Ammonium Chloride → Ethyl 3-{[(4-{[1-(5-methoxy-3-methyl-1-benzofuran-2-yl)-5-(methylsulfanyl)pentyl]amino}phenyl)carbonyl](methyl)amino}-propanoate

HRID 2091238Notes

Reaction equation

HRID 2091238 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[O:10][C:9]([CH:11]([NH:18][C:19]3[CH:27]=[CH:26][C:22]([C:23](O)=[O:24])=[CH:21][CH:20]=3)[CH2:12][CH2:13][CH2:14][CH2:15][S:16][CH3:17])=[C:8]([CH3:28])[C:7]=2[CH:29]=1.[CH3:30][NH:31][CH2:32][CH2:33][C:34]([O:36][CH2:37][CH3:38])=[O:35].O.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C.[Cl-].[NH4+]>CN(C)C=O.C(N(CC)CC)C>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[O:10][C:9]([CH:11]([NH:18][C:19]3[CH:27]=[CH:26][C:22]([C:23]([N:31]([CH3:30])[CH2:32][CH2:33][C:34]([O:36][CH2:37][CH3:38])=[O:35])=[O:24])=[CH:21][CH:20]=3)[CH2:12][CH2:13][CH2:14][CH2:15][S:16][CH3:17])=[C:8]([CH3:28])[C:7]=2[CH:29]=1

Participants

8

Reactant 5

HCID 25517Ammonium ChlorideHCID 541480Ethyl 3-(methylamino)propanoateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 667778094-{[1-(5-Methoxy-3-methyl-1-benzofuran-2-yl)-5-(methylsulfanyl)pentyl]amino}benzoic acid

Product 1

HCID 66777700Ethyl 3-{[(4-{[1-(5-methoxy-3-methyl-1-benzofuran-2-yl)-5-(methylsulfanyl)pentyl]amino}phenyl)carbonyl](methyl)amino}-propanoateYield 88%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a mixture of 4-{[1-(5-methoxy-3-methyl-1-benzofuran-2-yl)-5-(methylsulfanyl)pentyl]amino}benzoic acid (460 mg) synthesized in Example A120(4), ethyl 3-(methylamino)propanoate (219 mg), 1-hydroxybenzotriazole monohydrate (256 mg), triethylamine (464 μL) and N,N-dimethylformamide (10 mL) was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (320 mg), and the mixture was stirred overnight at room temperature. Saturated aqueous ammonium chloride solution was added to quench the reaction, and the reaction mixture was extracted with ethyl acetate. The extract was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (30-50% ethyl acetate/hexane) to give the title object compound (514 mg, 88%) as a pale-brown oil

Workup

  1. customto quench
  2. customthe reaction
  3. extractionthe reaction mixture was extracted with ethyl acetate
  4. washThe extract was washed with saturated aqueous sodium hydrogen carbonate solution and saturated brine
  5. dry with materialdried over magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (30-50% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-2a03d9c6c7f54a23940c1dbb31d921a8
Source dataset
uspto-grants-2013_05
Patent number
US08436043B2

Reaction notes

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