期刊
TETRAHEDRON LETTERS
卷 52, 期 50, 页码 6788-6791出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2011.10.057
关键词
N-Heterocyclic carbene; Iridium complex; Asymmetric transfer hydrogenation; Catalyst precursor; Highly tunable NHC ligand
资金
- Japan Society for the Promotion of Science (JSPS) [23550128]
- Japan Science and Technology Agency (JST) [AS221Z00708D]
- Sumitomo Foundation [100631]
- Grants-in-Aid for Scientific Research [23550128] Funding Source: KAKEN
A new monodentate iridium(III) complex bearing a readily accessible and tunable chiral hydroxy-amide functionalized N-heterocyclic carbene ligand, Cp*lr(NHC)Cl-2, has been synthesized and characterized by crystallographic methods. The monodentate Cp*lr(NHC)Cl-2 complex was found to act as a catalyst precursor for the stereoselective transfer hydrogenation of acetophenone in the presence of KOH even at room temperature. Moderate enantioselectivity was observed in the initial screening of the chiral ligands. (C) 2011 Elsevier Ltd. All rights reserved.
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