Abstract
Copper (II) complex immobilized on the surface of silica-coated magnetic nanoparticles functionalized with di(pyridin-2-yl)amine (Fe3O4@SiO2-di(pyridin-2-yl)amine-Cu(II)) was successfully fabricated and characterized by various analyses including FT-IR, SEM, TEM, EDX, TGA, XRD, VSM, AAS and ICP-OES techniques. The catalytic behavior of Fe3O4@SiO2-di(pyridin-2-yl)amine-Cu(II) nanocomposite was investigated in the synthesis of ynones and amides. Furthermore, the heterogeneous catalyst (Fe3O4@SiO2-di(pyridin-2-yl)amine-Cu(II)) can be easily recovered by external magnet and reused for 8 cycles without significant loss in activity. The results clearly exhibit the advantages of the present methodology, namely the low catalyst loading, high product yield, experimental simplicity, broad substrate scope and short reaction times.
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