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
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
Efficient synthesis of new indenopyridotriazine [4.3.3]propellanes and spiroindenopyridotriazine-4<i>H</i>-pyran derivatives
作者:Monireh Rezaei、Mohammad Bayat
DOI:10.1039/d3ra06248a
日期:——
The pyrido[1,2,4]triazines as substrates, generated from 1,6-diaminopyridinone derivatives and ninhydrin, were reacted with malononitrile and CH-acids to afford a new library spiro[indeno[1,2-e]pyrido[1,2-b][1,2,4]triazine-7,5′-pyran]-1,3,6′-tricarbonitrile in ethanol at reflux condition in excellent yield. Also, novel indenopyridotriazine [4.3.3]propellanes were synthesized via the reaction of pyrido[1
由 1,6-二氨基吡啶酮衍生物和茚三酮生成的吡啶并[1,2,4]三嗪作为底物,与丙二腈和 CH-酸反应,得到新的文库螺[茚并[1,2-e]吡啶并[ 1 ] ,2- b ][1,2,4]三嗪-7,5'-吡喃]-1,3,6'-三甲腈在乙醇中在回流条件下以优异的收率获得。此外,通过在乙醇中使用HOAc ,吡啶并[1,2,4]三嗪与N-甲基-1-(甲硫基)-2-硝基乙烯胺(NMSM)反应合成了新型茚并吡啶并三嗪[4.3.3]丙烷。该方案的重要方面是起始原料丰富、条件温和、产品结构多样性、优异的产量以及无需色谱技术即可轻松分离产品。
7-Aryl-3-(hydroxymethyl)-5-oxo-1,2,3,5-tetrahydro[1,2,4]triazolo[1,5-a]pyridine-6,8-dicarbonitriles: Synthesis and Predicted Biological Activity
作者:A. A. Dolganov、A. G. Levchenko、P. G. Dahno、D. D. Guz’、A. R. Chikava、V. V. Dotsenko、N. A. Aksenov、I. V. Aksenova