Functionalization of Substituted 2(1H)- and 4(1H)-Pyridones. 4. Synthesis of Substituted 6-(Aminocarbonyl)-1,2-dihydro-2-oxo- and 6-(Aminocarbonyl)-1,4-dihydro-4-oxo-3-pyridinecarboxylic Acids

Article abstract of DOI:10.1021/jo00175a026

The synthesis of various substituted 6-(aminocarbonyl)-1,2-dihydro-2-oxo-3-pyridinecarboxylic acids from the 5-ethyl and 5-tert-butyl 1,6-dihydro-6-oxo-2,5-pyridinedicarboxylates is described.These esters were prepared by ozonolysis and oxidative workup o