1: With sodium hydroxide; water in methanol T=20°C; 6 h; 2: With hydrogenchloride in methanol; water

1: 4-bromo-benzoic acid ethyl ester With tetrakis(triphenylphosphine) palladium(0) in ethanol; toluene T=20°C; 0.333333 h; 2: 2-Chlorophenyl-dihydroxyborane With potassium carbonate in ethanol; toluene T=70°C; 6 h;