Journal
CHEMICAL COMMUNICATIONS
Volume 49, Issue 33, Pages 3470-3472Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cc41315b
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Funding
- National Natural Science Foundation of China [21021001, 21172151]
- Ministry of Education [20110181130014]
- National Basic Research Program of China (973 Program) [2010CB833300]
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A cooperative bimetallic catalyst system was applied in the catalytic asymmetric cross-dehydrogenative coupling of beta-ketoesters and xanthene. Various optically active xanthene derivatives bearing a quaternary stereogenic carbon center were obtained in moderate to good yields (up to 90%) with excellent enantioselectivities (up to 99% ee). Meanwhile, a transition-state model was proposed to explain the origin of the asymmetric induction.
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