1: 90 percent / 85percent hydrazine hydrate / 10percent Pd/C / ethanol / 50 °C 2: 92 percent / 1 h / Heating View Scheme

1: 60 percent / sodium methoxide / methanol / 24 h / Heating 2: 90 percent / 85percent hydrazine hydrate / 10percent Pd/C / ethanol / 50 °C 3: 92 percent / 1 h / Heating View Scheme

1: 46.5 percent / 5.5percent HN3 / CHCl3 / 96 h / 120 °C 2: 85 percent / 18 M H2SO4, 13 M HNO3 / 1.5 h / 60 °C 3: 60 percent / sodium methoxide / methanol / 24 h / Heating 4: 90 percent / 85percent hydrazine hydrate / 10percent Pd/C / ethanol / 50 °C 5: 92 percent / 1 h / Heating View Scheme

1: 85 percent / 18 M H2SO4, 13 M HNO3 / 1.5 h / 60 °C 2: 60 percent / sodium methoxide / methanol / 24 h / Heating 3: 90 percent / 85percent hydrazine hydrate / 10percent Pd/C / ethanol / 50 °C 4: 92 percent / 1 h / Heating View Scheme

1 h; Heating;