METHOD FOR PRODUCTION OF 1,1,1,3,3-PENTAFLUOROPROPANE, METHOD FOR PRODUCTION OF 1,1,1,3,3-PENTAFLUORO-2-HALOGENO-3-CHLOROPROPANE, METHOD FOR PRODUCTION OF 1,1,1,2,3-HEXACHLOROPROPENE, METHOD FOR PRODUCTION OF 1,1,1,3,3-PENTAFLUORO-2,3-DICHLOROPROPANE Russian patent published in 1998 - IPC

FIELD: organic chemistry. SUBSTANCE: 1,1,1,3,3-pentafluoropropane is prepared by interaction of 1,1,1,3,3-pentafluoro-2,3-dichloropropane with hydrogen fluoride, the process is carried out in the presence of catalyst on the base of precious metal. 1,1,1,3,3-pentafluoro-2-halogeno-3-chloropropane is prepared by fluorination of halogenated propane having common formula I, the process is carried out by using of hydrogen fluoride in liquid phase in the presence of antimony trihalide and/or antimony pentahalide, molar amount of hydrogen fluoride is more by a factor of five (and even more) that for antimony trihalide and/or antimony pentahalide. 1,1,1,2,3,3-hexachloropropene is prepared by interaction of 1,1,1,2,2,3,3-heptachloropropane with aqueous solution of hydroxide of alkaline metal, the process is carried out in the presence of phase transfer catalyst. Desired products are obtained at high yields and at low power expense. EFFECT: effective industrial method for production of desired compounds is proposed. 21 cl