Highly efficient abnormal NHC ruthenium catalyst for Oppenauer-type oxidation and transfer hydrogenation reactions

Pardatscher, Lorenz, Hofmann, Benjamin J., Fischer, Pauline J., Hölzl, Sebastian M., Reich, Robert M., Kühn, Fritz E. and Baratta, Walter (2019) Highly efficient abnormal NHC ruthenium catalyst for Oppenauer-type oxidation and transfer hydrogenation reactions. ACS Catalysis, 9 (12). pp. 11302-11306. ISSN 2155-5435

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Abstract

The ruthenium complex [Ru(OAc)(a-PC)2]Br (3) containing two abnormal NHC ligands is obtained by reaction of Ru(OAc)2(PPh3)2 (1) with 1-(2-diphenylphosphinoethyl)-3-mesitylimidazolium bromide in the presence of NaOAc. Complex 3 catalyzes the Oppenauer-type oxidation of a number of alcohols at unrivalled reaction rates reaching TOFs up to 550 000 h-1, at low catalyst loadings (S/C higher than 10 000) and using acetone in stoichiometric amounts. Complex 3 is also highly active in the reverse transfer hydrogenation of several ketones with 2-propanol, displaying TOFs up to 600 000 h-1.

Item Type: Article
Uncontrolled Keywords: alcohols,carbonyl compounds,n-heterocyclic carbenes,oppenauer-type oxidation,ruthenium,smart ligands,transfer hydrogenation,catalysis,chemistry(all) ,/dk/atira/pure/subjectarea/asjc/1500/1503
Faculty \ School: Faculty of Science > School of Chemistry
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Depositing User: LivePure Connector
Date Deposited: 17 Jul 2021 00:12
Last Modified: 10 Sep 2021 00:22
URI: https://ueaeprints.uea.ac.uk/id/eprint/80628
DOI: 10.1021/acscatal.9b03677

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