NN-diacyl arylsulphenamides as an unambiguous and convenient source of arylsulphenium ions
Abstract
Singlet p-nitrophenylsulphenium ions can be generated conveniently from the readily available NN-diacetyl-p-nitrophenylsulphenamide and trifluoroacetic acid, as confirmed by kinetic studies; it adds stereo-specifically to olefins and substitutes into anisole quantitatively.