Patent · US Active

Method for preparing a sulfonimide compound and salts thereof

US9394247B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

RHODIA OPERATIONS · FR

Inventors

Bernard Besson · Orsay, FR
Francois Metz · Irigny, FR
Olivier Buisine · Saint-Genis-Laval, FR

Key dates

Filing date	Jul 11, 2013
Grant date	Jul 19, 2016
Priority date	—
Expiry date	Jul 11, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C315/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a method for preparing an aqueous sulfonimide compound of the formula (Rf1—SO2)(Rf2—SO2)NH, wherein Rf1 and Rf2 are independently selected from the group comprising: a fluorine atom and groups having 1 to 10 carbon atoms selected from the perfluoroalkyl, fluoroalkyl, fluoroalkenyl and fluoroallyl groups, from a mixture M1 including (Rf1—SO2)(Rf2—SO2)NH, Rf1SO2H and/or Rf2SO2H, Rf1SO2NH2 and/or Rf2SO2NH2, characterized in that said method includes an oxidation step of said mixture M1 using an oxidizing agent in order to obtain a mixture M2 including (Rf1—SO2)(Rf2—SO2)NH, Rf1SO3H and/or Rf2SO3H and Rf1SO2NH2and/or Rf2SO2NH2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.