1,2,3-Benzothiadiazoles. Part V. The rearrangement of diazonium salts derived from 7-aminobenzisothiazoles

Abstract

The rearrangement of benzisothiazole-7-diazonium salts to 7-acylbenzothiadiazoles is favoured over the standard reactions involving elimination of nitrogen by the presence of certain metal salts; the extent of these two competing reactions is governed by the oxidation potential of the metal.