Process for the preparation of derivatives of fluoroalkane-carboxylic and perfluoroalkane-sulfinic acids
US4221734A · kind A · utility
10Cited by
1References
9Claims
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Key dates
| Filing date | Dec 12, 1977 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Dec 12, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C309/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for the preparation of derivatives of perfluoroalkanecarboxylic acids and perfluoroalkanesulphinic acids by reacting a perfluoroalkylhalide having the general formula R.sub.F X, in which X represents an atom of chlorine, bromine, or iodine, and R.sub.F represents an unbranched or branched perfluorinated chain containing from 2 to 12 carbon atoms; with CO.sub.2 or SO.sub.2 in a solvent medium and in the presence of activated or unactivated zinc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.