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- W2803246873 abstract "A highly enantioselective [2,3] Wittig rearrangement of oxindole derivatives was realized by using a chiral N,N'-dioxide/NiII complex as the catalyst under mild reaction conditions. A strong chiral amplification effect was observed, and allowed access to chiral 3-hydroxy 3-substituted oxindoles bearing allenyl groups in high yields and enantioselectivities (up to 92 % ee) by using a ligand with only 15 % ee. A reasonable explanation was given based on the experimental investigations and X-ray crystal structures of enantiomerically pure and racemic catalysts. Moreover, the first catalytic kinetic resolution of racemic oxindole derivatives by a [2,3] Wittig rearrangement was realized with high efficiency and stereoselectivity." @default.
- W2803246873 created "2018-06-01" @default.
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- W2803246873 date "2018-06-11" @default.
- W2803246873 modified "2023-10-03" @default.
- W2803246873 title "Nickel(II)‐Catalyzed Asymmetric Propargyl [2,3] Wittig Rearrangement of Oxindole Derivatives: A Chiral Amplification Effect" @default.
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- W2803246873 doi "https://doi.org/10.1002/anie.201804080" @default.
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