Method of preparing fluorine-containing ethane derivatives
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United States of America Patent
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May 25, 1993
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N/A
app pub date -
Jul 14, 1992
filing date -
Apr 12, 1990
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Expired
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Abstract
A method of preparing fluorine-containing ethane derivatives using a catalyst mixture which comprises a metal halide and a sulfonic acid derivative is described. The method is particularly well suited for preparing CF.sub.3 CHCl.sub.2 (R123) from perchloroethylene and for preparing CF.sub.3 CH.sub.2 F (R134a) from trifluoroethylene.
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