Fig. 4: Difluorocarbene-induced propargyl Stevens rearrangement of tertiary amines.

Reaction condition: ^a8 (1 equiv., 0.2 mmol), 2d (3 equiv., 0.6 mmol), H₂O (15 equiv.), Rb₂CO₃ (3 equiv.), CH₃CN (2 mL) at 90 ^oC for 12 h under argon.