Nano Fe3O4@SiO2@Cl: A Novel Magnetic Nanocatalyst for Efficient Benzopyran Synthesis
نویسندگان
1 Department of Chemistry, Kosar University of Bojnord, Bojnord, Iran
2 Department of Chemistry, Payame Noor University, Tehran, Iran
3 Department of Chemistry, Payame Noor University, Tehran, Iran
4 Department of Chemistry, Payame Noor University, Tehran, Iran
doi
10.48309/chemm.2026.549585.2017چکیده
The development of efficient and recyclable catalytic systems for benzopyran synthesis remains a major challenge in sustainable chemistry. This study reports the design and characterization of a novel magnetic nanocatalyst (Fe3O4@SiO2@Cl) prepared by functionalizing silica-coated magnetite nanoparticles with thionyl chloride. Comprehensive characterization using TG-DTA, FT-IR, XRD, and SEM confirmed the successful synthesis of the catalyst. The nanocatalyst showed exceptional performance in multicomponent benzopyran synthesis, achieving high yields (up to 98%) in short reaction times (15 min) under mild conditions. Notably, the system exhibited broad functional group tolerance, as verified by melting point analysis and NMR spectroscopy (¹H and ¹³C). Key advantages include outstanding selectivity, and easy magnetic separation for recycling. The synergistic combination of a superparamagnetic Fe3O4 core, silica interlayer, and active chlorine species enhances the catalyst's activity. This work offers an eco-friendly, high-performance catalytic solution for benzopyran synthesis with significant industrial potential.
