hydrogen; platinum(IV) oxide in diethyl ether P=760 Torr; Ambient temperature;

1: 86.6 percent / 4 percent KOH / dioxane; H2O / 1.5 h / Ambient temperature 2: 93.7 percent / L-Selectride / tetrahydrofuran / 3 h / -78 °C 3: 92.4 percent / pyridine / Ambient temperature 4: 81.9 percent / potassium t-butoxide / 2-methyl-propan-2-ol / 1 h / 40 °C 5: H2 / PtO2 / diethyl ether / 760 Torr / Ambient temperature View Scheme

1: pyridine / 4 h / 0 °C 2: 74.8 percent / diethyl ether / 40 h / -60 - -50 °C / Irradiation 3: 86.6 percent / 4 percent KOH / dioxane; H2O / 1.5 h / Ambient temperature 4: 93.7 percent / L-Selectride / tetrahydrofuran / 3 h / -78 °C 5: 92.4 percent / pyridine / Ambient temperature 6: 81.9 percent / potassium t-butoxide / 2-methyl-propan-2-ol / 1 h / 40 °C 7: H2 / PtO2 / diethyl ether / 760 Torr / Ambient temperature View Scheme

1: 74.8 percent / diethyl ether / 40 h / -60 - -50 °C / Irradiation 2: 86.6 percent / 4 percent KOH / dioxane; H2O / 1.5 h / Ambient temperature 3: 93.7 percent / L-Selectride / tetrahydrofuran / 3 h / -78 °C 4: 92.4 percent / pyridine / Ambient temperature 5: 81.9 percent / potassium t-butoxide / 2-methyl-propan-2-ol / 1 h / 40 °C 6: H2 / PtO2 / diethyl ether / 760 Torr / Ambient temperature View Scheme

1: 93.7 percent / L-Selectride / tetrahydrofuran / 3 h / -78 °C 2: 92.4 percent / pyridine / Ambient temperature 3: 81.9 percent / potassium t-butoxide / 2-methyl-propan-2-ol / 1 h / 40 °C 4: H2 / PtO2 / diethyl ether / 760 Torr / Ambient temperature View Scheme

1: 81.9 percent / potassium t-butoxide / 2-methyl-propan-2-ol / 1 h / 40 °C 2: H2 / PtO2 / diethyl ether / 760 Torr / Ambient temperature View Scheme

1: 92.4 percent / pyridine / Ambient temperature 2: 81.9 percent / potassium t-butoxide / 2-methyl-propan-2-ol / 1 h / 40 °C 3: H2 / PtO2 / diethyl ether / 760 Torr / Ambient temperature View Scheme