Patent ID: 7692048

Claim:
A method for producing a fluorine-containing halide, comprising reacting a fluorine-containing sulfonyl halide with a metal halide in the presence or absence of a solvent, the fluorine-containing sulfonyl halide being represented by general formula (1): wherein R 1 , R 2 and R 3 are the same or different, each representing a halogen atom, a hydrogen atom or a monovalent hydrocarbon group which may contain one or more atoms of one or more kinds selected from fluorine, oxygen, nitrogen and sulfur atoms; at least one of R 1 , R 2 and R 3 is a halogen atom; Z is Cl or F; provided that when none of R 1 , R 2 and R 3 is a fluorine atom, at least one of R 1 , R 2 and R 3 is a monovalent fluorine-containing hydrocarbon group, and when Z is F, R 1 and R 3 are both fluorine atoms and R 2 is a CF 2 ═CFOCF 2 — group; the metal halide being represented by general formula M 1 X, wherein M 1 is Ma or (Mb) 1/2 , Ma being an alkali metal, Mb being an alkaline earth metal, and X being Br or I; the fluorine-containing halide being represented by the general formula shown below: wherein R 1 , R 2 , R 3 and X are the same as above.