The carbonitrile compound, 2-amino-5-oxo-4-propyl-4,5-dihydropyrano3,2-cchromene-3-carbonitrile was synthesized, in 83 yield, by one-pot multicomponent reaction of butyraldehyde, malononitrile and 4-hydroxycoumarin using 10 mol urea as an organo-catalyst at room temperature, and its crystal structure was determined by X-ray diffraction technique. The crystals are triclinic, a = 7.7379(5), b = 8.7520(6), c = 11.6589(5) , alpha = 96.668(4)A degrees, beta = 100.033(4)A degrees, gamma = 112.547(6)A degrees, Z = 2, sp. gr. P. Both pyran rings in the molecule adopt a boat conformation. The crystal structure is stabilized by N-H center dot center dot center dot O and N-H center dot center dot center dot N hydrogen bonds.
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