A comparative screening of the catalytic activity of nanocrystalline MIIZr4(PO4)6 ceramics in the one-pot synthesis of 1,6-diamino-4-aryl-2-oxo-1,2-dihydropyridine-3,5-dicarbonitrile derivatives
作者:Javad Safaei-Ghomi、Hossein Shahbazi-Alavi、Abolfazl Ziarati
DOI:10.1007/s11164-016-2608-6
日期:2017.1
A four-component reaction of hydrazine hydrate, ethyl cyanoacetate, malononitrile, and aromatic aldehydes was achieved in the presence of nanocrystalline MIIZr4(PO4)6 ceramics (MII: Mn, Fe, Co, Ni, Cu, Zn, Cd) as heterogeneous catalysts to produce N-amino-2-pyridones. The reactions were performed in the presence of different catalysts, and it is observed that CdZr4(PO4)6 nanocrystallines are the best catalysts among those examined. Atom economy, excellent yields in short times, high catalytic activity, recycling of catalyst, and environmental benignity are some of the important features of this protocol.
在纳米晶 MIIZr4(PO4)6 陶瓷(MII:Mn、Fe、Co、Ni、Cu、Zn、Cd)作为异相催化剂存在下,实现了水合肼、氰乙酸乙酯、丙二腈和芳香醛的四组分反应,生成了 N-氨基-2-吡啶酮。在不同催化剂存在下进行了反应,结果表明,CdZr4(PO4)6 纳米晶是所研究的催化剂中最好的催化剂。原子经济、短时间内产率高、催化活性高、催化剂可回收利用以及对环境无害是这一方案的一些重要特点。