证。
关键词:4-羟基-3-甲氧基苯基丙酮;Henry缩合反应;钯碳-甲酸铵;催化氢转移还原反应;香草醛
中图分类号:TQ244.3  文献标识码:A  文章编号:1009-9212(2008)02- 0045-03
Synthesis of 4-Hydroxy-3-methoxyphenylacetone
LIU Ying,LIU Deng-ke,LIU Mo,WANG Ping-bao (Tianjin Institute of Pharmaceutical Research,Tianjin 300193,China)
Abstract:The compound 4-hydroxy-3-methoxyphenylacetone(1)was a key intermediate of drug synthesis. Vanillin was treated with nitroethane in presence of n-butylamine and glacial acetic acid in toluene and refluxing for 8 h to give 2-methoxy-4-(2- nitro-1- propenyl) phenol(2). And then the compound(2)was catalytic transfer hydrogenated with Pd/C-HCOONH4 giving product 2-methoxy-4-(2-oximepropenyl) phenol(3). 1 was prepared by reaction of the compound 3 with aqueous sulfuric acid. The total yield of product was 57.1% and the purity was greater than 99.3%. Synthetic procedure became simple after optimization of this reaction conditiom. The chemical structure of the target product was characterized by 1H NMR,13C NMR,13C NMR(DEPT-135°).
Key words:4-hydroxy-3-methoxyphenylacetone;Henry condensation;Pd/C-HCOONH4;catalytic transfer hydrogenation;vanillin
基金项目:天津市科技发展计划项目(043185111-7)资助。
作者简介:刘 颖(1982-),女,天津人,研究实习员。从事药物合成方面的工作。
联 系 人:刘登科(1963-),男,陕西岐山人,副研究员。研究方向:创新药物的设计、合成、天然药物结构修饰与改造。(E-mail:liuDK63@eyou.com)。
收稿日期: 2008-02-0