Benzylamine → N-benzyl-5-oxo-D-prolinamide

HRID 1409034Notes

Reaction equation

HRID 1409034 reaction equation
[O:1]=[C:2]1[NH:6][C@@H:5]([C:7]([OH:9])=O)[CH2:4][CH2:3]1.[CH2:10]([NH2:17])[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.Cl.C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1>C(#N)C.C(OCC)(=O)C>[CH2:10]([NH:17][C:7](=[O:9])[C@H:5]1[CH2:4][CH2:3][C:2](=[O:1])[NH:6]1)[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1

Participants

7

Reactant 4

HCID 7504BenzylamineHCID 757711-HydroxybenzotriazoleHCID 439685D-Pyroglutamic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride

Product 1

HCID 7034154N-benzyl-5-oxo-D-prolinamide

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 8857Ethyl AcetateSolvent

Procedure

5-Oxo-D-proline (5.0 g), benzylamine (4.65 mL), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (8.5 g) and 1-hydroxybenzotriazole (6.3 g) were mixed in acetonitrile (100 mL) under ice-cooling, and the mixture was allowed to warm to room temperature and stirred for 3 hr. The mixture was diluted with ethyl acetate (200 mL), and washed successively with 1M hydrochloric acid (50 mL), saturated aqueous sodium hydrogen carbonate solution (50 mL) and brine (50 mL). The organic layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The precipitated solid was collected by filtration, washed with diethyl ether, and dried under reduced pressure to give the title compound (4.02 g) as a white powder.

Workup

  1. temperaturecooling
  2. washwashed successively with 1M hydrochloric acid (50 mL), saturated aqueous sodium hydrogen carbonate solution (50 mL) and brine (50 mL)
  3. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. filtrationThe precipitated solid was collected by filtration
  6. washwashed with diethyl ether
  7. customdried under reduced pressure

Sources & evidence

ORD record
ord-e8e4c35e90e24192babd3257f10daa2e
Source dataset
uspto-grants-2014_12
Patent number
US08921354B2

Reaction notes

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