A degassed mixture of ethyl 5-chloro-2-iodobenzoate (0.621 g, 2.00 mmol), Pd(PPh3)4 (0.116 mg, 0.1 mmol), dimethoxyethane (20 mL), phenylboronic acid (0.268 g, 2.2 mmol), K2CO3 (0.829 g, 6.0 mmol), and water (5 mL) was heated under reflux for 6 h. Solvent was removed under reduced pressure. The residue was diluted with sat. NH4Cl (15 mL) and extracted with EtOAc (2×30 mL). The combined organic layers were dried (MgSO4) and concentrated. The crude product was purified by chromatography to afford ethyl 5-chloro-2-phenylbenzoate (0.473 g, 91%) as colorless oil. MS (ESI) m/z: 261.0 (M+H+).
