Synthesis of Some New 2(1<i>H</i>)-Pyridones from 3-Amino-3-(dialkylamino)propenenitriles
作者:Maria Teresa Cocco、Cenzo Congiu、Antonio Maccioni、Valentina Onnis
DOI:10.1055/s-1992-26113
日期:——
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.
3-氨基-3-(二烷基氨基)丙烯腈与乙炔羧酸酯反应,得到2(1H)-吡啶酮衍生物。与乙炔丙酸乙酯反应,得到二烯氨基酯中间体,在乙醇钠/乙醇中环化为5-氰基-2(1H)-吡啶酮。与乙炔二羧酸二乙酯反应,直接得到2(1H)-吡啶酮衍生物。