DMSO-Promoted Difluoroalkylation of Organophosphonium Salts with Difluoroenol Silyl Ethers

Org Lett. 2022 Aug 5;24(30):5557-5561. doi: 10.1021/acs.orglett.2c02088. Epub 2022 Jul 22.

Abstract

An efficient method for the synthesis of β,β-di(hetero)aryl-α,α-difluorinated ketones using readily available organophosphonium salts and difluoroenol silyl ethers has been developed. This mild reaction features a good functional group tolerance, a scaled-up synthesis, and synthetic simplicity. By taking advantage of DMSO as a less-toxic promoter and solvent for the difluoroalkylation and C-P bond functionalization, the use of transition-metal catalysts and sensitive additives could be avoided.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Dimethyl Sulfoxide
  • Ethers* / chemistry
  • Ketones / chemistry
  • Salts*

Substances

  • Ethers
  • Ketones
  • Salts
  • Dimethyl Sulfoxide