Processes for producing branched fluoroalkyl olefins
US9790150B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Jul 30, 2015 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Jul 30, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C19/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes for producing branched fluoroalkyl olefins are disclosed. In addition, novel halo-fluoroalkane intermediates are disclosed that may be used in the branched fluoroalkyl olefin production processes. Non-limiting examples of branched fluoroalkyl olefins include branched fluorobutenes, such as 1,3,4,4,4-pentafluoro-3-trifluoromethyl) but-1-ene (HFO-1438ezy). In some aspects, there is disclosed a method for dehydrobrominating 4-bromo-1,1,1,2,4-pentafluoro-2-(trifluoromethyl)butane to produce 1,3,4,4,4-pentafluoro-3-(trifluoromethyl)but-1-ene (HFO-1438ezy).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.