methanol; hydroxylamine

1: 85 percent / 2N aq. NaOH / methanol; H2O / 1) -30 to 0 deg C, 2 h; 2) 40-50 deg C, 0.5 h 2: 47 percent / POCl3 / 1.5 h / Heating 3: 92 percent / POCl3 / 5 h / 180 - 185 °C / high pressure View Scheme