1: 80 percent / aq. Na2CO3 / Pd(PPh3)4 / toluene / 10 h / 80 °C 2: aq. NaOH / methanol / 1 h / Heating 3: 92 mg / aq. NaOH / methanol / 8 h / Heating View Scheme

potassium phosphate; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in tetrahydrofuran 48 h; Heating / reflux; Product distribution / selectivity;