@article{Barzegar_Zare_Ghobadpoor_Dianat_2024, title={Preparation, Characterization and Application of a Novel Organic-Inorganic Hybrid Magnetic Nanomaterial as a Highly Efficient Catalyst for the Synthesis of Bis-Coumarins}, volume={12}, url={https://oiccpress.com/iranian-journal-of-catalysis/article/preparation-characterization-and-application-of-a-novel-organic-inorganic-hybrid-magnetic-nanomaterial-as-a-highly-efficient-catalyst-for-the-synthesis-of-bis-coumarins/}, DOI={10.30495/ijc.2022.688895}, abstractNote={A novel organic-inorganic hybrid magnetic nanomaterial, namely nano-[Fe3O4@SiO2@R-NMe2][FeCl4] (nano-[FSRN][FeCl4]) was prepared, and characterized by EDX, elemental mapping, FE-SEM, FT-IR, XRD, VSM, TG and DTG analyses. Then, it was applied as a highly efficient and magnetically recyclable catalyst for the solvent-free synthesis of bis-coumarins from 4-hydroxycoumarin (2 eq.) and arylaldehydes (1 eq.). NMe2 is a basic group, and FeCl4− is a Lewis acid; thus, nano-[FSRN][FeCl4] can act as a dual-functional catalyst; based on this and the literature, a plausible mechanism was proposed for the reaction. Highlights (a) Preparation of a magnetic nanomaterial with acidic-basic property. (b) Full characterization of the nanomaterial. (c) Catalytic application of the nanomaterial for the synthesis of bis-coumarins. (d) Synthesis of the products in high yields and short reaction times.}, number={1}, journal={Iranian Journal of Catalysis}, publisher={OICC Press}, author={Barzegar, Marziyeh and Zare, Abdolkarim and Ghobadpoor, Aysoda and Dianat, Manije}, year={2024}, month={Jan.}, keywords={Bis-coumarin, Solvent-free, Dual-functional catalyst, Organic-inorganic hybrid magnetic nanomaterial, Nano-[Fe3O4@SiO2@R-NMe2][FeCl4] (nano-[FSRN][FeCl4])} }