1: 68 percent / 25percent aq. NH3, cupric acetate / 10 h / 126 - 129 °C 2: 3 h / 110 - 120 °C 3: 78.4 percent / 25percent aq. NH3 / 1.) 0-5 deg C, 2) 48-50 deg C, 10 h 4: dimethylaniline, POCl3 / toluene / 6 h / 83 - 87 °C View Scheme

ammonium hydroxide; copper diacetate T=126 - 129°C; 10 h;

1: 68 percent / 25percent aq. NH3, cupric acetate / 10 h / 126 - 129 °C 2: 3 h / 110 - 120 °C 3: 78.4 percent / 25percent aq. NH3 / 1.) 0-5 deg C, 2) 48-50 deg C, 10 h View Scheme

1: 68 percent / 25percent aq. NH3, cupric acetate / 10 h / 126 - 129 °C 2: 3 h / 110 - 120 °C View Scheme

1: potassium carbonate; copper; amyl alcohol 2: phosphoryl chloride / 140 °C View Scheme