1-Naphthyl 9H-carbazole-4-sulfonate

In the title compound, C22H15NO3S, the plane of the carbazole ring system forms a dihedral angle of 65.06 (4)° with the naphthalene ring system. In the crystal structure, a weak intra­molecular C—H⋯O inter­action is observed between the naphthalene ring system and the sulfonate group. Two weak inter­molecular C—H⋯O inter­actions are also observed

Synthesis of 3-{4-[4-(Benzylideneamino)benzenesulfonyl]- phenyl}-2-phenylquinazolin-4(3H)-one

The present work describes the synthesis of a Schiff base, 3-{4-[4-(benzylideneamino) benzenesulfonyl]phenyl}-2-phenylquinazolin-4(3H)-one from a novel quinazolinone, 3-[4-(4 aminobenzenesulfonyl)phenyl]-2-phenylquinazolin-4(3H)-one. The quinazolinone was prepared by reacting 2-phenyl-4H-3,1 benzoxazin-4-one with dapsone. The structure of the synthesized Schiff base is confirmed by IR, 1H NMR, 13C NMR, MS and elemental analysis.