A Practical Synthesis of N-Substituted 1,2-Benzisothiazolin-3-ones from N,N′-Disubstituted 2,2′-Dithiodibenzamides

A variety of N-substituted l,2-benzisothiazolin-3-ones were easily synthesized from N,N'-disubstituted 2,2'-dithiodibenzamides in the presence of O-methylhydroxylamine hydrochloride. Derivatives with a primary, secondary,or tertiary alkyl group or an aryl group on the N-1 nitrogen of the l,2-benzisothiazolin-3-one were obtained.