Abstract
Four dinuclear N-heterocyclic carbene–palladium(II) complexes 1–4 were prepared and characterized by elemental analysis and spectroscopic methods. The X-ray crystal structure of complex 2 showed a dinuclear framework in which N-heterocyclic ligands bridge between two square planar palladium(II) units. Each palladium center is surrounded by an imidazolylidene, a nitrogen atom from the central linking ligand, and two trans-chloride ligands. These dinuclear NHC–palladium(II) complexes exhibited efficient catalytic activities for the Suzuki–Miyaura coupling of aryl and benzyl chlorides with arylboronic acids.
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Acknowledgements
We are grateful to the National Natural Sciences Foundation of China (nos. U1404205, 21572126 and 21202095), the Program for Science & Technology Innovation Talents in Universities of Henan Province (14HASTIT016), Innovation Scientists and Technicians Troop Construction Projects of Henan Province, and Key Scientific and Technological Project of Henan Province (152102410056) for financial support.
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Wang, T., Xu, K., Wang, W. et al. Dinuclear NHC–palladium(II) complexes: synthesis,characterization and application to Suzuki–Miyaura cross-coupling reactions. Transit Met Chem 43, 347–353 (2018). https://doi.org/10.1007/s11243-018-0224-6
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DOI: https://doi.org/10.1007/s11243-018-0224-6