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http://hdl.handle.net/20.500.12358/26295
Title | Synthesis of Some Ethyl 3-(Aryldiazenyl)-7-oxo-dihydropyrido [2, 3-f] quinoxaline-8-carboxylates |
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Untitled | |
Abstract |
Ethyl 7, 8-diamino-1-cyclopropyl-6-fluoro-4-oxo-1, 4-dihydroquinoline-3-carboxylate (6) and its free acid 7 are prepared by chemical reduction of the respective 7-azido-8-nitroquinoline 5. Consecutive nucleophilic addition and cyclocondensation reactions of 6 with α-acetyl-N-arylhydrazonoyl chlorides 8a–c in ethanol and triethylamine are site-selective and yield the corresponding 3-(aryldiazinyl)-2-methylpyrido [2, 3-f] quinoxalines 10a–c. Analytical and spectral (IR, MS, NMR) data of 6, 7, and 10a–c are in conformity with the assigned structures. |
Type | Journal Article |
Date | 2007 |
Published in | Zeitschrift für Naturforschung B |
Series | Volume: 62, Number: 8 |
Publisher | Verlag der Zeitschrift für Naturforschung |
Citation | |
Item link | Item Link |
License | ![]() |
Collections | |
Files in this item | ||
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Synthesis_of_Some_Ethyl_3-Aryldiazenyl-7-oxo-dihyd.pdf | 219.8Kb |