The Chemours Company
HYDROFLUORINATION OF 1233XF TO 244BB BY SBF5

Abstract:

A method hydrofluorinates an olefin of the formula: RCX.dbd.CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCXHCFYZ, where X, Y, and Z are independently the same or different and are selected from the group consisting of H, F, Cl, Br, and C.sub.1-C.sub.6 alkyl which is partially or fully substituted with chloro or fluoro or bromo; and R is a C.sub.1-C.sub.6 alkyl which is unsubstituted or substituted with chloro or fluoro or bromo. The method includes reacting the olefin with HF in the vapor phase, in the presence of SbF.sub.5, at a temperature ranging from about -30.degree. C. to about 65.degree. C. and compositions formed by the process.