Table 1. Optimization of the Reaction Conditionsa.
2a (0.1 mmol), 1a (0.12 mmol), 4CzIPN (3 mol %), [Ni(dtbbpy)(H2O)4]Cl2 (5 mol %) in dry, degassed solvent (2.0 mL, 0.05 M) under blue LED irradiation for 24 h. bHPLC yield using 4,4′-di-tert-butylbiphenyl as an internal standard. cIsolated yield.