An efficient and ecofriendly synthesis of highly functionalized pyridones <i>via</i> a one-pot three-component reaction
作者:Hajar Hosseini、Mohammad Bayat
DOI:10.1039/c8ra05690k
日期:——
A simple and convenient protocol has been developed for the synthesis of N-amino-3-cyano-2-pyridone derivatives by a one-pot reaction of cyanoacetohydrazide, activated nitrile substrates (malononitrile, ethyl cyanoacetate, cyanoacetamide) and aromatic aldehydes in the presence of piperidine in water or a mixture of water and ethanol. The sequence of cascade reactions includes Knoevenagel condensation
A three component one-pot synthesis of N-amino-2-pyridone derivatives catalyzed by KF-Al<sub>2</sub>O<sub>3</sub>
作者:B. Kshiar、O. R. Shangpliang、B. Myrboh
DOI:10.1080/00397911.2018.1468467
日期:2018.7.18
Abstract Synthesis of 1,6-diamino-4-phenyl-3,5-dicyano-2-pyridone derivatives via a one-pot, three-component reaction of aryl aldehydes, malononitrile, and cyanoacetic hydrazide at room temperature using KF-Al2O3 as a recyclable catalyst have been developed. The reaction proceeds through the initial Knoevenagel condensation between aldehyde and malononitrile in the presence of KF-Al2O3 to form the