Figure 2: Reaction scope*.

*All reactions unless notified were performed in experimental section procedure on a 0.1–1.5 mmol substrate scale in CH₂Cl₂ (0.1 mmol ml⁻¹), 0.1 equiv. InCl₃, 4 Å MS (50 mg per 0.1 mmol), 2.0 equiv. DDQ, 5.0 equiv. DBP at RT. Relative configuration of the products were assigned based on X-ray structure of 2h and 2j (CCDC 1000811, CCDC 1000827, See Supplementary Data 2 and 3 for more details). **Isolated yields. ***1.1 equiv. DDQ was used.