Method for producing dichloropentafluoropropanes

Details Method for producing dichloropentafluoropropanes Method for producing dichloropentafluoropropanes

1994-04-18

1995-07-18

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 1728

Patent

active

054343216

ABSTRACT:
A method for producing a dichloropentafluoropropane, which comprises reacting dichlorofluoromethane (R21) with tetrafluoroethylene (4F) in the presence of a Lewis acid catalyst for addition reaction to obtain dichloropentafluoropropane, wherein a halide containing at least one element selected from the group consisting of Sb, Nb, Ta, B, Ga, In, Zr, Hf and Ti, or AlBr.sub.3, or AlI.sub.3, is used as the Lewis acid.

REFERENCES:
patent: 2462402 (1949-02-01), Joyce
patent: 3795710 (1974-03-01), Seigneurin
patent: 5185483 (1993-02-01), Aoyama et al.
Olah Friedel-Crafts & Related Reactions (1963) pp. 26-29.
Collection of Czechoslovak Chemical Communications, vol. 36, 1971, (Prague, CS), O. Paleta et al.: "Addition reactions of haloolefins. XI. Reaction of tetrafluoroethylene with monofluoromethanes in the presence of aluminum chloride", pp. 1867-1875.

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