potassium hydroxide in methanol 3 h; Heating;

1: 91 percent / hydroxylamine hydrochloride / H2O; methanol / 12 h / Heating 2: 83 percent / KOH / methanol / 3 h / Heating View Scheme

1: 85 percent / t-BuOK / 2-methyl-propan-2-ol / 20 h / Ambient temperature 2: 91 percent / hydroxylamine hydrochloride / H2O; methanol / 12 h / Heating 3: 83 percent / KOH / methanol / 3 h / Heating View Scheme

sodium hydroxide