عبدالکریم زارع

A newly designed magnetic nanocomposite, based on Fe3O4@SiO2 bonded to an organic component bearing CoCl3−, was constructed and comprehensively characterized via elemental mapping, EDS, FT-IR, TG, FE-SEM, and XRD techniques. Subsequently, catalytic performance of the magnetic nanocomposite was examined for the construction of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ols) through the condensation of 1 equiv. of aryl aldehydes with 2 equiv. of 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one; it successfully catalyzed the reaction, with several advantages including elimination of solvents during synthesis, short reaction times (20-30 min) combined with high yields (87-96%), facile purification process, a wide applicability across diverse substrates, and robust catalyst recyclability demonstrated by sustained catalytic performance over three times reuses, along with good ecocompatibility.