4.6 Article

Efficient and Recyclable Solid-Supported Pd(II) Catalyst for Microwave-Assisted Suzuki Cross-Coupling in Aqueous Medium

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ACS OMEGA
卷 7, 期 33, 页码 28831-28848

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AMER CHEMICAL SOC
DOI: 10.1021/acsomega.2c01809

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  1. Faculty of Science GFS [GS01/05, GS01/03, GS03/01, GS02/01, GS03/08]

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A solid-supported palladium(II) complex based on chitosan was synthesized and characterized. The catalyst showed efficient catalytic activity in Suzuki cross-coupling reactions, good recyclability, and thermal stability.
Solid-supported catalysts play efficient and crucial roles in organic synthesis. A solid-supported palladium(II) complex based on chitosan was synthesized and fully characterized using all possible tools (Fourier transform infrared spectroscopy, thermog-ravimetry analysis, differential scanning calorimetry, X-ray photo-electron spectroscopy, energy-dispersive X-ray spectroscopy, inductively coupled plasma atomic emission spectrometry, scanning electron microscopy, transmission electron microscopy, and Brunauer-Emmett-Teller analysis). The catalytic activity of the solid-phase catalyst in Suzuki cross-coupling reactions was evaluated in aqueous solvents under both conventional heating and microwave irradiation conditions. The recyclability and thermal stability of the prepared catalyst were also examined, and the catalyst was found to be active till five consecutive runs without a notable loss of activity under the microwave condition, with the turnover number and turnover frequency values reaching 19,019 and 114,114 h-(1), respectively.

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