4.8 Article

PyBidine-NiCl2-Catalyzed Asymmetric Addition of Alcohols and Peroxides to Isatin-Derived Ketimines

Journal

ORGANIC LETTERS
Volume 17, Issue 10, Pages 2416-2419

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.5b00928

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Funding

  1. Ministry of Education, Culture, Sports, Science and Technology, Japan
  2. Workshop on Chirality at Chiba University (WCCU)
  3. Grants-in-Aid for Scientific Research [26105706] Funding Source: KAKEN

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An (S,S)-diphenyldiamine-derived bis(imidazolidine)pyridine (PyBidine)-NiCl2 complex catalyzed the asymmetric addition of methanol and peroxides to isatin-derived N-Boc-imines to form chiral quaternary N,O-acetals at the C3 position of the resulting oxiindoles in up to 99% yield with 94% ee.

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