Fig. 3: Scope II: variation of the BCBs.

a,b aReaction conditions: 0.2 mmol 1, 1.2 equiv. 2b, and 10 mol% Co(OTf)2/12 mol% L10 in 2.0 mL CH2Cl2 at 25 oC for 16 h. bIsolated yield.
a,b aReaction conditions: 0.2 mmol 1, 1.2 equiv. 2b, and 10 mol% Co(OTf)2/12 mol% L10 in 2.0 mL CH2Cl2 at 25 oC for 16 h. bIsolated yield.