2,1‐Benzisothiazoline 2,2‐dioxide and derivatives

Abstract Synthesis of new 2,1‐benzisothiazoline 2,2‐dioxides 1 and some of its benzene ring substitution derivatives was accomplished by two different methods of cyclisation. Also a number of new N ‐substituted derivatives, obtained by treatment of 1 and analogues with aliphatic and aromatic acid chlorides are described.