Palladium Catalyzed Asymmetric Three-Component Coupling of Boronic Esters, Indoles, and Allylic Acetates

J Am Chem Soc. 2017 May 3;139(17):6038-6041. doi: 10.1021/jacs.7b01410. Epub 2017 Apr 21.

Abstract

Boronic esters react with 2-lithiated indoles to form boronate intermediates. The boronate reacts with allylic acetates in the presence of (BINAP)Pd catalysts to allylate C3 concurrent with alkyl migration from B to C2 of the indole. Overall, the process is a three-component coupling that joins an allylic acetate, and indole and an organo-B(pin) species to provide substituted indoles and indolines with high enantio-, regio-, and diastereoselectivity.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetates / chemistry*
  • Allyl Compounds / chemistry*
  • Boronic Acids / chemistry*
  • Catalysis
  • Esters / chemistry*
  • Indoles / chemical synthesis*
  • Indoles / chemistry*
  • Molecular Structure
  • Palladium / chemistry*

Substances

  • Acetates
  • Allyl Compounds
  • Boronic Acids
  • Esters
  • Indoles
  • Palladium
  • allyl acetate