Fig. 3: Chemo-divergent (3 + 2) and alkylation dearomatization reactions.

A Reaction discovery; B substrate scope. Reaction conditions: 1 (0.2 mmol), 2 (0.24 mmol.), CPA-7 (10 mol%), and 3 Å MS (50 mg) in toluene (1 mL) at −30 °C for 12 h, isolated yields, ee value was determined by chiral HPLC analysis.