Polyethylene glycol stabilized on Fe3O4 nanoparticles as a magnetic nanocatalyst in the Hantzsch synthesis
Subject Areas :Razieh Farsi 1 , Ali reza Kiasat 2
1 - Department of Chemistry, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran
2 - Department of Chemistry, College of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
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Abstract :
In the present project, Fe3O4 nanoparticles were prepared from the co-precipitation reaction of Feц , Feш in ammonia medium. The obtained nanoparticles were used as a substrate to stabilize polyethylene glycol. To stabilize PEG on Fe3O4 surface, Fe3O4 hydroxy groups and PEG hydroxy group reacted in the presence of HCL. The resulting nanocomposite was structured by FT-IR spectroscopy and its morphology was examined by SEM. Nanocomposite was used as an effective catalyst for four-component compaction between ammonium acetate, ethyl acetate, dimidone and aromatic aldehyde under solvent-free conditions. Polyhydroquinoline products were prepared in low times and with high efficiencies.