1: With n-butyllithium in diethyl ether; hexane T=0 - 20°C; 30 h; 2: With zinc(II) chloride in toluene T=120°C; 48 h; 3: With ammonium chloride in water; toluene

triethylamine hydroiodide; copper dichloride; palladium dichloride in 1,2-dichloro-ethane T=20°C; 10 h;

triethylamine hydroiodide; copper(ll) bromide; palladium (II) bromide in 1,2-dichloro-ethane T=20°C; 9 h;