1: 79 percent / NH2OH.HCl, KOH / aq. ethanol / 4 h / Heating 2: 1) pyridine, 2) 2N-NaOH / 1) dioxane, r.t., 3 h, 2) ethanol, r.t., 3 h View Scheme

pyridine; sodium hydroxide 1) dioxane, r.t., 3 h, 2) ethanol, r.t., 3 h; Yield given. Multistep reaction;

phosphorus trichoride in chloroform 2 h; Heating;