hydrogenchloride in ethyl acetate T=0 - 20°C;

1: triethylamine / dichloromethane / 2.17 h / 0 - 20 °C 2: methanol / 15 h / Reflux 3: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 15 h / 0 - 20 °C 4: hydrogenchloride / 1,4-dioxane; methanol / 0.03 h / Reflux View Scheme

1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 15 h / 0 - 20 °C 2: hydrogenchloride / 1,4-dioxane; methanol / 0.03 h / Reflux View Scheme

1: methanol / 15 h / Reflux 2: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 15 h / 0 - 20 °C 3: hydrogenchloride / 1,4-dioxane; methanol / 0.03 h / Reflux View Scheme