Enantioselective N-Alkylation of Indoles via an Intermolecular Aza-Wacker-Type Reaction

J Am Chem Soc. 2019 Jun 5;141(22):8670-8674. doi: 10.1021/jacs.9b01476. Epub 2019 May 24.

Abstract

The development of an intermolecular and enantioselective aza-Wacker reaction is described. Using indoles as the N-source and a selection of alkenols as the coupling partners selective β-hydride elimination toward the alcohol was achieved. This strategy preserves the newly formed stereocenter by preventing the formation of traditionally observed enamine products. Allylic and homoallylic alcohols with a variety of functional groups are compatible with the reaction in high enantioselectivity. Isotopic-labeling experiments support a syn amino-palladation mechanism for this new class of aza-Wacker reactions.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Alkylation
  • Indoles / chemistry*
  • Stereoisomerism

Substances

  • Indoles