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- Title
A Pd<sup>II</sup> Complex Bearing a Benzimidazole-Derived Ligand with Potentially 'Mesoionic and Remote' Character and Its Catalytic Activity.
- Authors
Huynh, Han Vinh; Ong, Hong Lee; Bernhammer, Jan C.; Frison, Gilles
- 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.
- Subjects
PALLADIUM compounds; OXIDATIVE addition; DENSITY functional theory; SONOGASHIRA reaction; ARYL bromides; CARBENES
- Publication
European Journal of Inorganic Chemistry, 2013, Vol 2013, Issue 26, p4654
- ISSN
1434-1948
- Publication type
Article
- DOI
10.1002/ejic.201300334