Fabrication of Core−Shell-Structured Organic−Inorganic HybridNanocatalyst for the Synthesis of polyhydroquinolines

Modern state of the art of catalysis science and research reveals that the introduction of novelnanotechnologies has enabled the generation of solid-supported heterogeneous nanoscalecatalysts, which are effective tools for controlling chemical reactivity as well as conferring thesynergistic benefits of facile recovery [۱]. By collectively integrating the key advantages ofhomogeneous as well as heterogeneous catalysts, they offer great prospects of meeting thesustainability criteria consistent with the goals of green chemistry [۲-۳]. Mgnetic nanoparticlesplay the role of a bridge between heterogeneous and homogeneous catalysts and have emerged aspromising catalysts due to their low-cost, efficient and reusable properties [۴]. A magneticallyrecoverable heterogeneous Fe۳O۴@SiO۲@BHA-Cu(II) nanocomposite was prepared byimmobilizing a novel Cu(II) complex on the nanoparticles. The catalyst was characterized by FTIR,TGA, VSM, FESEM, XRD, ICP and EDX techniques. The catalytic activity of thisnanocatalyst in the synthesis of polyhydroquinoline derivatives were investigated.

Keywords:

Magnetic Nanoparticles , Polyhydroquinoline , Immobilized Copper Complex , Recoverable Nanocatalyst.