Enantioselective Au(I)/Au(III) Redox Catalysis Enabled by Chiral (P,N)-Ligands

J Am Chem Soc. 2022 Apr 27;144(16):7089-7095. doi: 10.1021/jacs.2c02799. Epub 2022 Apr 18.

Abstract

Presented herein is the first report of enantioselective Au(I)/Au(III) redox catalysis, enabled by a newly designed hemilabile chiral (P,N)-ligand (ChetPhos). The potential of this concept has been demonstrated by the development of enantioselective 1,2-oxyarylation and 1,2-aminoarylation of alkenes which provided direct access to the medicinally relevant 3-oxy- and 3-aminochromans (up to 88% yield and 99% ee). DFT studies were carried out to unravel the enantiodetermining step, which revealed that the stronger trans influence of phosphorus allows selective positioning of the substrate in the C2-symmetric chiral environment present around nitrogen, imparting a high level of enantioselectivity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkenes*
  • Catalysis
  • Ligands
  • Oxidation-Reduction
  • Stereoisomerism

Substances

  • Alkenes
  • Ligands