acetic acid in ethanol Heating; Yield given;

manganese(IV) oxide in acetonitrile 1.5 h; Heating;

1: 82 percent / LiBH4 / tetrahydrofuran / 9 h / Ambient temperature 2: 70 percent / MnO2 / acetonitrile / 4.5 h / Heating 3: 96 percent / tetrahydrofuran / 2.5 h / 25 °C 4: 80 percent / MnO2 / acetonitrile / 1.5 h / Heating View Scheme

1: 96 percent / tetrahydrofuran / 2.5 h / 25 °C 2: 80 percent / MnO2 / acetonitrile / 1.5 h / Heating View Scheme

1: 97 percent / S / xylene; dioxane / 144 h / Heating 2: 82 percent / LiBH4 / tetrahydrofuran / 9 h / Ambient temperature 3: 70 percent / MnO2 / acetonitrile / 4.5 h / Heating 4: 96 percent / tetrahydrofuran / 2.5 h / 25 °C 5: 80 percent / MnO2 / acetonitrile / 1.5 h / Heating View Scheme

1: 70 percent / MnO2 / acetonitrile / 4.5 h / Heating 2: 96 percent / tetrahydrofuran / 2.5 h / 25 °C 3: 80 percent / MnO2 / acetonitrile / 1.5 h / Heating View Scheme

1: 57 percent / HCl / 6 h / Heating 2: 97 percent / S / xylene; dioxane / 144 h / Heating 3: 82 percent / LiBH4 / tetrahydrofuran / 9 h / Ambient temperature 4: 70 percent / MnO2 / acetonitrile / 4.5 h / Heating 5: 96 percent / tetrahydrofuran / 2.5 h / 25 °C 6: 80 percent / MnO2 / acetonitrile / 1.5 h / Heating View Scheme