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- W2895736974 endingPage "14741" @default.
- W2895736974 startingPage "14736" @default.
- W2895736974 abstract "Abstract We describe herein a conceptually novel, cooperative Brønsted acid/base catalyzed process for the conjugate addition of cyclic β‐keto esters to ortho ‐quinone methides both generated in situ. Upon hemiacetalization, densely functionalized chiral chromans with two adjacent quaternary and additionally a tertiary stereogenic center were obtained with very good diastereoselectivity (up to >95:5 d.r.) and typically excellent enantioselectivity (up to >99 % ee ). The striking feature and key to success is the dual catalytic activation of both nucleophile and electrophile in two separate cycles with a single chiral catalyst." @default.
- W2895736974 created "2018-10-12" @default.
- W2895736974 creator A5003452138 @default.
- W2895736974 creator A5005127669 @default.
- W2895736974 date "2018-10-18" @default.
- W2895736974 modified "2023-10-07" @default.
- W2895736974 title "Palladium-Catalyzed Enantioselective Addition of Chiral Metal Enolates to In Situ Generated <i>ortho</i> -Quinone Methides" @default.
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