A regio- and stereo-selective route to 1,1,3- and 1,2,3-trihalogenobutadienes by dehydrohalogenation of alkyl-substituted 1,1,2,3-tetrahalogenocyclopropanes
作者:Mark S. Baird、Balvinder S. Mahli、Lee Sheppard
DOI:10.1039/p19900001881
日期:——
reaction with dichlorocarbene generated under phase-transfer conditions, or dibromocarbene generated either by phase transfer or from the thermolysis of phenyl-(tribromomethyl)mercury. 1,1,2,3-Tetrahalogenocyclopropanes are also obtained by reaction of the corresponding vicinal bromochloro- and dibromo-alkenes with dichlorocarbene under phase-transfer conditions or of the latter alkenes with phenyl(