Both independent mol-ecules in the asymmetric unit of the tautomeric title compound, C(14)H(13)NO(3), a synthetic product obtained from 2-lithio-methyl-quinoline and diethyl oxalate, crystallize in the enaminone form with a Z configuration around the double bond. Intra-molecular N-H⋯O hydrogen bonds occur, generating an S(6) graph-set motif. In the crystal, weak inter-molecular C-H⋯O and π-π stacking inter-actions [centroid-centroid distances = 3.7020 (14)-3.7429 (13)Å] define a three-dimensional supra-molecular network.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3007001 | PMC |
| http://dx.doi.org/10.1107/S160053681002324X | DOI Listing |
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