4-Hydroxy-2-quinolinones 128. Bromination of N-allyl-4-hydroxy-2-oxo-1,2-dihydroquinolines and pyridines unsubstituted in position 3 |
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| Authors: | I. V. Ukrainets N. L. Bereznyakova A. V. Turov S. V. Slobodzian |
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| Affiliation: | (1) National University of Pharmacy, Kharkiv, 61002, Ukraine;(2) Taras Shevchenko National University, Kiev, 01033, Ukraine;(3) Ohio Northern University, Ada, Ohio 45810, USA |
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| Abstract: | Bromination of N-allyl-4-hydroxy-2-oxo-1,2-dihydroquinoline and N-allyl-5-ethoxycarbonyl-4-hydroxy-6-methyl-2-oxo-1,2-dihydropyridine is accompanied not only by closing of a five membered oxazole ring but also by a second bromination of the 2-bromomethyl-5-oxo-1,2-dihydro-5H-oxazolo[3,2-a]-derivatives formed at position 4. __________ Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1365–1373, September, 2007. |
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| Keywords: | oxazolo[3,2-a]pyridines oxazolo[3,2-a]quinolines bromination heterocyclization X-ray structural analysis |
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