Direct fluorination of fluoro-beta-sultones in order to produce the corresponding fluorooxy-fluorosulfonyl-fluoro-compounds
US4962282A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1990 |
| Grant date | Oct 9, 1990 |
| Priority date | — |
| Expiry date | Feb 13, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Preparation of fluorooxy-fluorosulfonyl-fluorocompounds by means of the direct fluorination with elemental fluorine of various .beta.-sultones according to the following reaction scheme: ##STR1## wherein R.sub.1 and R.sub.2, which can be either equal to, or different from, each other, represent a fluorine or chlorine atom, or an alkyl radical partially or totally halogenated with fluorine and/or chlorine. The reaction takes place in continuous in the presence of a fluorination catalyst, preferably constituted by an alkali-metal fluoride preferably supported on a metal material, at temperatures comprised within the range of from -30.degree. C. to +100.degree. C., and under the pressure comprised within the range of from 50 to 800 kPa; said catalyst is a fixed-bed catalyst, or is suspended in a reaction medium inert under the operating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.