Abstract
4-Hydroxy-2-quinolones1 are generally found to be converted to the 4-azidocompounds3 via the 4-chloroquinolones2, the 4-tosyloxyquinolones6, or the 4-aminoquinolones4, respectively. Choice of the reaction conditions and yields depend on the substituent in position 3 of the quinoline nucleus. For comparison the O-analogous coumarin derivatives9 have been studied to give the 4-azidoderivatives11 via the 4-chlorocoumarins10.
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Stadlbauer, W. Methoden zur Darstellung von 4-Azido-2(1H)-chinolonen. Monatsh Chem 117, 1305–1323 (1986). https://doi.org/10.1007/BF00810876
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DOI: https://doi.org/10.1007/BF00810876