1: NaBH4 / methanol / 0.5 h / 0 °C 2: 1 N NaOH / tetrahydrofuran / 1 h / Ambient temperature 3: 64 percent / 1-<3-(dimethylamino)propyl>-3-ethylcarbodiiimide / tetrahydrofuran; H2O / 1 h / Ambient temperature 4: Ph3P, diethylazodicarboxylate / tetrahydrofuran / 16 h / Ambient temperature 5: 93 percent / quinoline, H2 / 5percent Pd/C / ethanol / 1 h / 760 Torr / Ambient temperature 6: 45 percent / KOH / dimethylsulfoxide / 5 h / Ambient temperature 7: 70 percent / NaH / dimethylformamide; CH2Cl2 / 5 h / Ambient temperature 8: 72 percent / H2 / 10percent Pd/C / methanol / 2 h / 760 Torr / Ambient temperature View Scheme