Copper(I)-Mediated Direct Trifluoromethylthiolation of Allylic Halides with Elemental Sulfur and (Trifluoromethyl)trimethylsilane.

A new method has been developed for the copper-mediated trifluoromethylthiolation of allylic halides by using potassium fluoride, elemental sulfur, and (trifluoromethyl)trimethylsilane in anhydrous N, N-dimethylformamide. This protocol provides facile access to a variety of allylic trifluoromethyl thioethers in moderate to good yields under mild, ligand-free reaction conditions. [ABSTRACT FROM AUTHOR]