Synthesis and Characterization of a Novel and Recyclable Palladium N-Heterocyclic Carbene Pyrimidine Nanocatalyst on a Periodic Mesoporous Organosilica and Its Performance Investigation in the Suzuki-Miyaura Reaction

Document Type : Research Article

Authors

Department of Chemistry, Payame Noor University, PO BOX 19395-3697, Tehran, I.R. IRAN

Abstract

In this study, N-heterocyclic carbene palladium complex containing pyrimidine supported on a periodic mesoporous organosilica (Pd-Pym-NHC@PMO) was synthesized from 2-aminopyrimidine in four reaction steps. Structure and Physico-chemical properties of Pd-Pym-NHC@PMO was characterized by different techniques of spectroscopic analysis such as XRD, CP-MAS-NMR, AAS, TGA, and BET porosimetry. After full characterization, its catalytic activity in the synthesis of biaryls via the Suzuki–Miyaura cross-coupling was evaluated under the different conditions such as solvent, temperature, and the molar ratio of the reactants. It was observed that the nanocatalyst Pd-Pym-NHC@PMO exhibited excellent activity. Furthermore, the nanocatalyst can be reused and handled at least eight consecutive without any loss of catalytic activity. The present work is a novel, very mild and environmentally friendly method.

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References

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