Xiang-Shan Wang, Zhao‐sen Zeng, D. Shi
Dec 1, 2005
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Journal
Journal of Chemical Research
Abstract
The X-ray crystal structure of 2-amino-7-methyl-4-(3-nitrophenyl)-5-oxo-4H,5H-pyrano[4,3-b]pyrano-3- carbonitrile 1, is determined. It is interesting that all the atoms of the pyran ring are coplanar, which is different from that of other similar compounds. The structure is stabilised by intermolecular hydrogen bonds. The structure of the product is also characterised by IR, NMR spectra and elemental analysis.