A new N–heterocyclic carbene palladium complex immobilized on nano silica: An efficient and recyclable catalyst for Suzuki–Miyaura CC coupling reaction

•A new NHC palladium complex supported on nano‒silica was prepared.•This heterogeneous catalyst was characterized.•This catalyst was highly active in the Suzuki–Miyaura reaction.•The catalyst was reusable.

A new catalytic system based on Pd–NHC complex utilizing (4–pyridyl)bis(imidazolyl)methane as a bidentate NHC ligand supported on nano‒silica is introduced. The catalyst was characterized by FT–IR spectroscopy, thermogravimetric analysis, field emission scanning electron microscopy, energy dispersive X–ray analysis, transmission electron microscopy and elemental analysis. This heterogeneous catalytic system exhibited excellent activity in the Suzuki–Miyaura coupling reaction of various aryl halides with phenylboronic acid, and was reusable several times without significant loss of its catalytic activity.

Graphical abstractA new catalytic system based on Pd-NHC complex of (4-pyridyl)bis(imidazolyl)methane supported on nanosilica is introduced. This heterogeneous catalytic system exhibited excellent activity in the Suzuki–Miyaura coupling reaction of various aryl halides with phenylboronic acid, and was reusable several times without significant loss of its catalytic activity.Figure optionsDownload full-size imageDownload as PowerPoint slide