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Abstract:
The direct C-H functionalization of 1,2-benzazaborines, especially asymmetric version, remains a great challenge. Here we report a palladium-catalyzed enantioselective C-H olefination and allylation reactions of 1,2-benzazaborines. This asymmetric approach is a kinetic resolution (KR), providing various C-B axially chiral 2-aryl-1,2-benzazaborines and 3-substituted 2-aryl-1,2-benzazaborines in generally high yields with excellent enantioselectivities (selectivity (S) factor up to 354). The synthetic potential of this reaction is showcased by late-stage modification of complex molecules, scale-up reaction, and applications. A palladium-catalyzed enantioselective C-H olefination and allylation reactions of 1,2-benzazaborines was developed, which allows to achieve a kinetic resolution of 2-aryl-1,2-benzazaborines representing a straightforward route to construct C-B axial chirality. Two kinds of C-B axially chiral 2-aryl-1,2-benzazaborines are then readily diversified into a range of chiral intermediates, as well as transformed into potential chiral ligand.image
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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN: 1433-7851
Year: 2023
Issue: 47
Volume: 62
1 6 . 1
JCR@2023
1 6 . 1 0 0
JCR@2023
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 7
SCOPUS Cited Count: 11
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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