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  4. Intermolecular Palladium(0)-Catalyzed Atropo-enantioselective C-H Arylation of Heteroarenes
 
research article

Intermolecular Palladium(0)-Catalyzed Atropo-enantioselective C-H Arylation of Heteroarenes

Qui-Hien Nguyen  
•
Guo, Shu-Min
•
Royal, Titouan
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February 5, 2020
Journal Of The American Chemical Society

Atropisomeric (hetero)biaryls are motifs with increasing significance in ligands, natural products, and biologically active molecules. The straightforward construction of the stereogenic axis by efficient C-H functionalization methods is extremely rare and challenging. An intermolecular and highly enantioselective C-H arylation of relevant heteroarenes providing an efficient access to atropisomeric (hetero)biaryls is reported. The use of a Pd(0) complex equipped with H-8-BINAPO as a chiral ligand enables the direct functionalization of a broad range of 1,2,3-triazoles and pyrazoles in excellent yields and selectivities of up to 97.5:2.5 er. The method also allows for an atroposelective double C-H arylation for the construction of two stereogenic axes with >99.5:0.5 er.

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Type
research article
DOI
10.1021/jacs.9b12299
Web of Science ID

WOS:000512222700015

Author(s)
Qui-Hien Nguyen  
Guo, Shu-Min
Royal, Titouan
Baudoin, Olivier
Cramer, Nicolai  
Date Issued

2020-02-05

Published in
Journal Of The American Chemical Society
Volume

142

Issue

5

Start page

2161

End page

2167

Subjects

Chemistry, Multidisciplinary

•

Chemistry

•

catalyzed direct arylation

•

phosphine oxide ligands

•

axially chiral biaryls

•

atroposelective synthesis

•

bond functionalizations

•

2+2+2 cycloaddition

•

natural-products

•

1,2,3-triazoles

•

atropisomerism

•

chemistry

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LCSA  
Available on Infoscience
March 3, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/166677
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