The title compound, C20H16N2O4S, was prepared by introduction of a 2-nitrobenzyl group to 2-(furan-2-yl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one via an alkaline-catalysed reaction. The thiazepine ring adopts a twist-boat conformation. The furan ring is oriented at dihedral angles of 56.75 (14) and 10.82 (14)° with respect to the two benzene rings, while the two benzene rings make a dihedral angle of 62.96 (10)°. Weak intermolecular C—H⋯O hydrogen bonds occur in the crystal structure
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