methanesulfonic acid in acetic acid 0.333333 h; Heating;

hydrogenchloride; methanesulfonic acid; acetic anhydride 1) acetic acid, reflux, 15 min, 2) methanol, reflux, 1 h; Yield given. Multistep reaction;

Multi-step reaction with 2 steps 1: 70 percent / hydroxylamine / methanol; tetrahydrofuran / 7 h / Heating2: 91 percent / acetic acid / 18 h / Ambient temperature  

Multi-step reaction with 3 steps 1: 64 percent / 18 h / 40 °C2: 70 percent / hydroxylamine / methanol; tetrahydrofuran / 7 h / Heating3: 91 percent / acetic acid / 18 h / Ambient temperature