TERT-BUTYL (4-(AMINOMETHYL)TETRAHYDRO-2H-PYRAN-4-YL)CARBAMATE

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of tert-butyl (4-cyanotetrahydro-2H-pyran-4-yl)carbamate (59 g, 260 mmol) and Raney Nickel (25 g) in isopropanol and ammonia (700 mL) was stirred under a hydrogen atmosphere. After 36 hours, the solids were filtered and the filtrate was concentrated under reduced pressure. The residue was recrystallized from DCM (60 mL) to afford tert-butyl [4-(aminomethyl)tetrahydro-2H-pyran-4-yl]carbamate. MS ESI calc'd. for C11H23N2O3 [M+H]+ 231. found 231. 1H NMR (400 MHz, CDCl3) δ 4.42 (s, 1H), 3.77 (d, J=11.6 Hz, 2H), 3.66-3.60 (m, 2H), 2.94 (s, 2H), 1.97-1.94 (d, J=13.6 Hz, 2H), 1.57 (m, 2H), 1.44 (s, 9H), 1.28 (s, 2H). the solids were filtered the filtrate was concentrated under reduced pressure The residue was recrystallized from DCM (60 mL)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of tert-butyl (4-(aminomethyl)tetrahydro-2H-pyran-4-yl)carbamate (G15, 195 mg) and sodium carbonate (449 mg) in acetone (5 mL) and water (2 mL), benzyloxycarbonyl chloride (241 μL) was added at room temperature, and the mixture was stirred at the same temperature for 2 hours. To the reaction mixture, ethyl acetate and saturated aqueous sodium chloride were added. The organic layer was separated, and dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (eluent, 100 to 0% hexane in ethyl acetate) to obtain tert-butyl (4-(((benzyloxycarbonyl)amino)methyl)tetrahydro-2H-pyran-4-yl)carbamate (G16, 141 mg). was added at room temperature The organic layer was separated dried over anhydrous sodium sulfate the solvent was evaporated under reduced pressure The obtained residue was purified by silica gel column chromatography (eluent, 100 to 0% hexane in ethyl acetate)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of tert-butyl (4-cyanotetrahydro-2H-pyran-4-yl)carbamate (G14, 210 mg) and cobalt(II) chloride (241 mg) in methanol (9 mL), sodium borohydride (175 mg) was added at room temperature, and the mixture was stirred at the same temperature for 1 hour. To the reaction mixture, cobalt(II) chloride (241 mg) and sodium borohydride (175 mg) were added at room temperature, and the mixture was stirred at the same temperature for 2 hours. To the reaction mixture, ethyl acetate and 1.0 mol/L aqueous sodium hydroxide were added. The organic layer was separated, washed with saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to obtain tert-butyl (4-(aminomethyl)tetrahydro-2H-pyran-4-yl)carbamate (G15, 195 mg). was added at room temperature the mixture was stirred at the same temperature for 2 hours The organic layer was separated washed with saturated aqueous sodium chloride dried over anhydrous sodium sulfate the solvent was evaporated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of tert-butyl (4-cyanotetrahydro-2H-pyran-4-yl)carbamate (G14, 210 mg) and cobalt(II) chloride (241 mg) in methanol (9 mL), sodium borohydride (175 mg) was added at room temperature, and the mixture was stirred at the same temperature for 1 hour. To the reaction mixture, cobalt(II) chloride (241 mg) and sodium borohydride (175 mg) were added at room temperature, and the mixture was stirred at the same temperature for 2 hours. To the reaction mixture, ethyl acetate and 1.0 mol/L aqueous sodium hydroxide were added. The organic layer was separated, washed with saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to obtain tert-butyl (4-(aminomethyl)tetrahydro-2H-pyran-4-yl)carbamate (G15, 195 mg). was added at room temperature the mixture was stirred at the same temperature for 2 hours The organic layer was separated washed with saturated aqueous sodium chloride dried over anhydrous sodium sulfate the solvent was evaporated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of tert-butyl (4-cyanotetrahydro-2H-pyran-4-yl)carbamate (59 g, 260 mmol) and Raney Nickel (25 g) in isopropanol and ammonia (700 mL) was stirred under a hydrogen atmosphere. After 36 hours, the solids were filtered and the filtrate was concentrated under reduced pressure. The residue was recrystallized from DCM (60 mL) to afford tert-butyl [4-(aminomethyl)tetrahydro-2H-pyran-4-yl]carbamate. MS ESI calc'd. for C11H23N2O3 [M+H]+ 231. found 231. 1H NMR (400 MHz, CDCl3) δ 4.42 (s, 1H), 3.77 (d, J=11.6 Hz, 2H), 3.66-3.60 (m, 2H), 2.94 (s, 2H), 1.97-1.94 (d, J=13.6 Hz, 2H), 1.57 (m, 2H), 1.44 (s, 9H), 1.28 (s, 2H). the solids were filtered the filtrate was concentrated under reduced pressure The residue was recrystallized from DCM (60 mL)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of tert-butyl (4-cyanotetrahydro-2H-pyran-4-yl)carbamate (59 g, 260 mmol) and Raney Nickel (25 g) in isopropanol and ammonia (700 mL) was stirred under a hydrogen atmosphere. After 36 hours, the solids were filtered and the filtrate was concentrated under reduced pressure. The residue was recrystallized from DCM (60 mL) to afford tert-butyl [4-(aminomethyl)tetrahydro-2H-pyran-4-yl]carbamate. MS ESI calc'd. for C11H23N2O3 [M+H]+ 231. found 231. 1H NMR (400 MHz, CDCl3) δ 4.42 (s, 1H), 3.77 (d, J=11.6 Hz, 2H), 3.66-3.60 (m, 2H), 2.94 (s, 2H), 1.97-1.94 (d, J=13.6 Hz, 2H), 1.57 (m, 2H), 1.44 (s, 9H), 1.28 (s, 2H). the solids were filtered the filtrate was concentrated under reduced pressure The residue was recrystallized from DCM (60 mL)