Abstract
Thermal decarbonylation of methyl 1-aryl-3-(het)aroyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates afforded 8-substituted methyl 3-(het)aroyl-4-oxo-1,4-dihydroquinoline-2-carboxylates. X-ray diffraction studies revealed no hydrogen bonds in the crystals of the compounds obtained. According to spectral data, hydrogen bonding is possible in concentrated solutions of 8-substituted methyl 4-oxo-1,4-dihydroquinoline-2-carboxylates.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 0731–0738, March, 2014.
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Boteva, A.A., Krasnykh, O.P., Fefilova, I.V. et al. Methyl 3-aroyl-4-oxo-1,4-dihydroquinoline-2-carboxylates: synthesis and molecular and crystal structures. Russ Chem Bull 63, 731–738 (2014). https://doi.org/10.1007/s11172-014-0499-5
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DOI: https://doi.org/10.1007/s11172-014-0499-5