PURPOSE: To produce the title compound useful as a blowing agent, refrigerant, detergent, etc., in high purity, in high yield and efficiently by reducing a difluoromethylene group-containing trifluoropropane with hydrogen in the presence of a hydrogenating catalyst.
CONSTITUTION: A difluoromethylene group-containing trifluoropropane shown by formula I (n is 0≤-≤4) is reacted with hydrogen in the presence of a hydrogenating catalyst to give a hydrogen-containing trifluoropropane shown by formula II (n is 1≤-≤5) and a hydrogen-containing difluoropropane shown by formula III (n is 1≤-≤6). For example, 1,1,1,3,3-pentachloro-2,2,3- trifluoropropane or 1,1,1,3-tetrachloro-2,2,3-trifluoropropane is preferable as the starting difluoromethylene group-containing trifluoropropane. This method can be carried out in high selectivity, in high yield and in high purity.
SAMEJIMA SHUNICHI
YOSHITAKE MASARU
ONISHI KEIICHI
TANUMA TOSHIHIRO
