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In this study, the surface of magnetic nano-Fe 3 O 4  NPs was functionalized with melamine-imidazole groups to synthesize a novel heterogeneous support (Fe 3 O 4 @SiO 2 @Si(CH 2 ) 3 NH@CC@Im). Then, cobalt (II) acetate was added to the prepared support and, finally we used Fe 3 O 4 @SiO 2 @Si(CH 2 ) 3 NH@CC@Im@Co in order to construct 2-amino-3-cyanopyridines from the reaction of aldehydes, acetophenones, malononitrile and ammonium acetate. Synthesis of 2-amino-3-cyanopyridines was achieved in one pot operation by utilizing a simple set of readily available starting materials in excellent product yields with short reaction time. Furthermore, the prepared green heterogeneous catalyst can be recycled and recovered six times.

polycyclic aromatic compounds

Preparation and Characterization of Co (II) Supported on Modified Magnetic Fe 3 O 4  Nanoparticles and Its Application as Catalyst for the Synthesis of 2-Amino-3-Cyanopyridines