Table1.
Conditions: 1a (0.1 mmol), 2a (1.5 equiv), Pd(OAc)2 (10 mol%), ligand (20 mol%), Ag2CO3 (1.5 equiv), K2HPO4 (1.5 equiv), BQ (0.5 equiv), H2O (10.0 equiv), t-BuOH (1.0 mL), 80 °C, air, 12 h.
1H NMR yields, using CH2Br2 as an internal standard. BQ = benzoquinone.