Chiral Metallacycles as Catalysts for Asymmetric Conjugate Addition of Styrylboronic Acids to α,β-Enones
- 10 June 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 142 (23), 10244-10249
- https://doi.org/10.1021/jacs.0c01563
Abstract
Introducing self-assembly strategies into the construction of catalysts has been proven to have great advantages in asymmetric catalysis. We constructed two chiral metalla-triangles by highly efficient coordination-driven self-assembly from a chiral 3,3'-dipyridyl-substituted BINOL donor. They were successfully applied in asymmetric conjugate addition of a series of alpha,beta-unsaturated ketones with trans-styrylboronic acids. The use of these metalla-triangles as supramolecular catalysts is obviously conducive to the enhancement of catalytic activity and stereoselectivity in the presented addition reactions. Under induction of the chiral metalla-triangles, an array of alpha,beta-enones were converted to chiral gamma,delta-unsaturated ketones in medium to quantitative yields (40-98%) with high enantioselectivities (87-96% ee).Funding Information
- National Cancer Institute (R01 CA215157)
- Ministry of Education of the People's Republic of China (IRT 1231)
- National Natural Science Foundation of China (21773052)
- Program for Social Development of Hangzhou (20170533B10)
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