sulfonic acid-decorated magnetic nanostructure: an efficient hybrid catalyst for green synthesis of 1-amidoalkyl-2-naphtholes

The remarkable stability of magnetic core and -oh functional groups on the surface of silica-coated magnetite (fe3o4@sio2) nanoparticles make them an excellent candidate for functionalization and catalytic applications. in this study, a surface-modified solid support was fabricated by immobilizing sulfonic acid groups on magnetic nanoparticles (fe3o4@sio2@ae-so3h). the structure of prepared hybrid nanostructure was characterized by various analyses, including fourier-transform infrared spectroscopy (ft-ir), x-ray powder diffraction (xrd), thermogravimetric analysis (tga/dtg), vibrating sample magnetometr (vsm), the field emission scanning electron microscopy (fe-sem), and the electron-dispersive x-ray spectroscopy (eds). the catalytic activity of prepared hybrid nanomaterial was assessed in the synthesis of 1-amidoalkyl-2-naphthols, resulting in high yields of the desired products under environmentally friendly conditions. high yields, short reaction times, green solvent and conditions, easy workup procedure, reusability without a significant diminish in catalytic efficiency and simple separation of nanocatalyst by using an external magnet alongside the environmental compatibility and sustainability are some advantages of this method.