Table 2. Scope of BCBsa.
Reaction conditions: 1 (0.2 mmol, 1.0 equiv.), 2a (0.3 mmol, 1.5 equiv.), Ru(bpy)3Cl2 (1 mol%), Cs2CO3 (0.3 mmol, 1.5 equiv.), CH3CN (0.05 M), under N2. Isolated yield. n. r. = no reaction.
Using Ir[dF(CF3)ppy2(dtbbpy)]PF6 instead of Ru(bpy)3Cl2.