The present invention provides the novel chlorofluorohydrocarbon 1,1-difluoro-1,4-dichlorobutane, and a process for its preparation comprising reacting 1,1,1,4-tetrachlorobutane or 1,1,4-trichlorobut-1-ene with hydrogen fluoride in the liquid or vapour phase. The product has useful solvent properties and is also useful in synthetic chemistry for the introduction of fluorocarbon functionality.
Reduction of some polyhalogenato- and polyacetoxy-allylic compunds using tributyltin hydride in the presence or absence of palladium catalyst
作者:F. Guibé、Yang Ting Xian、G. Balavoine
DOI:10.1016/s0022-328x(00)99714-6
日期:1986.5
The radical tributyltinhydridereduction of 1,1,1,4-tetrachlorobut-2-ene yields a mixture of the expected 1,1,4-trichlorobut-2-ene and 1,1,4-trichlorobut-1-ene resulting from preferential abstraction of a chlorine atom from the trichloromethyl group. The palladium-catalyzed reduction follows an entirely different course, giving 1,1-dichlorobutadiene exclusively and quantitatively. The palladium-catalyzed