Aryl-CF(3) bond-forming reductive elimination from palladium(IV)

J Am Chem Soc. 2010 Mar 10;132(9):2878-9. doi: 10.1021/ja100955x.

Abstract

This communication describes oxidatively induced Ar-CF(3) bond-forming reductive elimination from new Pd(II) complexes of general structure (L approximately L)Pd(II)(Ar)(CF(3)). The electrophilic fluorinating reagent N-fluoro-2,4,6-trimethylpyridinium triflate promotes these reactions in good to excellent yields. The palladium(IV) intermediate ((t)Bu-bpy)Pd(IV)(CF(3))(F)(OTf)(C(6)H(4)F) has been isolated, characterized, and demonstrated to undergo high yielding Ar-CF(3) coupling upon thermolysis. This work provides an attractive conceptual framework for the development of Pd(II/IV)-catalyzed arene trifluoromethylation reactions.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Binding Sites
  • Crystallography, X-Ray
  • Free Radicals / chemistry
  • Hydrocarbons, Fluorinated / chemical synthesis*
  • Hydrocarbons, Fluorinated / chemistry
  • Ligands
  • Models, Molecular
  • Molecular Structure
  • Organometallic Compounds / chemistry*
  • Oxidation-Reduction
  • Palladium / chemistry*

Substances

  • Free Radicals
  • Hydrocarbons, Fluorinated
  • Ligands
  • Organometallic Compounds
  • Palladium