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

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

Scientific reports, Volume: 15, Issue: 1, Start page: 17252

Swansea University Author: Saeid Khodabakhshi

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DOI (Published version): 10.1038/s41598-025-00777-x

Abstract

The primary focus of this study involved the fabrication of a novel nanocatalyst Fe O -supported asparagine functionalized graphene oxide Fe O @GO-N-(Asparagine). The catalyst was synthesized through a four-step procedure. The chemical composition of Fe O @GO-N-(Asparagine) was examined using variou...

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Published in: Scientific reports
ISSN: 2045-2322
Published: Springer Nature 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa69609
Abstract: The primary focus of this study involved the fabrication of a novel nanocatalyst Fe O -supported asparagine functionalized graphene oxide Fe O @GO-N-(Asparagine). The catalyst was synthesized through a four-step procedure. The chemical composition of Fe O @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 Fe O @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.
Keywords: Fe3O4-Magnetized N-(asparagine)-functionalized graphene oxide, Magnetic nano catalyst, Graphene oxide, Pyrano[3,2-c]chromenes, Dihydropyrano[2,3-c]pyrazole, Density functional theorycomputations
College: Faculty of Science and Engineering
Funders: The authors are grateful to Bu-Ali Sina University’s Research Council for funding this research. They also express their gratitude to the Technical University of Liberec on Student Grant Competition SGS-2025-3580. In addition, this work was partially funded by MEYS project No. CZ.02.01.01/00/22_008/0004617 (Eco&Stor) and received support from the European Union’s HORIZON EUROPE WIDERA 2021 program under the SURRI project (Grant Agreement No. 101079345).
Issue: 1
Start Page: 17252

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