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Synergistic performance of a new bimetallic complex supported on magnetic nanoparticles for Sonogashira and C–N coupling reactions.
- Source :
- Scientific Reports; 11/20/2023, Vol. 13 Issue 1, p1-20, 20p
- Publication Year :
- 2023
-
Abstract
- This paper describes the synthesis of a novel Cu–Ni bimetallic system comprising of magnetic nanoparticles, as the core, and 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole (4-ABPT), as a conjugated bridge, between nickel and copper species. With low Cu and Ni loading (0.06 mol% Ni, 0.08 mol% Cu), the resulting Fe<subscript>3</subscript>O<subscript>4</subscript>@SiO<subscript>2</subscript>@4-ABPT/Cu–Ni showed to be a highly efficient catalyst for the Sonogashira and C–N cross-coupling reactions. The developed catalyst was well characterized by FT-IR, XRD, EDX-mapping, FE-SEM, TEM, ICP, VSM, TGA/DTG/DTA, LSV, and XPS techniques. Fe<subscript>3</subscript>O<subscript>4</subscript>@SiO<subscript>2</subscript>@4-ABPT/Cu–Ni nanocatalyst was compatible with a wide range of amines and aryl halides in the Sonogashira and C–N cross-coupling reactions and offered desired coupling products in high to excellent yields under palladium- and solvent-free conditions. Based on the XPS results, the 4-ABPT ligand can adjust electron transfer between Ni and Cu in Fe<subscript>3</subscript>O<subscript>4</subscript>@SiO<subscript>2</subscript>@4-ABPT/Cu–Ni, promoting the formation and stabilization of Cu<superscript>+</superscript> and Ni<superscript>3+</superscript> species. Electronic interactions and the synergistic effect between these metals increased the selectivity and activity of Fe<subscript>3</subscript>O<subscript>4</subscript>@SiO<subscript>2</subscript>@4-ABPT/Cu–Ni catalyst in the Sonogashira and C–N cross-coupling reactions compared with its monometallic counterparts. Additionally, the magnetic properties of Fe<subscript>3</subscript>O<subscript>4</subscript>@SiO<subscript>2</subscript>@4-ABPT/Cu–Ni facilitated its separation from the reaction mixture, promoting its reuse for several times with no significant loss in its catalytic activity or performance. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 13
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Scientific Reports
- Publication Type :
- Academic Journal
- Accession number :
- 173764977
- Full Text :
- https://doi.org/10.1038/s41598-023-44168-6