Catalytic intermolecular direct arylation of perfluorobenzenes - PubMed

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• PMID: 16819868
• DOI: 10.1021/ja062509l

Catalytic intermolecular direct arylation of perfluorobenzenes

Marc Lafrance et al. J Am Chem Soc. 2006.

Abstract

Penta-, tetra-, tri-, and difluorobenzenes undergo direct arylation with a wide range of arylhalides in high yield. Inverse reactivity is observed compared to the common electrophilic aromatic substitution pathway since electron-deficient, C-H acidic arenes react preferentially. Computational studies indicate that C-H bond cleavage occurs via a concerted carbon-palladium and carbon-hydrogen bond cleaving event involving a carbonate or a bromide ligand. The reactions are rapid, require only a slight excess of the perfluoroarene reagent, and utilize commercially available, air-stable catalyst precursors.

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