triethylamine in methanol 1 h; Ambient temperature;

1: 71 percent / Et3N / methanol / 1 h / Ambient temperature 2: 56 percent / thiourea / propan-1-ol / 6.5 h / Heating View Scheme

1: 71 percent / Et3N / methanol / 1 h / Ambient temperature 2: 56 percent / thiourea / propan-1-ol / 6.5 h / Heating 3: 1.) conc. NH3, 2.) Raney nickel / 1.) H2O, dioxane, heating, 2.) H2O, dioxane, reflux, 135 min View Scheme