Multicomponent Tandem Cyclization/Aromatization Reaction: Access to 2‐Substituted Naphthothiazoles and Benzothiazoles

Abstract

A straightforward, metal‐free multicomponent tandem cyclization/aromatization approach for the synthesis of naphthothiazoles and benzothiazoles has been described. This method employs α‐tetralone and cyclohexenones as the starting materials, styrene derivatives as a one‐carbon synthon, ammonium salt as the N source, elemental sulfur as the S source, and an oxidant. This approach offers a broad substrate scope, including α‐tetralone and cyclohexenones adorned with different functional groups, resulting in moderate to high yields of the desired products.