Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 23, Pages 6617-6621Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201701849
Keywords
atropisomerism; biaryls; olefination; kinetic resolution; palladium
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Funding
- NSFC [21422206, 21572201]
- National Basic Research Program of China [2015CB856600]
- Zhejiang Provincial NSFC [LR17B020001]
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Atroposelective synthesis of axially chiral biaryls by palladium-catalyzed C-H olefination, using tert-leucine as an inexpensive, catalytic, and transient chiral auxiliary, has been realized. This strategy provides a highly efficient and straightforward access to a broad range of enantioenriched biaryls in good yields (up to 98%) with excellent enantioselectivities (95 to >99% ee). Kinetic resolution of trisubstituted biaryls bearing sterically more demanding substituents is also operative, thus furnishing the optically active olefinated products with excellent selectivity (95 to >99% ee, s-factor up to 600).
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