Process for the preparation of hexafluorobutane, and...

Details Process for the preparation of hexafluorobutane, and... Process for the preparation of hexafluorobutane, and...

C - Chemistry, Metallurgy

07

C

C07C 19/08 (2006.01) C07C 17/08 (2006.01) C07C 17/21 (2006.01) C07C 17/23 (2006.01) C07C 21/18 (2006.01)

Patent

CA 2094892

Process for the preparation of hexafluorobutane, and intermediates thereby obtainable Abstract of the Disclosure 1,1,1,4,4,4-Hexafluorobutane is prepared by first reacting 1,1,3,4,4-pentachlorobuta-1,3-diene with hydrogen fluoride in the presence of catalysts at 60 to 180°C to give 1,1,1,4,4,4-hexafluoro-2-chlorobutane, and converting this to 1,1,1,4,4,4-hexafluorobutane. On working up the product of the first stage of the process, it is possible to isolate novel compounds of formula (I): CF2X-CH2-R (I) in which X is fluorine or chlorine and R is -CHCl-CF2Cl, -CHCl-CFCl2 or -CCl=CCl2. Le A29 068

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