第 38 卷第 2 期 |  | Vol. 38 No. 2 | 2008 年 4 月 | Apr 2008 |
|
所屬欄目:醫藥及中間體
4-羥基-3-甲氧基苯基丙酮的合成 |
劉 穎,劉登科,劉 默,王平保
(天津藥物研究院,天津 300193) |
摘 要:4-羥基-3-甲氧基苯基丙酮是重要的有機合成中間體。以香草醛為起始原料,與硝基乙烷進(jìn)行Henry反應脫水制得2-甲氧基-4-(2-硝基-1-丙烯基)苯酚,然后經(jīng)鈀碳-甲酸銨催化氫轉移還原反應得到2-甲氧基-4-(2-肟基丙基)苯酚,再與稀硫酸溶液反應得到目標化合物4-羥基-3-甲氧基苯基丙酮,純度>99.3%(HPLC),總收率57.1%;瘜W(xué)結構經(jīng)1H NMR、13C NMR、13C NMR(DEPT-135°)確證。 |
關(guān)鍵詞:4-羥基-3-甲氧基苯基丙酮;Henry縮合反應;鈀碳-甲酸銨;催化氫轉移還原反應;香草醛 |
中圖分類(lèi)號:TQ244.3 文獻標識碼:A 文章編號: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 |
|
基金項目:天津市科技發(fā)展計劃項目(043185111-7)資助。
|
作者簡(jiǎn)介:劉 穎(1982-),女,天津人,研究實(shí)習員。從事藥物合成方面的工作。
|
聯(lián) 系 人:劉登科(1963-),男,陜西岐山人,副研究員。研究方向:創(chuàng )新藥物的設計、合成、天然藥物結構修飾與改造。(E-mail:liuDK63@eyou.com)。
|
收稿日期: 2008-02-0
|
|