sodium azide; ammonium chloride in N,N-dimethyl-formamide 90 h; Inert atmosphereReflux;

1.1: 1,10-phenanthroline; copper(l) chloride; potassium hydroxide / anhydrous xylene / 72 h / 140 °C / Inert atmosphere 2.1: trichlorophosphate / 48 h / 0 - 120 °C / Inert atmosphere 2.2: 20 °C / Inert atmosphere; Cooling with ice 3.1: pyridine; hydroxylamine hydrochloride; acetic acid / N,N-dimethyl-formamide / 9 h / 130 °C / Inert atmosphere 4.1: sodium azide; ammonium chloride / N,N-dimethyl-formamide / 90 h / Inert atmosphere; Reflux View Scheme

1.1: trichlorophosphate / 48 h / 0 - 120 °C / Inert atmosphere 1.2: 20 °C / Inert atmosphere; Cooling with ice 2.1: pyridine; hydroxylamine hydrochloride; acetic acid / N,N-dimethyl-formamide / 9 h / 130 °C / Inert atmosphere 3.1: sodium azide; ammonium chloride / N,N-dimethyl-formamide / 90 h / Inert atmosphere; Reflux View Scheme

1.1: 1,10-phenanthroline; copper(l) chloride; potassium hydroxide / anhydrous xylene / 72 h / 140 °C / Inert atmosphere 2.1: trichlorophosphate / 48 h / 0 - 120 °C / Inert atmosphere 2.2: 20 °C / Inert atmosphere; Cooling with ice 3.1: pyridine; hydroxylamine hydrochloride; acetic acid / N,N-dimethyl-formamide / 9 h / 130 °C / Inert atmosphere 4.1: sodium azide; ammonium chloride / N,N-dimethyl-formamide / 90 h / Inert atmosphere; Reflux View Scheme

1: pyridine; hydroxylamine hydrochloride; acetic acid / N,N-dimethyl-formamide / 9 h / 130 °C / Inert atmosphere 2: sodium azide; ammonium chloride / N,N-dimethyl-formamide / 90 h / Inert atmosphere; Reflux View Scheme