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Solvent-free Pechmann synthesis of coumarins catalyzed by magnetic heterogeneous catalyst Fe3O4@rGO-NH

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(1), pp.115-124
  • DOI : 10.1007/s42823-022-00408-9
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : June 16, 2022
  • Accepted : September 13, 2022
  • Published : February 1, 2023

Rezaei-Seresht Esmail 1 Gazkoh Fatemeh Tafazzoli 1 Maleki Behrooz 2

1Department of Chemistry, School of Sciences, Hakim Sabzevari University
2Faculty of Chemistry, University of Mazandaran, Babolsar, Iran

Accredited

ABSTRACT

This work describes the synthesis and characterization of a heterogeneous catalyst consisting of piperazine-functionalized reduced graphene oxide decorated with Fe3O4 nanoparticles (Fe3O4@rGO-NH), and the study of its catalytic activity as a magnetic heterogeneous catalyst for the Pechmann synthesis of coumarins. Catalyst Fe3O4@rGO-NH was fully characterized by various techniques, including IR, XRD, TEM, VSM, TGA, and elemental analysis. Then, the catalyst was used as an efficient and easy-separable heterogeneous catalyst for the solvent-free synthesis of some coumarins by Pechmann reaction. The reaction was optimized in terms of reaction time and temperature, catalyst dosage, and the presence/absence of the solvent. Finally, the reusability of the catalyst was studied.

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