in tetrachloromethane 5 h; Ambient temperature; Yield given. Yields of byproduct given;

1: CCl4 / 5 h / Ambient temperature 2: 91.9 percent / LiAlH4 / 1,2-dimethoxy-ethane / 60 h / 85 °C 3: 81.2 percent / imidazole / dimethylformamide / 20 h / Ambient temperature 4: 99.2 percent / H2 / Pd/C / 1,2-dimethoxy-ethane / 8 h / 760 Torr / Ambient temperature 5: 76.2 percent / Et3N / CH2Cl2 / 15 h / Ambient temperature 6: 46.9 percent / DBU / dimethylsulfoxide / 35 h / 80 °C 7: 60 mg / aq. HF-urea / tetrahydrofuran / 15 h / Ambient temperature View Scheme