期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 135, 期 29, 页码 10598-10601出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja403777k
关键词
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资金
- National Natural Science Foundation of China [21272192, 21201143]
- Program for Changjiang Scholars and Innovative Research Team of the University (PCSIRT)
- National Thousand Plan Foundation of China
- 985 Program of the Chemistry and Chemical Engineering Disciplines of Xiamen University
The development of a chiral-at-metal iridium(III) complex for the highly efficient catalytic asymmetric transfer hydrogenation of beta,beta'-disubstituted nitroalkenes is reported. Catalysis by this inert, rigid metal complex does not involve any direct metal coordination but operates exclusively through weak interactions with functional groups properly arranged in the ligand sphere of the iridium complex. Although the iridium complex relies only on the formation of three hydrogen bonds, it exceeds the performance of most organocatalysts with respect to enantiomeric excess (up to 99% ee) and catalyst loading (down to 0.1 mol %). This work hints at an advantage of structurally complicated rigid scaffolds for non-covalent catalysis, which especially relies on conformationally constrained cooperative interactions between the catalyst and substrates.
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