3-Methoxy-4-nitrobenzoic acid → N-(3-Methoxy-4-nitrobenzoyl)serine methyl ester

HRID 43594

Reaction equation

HRID 43594 reaction equation
Cl.[CH3:2][O:3][C:4](=[O:9])[C@H:5]([CH2:7][OH:8])[NH2:6].[CH3:10][O:11][C:12]1[CH:13]=[C:14]([CH:18]=[CH:19][C:20]=1[N+:21]([O-:23])=[O:22])[C:15](O)=[O:16].CCN=C=NCCCN(C)C.Cl.C(N(CC)C(C)C)(C)C>CN(C1C=CN=CC=1)C.ClCCl>[CH3:2][O:3][C:4](=[O:9])[C@H:5]([CH2:7][OH:8])[NH:6][C:15](=[O:16])[C:14]1[CH:18]=[CH:19][C:20]([N+:21]([O-:23])=[O:22])=[C:12]([O:11][CH3:10])[CH:13]=1

Participants

7

Reactant 4

HCID 787643-Methoxy-4-nitrobenzoic acidHCID 81531DiisopropylethylamineHCID 2723730L-Serine, methyl ester, hydrochloride (1:1)HCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride

Product 1

HCID 67548939N-(3-Methoxy-4-nitrobenzoyl)serine methyl esterYield 69%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

Dichloromethane (80 mL) was added to serine methyl ester hydrochloride (2.64 g, 17 mmol), 3-methoxy-4-nitrobenzoic acid (3 g, 15.2 mmol), WSC hydrochloride (3.83 g, 20 mmol), DMAP (0.18 g, 1.5 mmol) and N,N-diisopropylethylamine (2.58 g, 20 mmol), and the mixture was stirred at room temperature for one day. The reaction solution was washed with water and brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/2, 1/1, 2/1, 1/0) to obtain 3.11 g of the title compound as a colorless solid (69%).

Workup

  1. washThe reaction solution was washed with water and brine
  2. dry with materialdried over anhydrous magnesium sulfate
  3. concentrationconcentrated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/2, 1/1, 2/1, 1/0)

Sources & evidence

ORD record
ord-44b331cbf319449888b2dd62743014fb
Source dataset
uspto-grants-2013_09
Patent number
US08536197B2

Linked notes

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