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- W3039993446 abstract "A novel asymmetric synthesis of dihydropyridinones with vicinal quaternary stereocenters has been realized by asymmetric aza-Diels–Alder reactions of 3-amido allylic alcohols with oxazolones enabled by chiral phosphoric acid catalysis. A series of aryl/alkyl- and alkyl/alkyl-disubstituted 3-amido allylic tertiary alcohols and 4-substituted oxazolones could be well tolerated in these reactions, producing dihydropyridinones with excellent diastereoselectivities and high enantioselectivities. Mechanistic study and control experiments were performed to shed light on the reaction mechanism, in which a configurationally defined β,β-disubstituted α,β-unsaturated N–H ketimine was proposed as the key intermediate." @default.
- W3039993446 created "2020-07-10" @default.
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- W3039993446 date "2020-06-30" @default.
- W3039993446 modified "2023-10-05" @default.
- W3039993446 title "Asymmetric Aza-Diels–Alder Reactions of in Situ Generated β,β-Disubstituted α,β-Unsaturated N–H Ketimines Catalyzed by Chiral Phosphoric Acids" @default.
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- W3039993446 doi "https://doi.org/10.1021/acs.orglett.0c01994" @default.
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