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Synthesis 1992; 1992(4): 371-373
DOI: 10.1055/s-1992-26113
short paper
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Synthesis of Some New 2(1H)-Pyridones from 3-Amino-3-(dialkylamino)propenenitriles

Maria Teresa Cocco* , Cenzo Congiu, Antonio Maccioni, Valentina Onnis
  • *Dipartimento Farmaco Chimico Tecnologico Via Ospedale 72, I-09124 Cagliari, Italy
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Publikationsdatum:
17. September 2002 (online)

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3-Amino-3-(dialkylamino)propenenitriles were reacted with acetylenecarboxylates to give 2(1H)-pyridone derivatives. The reaction with ethyl propynate afforded dienamino ester intermediates which cyclized in sodium ethoxide/ethanol to 5-cyano-2(1H)-pyridone. The reaction with diethyl acetylenedicarboxylate gave directly the 2(1H)-pyridone derivatives.