Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 85, Issue 12, Pages 8176-8184Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.0c00223
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Funding
- National Natural Science Foundation of China [21772204, 21521002]
- CAS [QYZDJ-SSW-SLH023]
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A small library of diaza-crown ether-bridged chiral diphosphoramidite ligands was prepared. In the rhodium-catalyzed asymmetric hydrogenation and hydroformylation reactions, these ligands exhibited distinct properties in catalytic activity and/or enantioselectivity. Hydrogenated products with opposite absolute configurations could be obtained in high yields with excellent ee values by utilizing (S,S)-L1 and (S,S)-L3, respectively. Meanwhile, the addition of alkali metal cations caused variations in catalytic outcomes, showing the supramolecular tunability of these Rh/diphosphoramidite catalytic systems.
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