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一种平喘药中间体1,1-环丙烷二甲醇的制备 被引量:1

STUDIES ON PREPARATION OF 1,1-BIS(HYDROXYMETHYL)CYCLOPROPANE AS INTERMEDIATE FOR A ANTIASTHMATIC DRUG
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摘要 以季戊四醇与氢溴酸为原料、硫酸二乙酯-醋酸为催化剂,回流10h合成二溴新戊二醇,收率为91.7%;以二溴新戊二醇与锌粉为原料、乙醇-水为溶剂合成1.1-环丙烷二甲醇,最佳条件是:n(二溴新戊二醇)∶n(锌粉)=1∶1.05,反应温度80℃(微回流),反应时间7h,收率为87.3%,纯度为98.7%,并用元素分析、IR和1 H NMR对1.1-环丙烷二甲醇结构进行了表征。 Refluxing for 10 h, 2, 2-bis (bromomethyl)-l, 3-propanediol was synthesised at yield of 91.7% from pentaerythrito[ and bromohydric acid with diethylsulfate and acetic acid as catalysts. Then at the molar ratio of 1 -1 1.05 and 80 C, 1,1-bis(hydroxymethyl) cyclopropane was obtained through reacting 2,2-bis(bromomethyl)-l, 3-propanediol with zinc powder in ethanol-water medium for 7 h. The yield and purity were 87.3% and 98.7% respectively. The structures were characterized by elementary analysis, IR and 1H NMR.
出处 《精细石油化工》 CAS CSCD 北大核心 2013年第5期37-40,共4页 Speciality Petrochemicals
基金 国家海洋公益性行业科研专项(201305007) 江苏省高校科研成果产业化推进项目(JHB2011-60) 江苏省六大人才高峰资助项目(2009年) 连云港市产学研联合研究项目(CXY1212) 江苏省海洋资源开发研究院开放课题(JSIMR201203)
关键词 平喘药 中间体 1 1-环丙烷二甲醇 制备 antiasthmatic drug intermediate 1,1-bis(hydroxymethyl) cyclopropane preparation
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