Fig. 3: Scope of alkenes.

The reaction was conducted using 1 (0.1 mmol), 2 (0.2 mmol) under standard conditions unless otherwise noted. Diastereoisomeric ratio (dr) was determined by ¹H NMR of crude mixture of the reaction. Isolated yield after flash chromatography. The disordered part, solvent molecules and hydrogen atoms of crystal structures have been omitted for clarity. For more details, see Supplementary Figs. 17–24. ^a Yield based on the recovery of alkenes. ^b 5 mol% PC was used. ^c The reaction was conducted using 1 (0.1 mmol), 2 (0.2 mmol), PC (5 mol%), NH₄OAc (0.3 mmol), LiBF₄ (0.1 mmol) in CH₃CN:PhCl = 100:1 (10.0 mL CH₃CN). ^d The reaction was conducted on 2.0 mmol scale.