tert-butyl N-[3-amino-1-(4-chlorophenyl)propyl]carbamate

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Methanesulfonyl chloride (0.082 mL, 1.05 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (300 mg, 1.05 mmol) and N,N-diisopropylethylamine (0.367 mL, 2.11 mmol) in DCM (4 mL) at 20° C. The resulting solution was stirred at 20° C. for 18 hours. The reaction mixture was concentrated and diluted with Et2O (25 mL) and washed with water (25 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 20% EtOAc in DCM. Pure fractions were evaporated to dryness to afford tert-butyl 1-(4-chlorophenyl)-3-(methylsulfonamido)propylcarbamate (275 mg, 71.9%) as a white solid. The reaction mixture was concentrated diluted with Et2O (25 mL) washed with water (25 mL) The organic layer was dried over MgSO4 filtered evaporated to afford crude product The crude product was purified by flash silica chromatography, elution gradient 0 to 20% EtOAc in DCM Pure fractions were evaporated to dryness

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Phenyl chloroformate (0.132 mL, 1.05 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (300 mg, 1.05 mmol) and sodium bicarbonate (133 mg, 1.58 mmol) in dioxane (10 mL) at 20° C. under nitrogen. The resulting solution was stirred at 20° C. for 2 hours. The reaction mixture was concentrated and diluted with EtOAc (20 mL) and washed with water (20 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford tert-butyl N-[1-(4-chlorophenyl)-3-(phenoxycarbonylamino)-propyl]carbamate (427 mg, 100%) as a gum. The reaction mixture was concentrated diluted with EtOAc (20 mL) washed with water (20 mL) The organic layer was dried over MgSO4 filtered evaporated

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Acetic anhydride (0.084 mL, 0.89 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (203 mg, 0.71 mmol) and N,N-diisopropylethylamine (0.248 mL, 1.43 mmol) in DCM (5 mL) at 20° C. The resulting solution was stirred at 20° C. for 16 hours. The reaction mixture was quenched with NaHCO3 (2M) (10 mL) and water (10 mL) and extracted with DCM (20 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 2.5% MeOH in DCM. Pure fractions were evaporated to dryness to afford tert-butyl 3-acetamido-1-(4-chlorophenyl)propylcarbamate (142 mg, 61.0%) as a white solid. 1H NMR (399.9 MHz, DMSO-d6) δ1.36 (9H, s), 1.67-1.82 (2H, m), 1.79 (3H, s), 2.97 (2H, q), 4.50 (1H, d), 7.32 (2H, d), 7.38 (2H, d), 7.43-7.45 (1H, m), 7.79 (1H, s). m/z (ESI+) (M+H)+=327; HPLC tR=2.03 min. The reaction mixture was quenched with NaHCO3 (2M) (10 mL) and water (10 mL) extracted with DCM (20 mL) The organic layer was dried over MgSO4 filtered evaporated to afford crude product The crude product was purified by flash silica chromatography, elution gradient 0 to 2.5% MeOH in DCM Pure fractions were evaporated to dryness

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Lithium aluminium hydride (0.712 mL, 0.71 mmol) was added dropwise to tert-butyl 1-(4-chlorophenyl)-2-cyanoethylcarbamate (Intermediate 24) (200 mg, 0.71 mmol) in THF (4 mL) at 20° C. under nitrogen. The resulting solution was stirred at 20° C. for 2 hours. The reaction mixture was quenched with NaOH (1M) (1 mL) and the solution was filtered. The solution was diluted with EtOAc (20 mL), and washed with water 2× (10 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (203 mg, 100%) as a gum. m/z (ESI+) (M+H)+=285; HPLC tR=2.33 min. The reaction mixture was quenched with NaOH (1M) (1 mL) the solution was filtered The solution was diluted with EtOAc (20 mL) washed with water 2× (10 mL) The organic layer was dried over MgSO4 filtered evaporated

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Methanesulfonyl chloride (0.082 mL, 1.05 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (300 mg, 1.05 mmol) and N,N-diisopropylethylamine (0.367 mL, 2.11 mmol) in DCM (4 mL) at 20° C. The resulting solution was stirred at 20° C. for 18 hours. The reaction mixture was concentrated and diluted with Et2O (25 mL) and washed with water (25 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 20% EtOAc in DCM. Pure fractions were evaporated to dryness to afford tert-butyl 1-(4-chlorophenyl)-3-(methylsulfonamido)propylcarbamate (275 mg, 71.9%) as a white solid. The reaction mixture was concentrated diluted with Et2O (25 mL) washed with water (25 mL) The organic layer was dried over MgSO4 filtered evaporated to afford crude product The crude product was purified by flash silica chromatography, elution gradient 0 to 20% EtOAc in DCM Pure fractions were evaporated to dryness

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Methanesulfonyl chloride (0.082 mL, 1.05 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (300 mg, 1.05 mmol) and N,N-diisopropylethylamine (0.367 mL, 2.11 mmol) in DCM (4 mL) at 20° C. The resulting solution was stirred at 20° C. for 18 hours. The reaction mixture was concentrated and diluted with Et2O (25 mL) and washed with water (25 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 20% EtOAc in DCM. Pure fractions were evaporated to dryness to afford tert-butyl 1-(4-chlorophenyl)-3-(methylsulfonamido)propylcarbamate (275 mg, 71.9%) as a white solid. The reaction mixture was concentrated diluted with Et2O (25 mL) washed with water (25 mL) The organic layer was dried over MgSO4 filtered evaporated to afford crude product The crude product was purified by flash silica chromatography, elution gradient 0 to 20% EtOAc in DCM Pure fractions were evaporated to dryness

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Phenyl chloroformate (0.132 mL, 1.05 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (300 mg, 1.05 mmol) and sodium bicarbonate (133 mg, 1.58 mmol) in dioxane (10 mL) at 20° C. under nitrogen. The resulting solution was stirred at 20° C. for 2 hours. The reaction mixture was concentrated and diluted with EtOAc (20 mL) and washed with water (20 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford tert-butyl N-[1-(4-chlorophenyl)-3-(phenoxycarbonylamino)-propyl]carbamate (427 mg, 100%) as a gum. The reaction mixture was concentrated diluted with EtOAc (20 mL) washed with water (20 mL) The organic layer was dried over MgSO4 filtered evaporated

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Phenyl chloroformate (0.132 mL, 1.05 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (300 mg, 1.05 mmol) and sodium bicarbonate (133 mg, 1.58 mmol) in dioxane (10 mL) at 20° C. under nitrogen. The resulting solution was stirred at 20° C. for 2 hours. The reaction mixture was concentrated and diluted with EtOAc (20 mL) and washed with water (20 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford tert-butyl N-[1-(4-chlorophenyl)-3-(phenoxycarbonylamino)-propyl]carbamate (427 mg, 100%) as a gum. The reaction mixture was concentrated diluted with EtOAc (20 mL) washed with water (20 mL) The organic layer was dried over MgSO4 filtered evaporated

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Acetic anhydride (0.084 mL, 0.89 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (203 mg, 0.71 mmol) and N,N-diisopropylethylamine (0.248 mL, 1.43 mmol) in DCM (5 mL) at 20° C. The resulting solution was stirred at 20° C. for 16 hours. The reaction mixture was quenched with NaHCO3 (2M) (10 mL) and water (10 mL) and extracted with DCM (20 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 2.5% MeOH in DCM. Pure fractions were evaporated to dryness to afford tert-butyl 3-acetamido-1-(4-chlorophenyl)propylcarbamate (142 mg, 61.0%) as a white solid. 1H NMR (399.9 MHz, DMSO-d6) δ1.36 (9H, s), 1.67-1.82 (2H, m), 1.79 (3H, s), 2.97 (2H, q), 4.50 (1H, d), 7.32 (2H, d), 7.38 (2H, d), 7.43-7.45 (1H, m), 7.79 (1H, s). m/z (ESI+) (M+H)+=327; HPLC tR=2.03 min. The reaction mixture was quenched with NaHCO3 (2M) (10 mL) and water (10 mL) extracted with DCM (20 mL) The organic layer was dried over MgSO4 filtered evaporated to afford crude product The crude product was purified by flash silica chromatography, elution gradient 0 to 2.5% MeOH in DCM Pure fractions were evaporated to dryness

反应条件: temp:20.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Acetic anhydride (0.084 mL, 0.89 mmol) was added dropwise to tert-butyl 3-amino-1-(4-chlorophenyl)propylcarbamate (Intermediate 25) (203 mg, 0.71 mmol) and N,N-diisopropylethylamine (0.248 mL, 1.43 mmol) in DCM (5 mL) at 20° C. The resulting solution was stirred at 20° C. for 16 hours. The reaction mixture was quenched with NaHCO3 (2M) (10 mL) and water (10 mL) and extracted with DCM (20 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 2.5% MeOH in DCM. Pure fractions were evaporated to dryness to afford tert-butyl 3-acetamido-1-(4-chlorophenyl)propylcarbamate (142 mg, 61.0%) as a white solid. 1H NMR (399.9 MHz, DMSO-d6) δ1.36 (9H, s), 1.67-1.82 (2H, m), 1.79 (3H, s), 2.97 (2H, q), 4.50 (1H, d), 7.32 (2H, d), 7.38 (2H, d), 7.43-7.45 (1H, m), 7.79 (1H, s). m/z (ESI+) (M+H)+=327; HPLC tR=2.03 min. The reaction mixture was quenched with NaHCO3 (2M) (10 mL) and water (10 mL) extracted with DCM (20 mL) The organic layer was dried over MgSO4 filtered evaporated to afford crude product The crude product was purified by flash silica chromatography, elution gradient 0 to 2.5% MeOH in DCM Pure fractions were evaporated to dryness