Process for preparing fluorine-containing ethane derivatives

Details Process for preparing fluorine-containing ethane derivatives Process for preparing fluorine-containing ethane derivatives

1992-09-08

1993-07-13

Siegel, Alan

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

Organic compounds

Halogen containing

570168, C07C 1700

Patent

active

052275469

ABSTRACT:
A process for preparing fluorine-containing ethane derivatives using hydrogen fluoride and a catalytically active formulation comprising a tantalum fluorosulfonate compound or a niobium fluorosulfonate compound is described. The process is particularly suitable for preparing ethane derivatives which contain a CF.sub.3 group, for example for preparing C.sub.3 CHCl.sub.2 (R123) from perchloroethylene.

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Feiring, J. Fluorine Chem. 19:7-18 (1979).
Andrews et al., J. Fluorine Chem. 13:273-78 (1979).

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