1: 85 percent / Br2, NaOMe / CH2Cl2; methanol / 2 h / -78 - 20 °C 2: 84 percent / Pd(PPh3)4 / tetrahydrofuran / 12 h / Heating 3: 93 percent / NaH, C2H5SH / dimethylformamide / 10 h / Heating 4: 60 percent / NaOEt / ethanol / 24 h / Heating View Scheme