Suzuki-Miyaura coupling reactions of iodo(difluoroenol) derivatives, fluorinated building blocks accessible at near-ambient temperatures

J Org Chem. 2012 Aug 3;77(15):6384-93. doi: 10.1021/jo3011705. Epub 2012 Jul 17.

Abstract

A recently developed method for the near-ambient generation of difluorovinylzinc reagents has facilitated the preparation of 1-(N,N-diethylcarbamoyloxy)-2,2-difluoro-1-iodoethene and 2,2-difluoro-1-iodo-1-(2'-methoxyethoxymethoxy)ethene. The utility of these reagents has been investigated in Suzuki-Miyaura couplings with a range of potassium trifluoroborate coupling partners, with the scope of successful couplings proving wide. Deiodinated species appeared as significant side products, but a solvent change from i-PrOH to t-BuOH suppressed the pathway to these species and improved coupling yields.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Hydrocarbons, Fluorinated / chemical synthesis*
  • Hydrocarbons, Fluorinated / chemistry
  • Hydrocarbons, Iodinated / chemical synthesis*
  • Hydrocarbons, Iodinated / chemistry
  • Molecular Structure
  • Stereoisomerism
  • Temperature*

Substances

  • Hydrocarbons, Fluorinated
  • Hydrocarbons, Iodinated