The graphene oxide-catalyzed coupling and cyclization reactions of primary amines with elemental sulfur was developed to afford various optically property benzothiazoles. This coupling and cyclization strategies proceeded under the oxidant system graphene oxide/O2 and constructed carbon-heteroatom (N, S) bonds with amines and elemental sulfur. Due to benzothiazoles as common chromophores, these products
multicomponent tandem cyclization and aromatization approach is introduced for the synthesis of naphthothiazoles and benzothiazoles from α-tetralones and cyclohexenones, respectively. Styrene derivatives were employed to generate one-carbon synthons through C=C bond cleavage, while an ammonium salt served as the nitrogen source and elementalsulfur served both as the sulfur source and oxidant.