Acta Cryst. (2009). E65, o974  [ doi:10.1107/S1600536809011970 ]

2-(3-Oxo-1,3-dihydroisobenzofuran-1-yl)phthalazin-1(2H)-one

Y.-L. Zhang, Y.-J. Wu, G. Peng and H. Deng

Abstract: The reaction of 2-carboxybenzaldehyde and hydrazine hydrate unexpectedly yielded the title compound, C₁₆H₁₀N₂O₃, which comprises one phthalide ring, one phthalazine system and a chiral centre. The phthalide unit is almost perpendicular to the phthalazine system, forming a dihedral angle of 87.1 (3)°. The packing is governed by weak C-HO hydrogen-bonding interactions, forming layers parallel to the ab plane.

Online 8 April 2009

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