Synthesis and characterization of sulfonated-phenylacetic acid coated Fe3O4 nanoparticles as a novel acid magnetic catalyst for Biginelli reaction

In this paper, we wish to report the synthesis and characterization of sulfonated-phenylacetic acid coated on Fe3O4 nanoparticles by a simple method. This catalyst was effectively employed as a novel acid magnetic catalyst for the one-pot synthesis of different 3,4-dihydropyrimidin-2(1H)-ones under mild and solvent-free conditions. This catalyst was easily prepared and showed excellent level of reusability. (C) 2013 Elsevier B.V. All rights reserved.