REGIOSELECTIVE SYNTHESIS OF 2-SUBSTITUTED 3-NITROPYRIDINES BY ONE-POT REACTION OF EITHER 4- OR 6-SUBSTITUTED 1-METHYL-3,5-DINITRO-2-PYRIDONES WITH KETONES AND AMMONIA

Article abstract of DOI:10.3987/COM-91-5832

Regioselective synthesis of 2-substituted 3-nitropyridines was achieved by one-pot reaction of either 4- or 6-substituted 1-methyl-3,5-dinitro-2-pyridones with ketones in the presence of ammonia.The selectivity is interpreted in terms of steric factor of substituent on the pyridone.