Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 20, Issue 43, Pages 8420-8424Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ob01801b
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Funding
- National Natural Science Foundation of China [22071240]
- Program of Star of Dalian Youth Science and Technology [2020RQ027]
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Unsymmetrical hybrid chiral diphosphorus ligands have been developed and successfully applied in iridium-catalyzed asymmetric hydrogenation of imines, leading to the synthesis of optically active amines with high yields and excellent enantioselectivities.
Unsymmetrical hybrid chiral diphosphorus ligands bearing a spirocyclic phosphoramidite scaffold have been developed and successfully applied in the iridium-catalyzed asymmetric hydrogenation of imines. With this newly developed chiral iridium catalytic system, a wide range of imines including sterically hindered ones could be hydrogenated to give the corresponding optically active amines in high yields (up to >99%) and with excellent enantioselectivities (up to >99% ee). The utility of this hydrogenation has been demonstrated by the preparation of the chiral fungicide (S)-benalaxyl.
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