potassium carbonate; bis-triphenylphosphine-palladium(II) chloride; 4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-4',4',5',5'-tetramethyl-1,3,2-dioxaborolane in dimethyl sulfoxide T=100°C;

potassium carbonate; bis-triphenylphosphine-palladium(II) chloride in dimethyl sulfoxide T=80°C; 6 h;

1: aq. NH3; KOH / ethanol / Heating 2: 86 percent / K2CO3 / PdCl2(PPh3)2 / dimethylsulfoxide / 6 h / 80 °C View Scheme

1: aq. NH3; KOH / ethanol / Heating 2: 86 percent / K2CO3 / PdCl2(PPh3)2 / dimethylsulfoxide / 6 h / 80 °C View Scheme