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A convenient, efficient and reusable N-heterocyclic carbene-palladium(II) based catalyst supported on magnetite for Suzuki–Miyaura and Mizoroki–Heck cross-coupling reactions

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Abstract

In the present work, a new magnetic nanoparticle supported N-heterocyclic carbene-palladium(II) (NO2-NHC-Pd@Fe3O4) nanomagnetic catalyst was synthesized by a facile multistep synthesis under aerobic conditions using inexpensive chemicals. The NO2-NHC-Pd@Fe3O4 nanomagnetic catalyst was characterized by various analytical techniques such as attenuated total reflectance infrared spectroscopy (ATR-IR), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), energy-dispersive X-ray spectroscopy (EDS), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), thermogravimetric analysis (TGA) and Brunauer–Emmett–Teller surface area analysis (BET). The synthesized NO2-NHC-Pd@Fe3O4 nanomagnetic catalyst showed excellent catalytic activity in both Suzuki–Miyaura and Mizoroki–Heck cross-coupling reactions for various substrates under mild reaction conditions. Recovery of the NO2-NHC-Pd@Fe3O4 nanomagnetic catalyst from the reaction mixture was easily accomplished by applying an external magnet. The recovered NO2-NHC-Pd@Fe3O4 nanomagnetic catalyst exhibited very good catalytic activity up to seven recycles in Suzuki–Miyaura and five recycles in Mizoroki–Heck cross-coupling reactions without considerable loss of its catalytic activity.

Graphical abstract: A convenient, efficient and reusable N-heterocyclic carbene-palladium(ii) based catalyst supported on magnetite for Suzuki–Miyaura and Mizoroki–Heck cross-coupling reactions

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Publication details

The article was received on 28 May 2017, accepted on 27 Jul 2017 and first published on 28 Jul 2017


Article type: Paper
DOI: 10.1039/C7NJ01876B
Citation: New J. Chem., 2017, Advance Article
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    A convenient, efficient and reusable N-heterocyclic carbene-palladium(II) based catalyst supported on magnetite for Suzuki–Miyaura and Mizoroki–Heck cross-coupling reactions

    V. Kandathil, B. D. Fahlman, B. S. Sasidhar, S. A. Patil and S. A. Patil, New J. Chem., 2017, Advance Article , DOI: 10.1039/C7NJ01876B

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