Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 142, Issue 15, Pages 7100-7107Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.0c00985
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Funding
- European Research Council (ERC) [788558]
- Deutsche Forschungsgemeinschaft (Leibniz Award) [IRTG 2027]
- Alfried Krupp von Bohlen und Halbach Foundation
- Zhejiang University
- European Research Council (ERC) [788558] Funding Source: European Research Council (ERC)
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A modular synthesis of Ru(II)-NHC-diamine complexes from readily available chiral N-heterocyclic carbenes (NHCs) and chiral diamines is disclosed for the first time. The well-defined Ru(II)-NHC-diamine complexes show unique structure and coordination chemistry including an unusual tridentate coordination effect of 1,2-diphenylethylenediamine. The isolated air- and moisture-stable Ru(II)-NHC-diamine complexes act as versatile precatalysts for the asymmetric hydrogenation of isocoumarines, benzothiophene 1,1-dioxides, and ketones. Moreover, on the basis of the identification of reaction intermediates by stoichiometric reactions and NMR experiments, together with the DFT calculations, a possible catalytic cycle was proposed.
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