I2-Promoted Alkylsulfenylation/Cyclization of Enaminones with S-Alkyl Bunte Salts: Synthesis of 3-Alkylsulfenylated Chromones

Abstract

A novel protocol for effective and efficient synthesis of 3-alkylsulfenylated chromones in moderate to good yields via I₂-promoted alkylsulfenylation/cyclization of enaminones with S-alkyl Bunte salts has been described. This reaction features a broad substrate scope, good functional group tolerance, and metal- and oxidant-free conditions.