ZrP۲O۷ NPs: A recyclable, efficient heterogeneous catalyst for the synthesis of ۱,۶-diamino-۲-oxo-۴-phenyl-۱,۲-dihydropyridine-۳,۵-dicarbonitrile derivatives via a multi-component reaction

چکیده مقاله

ZrP2O7 nanoparticles (NPs) as an efficient catalyst have been used for the preparation of 1,6-diamino-2- oxo-4-phenyl-1,2- dihydropyridine-3,5-dicarbonitrile derivatives via one-pot coupling of hydrazine hydrate, ethyl cyanoacetate, malononitrile and aromatic aldehydes under reflux conditions in ethanol. Using this method we obtained low reaction times, easy isolation of the targeted molecules, excellent yields.