hydrogenchloride; sodium hydroxide 1.) water, 50-60 deg C, 2 h; 2.) heating, 1 h; Yield given. Multistep reaction;

1: 1.) sodium hydroxide; 2.) 6 N hydrochloric acid / 1.) water, 50-60 deg C, 2 h; 2.) heating, 1 h 2: diethyl ether / 1 h / Heating 3: 1.6 g / hydrogen chloride(gas), conc. hydrogen chloride / dioxane / 2 h / 50 - 60 °C 4: 0.5 g / selenium dioxide / xylene / 6 h / Heating 5: 1.) N-bromosuccinimide, benzoyl peroxide; 2.) triethylamine / 1.) carbon tetrachloride, irradiation, reflux, 2 h; 2.) reflux, 8 h View Scheme