Process for producing fluorinated sulfonyl fluoride
US7781612B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2005 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Jun 23, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for producing a fluorinated sulfonyl fluoride useful as e.g. a material for an ion exchange resin, and a novel chemical substance useful as an intermediate in the production process.That is, to provide a process comprising oxidizing Y—S—RA-E-RB by means of an oxidizing agent essentially containing a halogen atom to obtain XSO2—RA-E-RB, and in a case that X is a fluorine atom, reacting the compound with fluorine in a liquid phase as it is, and in a case that X is a halogen atom other than a fluorine atom, converting X into a fluorine atom, and then reacting the obtained compound with fluorine in a liquid phase to obtain FSO2—RAF-EF-RBF, and then decomposing it to obtain FSO2—RAF—COF (wherein RA is a bivalent organic group such as an alkylene group, RB is a monovalent organic group such as a perfluoroalkyl group, E is —CH2OCO—, Y is a monovalent organic group such as a cyano group or the like, X is a halogen atom, RAF is a bivalent organic group having RA fluorinated or the like, RBF is the same group as RB or the like, and EF is —CF2OCO—).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.