Patent ID: 6399820
Filing Date: 2002-06-04
Classification: C07B,C07C

Abstract:
A reagent for carrying out a sulphonylation process for the preparation of a sulphonated product comprising the steps of:1) reacting a nitrogen nucleophile with a reagent, said reagent comprising: a sulphonyl halide having an organic part and whose halogen atom has an atomic number at least equal to that of chlorine, an organic base comprising a trivalent atom from column V whose lone pair is conjugated, directly or indirectly, to a bond linking two atoms, at least one of which is an atom from column V, and the organic part of said sulphonyl being perhalogenated on the carbon borne by the sulphur; and 2) recovering the sulphonated product thus formed; said reagent comprising: a sulphonyl halide having an organic part and whose halogen atom has an atomic number at least equal to that of chlorine the organic part of said sulphonyl being perfluorinated, on the carbon borne by the sulphur, and an organic base comprising a trivalent atom from column V whose lone pair is conjugated directly or indirectly to a &pgr; bond linking two atoms, at least one of which is an atom from column V.