Synthesis of Spiro[1,4-benzothiazine-2,2′-pyrroles] by Reaction of Pyrrolo[1,2-c][4,1]benzoxazepinetriones with 2-Aminobenzenethiol

Abstract

3-Aroylpyrrolo[1,2-c][4,1]benzoxazepine-1,2,4-triones reacted with 2-aminobenzenethiol to give 3′-aroyl-4′-hydroxy-1′-[2-(hydroxymethyl)phenyl]-2H,4H-spiro[1,4-benzothiazine-2,2′-pyrrole]- 2,5′(1′H)-diones.