Fig. 3: Scope of the chiral reactiona.
From: Enantioselective Cu-catalyzed double hydroboration of alkynes to access chiral gem-diborylalkanes
Reaction conditions: aAfter Cu(acac)2 (6 mol%), Walphos (6 mol%), HBdan (0.24 mmol) and PMHS (0.2 mmol) were mixed in cyclohexane (1.0 mL) at room temperature for 10 min, HBpin (0.3 mmol) and 1 (0.2 mmol) were added subsequently at room temperature, then the resulting mixture was stirred at ambient temperature for 60 h. bJosiphos (6 mol%).
