Fig. 2: The substrate scope for two components reaction.

a Standard condition B: Alkynes or olefins (0.36 mmol), 2 (0.30 mmol), BF3·OEt2 (0.30 mmol), toluene (2 mL), 90 °C, 30 min. b Reaction run at 50 °C.

a Standard condition B: Alkynes or olefins (0.36 mmol), 2 (0.30 mmol), BF3·OEt2 (0.30 mmol), toluene (2 mL), 90 °C, 30 min. b Reaction run at 50 °C.