Schiff-base complex of copper (II) fabricated on magnetic nanoparticles as practical and recyclable catalyst in organic reactions

Schiff- bases are widely studied because of increasing recognition of their role in catalytic systems. On other hand, magnetic nanoparticles (MNPs) can be used as heterogeneous support in catalytic reactions due to their unique features such as easy and clean separation of catalysts. In this work, Fe3O4 MNPs was prepared via a chemical co-precipitation technique using Fe3+ and Fe2+ in aqueous ammonia solution. Then, the surface of MNPs was modified by 3-choloropropyltrimtoxysilane and further new Schiff-base was anchored on its surface. Finally, Schiff-base complex of copper (II) was stabilized on modified MNPs. Structure of this catalyst was characterized using FT-IR, VSM, SEM, EDS, WDX, XRD, TGA, and AAS techniques. The catalytic activity of this catalyst was described in the carbon-carbon coupling reaction and synthesis of nitrile derivatives. All the products were obtained in excellent yields and high TOF values which indicate the high efficiency of this catalyst. This catalyst was reused for several times without significant loss of its catalytic activity.

کلیدواژه ها:

Copper(II) ، Magnetic nanoparticles ، Suzuki reaction ، biphenyl ، Schiff‑base