1: 100 percent / bromine / CHCl3 / 2 h / Heating 2: 73 percent / Na2S / methanol / 2 h 3: 97 percent / CH2Cl2 / 4 h / Ambient temperature 4: 90 percent / NaOH / hexane; H2O 5: 100 percent / 2,2,4-trimethyl-pentane / 0.25 h / Heating 6: 28 percent / methanol / 3 h / Irradiation View Scheme

1: 100 percent / bromine / CHCl3 / 2 h / Heating 2: 73 percent / Na2S / methanol / 2 h 3: 97 percent / CH2Cl2 / 4 h / Ambient temperature 4: 90 percent / NaOH / hexane; H2O 5: 100 percent / 2,2,4-trimethyl-pentane / 0.25 h / Heating 6: 5 percent / Raney-Nickel (W5) / ethanol / 4 h / Heating View Scheme

hydrogenchloride in diethyl ether Heating;