Design and Fabrication of a Magnetite-based Polymer-supported Hybrid Nanocomposite: A Promising Heterogeneous Catalytic System Utilized in known Palladium-assisted Coupling Reactions

(E-pub Ahead of Print)

Author(s): Ali Maleki*, Reza Taheri-Ledari, Reza Ghalavand.

Journal Name: Combinatorial Chemistry & High Throughput Screening
Accelerated Technologies for Biotechnology, Bioassays, Medicinal Chemistry and Natural Products Research

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Aim and Objective: Herein, a novel heterogeneous catalytic system constructed of iron oxide and palladium nanoparticles is presented. Firstly, a convenient synthetic pathway for preparation of this catalytic system is introduced, then the application of the fabricated nanocomposite in the Pd-catalyzed C─C coupling reactions is monitored. High reaction yields (98%) have been obtained in a short reaction time, through applying this catalytic system.

Materials and Methods: Fe3O4/P4VP-Pd catalytic system was fabricated via an in situ method by 4-vinylpyridine (4-VP). In this regard, all the essential structural analyses such as FT-IR, EDX, VSM, and TGA have been performed on the Fe3O4/P4VP-Pd catalytic system to investigate its properties. The spherical morphology of the NPs and their uniform size have also been studied by SEM method. Further, the reaction progress was controlled by thin-layer chromatography. Finally, NMR analysis was used to identify the synthesized biphenyl pharmaceutical derivatives.

Results: High efficiency of this catalytic system has been precisely investigated and the optimal conditions was determined. The catalytic process is carried out in 20 min, under mild conditions (room temperature). Then, the purification process is easily performed via magnetic separation of the catalyst NPs. After completion of the synthesis reaction, the NPs were collected, washed, and reused for several times.

Conclusion: Among recently reported heterogeneous catalytic systems, Fe3O4/P4VP-Pd is recommended due to its high catalytic performance, convenience of the preparation process, excellent biocompatibility, economic benefits, and well reusability. Overall, in order to save time in the complex synthetic processes and also prevent using so much chemical reagents and solvents for the purification process, the presented catalytic system could be suitable for scalling up and applying for the industrial applications.

Keywords: Carbon-carbon coupling, Magnetic nanocatalyst, Palladium-catalyzed, Poly (4-vinylpyridine), Suzuki reaction, catalytic system

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(E-pub Ahead of Print)
DOI: 10.2174/1386207323666200128152136
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