Application of Thio-Ugi Adducts for the Preparation of Benzo[<i>b</i>]thiophene and S‑Heterocycle Library via Copper Catalyzed Intramolecular C–S Bond Formation

Abstract

Fused heterocycles, such as benzo­[<i>b</i>]­thiophene, thiochroman, benzo­[<i>b</i>]­[1,4]­thiazine, and 1,4-benzothiazepine were generated from thio-Ugi adducts containing a thioamide group through copper-catalyzed intramolecular C–S bond formation under microwave irradiation

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