FIELD: organic chemistry. SUBSTANCE: 1-tetrafluoro ethylene is used as reagent 1, appropriate polychloro polyfluoroalkyl being used as reagent 2. Reaction is carried out in the presence of catalyst, temperature 20-150 C being preferred. Anhydrous aluminium chloride or anhydrous zirconium tetrachloride or anhydrous aluminium clorfluoride is used as mentioned above catalyst. Desired fluorinated product has essential formula R-CCl2CF2CF3 where R is perfluoroalkyl, perchlroalkyl, polyfluoroalkyl or polychloralkyl. EFFECT: improves efficiency of method. 4 cl
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