Patent ID: 8304580
Filing Date: 2012-11-06
Classification: C07C,C07F

Abstract:
1. A method for producing a tris(perfluoroalkanesulfonyl)methide acid salt represented by formula [1] wherein Rf represents a C 1-9 straight-chain or branched-chain perfluoroalkyl group, n represents an integer that is identical with valence of the corresponding cation, and M is a cation representing an alkali metal, quaternary ammonium represented by (R (a) reacting a methylmagnesium halide represented by formula [2] wherein X represents a chlorine, bromine or iodine, with a perfluoroalkanesulfonyl fluoride represented by formula [3] wherein Rf represents a C wherein Rf and X are defined as above; and (b) directly reacting the tris(perfluoroalkanesulfonyl)methide acid magnesium halide from step (a) with at least one salt selected from the group consisting of alkali metal halides, quaternary ammonium salts, and quaternary phosphonium salts, by directly adding the at least one salt to the obtained reaction mixture from step (a), wherein the quaternary ammonium salts of step (b) are represented by the formula of (R wherein the quaternary phosphonium salts of step (b) are represented by the formula of (R