tert-butyl N-[(3S,4S)-4-azidooxan-3-yl]carbamate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Tert-butyl ((3S,4S)-4-azidotetrahydro-2H-pyran-3-yl)carbamate (1.5 g, 6.19 mmol) was taken up in DCM (5 ml) and 4N HCl dioxane (4.64 ml, 18.57 mmol) added. The reaction mixture was stirred at room temperature for 2 hours. The solvent was removed to give (3S,4S)-4-azidotetrahydro-2H-pyran-3-amine (1.1 g, 6.16 mmol, 99% yield) as an HCl salt. MS (ES+) C5H10N4O requires: 142, found: 143 [M+H]+. The solvent was removed

Conditions: temp:95.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (3R,4R)-3-((tert-butoxycarbonyl)amino)tetrahydro-2H-pyran-4-yl methanesulfonate (2.2 g, 7.45 mmol), sodium azide (0.968 g, 14.90 mmol) and sodium acetate (1.222 g, 14.90 mmol) were taken up in DMF (15 ml). The reaction mixture was heated to 95° C. overnight. The reaction mixture was removed from heat and 20 ml of water was added and stirred while cooling. The reaction mixture was extracted with EtOAc. The organic layers were combined and washed with water. The organics were dried and solvent removed to give tert-butyl ((3S,4S)-4-azidotetrahydro-2H-pyran-3-yl)carbamate (1.8 g, 7.43 mmol, 100% yield) as a yellow oil. MS (ES+) C10H18N4O3 requires: 242, found: 265 [M+Na]+. The reaction mixture was removed from heat 20 ml of water was added while cooling The reaction mixture was extracted with EtOAc washed with water The organics were dried solvent removed

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Tert-butyl ((3S,4S)-4-azidotetrahydro-2H-pyran-3-yl)carbamate (1.5 g, 6.19 mmol) was taken up in DCM (5 ml) and 4N HCl dioxane (4.64 ml, 18.57 mmol) added. The reaction mixture was stirred at room temperature for 2 hours. The solvent was removed to give (3S,4S)-4-azidotetrahydro-2H-pyran-3-amine (1.1 g, 6.16 mmol, 99% yield) as an HCl salt. MS (ES+) C5H10N4O requires: 142, found: 143 [M+H]+. The solvent was removed

Conditions: temp:95.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (3R,4R)-3-((tert-butoxycarbonyl)amino)tetrahydro-2H-pyran-4-yl methanesulfonate (2.2 g, 7.45 mmol), sodium azide (0.968 g, 14.90 mmol) and sodium acetate (1.222 g, 14.90 mmol) were taken up in DMF (15 ml). The reaction mixture was heated to 95° C. overnight. The reaction mixture was removed from heat and 20 ml of water was added and stirred while cooling. The reaction mixture was extracted with EtOAc. The organic layers were combined and washed with water. The organics were dried and solvent removed to give tert-butyl ((3S,4S)-4-azidotetrahydro-2H-pyran-3-yl)carbamate (1.8 g, 7.43 mmol, 100% yield) as a yellow oil. MS (ES+) C10H18N4O3 requires: 242, found: 265 [M+Na]+. The reaction mixture was removed from heat 20 ml of water was added while cooling The reaction mixture was extracted with EtOAc washed with water The organics were dried solvent removed

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Tert-butyl ((3S,4S)-4-azidotetrahydro-2H-pyran-3-yl)carbamate (1.5 g, 6.19 mmol) was taken up in DCM (5 ml) and 4N HCl dioxane (4.64 ml, 18.57 mmol) added. The reaction mixture was stirred at room temperature for 2 hours. The solvent was removed to give (3S,4S)-4-azidotetrahydro-2H-pyran-3-amine (1.1 g, 6.16 mmol, 99% yield) as an HCl salt. MS (ES+) C5H10N4O requires: 142, found: 143 [M+H]+. The solvent was removed

Conditions: temp:95.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (3R,4R)-3-((tert-butoxycarbonyl)amino)tetrahydro-2H-pyran-4-yl methanesulfonate (2.2 g, 7.45 mmol), sodium azide (0.968 g, 14.90 mmol) and sodium acetate (1.222 g, 14.90 mmol) were taken up in DMF (15 ml). The reaction mixture was heated to 95° C. overnight. The reaction mixture was removed from heat and 20 ml of water was added and stirred while cooling. The reaction mixture was extracted with EtOAc. The organic layers were combined and washed with water. The organics were dried and solvent removed to give tert-butyl ((3S,4S)-4-azidotetrahydro-2H-pyran-3-yl)carbamate (1.8 g, 7.43 mmol, 100% yield) as a yellow oil. MS (ES+) C10H18N4O3 requires: 242, found: 265 [M+Na]+. The reaction mixture was removed from heat 20 ml of water was added while cooling The reaction mixture was extracted with EtOAc washed with water The organics were dried solvent removed