Abstract
Perchloric acid adsorbed on magnetic Fe3O4 nano-particles coated with silica (Fe3O4@SiO2-HClO4) as a magnetically separable nano-catalyst was prepared and used for the preparation of 1,4-dihydropyridine derivatives via multi-component reaction of cinnamaldehyde, aromatic amines and methyl / ethyl acetoacetate in high yields. Quantitative conversion of the reactants was achieved under solvent-free conditions; recycle of the catalyst, through convenient magnetic decantation, shows non-significant loss in activity. The prepared nano-composite has been subjected for thorough characterization with X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FE-SEM) techniques. The average particle size of nano-particles was obtained as 70 nm.
Keywords: Fe3O4 nano-particles, Fe3O4@SiO2-HClO4, 1, 4-dihydropyridine, Hantzsch reaction, magnetically separable nano-catalyst, cinnamaldehyde.
Current Nanoscience
Title:Preparation of 1,4-dihydropyridine Derivatives Using Perchloric Acid Adsorbed on Magnetic Fe3O4 Nanoparticles Coated with Silica
Volume: 9 Issue: 2
Author(s): Mohammad Reza Mohammad Shafiee, Majid Ghashang and Abbas Fazlinia
Affiliation:
Keywords: Fe3O4 nano-particles, Fe3O4@SiO2-HClO4, 1, 4-dihydropyridine, Hantzsch reaction, magnetically separable nano-catalyst, cinnamaldehyde.
Abstract: Perchloric acid adsorbed on magnetic Fe3O4 nano-particles coated with silica (Fe3O4@SiO2-HClO4) as a magnetically separable nano-catalyst was prepared and used for the preparation of 1,4-dihydropyridine derivatives via multi-component reaction of cinnamaldehyde, aromatic amines and methyl / ethyl acetoacetate in high yields. Quantitative conversion of the reactants was achieved under solvent-free conditions; recycle of the catalyst, through convenient magnetic decantation, shows non-significant loss in activity. The prepared nano-composite has been subjected for thorough characterization with X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FE-SEM) techniques. The average particle size of nano-particles was obtained as 70 nm.
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Mohammad Shafiee Mohammad Reza, Ghashang Majid and Fazlinia Abbas, Preparation of 1,4-dihydropyridine Derivatives Using Perchloric Acid Adsorbed on Magnetic Fe3O4 Nanoparticles Coated with Silica, Current Nanoscience 2013; 9 (2) . https://dx.doi.org/10.2174/1573413711309020006
DOI https://dx.doi.org/10.2174/1573413711309020006 |
Print ISSN 1573-4137 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6786 |
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