1: 81.2 percent / H2 / 5 percent Pd-C / methanol / 5 h / Ambient temperature 2: 97 percent / pyridine / CH2Cl2 / 12 h / Ambient temperature 3: 90 percent / n-Bu4NF / tetrahydrofuran / 2.5 h / Ambient temperature 4: 90 percent / 10N aq.KOH / methanol / 0.5 h / Ambient temperature View Scheme

1: 81.2 percent / H2 / 5 percent Pd-C / methanol / 5 h / Ambient temperature 2: 97 percent / pyridine / CH2Cl2 / 12 h / Ambient temperature 3: 90 percent / n-Bu4NF / tetrahydrofuran / 2.5 h / Ambient temperature View Scheme

1: 81 percent / pyridinium chlorochromate, Celite / CH2Cl2 / 2 h / Ambient temperature 2: 81 percent / BF3*Et2O / CH2Cl2 / 1 h / Ambient temperature 3: 51 percent / benzophenone / benzene / 0.42 h / Irradiation 4: 78 percent / CH3I / aq. ethanol / 48 h / Heating View Scheme

hydrogen; palladium on activated charcoal in methanol 5 h; Ambient temperature;

1: 97 percent / p-toluenesulfonic acid / CH2Cl2 / 2 h / Ambient temperature 2: 68 percent / diethyl ether / 2 h 3: 90 percent / p-TsOH / methanol / 2 h / Ambient temperature 4: 87 percent / pyridine / CH2Cl2 / 12 h / Ambient temperature 5: 90 percent / n-Bu4NF / tetrahydrofuran / 1.5 h / Ambient temperature 6: 96 percent / 1N aq.KOH / methanol / 0.17 h / Ambient temperature View Scheme