Fluorine-19 coupling constants and chemical shifts in trifluorocyclopropanes
作者:Kenneth Lee. Williamson、Beverly A. Braman
DOI:10.1021/ja01000a032
日期:1967.11
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.