Acta Cryst. (2004). E60, o1995-o1997  [ doi:10.1107/S1600536804025127 ]

2-Amino-3-cyano-4-(2,4-dichlorophenyl)-8-methylpyrano[3,2-c]pyran-5(4H)-one ethanol solvate

D. Shi, L. Niu, X. Wang, Q. Zhuang and Y. Zhang

Abstract: The title compound, C₁₆H₁₀Cl₂N₂O₃·C₂H₆O, was synthesized by the reaction of 4-hydroxy-6-methylpyran-2-one, 2,4-dichlorobenzaldehyde and malononitrile in the presence of triethylbenzylammonium chloride in an aqueous medium. X-ray analysis reveals that the pyranone ring is almost planar, while the pyran ring adopts a flattened boat conformation.

Online 16 October 2004

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