Fig. 4: Control experiments.
From: Enantioselective Cu-catalyzed double hydroboration of alkynes to access chiral gem-diborylalkanes
(1) 1 was exposed to HBdan in the absence of HBpin, under the standard reaction conditions. (2) 1 was exposed to HBpin in the absence of HBdan, under the standard reaction conditions. (3) One-pot reaction to the target product 59. (4) alkenyl-Bdan 93 and HBpin was exposed under the standard reaction conditions. (5) alkenyl-Bpin 96 and HBdan was exposed under the standard reaction conditions. (6) Deuterium experiment. (7) the yield changes of alkenyl-Bdan 93 and targeted product 4 over the reaction time.
