In this work, ruthenium and iridium complexes bearing highly powerful N-heterocyclic carbene ligands were successfully employed in hydrogen transfer reactions. A general synthesis route towards heterobimetallic N-heterocyclic dicarbene complexes starting from abnormal N-heterocyclic carbene Ru compounds was established. By introduction of a second abnormal carbene ligand the most active NHC Ru complex for TH of ketones known to date was obtained. In Oppenauer-type oxidation of alcohols the catalyst outperforms all systems known to date.
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In this work, ruthenium and iridium complexes bearing highly powerful N-heterocyclic carbene ligands were successfully employed in hydrogen transfer reactions. A general synthesis route towards heterobimetallic N-heterocyclic dicarbene complexes starting from abnormal N-heterocyclic carbene Ru compounds was established. By introduction of a second abnormal carbene ligand the most active NHC Ru complex for TH of ketones known to date was obtained. In Oppenauer-type oxidation of alcohols the catal...
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