triethylamine in methanol 0.75 h; Ambient temperature;

1: bromine / CHCl3 / Ambient temperature 2: 90 percent / triethylamine / methanol / 0.75 h / Ambient temperature View Scheme

dihydrogen peroxide; acetic acid T=0°C; 8 h;

1: 100 percent / 30percent aq. H2O2, acetic acid / 8 h / 0 °C 2: 1.) KH / 1.) THF, 2.) THF, reflux, 3 h 3: 98 percent / AlCl3 / CH2Cl2 / 0.17 h / Ambient temperature View Scheme