Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 23, Issue 6, Pages 1253-1257Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201605302
Keywords
asymmetric synthesis; chiral primary amine; Lewis bases; o-quinone methide; b-ketocarbonyls
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Funding
- National Program of Top-notch Young Professionals and One-Hundred Talented Program (D) of CAS
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A dual activation strategy integrating primary amine catalysis and Lewis base activation has been developed for an asymmetric alpha-benzylation reaction. Enamines derived from b-ketocarbonyls could react effectively with in situ generated ortho-quinone methides under Lewis base activation in asymmetric alpha-benzylation of beta-ketocarbonyls and a-branched aldehydes. The approach enables the creation of acyclic all-carbon quaternary stereocenters with excellent enantioselectivities and good activity.
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