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第 37 卷第 2 期Vol. 37 No. 2
2007 年 4 月Apr 2007

所屬欄目:農藥及中間體

6,11-二氫二苯駢[b,e]氧雜 -11-酮-2-乙酸的合成
汪 淼,楊藝虹,張 珩,楊建設,吳春姍 (武漢工程大學(xué) 湖北省新型反應器與綠色化學(xué)工藝重點(diǎn)實(shí)驗室,湖北 武漢 430073)
摘 要:采用對羥基苯乙酸(Ⅱ)和苯酞為原料,在甲醇鈉的催化下,以n(Ⅱ) ∶ n(苯酞) ∶ n(甲醇鈉)=1.0 ∶ 1.1 ∶ 2.2,于130℃反應7 h制備4-(2-羧基芐氧基)苯乙酸(Ⅲ)。Ⅲ與乙酰氯經(jīng)氯化、環(huán)合得6,11-二氫二苯駢[b,e]氧雜 -11-酮-2-乙酸(Ⅰ),該步優(yōu)化的反應條件為:n(Ⅲ) ∶ n(乙酰氯)=1 ∶ 1.25,反應溫度為100℃,反應時(shí)間為6 h。以Ⅱ計,總收率達48.16%,Ⅰ的結構經(jīng)IR、1H NMR和MS確證。
關(guān)鍵詞:對羥基苯乙酸;苯酞;4-(2-羧基芐氧基)苯乙酸;環(huán)合
Synthesis of 6,11-Dihydro-11-oxodibenz[b,e]oxepin-2-acetic Acid
WANG Miao,YANG Yi-hong,ZHANG Heng,YANG Jian-she,WU Chun-shan (Hubei Key Laboratory of Novel Chemical Reactor & Green Chemical Technology,Wuhan Institute of Technology,Wuhan 430073,China)
Abstract:4-(2-Carboxybenzyloxy)phenylacetic acid (Ⅲ)was synthesized from 4-Hydroxyphenyl acetic acid(Ⅱ)and phthalide in the presence of the catalyst sodium methoxide. The molar ratio of reactants(Ⅱ ∶ phthalide ∶ sodium methoxide)was 1.0 ∶ 1.1 ∶ 2.2,the reaction time was 7 h and reaction temperature was 130℃. 6,11-Dihydro-11-oxodibenz[b,e]oxepin-2-acetic acid(Ⅰ) was synthesized from Ⅲand acetyl chloride through two-step reactions including chlorination and cyclization. The optimum reaction conditions were as follows:n(Ⅲ) ∶ n(acetyl chloride)=1 ∶ 1.25,reaction time 6 h and reaction temperature 100℃. The overall yield that was calculated from Ⅱ was 48.16%. Structure of Ⅰ was characterized by IR,1H NMR and MS.
Key words:4-hydroxyphenyl acetic acid;phthalide;4-(2-carboxybenzyloxy)phenylacetic acid;cyclization
作者簡(jiǎn)介:汪 淼(1982-),女,湖北宜昌人,碩士研究生,主要從事藥物合成研究。(E-mail:wangmiao_911@163.com)
聯(lián) 系 人:楊藝虹(1954-),女,教授,碩士生導師,主要從事制藥工程專(zhuān)業(yè)教學(xué)及藥物研究工作。
收稿日期:2007-01-13
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