1: 50 percent / Pd(dppf)Cl2, CuCl, ZnCl3 / tetrahydrofuran / 3 h / Ambient temperature 2: 92 percent / tetrahydrofuran / 1.5 h / Heating 3: 78 percent / ethyl acetate View Scheme

1: 50 percent / Pd(dppf)Cl2, CuCl, ZnCl3 / tetrahydrofuran / 3 h / Ambient temperature 2: 92 percent / tetrahydrofuran / 1.5 h / Heating View Scheme

(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; copper(l) chloride; zinc(II) chloride in tetrahydrofuran 3 h; Ambient temperature;