Nitrogen‐Doped Mesoporous Carbon Loaded With Zn Single Atoms as a Catalyst for the Synthesis of 2,4(5)‐Diarylimidazoles
- 1Department of Organic Chemistry Faculty of Chemistry University of Kashan Kashan Iran
Abstract
Single‐atom catalysts have emerged as highly effective alternatives to conventional metal catalysts due to their uniform active sites and superior catalytic performance. Stabilizing single zinc atoms on nitrogen‐doped mesoporous carbon (NMC) enhances their stability, selectivity, electrical conductivity, and compatibility with green chemistry principles. In this study, a Zn@NMC catalyst was synthesized via solvent evaporation‐induced self‐assembly, followed by thermal polymerization and pyrolysis, and characterized by ¹ H nuclear magnetic resonance (NMR), Brunauer–Emmett–Teller, thermogravimetric analysis, scanning electron microscopy, and energy‐dispersive X‐ray mapping analyses. The catalyst was successfully applied in the one‐pot Radziszewski synthesis of 12 2,4(5)‐diarylimidazole derivatives from phenylglyoxal, various substituted benzaldehydes, and ammonium acetate. ¹ H NMR, ¹³ C NMR, and Fourier transform infrared spectroscopy were used to characterize the products. Optimal results were obtained in methanol at room temperature (25 °C) for 12 h, affording the desired products in yields of up to 97%. The incorporation of isolated zinc atoms into the nitrogen‐rich carbon matrix significantly improved selectivity toward the target diarylimidazoles by suppressing side reactions and preventing catalyst deactivation.
Related
- Facile Nitrogen Doping of Electrospun Mesoporous Carbon Nanofibers via Urea Addition for Polysulfide-Confining Li-S Cathodes and Interlayers
- Ru Nanoparticle Supported by Mesoporous SiOx and Pillared Montmorillonite: Suppressing Catalyst Inhibition in Carbon Dioxide Hydrogenation
- Co-Precipitated FeOx@MOy (M = Si, Al, Ce, Zr) Mesoporous Oxide Catalysts in the Reaction of CO2 Hydrogenation to C2+ Hydrocarbons: Effect of the Catalyst Composition and Synthesis
- Gamma-alumina as a highly active hydrogenation catalyst deciphered by molecular nitrogen
- Mesoporous Ag2Se as a model n-type thermoelectric: soft-templated synthesis and thermal transport engineering
BibTeX
@article{shojaeiasl2026nitrogendoped,
title = {{Nitrogen‐Doped Mesoporous Carbon Loaded With Zn Single Atoms as a Catalyst for the Synthesis of 2,4(5)‐Diarylimidazoles}},
author = {Maryam Shojaei‐Asl and Mohsen Moradian},
journal = {ChemistryOpen},
year = {2026},
month = oct,
doi = {10.1002/open.70318},
url = {https://europepmc.org/article/PMC/PMC13661297},
note = {CC BY},
}
RIS
TY - JOUR
TI - Nitrogen‐Doped Mesoporous Carbon Loaded With Zn Single Atoms as a Catalyst for the Synthesis of 2,4(5)‐Diarylimidazoles
AU - Maryam Shojaei‐Asl
AU - Mohsen Moradian
PY - 2026
DA - 2026/10/13
JO - ChemistryOpen
DO - 10.1002/open.70318
UR - https://europepmc.org/article/PMC/PMC13661297
AB - Single‐atom catalysts have emerged as highly effective alternatives to conventional metal catalysts due to their uniform active sites and superior catalytic performance. Stabilizing single zinc atoms on nitrogen‐doped mesoporous carbon (NMC) enhances their stability, selectivity, electrical conductivity, and compatibility with green chemistry principles. In this study, a Zn@NMC catalyst was synthesized via solvent evaporation‐induced self‐assembly, followed by thermal polymerization and pyrolysis, and characterized by ¹ H nuclear magnetic resonance (NMR), Brunauer–Emmett–Teller, thermogravimetric analysis, scanning electron microscopy, and energy‐dispersive X‐ray mapping analyses. The catalyst was successfully applied in the one‐pot Radziszewski synthesis of 12 2,4(5)‐diarylimidazole derivatives from phenylglyoxal, various substituted benzaldehydes, and ammonium acetate. ¹ H NMR, ¹³ C NMR, and Fourier transform infrared spectroscopy were used to characterize the products. Optimal results were obtained in methanol at room temperature (25 °C) for 12 h, affording the desired products in yields of up to 97%. The incorporation of isolated zinc atoms into the nitrogen‐rich carbon matrix significantly improved selectivity toward the target diarylimidazoles by suppressing side reactions and preventing catalyst deactivation.
SN - 2191-1363
ER -