Table 2.
Reaction conditions: substrate 1a (0.1 mmol), methyl 2-iodobenzoate 2a (3.0 equiv), Pd(OAc)2 (10 mol%), ligand (20 mol%), 2-norbornene (1.5 equiv), AgOAc (3.0 equiv), TBME (1.0 mL), 95 °C, air, 24 h.
Yield of product 3aa was determined by 1H NMR using dibromomethane as an internal standard.