Method for producing dichloropentafluoropropanes

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

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C07C 1728, C07C 2118

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052275477

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.

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patent: 3795710 (1974-03-01), Signeurin
Freidel-Craft and Related Reaction, Ed. George A. Olah, Dow Chemical of Canada, Ltd, Ontario, Canada, (1963), pp. 26-29.
Collection of Czechoslovak Chemical Communications, vol. 36, 1971, (Prague, CST), 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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