Process for the preparation of C3-7 fluoroalkenes by base-mediated dehydrohalogenated C3-7 fluoroalkenes
US8410325B2 · kind B2 · utility
5Cited by
13References
25Claims
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Key dates
| Filing date | Dec 18, 2007 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Dec 18, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/63
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing a compound of formula CF3CF═CHX, CHX2CX═CX2 or a linear or branched C4-7 (hydro)fluoroalkene, wherein each X is, independently, H or F provided that in CHX2CX═CX2 at least one X is F, which process comprises dehydrohalogenating a compound of formula CF3CFYCH2X, CF3CFHCYHX, CHX2CXYCX2H, CHX2CXHCX2Y, or a linear or branched C4-7 hydro(halo)fluoroalkane, wherein each X is, independently, H or F provided that in CHX2CXYCX2H and CHX2CXHCX2Y at least one X is F, wherein Y is F, Cl, Br, or I, in the presence of a base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.