Chelating C4-bound imidazolylidene complexes through oxidative addition of imidazolium salts to palladium(0)
- Krüger, Anneke School of Chemistry & Chemical Biology, University College Dublin, Ireland
- Kluser, Evelyne Dept Chemistry, University of Fribourg, Switzerland
- Müller-Bunz, Helge School of Chemistry & Chemical Biology, University College Dublin, Ireland
- Neels, Antonia XRD Application Lab, CSEM, Neuchâtel, Switzerland
- Albrecht, Martin School of Chemistry & Chemical Biology, University College Dublin, Ireland
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10.11.2011
Published in:
- European Journal of Inorganic Chemistry. - 2012, vol. 2012, no. 9, p. 1394-1402
English
Oxidative addition of donor-functionalised 4-iodoimidazolium salts to palladium(0) provides a selective route for the preparation of abnormal chelating N-heterocyclic carbene complexes and enables the introduction of a variety of donor groups. The activation of the C4 position does not necessitate protection of the imidazolium C2 position, thereby leaving this site available for further modification. While metallation of the unsubstituted C2 position of the N-heterocyclic carbene ligand was unsuccessful when palladium was bound to the C4 carbon atom, sequential metallation of first the C2 position, by means of transmetallation, followed by C4–I oxidative addition, afforded a dimetallic complex comprised of two palladium centres bridged by a single NHC ligand.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Chimie
- Language
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- English
- Classification
- Chemistry
- License
- License undefined
- Identifiers
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- RERO DOC 27962
- DOI 10.1002/ejic.201100940
- Persistent URL
- https://folia.unifr.ch/unifr/documents/302039
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