trichlorophosphate in water 0.5 h; RefluxInert atmosphere;

1: trichlorophosphate / water / 0.5 h / |Reflux; |Inert atmosphere 2: sodium azide / N,N-dimethyl-formamide / 2 h / 100 °C / |Inert atmosphere 3: triphenylphosphine / tetrahydrofuran / 0.33 h / 20 °C / |Inert atmosphere 4: pyridine / 1 h / 60 °C / |Inert atmosphere 5: ammonium formate; 5 palladium on charcoal / methanol / 20 h / 20 °C / |Inert atmosphere 6: N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate / N,N-dimethyl-formamide / 16 h / 20 °C / |Inert atmosphere 7: dichloromethane View Scheme

1: trichlorophosphate / water / 0.5 h / |Reflux; |Inert atmosphere 2: sodium azide / N,N-dimethyl-formamide / 2 h / 100 °C / |Inert atmosphere 3: triphenylphosphine / tetrahydrofuran / 0.33 h / 20 °C / |Inert atmosphere View Scheme