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<p>The primary focus of this study involved the fabrication of a novel nanocatalyst Fe<sub>3</sub>O<sub>4</sub>-supported asparagine functionalized graphene oxide Fe<sub>3</sub>O<sub>4</sub>@GO-<i>N</i>-(Asparagine). The catalyst was synthesized through a four-step procedure. The chemical composition of Fe<sub>3</sub>O<sub>4</sub>@GO-<i>N</i>-(Asparagine) was examined using various analytical methods, including scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and a Raman. The Fe<sub>3</sub>O<sub>4</sub>@GO-<i>N</i>-(Asparagine) catalyst demonstrated remarkable catalytic action in the synthesis of 5-oxo-dihydropyrano[3,2-c]chromenes as well as dihydropyrano[2,3-c]pyrazole derivatives. The protocol offered several benefits, including short reaction times, the utilization of green solvents, outstanding product yields, and a straightforward work-up procedure. Eventually, density functional theory (DFT) computations were utilized to calculate several parameters, including energy levels, electrostatic potential, and chemical reactivity descriptors based on highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energies. Based on the calculations obtained from DFT, it was determined that the type and position of functional groups on the synthesized compounds had the most significant impact on the calculations.</p>

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Asparagine-modified magnetic graphene oxide as efficient green nanocatalyst for synthesis of chromenes and pyrano pyrazoles derivatives

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月18日

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  • Masoud Khaleghiabbasabadi,
  • Davood Azarifar,
  • Hadi Taghavian,
  • Hadi Hematian,
  • Daniele Silvestri,
  • Bohuslav Rezek,
  • Behrokh Bahrami,
  • Saeed Khodabakhshi

摘要

The primary focus of this study involved the fabrication of a novel nanocatalyst Fe3O4-supported asparagine functionalized graphene oxide Fe3O4@GO-N-(Asparagine). The catalyst was synthesized through a four-step procedure. The chemical composition of Fe3O4@GO-N-(Asparagine) was examined using various analytical methods, including scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and a Raman. The Fe3O4@GO-N-(Asparagine) catalyst demonstrated remarkable catalytic action in the synthesis of 5-oxo-dihydropyrano[3,2-c]chromenes as well as dihydropyrano[2,3-c]pyrazole derivatives. The protocol offered several benefits, including short reaction times, the utilization of green solvents, outstanding product yields, and a straightforward work-up procedure. Eventually, density functional theory (DFT) computations were utilized to calculate several parameters, including energy levels, electrostatic potential, and chemical reactivity descriptors based on highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energies. Based on the calculations obtained from DFT, it was determined that the type and position of functional groups on the synthesized compounds had the most significant impact on the calculations.