Production of organic fluorine compounds
US5777185A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1997 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Sep 9, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/21
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for hydrofluorinating an olefinic hydrocarbon of the formula EQU X --CX'.dbd.CX'--R' where X, X' and X" are the same or different and are hydrogen or halo and R' is hydrogen or C.sub.1 -C.sub.6 alkyl, with hydrogen fluoride. The process is carried out by admixing the olefinic hydrocarbon with hydrogen fluoride in an imidofluoride hydrogen fluoride solvent having the formula EQU R--(CF.dbd.NH.sub.2).sup.+ F.sup.- .multidot..eta.HF where R is C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkyl substituted with halo or C.sub.6 to C.sub.10 aryl either unsubstituted or substituted with alkyl and .eta. is 0 or an integer that is at least 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.