4-hydroxy-2-quinolones 172*. Synthesis and structure of 4,3'-spiro[(6-allyl-2-amino- 5-oxo-5,6-dihydro-4h-pyrano- [3,2-<Emphasis Type="Italic">c</Emphasis>]quinoline-3-carbo- nitrile)-2'-oxindole] |
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| Authors: | I V Ukrainets R G Red’kin L V Sidorenko A V Turov |
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| Institution: | 1.National University of Pharmacy,Kharkiv,Ukraine;2.Taras Shevchenko National University,Kiev,Ukraine |
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| Abstract: | A three-component condensation of 1-allyl-4-hydroxy-2-oxo-1,2-dihydroquinoline, isatin, and malononitrile gave a satisfactory
yield of 4,3'-spiro(6-allyl-2-amino-5-oxo-5,6-dihydro-4H-pyrano-3,2-c]quinoline-3-carbonitrile)-2'-oxindole], which structure
was confirmed by X-ray analysis. |
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