Process for preparing chlorofluorocarbons via an in situ generat

Details Process for preparing chlorofluorocarbons via an in situ generat Process for preparing chlorofluorocarbons via an in situ generat

1989-06-14

1990-05-15

Evans, J. F.

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

Organic compounds

Halogen containing

502151, C07C 1724, C07C 1720, C07C 1908, B01J 3100

Patent

active

049259938

ABSTRACT:
A process of isomerizing a chlorofluorocarbon of the formula: ##STR1## wherein X is chlorine or fluorine to the compound of the formula: ##STR2## The process comprises contacting the chlorofluorocarbon with an activated aluminum trichloride catalyst. The catalyst is prepared by contacting the chlorofluorocarbon with anhydrous aluminum trichloride in the presence of a metal. The metal is selected from the group consisting of stainless steel, chromium, manganese, molybdenum, tungsten and combinations thereof.

REFERENCES:
patent: 2598411 (1952-05-01), Miller et al.
patent: 2924579 (1960-02-01), Young
patent: 4748284 (1988-05-01), Gozzo et al.
Miller et al., "J. Am. Chem. Soc.", vol. 72, (Feb. 1950), pp. 705-707.
Okuhara, 43 J. Org. Chem. 2745 (1978).

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