A NEW METHOD FOR THE GENERATION OF DIHALOCARBENES  

作　　者：黄乃聚 徐良衡 

机构地区：[1]Department of Chemistry, Fudan University, Shanghai 200433, PRC

出　　处：《Chinese Science Bulletin》1991年第10期831-834,共4页

摘　　要：Addition of dihalocarbene with olefin is the most important method to prepare the derivatives of gem-dihalocyclopropanes. Up till now, the method reported by Makosza in 1969, which is α-elimination of haloform by strong base under phase transfer catalysis, is the most widely used one in the generation of dihalocarbenes. But it would cause the side reaction of groups in olefin molecules, which are sensitive to bases. Besides, haloform, 3—10 equivalents of olefin, is used to act as a solvent, so it is impossible to control the

关 键 词：CARBENE gem-dihalocyclopropane OLEFIN addition. 

分 类 号：N[自然科学总论]