sulfuric acid; water in acetone 0.5 h; Ambient temperature;

PdCl2(PPh)3; tetraethylammonium chloride in N,N-dimethyl-formamide 3 h; Ambient temperature;

PdCl2(PPh)3; tetraethylammonium chloride in N,N-dimethyl-formamide 15 h; Ambient temperature;

n-butyllithium; triphenylphosphine; zinc(II) chloride; bis-triphenylphosphine-palladium(II) chloride 1) a) THF, hexane, -70 deg C, 15 min, b) 0 deg C, 5 min, 2) room temperature, 4 h; Yield given. Multistep reaction;