Process for preparing fluorocarboxylic acid halides
US5616794A · kind A · utility
3Cited by
13References
16Claims
0Family size
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Key dates
| Filing date | Nov 17, 1995 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Nov 17, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/58
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing fluorocarboxylic acid halides comprises the steps of (a) forming a starting composition comprising (i) at least one fluorosulfonic acid halide comprising at least one halosulfonyldifluoromethyl group (--Cf.sub.2 SO.sub.2 X, wherein X is halogen); and (ii) at least one Group III or Group V Lewis acid; and (b) allowing the fluorosulfonic acid halide and the Lewis acid to react to form a product composition comprising at least one fluorocarboxylic acid halide. The process enables the preparation of even higher molecular weight fluorocarboxylic acid halides in good yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.