Patent ID: 6297398
Filing Date: 2001-10-02
Classification: C07C

Abstract:
A process for the preparation of perfluorosulphonamides or perfluorosulphonimides, comprising the steps of:1) carrying out a perfluorosulphonylation reaction by contacting a nucleophile, whose nucleophilic atom is a nitrogen atom, with a reactant comprising a sulphonyl heavy halide having an organic part, and an organic base which simultaneously cannot be alkylated and is liposoluble, said base being selected from the group consisting of a hindered dialkylphosphine, trialkylphosphine, phosphonium hydroxide, hindered dialkylamine, trialkylamine or ammonium hydroxide, the organic part of said sulphonyl heavy halide is perfluorinated on the carbon carried by the sulphur; and2) recovering the perfluorosulphonamides or perfluorosulphonimides thus formed.