Sheikh, Safoora and Nasseri, Mohammad Ali and Allahresani, Ali and Varma, Rajender S. (2022) Copper adorned magnetic nanoparticles as a heterogeneous catalyst for Sonogashira coupling reaction in aqueous media. SCIENTIFIC REPORTS, 12 (1): 17986. ISSN 2045-2322
Full text not available from this repository. (Request a copy)Abstract
A nanomagnetic hydrophilic heterogeneous copper catalyst, termed gamma-Fe2O3@PEG@PAMAM G(0)-Cu, has been successfully prepared and characterized using FT-IR, XRD, FE-SEM, TEM, EDX, mapping, TGA/DTG, VSM and ICP analyses. The catalyst displayed excellent activity for the palladium-free Sonogashira cross coupling reaction of various aryl iodides and bromides with phenylacetylene derivatives in pure water. The presence of polyethylene glycol coupled with hydrophilic character of the Cu-catalyst adorned on gamma-Fe2O3 MNPs provides the ready dispersion of the catalyst particles in water, leading to higher catalytic performance as well as facile catalyst recovery via simple magnetic decantation. The recovered catalyst was reused for at least six successive runs with little reduction in its catalytic activity and any noticeable changes in its structure. The use of water as a green solvent, without requiring any additive or organic solvent, as well as the exploitation of abundant and low-cost copper catalyst instead of expensive Pd catalyst along with the catalyst recovery and scalability, make this method favorable from environmental and economic points of view for the Sonogashira coupling reaction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | C-C; GAMMA-FE2O3 NANOPARTICLES; ORGANIC-SYNTHESIS; SUZUKI-MIYAURA; PALLADIUM-FREE; LIGAND-FREE; CHEMISTRY; CHITOSAN; COMPLEX; HECK |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Feb 2024 07:07 |
| Last Modified: | 29 Feb 2024 15:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/57583 |
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