Fabrication and characterization of Fe3O4@SiO2-Imine/Thio-Cu(II) nanomaterial as a novel and efficient magnetically reusable catalyst for the synthesis of N-aryl sulfonamides

In this paper, we synthesized Fe3O4@SiO2-Imine/Thio-Cu(II) nano- material and studied its catalytic activity in the synthesis of N-aryl sul- fonamides via the reaction of various aryl iodides and sulfonamides under eco-friendly conditions. The structure of the Fe3O4@SiO2- Imine/Thio-Cu(II) nanomaterial was characterized by FT-IR, SEM, TEM, EDX, XRD, VSM, AAS, and ICP-OES techniques. Recycling experiments revealed that the Fe3O4@SiO2-Imine/Thio-Cu(II) nanocatalyst could be easily recovered by a simple magnetic separation and recycled at least seven times without deterioration in catalytic activity. High reusability, simple recovery of catalyst, high yields, mild conditions, performance of reactions in water and simple operation are several significant advantages of this methodology.