sodium azide; ammonium chloride in N,N-dimethyl-formamide T=100°C; 5 h;

1.1: di-tert-butyl dicarbonate; pyridine / 1,4-dioxane / 0.17 h 1.2: 24 h / 20 °C 2.1: triethylamine; trifluoroacetic anhydride / dichloromethane / 0 °C 3.1: zinc(II) chloride; water; sodium azide / 24 h / 25 °C / |Micellar solution View Scheme

1: triethylamine; trifluoroacetic anhydride / dichloromethane / 0 °C 2: zinc(II) chloride; water; sodium azide / 24 h / 25 °C / |Micellar solution View Scheme

T=400°C; P=1 Torr; Product distribution; Further Variations:TemperaturesPressures;