Synthesis of 3‑Substituted Aryl[4,5]isothiazoles through an All-Heteroatom Wittig-Equivalent Process

Extending the previous use of <i>tert</i>-butyl sulfoxide as the sulfinyl source, intramolecular sulfinylation of sulfonamides was successfully performed. The resulting sulfinimides were not isolated and instead were believed to go through an all-heteroatom Wittig-equivalent process to eventually afford aryl­[4,5]­isothiazoles in high yields