New complex supported on magnetic nanoparticles: as efficient and reusable nanocatalyst for synthesis of sulfide derivatives

In recent years, supported catalysts on the nanoparticles have attracted much attention in organic reactions. The main drawback of these catalysts is their separation; because nanoparticles have diameters of less than 100 nm, which cannot be separated by conventional methods such as filtration techniques [1]. This draw back can be overcome using magnetic nanoparticles (MNPs), which can be easy recovered from the reaction mixture by external magnet. Furthermore, magnetic separation of the MNPs is more effective and easier than filtration or centrifugation [2]. MNPs are readily available and high-surface-area resulting in high catalysts loading capacity and outstanding stability. The functionalized of MNPs are a kind of novel functional materials, which have been widely used in biotechnology and catalysis studies [3]. Existence of many hydroxyl groups on the MNPs surface leads to reaction with alkoxysilane reagents and formation of Si–O bonds which support terminal functional groups available for immobilization of other substances [4]. Herein, we reported a new complex of Ni that immobilized on Fe3O4 MNPs and further used as an excellent nano organometallic catalyst for the synthesis of sulfide derivatives, because sulfide derivatives have been reported to possess a wide range of pharmaceutical activities and biological properties and also sulfides are starting material in organic synthesis [5].