bifeo3 magnetic nanoparticles: a novel, efficient and reusable magnetic catalyst for the synthesis of polyhydroquinoline derivatives

Herein, it has been shown that the bismuth ferrite magnetic nanoparticles (bfo-mnps) are new, efficient and recyclable catalysts for the synthesis of polyhydroquinoline derivatives by the hantzsch reaction. the one-pot four-component cyclocondensation reaction of dimedone, aromatic aldehydes, ethyl acetoacetate and ammonium acetate was carried out under solvent-free conditions. the desired products were obtained in very short reaction times with high yields. the magnetic nanocatalyst was characterized by the x-ray diffraction (xrd) and ft-ir analysis. for the first time, the bismuth ferrite magnetic nanoparticles were used as a catalyst in the hantzsch reaction. the catalyst was found to be reusable, which showed considerable catalytic activity after the third run.