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 1,1,1,2,3,3-HEXACHLOROPROPENE AND METHOD FOR PRODUCTION OF 1,1,1,3,3-PENTAFLUORO-2,3-DICHLOROPROPANE

摘要

FIELD: organic chemistry. SUBSTANCE: 1,1,1,3,3-pentafluoropropane is prepared by interaction of 1,1,1,3,3-pentafluro-2,3-dichloropropane with hydrogen fluoride in the presence of catalyst on the base of precious metal. Production of 1,1,1,3,3-pentafluro-2-halogeno-3-chloropropane involves fluorination of halogenated propane having formula I with the help of hydrogen fluoride. The process is carried out in liquid phase in the presence of antimony trihalide and/or antimony pentahalide, molar quantity of hydrogen fluoride is 5 times more that for antimony trihalide and/or antimony pentahalide. Method for production of 1,1,1,2,3,3-hexachloropropane involves interaction of 1,1,1,2,2,3,3-heptachloropropane with aqueous solution of alkali metal hydroxide in the presence of interphase catalyst. EFFECT: improved efficiency of the method, increased yield of desired product, decreased cost of the method.