hydrazine hydrate in ethanol Heating;

1.1: aq. NaOH / 0.08 h / 20 °C 1.2: 92 percent / H2O / 12 h 2.1: 80 percent / aq. NaOH / methanol / Heating 3.1: 53 percent / PPh3; diethyl azodicarboxylate / tetrahydrofuran / 0 - 20 °C 4.1: 65 percent / hydrazine monohydrate / ethanol / Heating View Scheme

1.1: 80 percent / SOCl2 2.1: 74 percent / Zn; aq. HCl / 3 h / 70 °C 3.1: aq. NaOH / 0.08 h / 20 °C 3.2: 92 percent / H2O / 12 h 4.1: 80 percent / aq. NaOH / methanol / Heating 5.1: 53 percent / PPh3; diethyl azodicarboxylate / tetrahydrofuran / 0 - 20 °C 6.1: 65 percent / hydrazine monohydrate / ethanol / Heating View Scheme

1.1: 74 percent / Zn; aq. HCl / 3 h / 70 °C 2.1: aq. NaOH / 0.08 h / 20 °C 2.2: 92 percent / H2O / 12 h 3.1: 80 percent / aq. NaOH / methanol / Heating 4.1: 53 percent / PPh3; diethyl azodicarboxylate / tetrahydrofuran / 0 - 20 °C 5.1: 65 percent / hydrazine monohydrate / ethanol / Heating View Scheme

1: 80 percent / aq. NaOH / methanol / Heating 2: 53 percent / PPh3; diethyl azodicarboxylate / tetrahydrofuran / 0 - 20 °C 3: 65 percent / hydrazine monohydrate / ethanol / Heating View Scheme