tert-butyl N-[(2S)-1-aminobutan-2-yl]carbamate

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

实验步骤: To an ice cold solution of (S)-tert-butyl(1-aminobutan-2-yl)carbamate (1.0 g, 5.4 mmol) and triethylamine (0.78 mL, 5.6 mmol) in DCM (33 mL) was added methyl chlorooxoacetate (0.52 mL, 5.6 mmol) dropwise. Following the addition, the reaction was allowed to warm to rt and stirred overnight. Brine was added, the layers were separated, and the aqueous layer was washed with DCM. The combined organic extracts were dried (Na2SO4), filtered, and concentrated to provide a yellow oil (1.4 g, 96%), which was used without further purification. 1H NMR (500 MHz, CDCl3) δ 7.78 (s, 1H), 4.59 (d, J=7.6 Hz, 1H), 3.92-3.81 (m, 3H), 3.69 (s, 1H) 3.45 (dt, J=13.5, 4.2 Hz, 1H), 3.39-3.22 (m, 1H), 1.47-1.38 (m, 11H), 0.98 (t, J=7.5 Hz, 3H). the addition the layers were separated the aqueous layer was washed with DCM The combined organic extracts were dried (Na2SO4) filtered concentrated

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

实验步骤: To an ice cold solution of (S)-tert-butyl(1-aminobutan-2-yl)carbamate (1.0 g, 5.4 mmol) and triethylamine (0.78 mL, 5.6 mmol) in DCM (33 mL) was added methyl chlorooxoacetate (0.52 mL, 5.6 mmol) dropwise. Following the addition, the reaction was allowed to warm to rt and stirred overnight. Brine was added, the layers were separated, and the aqueous layer was washed with DCM. The combined organic extracts were dried (Na2SO4), filtered, and concentrated to provide a yellow oil (1.4 g, 96%), which was used without further purification. 1H NMR (500 MHz, CDCl3) δ 7.78 (s, 1H), 4.59 (d, J=7.6 Hz, 1H), 3.92-3.81 (m, 3H), 3.69 (s, 1H) 3.45 (dt, J=13.5, 4.2 Hz, 1H), 3.39-3.22 (m, 1H), 1.47-1.38 (m, 11H), 0.98 (t, J=7.5 Hz, 3H). the addition the layers were separated the aqueous layer was washed with DCM The combined organic extracts were dried (Na2SO4) filtered concentrated

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

实验步骤: A mixture of (S)-tert-butyl(1-azidobutan-2-yl)carbamate (7 g, 33 mmol) and 10% Pd/C (777 mg, 0.73 mmol) in EtOAc (150 mL) was stirred under hydrogen (60 psi) for 2 h. The reaction mixture was filtered through Celite and concentrated to give the desired product as a white semi-solid. 1H NMR (400 MHz, DMSO-d6) δ 6.50 (d, J=8.7 Hz, 1H), 3.23-3.12 (m, 1H), 2.45 (d, J=6.0 Hz, 2H), 1.51-1.40 (m, 1H), 1.38 (s, 9H), 1.32-1.20 (m, 3H), 0.80 (t, J=7.4 Hz, 3H). The reaction mixture was filtered through Celite concentrated

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

实验步骤: To an ice cold solution of (S)-tert-butyl(1-aminobutan-2-yl)carbamate (1.0 g, 5.4 mmol) and triethylamine (0.78 mL, 5.6 mmol) in DCM (33 mL) was added methyl chlorooxoacetate (0.52 mL, 5.6 mmol) dropwise. Following the addition, the reaction was allowed to warm to rt and stirred overnight. Brine was added, the layers were separated, and the aqueous layer was washed with DCM. The combined organic extracts were dried (Na2SO4), filtered, and concentrated to provide a yellow oil (1.4 g, 96%), which was used without further purification. 1H NMR (500 MHz, CDCl3) δ 7.78 (s, 1H), 4.59 (d, J=7.6 Hz, 1H), 3.92-3.81 (m, 3H), 3.69 (s, 1H) 3.45 (dt, J=13.5, 4.2 Hz, 1H), 3.39-3.22 (m, 1H), 1.47-1.38 (m, 11H), 0.98 (t, J=7.5 Hz, 3H). the addition the layers were separated the aqueous layer was washed with DCM The combined organic extracts were dried (Na2SO4) filtered concentrated

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

实验步骤: A mixture of (S)-tert-butyl(1-azidobutan-2-yl)carbamate (7 g, 33 mmol) and 10% Pd/C (777 mg, 0.73 mmol) in EtOAc (150 mL) was stirred under hydrogen (60 psi) for 2 h. The reaction mixture was filtered through Celite and concentrated to give the desired product as a white semi-solid. 1H NMR (400 MHz, DMSO-d6) δ 6.50 (d, J=8.7 Hz, 1H), 3.23-3.12 (m, 1H), 2.45 (d, J=6.0 Hz, 2H), 1.51-1.40 (m, 1H), 1.38 (s, 9H), 1.32-1.20 (m, 3H), 0.80 (t, J=7.4 Hz, 3H). The reaction mixture was filtered through Celite concentrated