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Keywords:

  • Fluorine;
  • Trifluoromethylation;
  • Electrophilic;
  • Sulfur;
  • C–C bond formation

Abstract

A novel reagent, [(oxido)phenyl(trifluoromethyl)-λ4-sulfanylidene]dimethylammonium tetrafluoroborate has been developed for the electrophilic trifluoromethylation of carbon nucleophiles. The reagent was designed as a trifluorinated version of a Johnson-type methyl-transfer reagent. The firstexample of vinylogous trifluoromethylation of dicyanoalkylidenes is also demonstrated.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)