Fluorination process

Details Fluorination process Fluorination process

1992-10-23

1994-02-01

Siegel, Alan

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

Organic compounds

Halogen containing

570169, C07C 1708

Patent

active

052833828

ABSTRACT:
Process for the preparation of fluorinated alkanes by contacting a starting material of halogenated alkene or alkane with 1 to 150 molar equivalents based on catalyst of HF, 1 to 30 molar equivalents based on catalyst of a dehydrating agent and less than 100 molar equivalents based on catalyst of a starting material, the catalyst being selected from niobium oxide or tantalum oxide, at a temperature of 0.degree. C. to 185.degree. C. The preferred dehydrating agent is a combination of chlorosulfonic acid and thionyl chloride.

REFERENCES:
patent: 4258225 (1981-03-01), Feiring
Pavlath, A. E., "Aromatic Fluorine Compounds", p. 45, OD412.F1P3 (1962).
Barbour, A. K., "Advances in Fluorine Chemistry", p. 184, vol. 3, QD181.F1A33V.3 (1963).
Feiring, A. E., "Chemistry in Hydrogen Fluoride v. Catalysts for Reaction of HF with Halogenated Olefins", pp. 7-18, 13(1979).
Feiring, A. E., Journal of Fluorine Chemistry, 13, 7-18 (1979).
Cotton Advanced Inorganic Chem. 2nd ed (1966) pp. 920-923.

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