1: 88 percent / triethylamine / benzene / 5 h / Ambient temperature 2: 98 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature; atmospheric pressure 3: 91 percent / LiAlH4 / dioxane / 5 h / Heating 4: 43 percent / 0.5 h / 145 °C 5: 95 percent / KOH / methanol; H2O / 1 h / Heating 6: hydrazine monohydrate / ethanol / 3 h / Heating View Scheme

1: 98 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature; atmospheric pressure 2: 91 percent / LiAlH4 / dioxane / 5 h / Heating 3: 43 percent / 0.5 h / 145 °C 4: 95 percent / KOH / methanol; H2O / 1 h / Heating 5: hydrazine monohydrate / ethanol / 3 h / Heating View Scheme

1: 88 percent / triethylamine / benzene / 5 h / Ambient temperature 2: 98 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature; atmospheric pressure 3: 91 percent / LiAlH4 / dioxane / 5 h / Heating 4: 43 percent / 0.5 h / 145 °C 5: 95 percent / KOH / methanol; H2O / 1 h / Heating 6: hydrazine monohydrate / ethanol / 3 h / Heating View Scheme

1: 91 percent / LiAlH4 / dioxane / 5 h / Heating 2: 43 percent / 0.5 h / 145 °C 3: 95 percent / KOH / methanol; H2O / 1 h / Heating 4: hydrazine monohydrate / ethanol / 3 h / Heating View Scheme

1: 95 percent / KOH / methanol; H2O / 1 h / Heating 2: hydrazine monohydrate / ethanol / 3 h / Heating View Scheme

1: 43 percent / 0.5 h / 145 °C 2: 95 percent / KOH / methanol; H2O / 1 h / Heating 3: hydrazine monohydrate / ethanol / 3 h / Heating View Scheme