PURPOSE: To efficiently obtain the subject compounds expectable for use similar to hydrocarbons such as foaming agent, coolant or detergent in high yield by using hexafluoropropanes as raw material and subjecting to reducing reaction with H2 in the presence of hydrogenating catalyst.
CONSTITUTION: Hexafluoropropanes having difluoromethylene group expressed by formula I (0≤m≤1) such as 1,3-dichloro-1,1,2,2,3,3-hexafluoropropane is subjected to reducing reaction with H2 using reducer such as KBH4 in the presence of hydroxylating catalyst such as chloroplatinic acid/activated carbon bringing into contact in gas phase at 100-300°C for 0.1-300sec or reacting in liquid phase at normal temperature-150°C in normal pressure-under pressure of 10kg/cm2 to afford the aimed compounds expressed by formula II (1≤n≤2) such as 1-chloro-1,1,2,2,3,3-hexafluoropropane and expressed by formula III (1≤n≤3) such as 1,1,1,2,2-pentafluoropropane.
SAMEJIMA SHUNICHI
YOSHITAKE MASARU
ONISHI KEIICHI
TANUMA TOSHIHIRO
| JPH04503209A | 1992-06-11 |