1: 97 percent / tetrahydrofuran / 0.25 h / Ambient temperature 2: 1.) n-BuLi / 1.) THF, -78 deg C, 2.) THF, from -78 deg C to room temperature 3: 55 percent / H2, Lindlar / quinoline; hexane / 2 h / Ambient temperature 4: 90 percent / pyridine / 2 h / Ambient temperature 5: 81 percent / sodium amalgam, MeOH, Na2HPO4 / tetrahydrofuran / 2 h / -20 °C 6: 62 percent / PDC / dimethylformamide / 48 h / Ambient temperature 7: 71 percent / TBAF / tetrahydrofuran / 24 h / Ambient temperature View Scheme