1: 65 percent / Na / ethanol / 1.5 h / Heating 2: 74 percent / K2CO3 / benzene / 1.) reflux, 8 h, 2.) RT, 12 h 3: 95 percent / CuBr2 / 1.5 h / Heating 4: 89 percent / LiAlH4 / tetrahydrofuran / 1.5 h / Heating 5: 59 percent / CH2Cl2 / 24 h / Ambient temperature 6: LiAlH4 / tetrahydrofuran / 2 h / Heating View Scheme