1: 2-methoxy-ethanol / 11 h / 150 °C 2: 96 percent / H2SO4 / H2O / 0.05 h 3: 1.) sodium hypochlorite, 2.) thionyl chloride / 1.) steam bath, 10 min, 2.) reflux, 2 h 4: DMF, 3 h, 135 deg C 5: hydrazine hydrate / Raney-nickel type 28 / dimethylformamide; methanol / 2 h / 45 - 50 °C View Scheme