Use of alkali metal halides in the manufacture of 1, 1-difluoroe

Details Use of alkali metal halides in the manufacture of 1, 1-difluoroe Use of alkali metal halides in the manufacture of 1, 1-difluoroe

1996-01-05

1999-02-02

Siegel, Alan

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

Organic compounds

Halogen containing

C07C 1708

Patent

active

058667288

ABSTRACT:
A process is disclosed for the selective and high yield preparation of 1,1-difluoroethane (HFC-152a). The process comprises contacting chloroethene with anhydrous hydrogen fluoride in a liquid phase at a temperature from about 50.degree. C. and 95.degree. C. while in the presence of a tin(IV) catalyst and an alkali metal halide.

REFERENCES:
patent: 2830099 (1958-04-01), Swamer
patent: 3317619 (1967-05-01), Hedge et al.
patent: 3536769 (1970-10-01), Seki et al.
patent: 3904701 (1975-09-01), Schultz et al.
patent: 4147733 (1979-04-01), Fiske et al.
patent: 4766258 (1988-08-01), Komatsu et al.
patent: 4968850 (1990-11-01), Franklin et al.
patent: 5208395 (1993-05-01), Elsheikh
patent: 5306850 (1994-04-01), Darago
patent: 5396001 (1995-03-01), Pennetreau
A. F. Clifford, et al. The Hydrogen Fluoride Solvent System--I. A Qualitative Survey of Acids. J. Inorg. Chem. 1957, vol. 5 pp. 57 to 70.
L. E. Levchuk, et al. Synthesis and Mossbauer and Vibrational Spectra of Some New Tin(IV)--Flourine Compounds. Inorganic Chemistry, vol. 11, No. 1, 1972, pp. 43 to 50.

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