Organocatalytic Asymmetric Synthesis of Si-Stereogenic Silyl Ethers

J Am Chem Soc. 2022 Jun 15;144(23):10156-10161. doi: 10.1021/jacs.2c04261. Epub 2022 Jun 1.

Abstract

Functionalized enantiopure organosilanes are important building blocks with applications in various fields of chemistry; nevertheless, asymmetric synthetic methods for their preparation are rare. Here we report the first organocatalytic enantioselective synthesis of tertiary silyl ethers possessing "central chirality" on silicon. The reaction proceeds via a desymmetrizing carbon-carbon bond forming silicon-hydrogen exchange reaction of symmetrical bis(methallyl)silanes with phenols using newly developed imidodiphosphorimidate (IDPi) catalysts. A variety of enantiopure silyl ethers was obtained in high yields with good chemo- and enantioselectivities and could be readily derivatized to several useful chiral silicon compounds, leveraging the olefin functionality and the leaving group nature of the phenoxy substituent.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon
  • Ethers* / chemical synthesis
  • Silicon
  • Stereoisomerism

Substances

  • Ethers
  • Carbon
  • Silicon