Nucleophilic Displacement of N-Aryl and Heteroaryl Groups. Part 5. Conversion of 2-Aminopyridines into 2-Pyridones
2-Ethoxycarbonyl-1-(2-pyridyl)pyridinium cations (3) (easily prepared from 2-aminopyridine and the appropriate pyrylium salt) are converted by dilute NaOH at 25 deg C into 1-(substituted 2-pyridylcarbonyl)-2-pyridones (7).Compounds (7) are readily hydrolysed to 2-pyridones.
Katritzky, Alan R.,Awartani, Radi
p. 2623 - 2627
(2007/10/02)
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