Method for producing olefin

Details Method for producing olefin Method for producing olefin

2007-10-26

2011-12-20

Katakam, Sudhakar (Department: 1621)

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

Organic compounds

Halogen containing

C570S156000

Reexamination Certificate

active

08080696

ABSTRACT:
The present invention provides a method for producing an olefin represented by General Formula (II): RfCF═CH2(II) (wherein Rf is defined as below), wherein the method includes the step of contacting a fluorohalide represented by General Formula (I): RfCF2CH2X (I) (wherein Rf is H(CF2)n(n=1 to 8) or F(CF2)n(n=1 to 8), and X is Br or I) with a metal in a reaction medium of a polar organic solvent, or a mixed solvent of water and a polar organic solvent to conduct a dehalogenation reaction.The production method of the present invention provides olefins in a highly selective manner at a low cost and high yield under relatively mild reaction conditions.

REFERENCES:
patent: 2774798 (1956-12-01), Davis et al.
patent: 61-5032 (1986-01-01), None
patent: 1-207249 (1989-08-01), None
patent: 11-512110 (1999-10-01), None
International Search Report dated Jan. 29, 2008 in the International (PCT) Application PCT/JP2007/070946 of which the present application is the U.S. National Stage.
A.Y. Zapevalov et al., “α,α-Disubstituted polyfluoroalkenes”, Zhurnal Organicheskoi Khimii, 24(8), pp. 1626-1633, 1988.

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