Table 2.

Substrate Scope for 1,2-(Bis)trifluoromethylation^a,b

^aAll reactions were with 1 (0.16 mmol) and 2 (0.16 mmol) in 2.8 mL of solvent for 1 h.

^bThe ¹⁹F NMR yield determined by ¹⁹F NMR spectroscopy with 1-fluoro-4-methylbenzene as the internal standard, with the isolated yields given in parentheses. The E/Z ratios were determined by ¹⁹F NMR spectroscopy of the crude product mixtures.