TY - EJOUR
AU - Barzegar, Marziyeh
AU - Zare, Abdolkarim
AU - Ghobadpoor, Aysoda
AU - Dianat, Manije
PY - 2024
DA - January
TI - Preparation, Characterization and Application of a Novel Organic-Inorganic Hybrid Magnetic Nanomaterial as a Highly Efficient Catalyst for the Synthesis of Bis-Coumarins
T2 - Iranian Journal of Catalysis
VL - 12
L1 - 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/
DO - 10.30495/ijc.2022.688895
N2 - 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.
IS - 1
PB - OICC Press
KW - Bis-coumarin, Solvent-free, Dual-functional catalyst, Organic-inorganic hybrid magnetic nanomaterial, Nano-[Fe3O4@SiO2@R-NMe2][FeCl4] (nano-[FSRN][FeCl4]) 
EN -