Abstract
The magnetic nanoparticle (Fe3O4) and catalytic antimony trichloride (SbCl3) were co-immobilized in the graphitic carbon nitride nanosheets (SbCl3@Fe3O4/g-C3N4) using a straightforward solvent evaporation process. The designed catalysts showed excellent catalytic activity for the Groebke–Blackburn–Bienaymé multi-component reaction to prepare substituted imidazo[1,2-a]pyridines at room temperature. The convergent synthetic protocol enabled molecular diversity synthesis under appealingly mild conditions with a selective, time, and cost-effective operational simplicity. X-ray diffraction (XRD), infrared spectroscopies (FTIR), thermogravimetry (TG), scanning electron microscopy (SEM) indicate the structural integrity of all components. Combining environmentally benign reaction conditions and effortless composite recyclability offers magnetic carbon nitride economically viable for industrial processes.
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