The present invention provides a method for the preparation of suitable chlorofluorocarbon and hydrochlorofluorocarbon materials or chlorofluorocarbon and hydrochlorofluorocarbon alkene and alkyne intermediates which serve as useful feedstock for fluorination and reduction to cis-1,1,1,4,4,4-hexafluoro-2-butene. Also presented is a continuous process for the production of cis-1,1,1,4,4,4-hexafluoro-2-butene from the alkene and alkyne intermediates.
Azeotropic compositions comprising hydrogen fluoride and fluorocarbons
申请人:The Chemours Company FC, LLC
公开号:US10851303B2
公开(公告)日:2020-12-01
The present application discloses compositions comprising hydrogen fluoride and fluorinated compounds (e.g., hydrochlorofluorocarbons), wherein the fluorinated compound is present in the composition in an amount effective to form an azeotrope composition or azeotrope-like composition with the hydrogen fluoride.
Condensation du chloroforme avec des oléfines fluorées en milieu basique
作者:Thoai Nguyen、Claude Wakselman
DOI:10.1016/s0022-1139(00)82352-0
日期:1991.12
The condensation of CHCl3 with CF3CF = CF2 under phase-transfer catalysis leads mainly to CF3CFH-CF = CCl2 (1a). In the case of CF2 = CFCl, a cycloproparke adduct 3b is obtained along with CHClF-CF = CCl2 (1b). The yields of adducts 1a,b or 3b are ca. 30%. As the working conditions are simple and the starting materials are readily available, the method could provide an interesting route to some perhalogeno-cyclopropanes and to short-chain hydro-halogeno alkenes.
HASZELDINE, R. N.;ROWLAND, R.;TIPPING, A. E.;TYRRELL, G., J. FLUOR. CHEM., 1982, 21, N 2, 253-259
作者:HASZELDINE, R. N.、ROWLAND, R.、TIPPING, A. E.、TYRRELL, G.
DOI:——
日期:——
Azeotropic Compositions Comprising Hydrogen Fluoride and Fluorocarbons
申请人:The Chemours Company FC, LLC
公开号:US20190040321A1
公开(公告)日:2019-02-07
The present application discloses compositions comprising hydrogen fluoride and fluorinated compounds (e.g., hydrochlorofluorocarbons), wherein the fluorinated compound is present in the composition in an amount effective to form an azeotrope composition or azeotrope-like composition with the hydrogen fluoride.