1,2,2-tribromocyclopropanecarboxylic acid and derivatives—Valuable intermediates for four carbon cyclopropane and cyclopropene synthons
作者:Ahmad R. Al Dulayymi、Juma'a R. Al Dulayymi、Mark S. Baird、Michelle E. Gerrard、Gani Koza、Samantha D. Harkins、Evan Roberts
DOI:10.1016/0040-4020(95)01123-4
日期:1996.3
2-bromocyclopropene carboxylate. while modification of the ester group followed by reaction with methyllithium leads to a series of related four-carbon cyclopropenes. The tribromo-ester is also readily converted into 1,1,2,2-tetrabromocyclopropane, a valuable three-carbon cyclopropene synthon.
通过α-溴丙烯酸甲酯的二溴环丙烷化,可以容易地获得1,1,2-三溴环丙烷甲酸甲酯。与甲基锂在低温下反应提供了2-溴环丙烯羧酸甲酯的简单路线。而酯基的修饰然后与甲基锂反应会生成一系列相关的四碳环丙烯。三溴代酯也很容易转化为1,1,2,2-四溴环丙烷,这是一种有价值的三碳环丙烯合成子。