Dynamic Kinetic Resolution of Biaryl Lactones via a Chiral Bifunctional Amine Thiourea-Catalyzed Highly Atropo-enantioselective Transesterification

J Am Chem Soc. 2016 Jun 8;138(22):6956-9. doi: 10.1021/jacs.6b03609. Epub 2016 May 26.

Abstract

A solution to the unmet synthetic challenge of achieving highly atropo-enantioselective transesterification of Bringmann's lactones has been realized, employing a chiral bifunctional amine thiourea as promoter. The synergistic activation of the lactones and alcohols/phenols by the respective thiourea and amine groups is crucial for achieving the highly enantioselective, high-yielding dynamic kinetic resolution process. This protocol gives highly optically pure, axially chiral biaryl compounds with a broad substrate scope under mild reaction conditions.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Amines / chemistry*
  • Benzene Derivatives / chemical synthesis*
  • Benzene Derivatives / chemistry
  • Catalysis
  • Chemistry Techniques, Synthetic / methods*
  • Esterification
  • Kinetics
  • Lactones / chemical synthesis*
  • Lactones / chemistry
  • Molecular Structure
  • Stereoisomerism
  • Thiourea / chemistry*

Substances

  • Amines
  • Benzene Derivatives
  • Lactones
  • Thiourea