Fig. 3: The substrate scope for the chemoselective reaction of olefins with P(=S)-OH.

a Reaction condition: Olefins 4 (0.36 mmol), 2 (0.30 mmol), BF3·OEt2 (0.30 mmol), toluene (2 mL), 90 °C, 30 min.

a Reaction condition: Olefins 4 (0.36 mmol), 2 (0.30 mmol), BF3·OEt2 (0.30 mmol), toluene (2 mL), 90 °C, 30 min.