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N-heterocyclic carbene adducts of cyclopalladated ferrocenylpyridine containing chloride or iodide anions: synthesis, crystal structures and application in the coupling of terminal alkynes with arylboronic acids

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Abstract

Two air-stable N-heterocyclic carbene (NHC) adducts of cyclopalladated ferrocenylpyridine containing chloride or iodide anions 23 have been easily prepared from the bridge-splitting reaction of the palladacyclic dimer 1 and anion exchange reaction, respectively. They were characterized by elemental analysis, IR, 1H, and 13C NMR. Additionally, the structures of these complexes were determined by single-crystal X-ray analysis. These adducts have been successfully applied to the coupling of terminal alkynes with arylboronic acids under atmospheric conditions.

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Acknowledgments

We are grateful to the National Natural Science Foundation of China (No. 21272110 and 20902043) for financial support of this work.

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Correspondence to Chen Xu.

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Li, HM., Xu, C., Duan, LM. et al. N-heterocyclic carbene adducts of cyclopalladated ferrocenylpyridine containing chloride or iodide anions: synthesis, crystal structures and application in the coupling of terminal alkynes with arylboronic acids. Transition Met Chem 38, 313–318 (2013). https://doi.org/10.1007/s11243-013-9695-7

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  • DOI: https://doi.org/10.1007/s11243-013-9695-7

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