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- W4200424073 abstract "Strong and confined imidodiphosphorimidate (IDPi) catalysts enable highly enantioselective substitutions of cyclic, aliphatic hemiaminal ethers with enol silanes. 2-Substituted pyrrolidines, piperidines, and azepanes are obtained with high enantioselectivities, and the method displays a broad tolerance of various enol silane nucleophiles. Several natural products can be accessed using this methodology. Mechanistic studies support the intermediacy of non-stabilized, cyclic N-(exo-acyl)iminium ions, paired with the confined chiral counteranion. Computational studies suggest transition states that explain the observed enantioselectivity." @default.
- W4200424073 created "2021-12-31" @default.
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- W4200424073 date "2022-01-12" @default.
- W4200424073 modified "2023-10-17" @default.
- W4200424073 title "Catalytic Asymmetric Additions of Enol Silanes to In Situ Generated Cyclic, Aliphatic <i>N</i>‐Acyliminium Ions" @default.
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- W4200424073 doi "https://doi.org/10.1002/anie.202115036" @default.
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