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3-氯头孢烯酸的合成
Authors
吴鹏程
张越
杜红霞
董博芳
Publication date
1 January 2005
Publisher
Abstract
以3 羟基 7 苯乙酰基 3 头孢烯酸二苯甲酯为原料,经过氯代、酯水解、酰胺水解3步反应制备了药物头孢克洛的中间体3 氯头孢烯酸(7 氨基 3 氯 3 头孢烯 4 酸,7 ACCA),总收率73%。酶解反应中以c(NaHCO3)=1×10-3mol/L的水溶液代替常用的氨水溶液,缩短了反应时间。三氯化磷作为氯代试剂,间甲酚作为酯水解试剂,反应中采用TLC进行终控,展开剂分别为V(环己烷)∶V(乙醇)=1∶1和V(丙酮)∶V(石油醚)∶V(乙酸)=5∶5∶1
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Last time updated on 29/11/2016