4-Hydroxy-2-quinolones 137. Synthesis,structure, and spectroscopic characteristics of diethyl 2,2′-dioxo-1,2,3,4,1′,2′,3′,4′-octahydro[4,4′]biquinolinyl-3,3′-dicarboxylate |
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Authors: | I V Ukrainets A A Tkach V V Kravtsova A V Turov |
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Institution: | (1) National University of Pharmacy, Kharkiv, 61002, Ukraine;(2) Taras Shevchenko National University, Kiev, 01033, Ukraine |
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Abstract: | Treatment of the ethyl esters of 1-R-4-chloro-2-oxo-1,2-dihydroquinoline-3-carboxylic acids with zinc dust in glacial acetic
acid gives high yields of diethyl 2,2′-dioxo-1,2,3,4,1′,2′,3′,4′-octahydro4,4′]biquinolinyl-3,3′-dicarboxylates. The structural
features of the synthesized compounds together with their NMR and mass spectra are discussed.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1799–1807, December, 2007. |
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Keywords: | 4-chloro-2-oxo-1 2-dihydroquinolines reductive dehalogenation X-ray analysis |
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