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Ethyl 2-amino-4-(4-methoxy­phenyl)-7-methyl-5-oxo­pyrano­[3,2-c]­pyran-3-carboxyl­ate

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The title compound, C19H19NO6, was synthesized by the reaction of 4-hydroxy-6-methyl­pyran-2-one and ethyl 4′-methoxy-2-cyano­cinnamate in the presence of triethyl­benzyl­ammonium chloride in an aqueous medium. The pyran­one ring is almost planar, while the fused pyran ring adopts a flattened boat conformation. The amino group is involved in both intra- and intermolecular N—H…O hydrogen bonds.
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Document Type: Research Article

Publication date: December 1, 2004

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