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Journal of Chemical Sciences

, Volume 125, Issue 4, pp 835–841 | Cite as

Sulphamic acid-functionalized magnetic Fe3O4 nanoparticles as recyclable catalyst for synthesis of imidazoles under microwave irradiation

  • JAVAD SAFARI
  • ZOHRE ZARNEGAR
Article

Abstract

Trisubstituted imidazoles have been synthesized in high yield in the presence of sulphamic acid-functionalized magnetic Fe3O4 nanoparticles (SA–MNPs) as a novel solid acid catalyst under solvent-free classical heating conditions or using microwave irradiation. The heterogeneous catalyst could be recovered easily and reused many times without significant loss of catalytic activity.

Graphical Abstract

An efficient procedure for the synthesis of imidazoles has been developed by condensation reaction of 1, 2-diketones, aromatic aldehydes, and ammonium acetate using sulphamic acid-functionalized Fe3O4 nanoparticles under microwave irradiation. This method offers several advantages including high yield, short reaction time, simple work-up procedure and recyclability of the magnetic catalyst.

Keywords

Magnetic nanoparticles sulphamic acid imidazole solid acid catalyst microwave irradiation 

Notes

Acknowledgement

We gratefully acknowledge the financial support from the Research Council of the University of Kashan (Grant No. (159198/I)).

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Copyright information

© Indian Academy of Sciences 2013

Authors and Affiliations

  1. 1.Laboratory of Organic Compound Research, Department of Organic Chemistry, College of ChemistryUniversity of KashanKashanIslamic Republic of Iran

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