Journal
SCIENCE CHINA-CHEMISTRY
Volume 65, Issue 12, Pages 2512-2516Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-022-1402-9
Keywords
heterobiaryl N-oxides; dynamic kinetic resolution; chiral phosphoric acids; atroposelectivity; organocatalysis
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Funding
- National Natural Science Foundation of China [21871160, 21672121, 22071130]
- Tsinghua-Peking Centre for Life Sciences (CLS)
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A highly efficient enantioselective synthesis of heterobiaryl N-oxides has been achieved, and their potential as chiral ligands in asymmetric catalysis has been demonstrated.
A highly efficient enantioselective construction of heterobiaryl N-oxides was developed. A series of axially chiral heterobiaryl N-oxides were generated via the cascade reaction of aminobenzamides with heterobiaryl aldehydes in the presence of chiral phosphoric acids. A number of atropisomers were afforded in moderate to good yields with excellent enantioselectivities and diastereoselectivities. Preliminary results demonstrate that the heterobiaryl N-oxides can be utilized as efficient chiral ligands in asymmetric catalysis.
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