摘要
应用CHBr_3/CHCl_3或CHBr_3/CCl_ 4和金属镁在一般的Grignard反应条件下与烯烃反应,制备偕溴氯环丙烷衍生物.该反应原料易得,反应条件温和,产率良好,后处理方便,是制备偕溴氯环丙烷衍生物的一种简便的新方法.文中研究了上述反应的单电子转移和自由基链循环的复杂反应机理.
The reaction of CHBr3/CHCl3 or CHBr3/CCl4 with magnesium under general Grignard reaction condition is studied and is for the first time found to produce dihalocarbene which is trapped with some different olefins to prepare the gem - dihalocyclopropane derivatives in good yields. The reaction having advantages of easy work - up, mild reaction condition and high yield is a novel convenient method for the generation of dihalocarbene. A possible mechanism (Single Electron Transfer, SET) is described. The effect of different reaction condition on the reaction is studied.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1996年第8期819-825,共7页
Acta Chimica Sinica
