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Copper(I)-Catalyzed Asymmetric Dearomatization of Indole Acetamides with 3-Indolylphenyliodonium Salts. | LitMetric

Copper(I)-Catalyzed Asymmetric Dearomatization of Indole Acetamides with 3-Indolylphenyliodonium Salts.

Chemistry

State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, P. R. China.

Published: July 2016

AI Article Synopsis

  • The synthesis of 3-(3a-indolyl)hexahydropyrroloindoline motifs is crucial for creating various alkaloid compounds.
  • An innovative intermolecular asymmetric cascade dearomatization reaction has been developed using indole acetamides combined with 3-indolylphenyliodonium salts.
  • This method allows for efficient production of compounds with a unique carbon quaternary stereocenter and has been successfully applied in the asymmetric synthesis of folicanthine.

Article Abstract

The rapid and direct asymmetric synthesis of 3-(3a-indolyl)hexahydropyrroloindoline motifs is an extremely important part of the total synthesis of several alkaloid structures. Herein, an intermolecular, asymmetric cascade dearomatization reaction of indole acetamides with 3-indolylphenyliodonium salts has been developed. This protocol provides a straightforward access to 3-(3a-indolyl)hexahydropyrroloindolines bearing an all-carbon quaternary stereocenter at the C3 position of the indoline ring with high enantioselectivities. The utility of the protocol has been demonstrated by the formal asymmetric synthesis of folicanthine.

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Source
http://dx.doi.org/10.1002/chem.201602229DOI Listing

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