1: 96 percent / hydroxylamine hydrochloride; sodium acetate / ethanol; H2O / 2 h / Heating 2: PCl5 / CH2Cl2 / 2 h / 20 °C 3: acetic acid; Zn / 0.5 h / Heating 4: BH3*THF / tetrahydrofuran / 0.5 h / Heating 5: 98 percent / triethylamine / CH2Cl2 / 1 h / 20 °C 6: 82 percent / hydrochloric acid; SnCl2 / ethanol / 2 h / Heating 7: triethylamine / CH2Cl2 / 1 h / 20 °C 8: NaOH / ethanol; H2O / 2 h / 50 °C View Scheme