caesium carbonate; 2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl; palladium diacetate in toluene T=100°C; 0.5 h; microwave irradiation;

copper(l) iodide; 1,10-phenanthroline; tetrabutylammomium bromide; potassium acetate in 1,4-dioxane T=100°C; 12 h;