Silica-Supported Azo-linked Schiff Base Cu(II) Complex as efficient heterogeneous catalysts for Suzuki–Miyaura cross coupling reaction at low catalyst loadings in green media

In this paper, we wish to report the synthesis of silica-supported azo-linked Schiff base Cu(II) complex from the one pot reaction of arylazosalicylaldehyde with silica gel activated 3-aminopropyltriethoxysilane and copper acetate. The as synthesized material was completely characterized by Fourier transform infrared spectroscopy (FT-IR), Solid UV-Vis DRS, X-ray diffraction studies (XRD), scanning electron microscopy (SEM), EDX and N2 adsorption-desorption analysis (BET). Then the catalytic activity of the synthesized silica-supported azo-linked Schiff base Cu(II) complex was studied through efficient catalytic activity for Suzuki-Miyaura cross coupling reactions of various aryl halides with phenylbornic acid in green media.