A PdII Complex Bearing a Benzimidazole-Derived Ligand with Potentially "Mesoionic and Remote" Character and Its Catalytic Activity

Abstract : The oxidative addition of palladium(0) to the C2-protected 5-bromo-2-methylbenzimidazolium tetrafluoroborate 3 affords the complex trans-[PdBr(bimy)(PPh3)2]BF4 (4), which is the first complex of an unprecedented benzimidazole-derived ligand (bimy) with a potentially "mesoionic and remote" character. DFT calculations revealed that the bimy ligand bridges the gap between the mesoionic pyrazolin-4-ylidene and the anionic phenyl ligand. A preliminary catalytic study revealed the promising activity of 4 in the Sonogashira coupling of aryl bromides with phenylacetylene.
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Contributor : Gilles Frison <>
Submitted on : Tuesday, July 23, 2013 - 2:07:35 PM
Last modification on : Wednesday, March 20, 2019 - 12:12:02 PM

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Han Vinh Huynh, Hong Lee Ong, Jan C. Bernhammer, Gilles Frison. A PdII Complex Bearing a Benzimidazole-Derived Ligand with Potentially "Mesoionic and Remote" Character and Its Catalytic Activity. European Journal of Inorganic Chemistry, Wiley-VCH Verlag, 2013, pp.4654-4661. ⟨10.1002/ejic.201300334⟩. ⟨hal-00847374⟩

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