manganese(IV) oxide in chloroform 1 h;

1.1: N-bromosuccinimide; dibenzoyl peroxide / CCl4 / 4 h / Heating; irradiation 2.1: 34.5 percent / ethanol / 20 °C 3.1: Na / Heating 3.2: 52 percent / 1.5 h / 140 °C 4.1: 70 percent / NaNH2; NH3 / diethyl ether / 1.5 h 5.1: 76.5 percent / MnO2 / CHCl3 / 1 h View Scheme

1.1: 65 percent / HBr; Br2; NaNO2 / H2O / 2 h 2.1: N-bromosuccinimide; dibenzoyl peroxide / CCl4 / 4 h / Heating; irradiation 3.1: 34.5 percent / ethanol / 20 °C 4.1: Na / Heating 4.2: 52 percent / 1.5 h / 140 °C 5.1: 70 percent / NaNH2; NH3 / diethyl ether / 1.5 h 6.1: 76.5 percent / MnO2 / CHCl3 / 1 h View Scheme

1.1: Na / Heating 1.2: 52 percent / 1.5 h / 140 °C 2.1: 70 percent / NaNH2; NH3 / diethyl ether / 1.5 h 3.1: 76.5 percent / MnO2 / CHCl3 / 1 h View Scheme

1: 70 percent / NaNH2; NH3 / diethyl ether / 1.5 h 2: 76.5 percent / MnO2 / CHCl3 / 1 h View Scheme

1.1: 34.5 percent / ethanol / 20 °C 2.1: Na / Heating 2.2: 52 percent / 1.5 h / 140 °C 3.1: 70 percent / NaNH2; NH3 / diethyl ether / 1.5 h 4.1: 76.5 percent / MnO2 / CHCl3 / 1 h View Scheme