Process for preparing 1,1,1,4,4,4-hexafluoro-2-butene and 1,1,1,4,4,4-hexafluorobutane
US5516951A · kind A · utility
14Cited by
4References
5Claims
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Assignee
Inventor
Key dates
| Filing date | May 19, 1995 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | May 19, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/354
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,1,1,4,4,4-Hexafluoro-2-butene is prepared by reacting 1,1,1-trifluoro-2,2-dichloroethane with copper and an amine, and then 1,1,1,4,4,4-hexafluorobutane is prepared by reacting 1,1,1,4,4,4-hexafluoro-2-butene with hydrogen. 1,1,1,4,4,4-Hexafluorobutane, which is used as a coolant, a blowing agent or a cleaner and can reserves the environment, is easily obtained, and 1,1,1,4,4,4-hexafluoro-2-butene, which is useful as an intermediate for the 1,1,1,4,4,4-hexafluorobutane, or as a monomer of fluorine-containing polymers is easily prepared in a good yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.