3-Amino-1-propanol → N-((1R)-1-(3-hydroxypropylcarbamoyl)-2-phenylethyl)-N-methylcarbamic acid tert-butylester

HRID 1268592Notes

Reaction equation

HRID 1268592 reaction equation
[NH2:1][CH2:2][CH2:3][CH2:4][OH:5].[C:6]([O:10][C:11]([N:13]([CH3:25])[C@@H:14]([C:22](O)=[O:23])[CH2:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)=[O:12])([CH3:9])([CH3:8])[CH3:7].O.ON1C2C=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC>CN(C)C=O.S([O-])(O)(=O)=O.[Na+]>[C:6]([O:10][C:11](=[O:12])[N:13]([C@@H:14]([C:22](=[O:23])[NH:1][CH2:2][CH2:3][CH2:4][OH:5])[CH2:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)[CH3:25])([CH3:7])([CH3:9])[CH3:8]

Participants

7

Reactant 4

HCID 90863-Amino-1-propanolHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 7015127N-Boc-N-methyl-D-phenylalanine

Product 1

HCID 54054214N-((1R)-1-(3-hydroxypropylcarbamoyl)-2-phenylethyl)-N-methylcarbamic acid tert-butylesterYield 64.6%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 516919Sodium BisulfateSolvent

Procedure

3-Aminopropan-1-ol (0.39 mL, 5.12 mmol) was added at room temperature to a solution of N-tert-butoxycarbonyl-N-methyl-D-phenylalanine (1.30 g, 4.65 mmol) in N,N-dimethylformamide (40 mL). 1-Hydroxybenzotriazole monohydrate (0.63 g, 4.65 mmol) and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (0.89 g, 4.65 mmol) were added successively. The reaction mixture was stirred for 22 h at room temperature. It was diluted with 10% sodium hydrogensulfate solution (300 mL) and extracted with ethyl acetate (4×100 mL). The combined organic layers were dried over magnesium sulfate. The solvent was removed in vacuo and the crude product was purified by flash chromatography on silica (45 g) with dichloromethane/methanol (10:1) to give 1.01 g of N-((1R)-1-(3-hydroxypropylcarbamoyl)-2-phenylethyl)-N-methylcarbamic acid tert-butylester.

Workup

  1. extractionextracted with ethyl acetate (4×100 mL)
  2. dry with materialThe combined organic layers were dried over magnesium sulfate
  3. customThe solvent was removed in vacuo
  4. customthe crude product was purified by flash chromatography on silica (45 g) with dichloromethane/methanol (10:1)

Sources & evidence

ORD record
ord-ee0037a3a7c24ae8bbd40b10397c65b9
Source dataset
uspto-grants-2003_04
Patent number
US06555570B2

Reaction notes

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