manganese(IV) oxide in dichloromethane 30 h; Ambient temperature;

1: 85 percent / K2CO3 / ethanol / 24 h / Heating 2: 82 percent / t-BuOK / benzene / 24 h / Ambient temperature 3: 100 percent / H2 / 5percent Pd/C / ethanol / 759.8 Torr / Ambient temperature 4: 51 percent / MnO2 / CH2Cl2 / 30 h / Ambient temperature View Scheme

1: 82 percent / t-BuOK / benzene / 24 h / Ambient temperature 2: 100 percent / H2 / 5percent Pd/C / ethanol / 759.8 Torr / Ambient temperature 3: 51 percent / MnO2 / CH2Cl2 / 30 h / Ambient temperature View Scheme

1: 100 percent / H2 / 5percent Pd/C / ethanol / 759.8 Torr / Ambient temperature 2: 51 percent / MnO2 / CH2Cl2 / 30 h / Ambient temperature View Scheme