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

HRID 2091244Notes

Reaction equation

HRID 2091244 reaction equation
[CH3:1][O:2][CH2:3][CH2:4][CH2:5][CH2:6][CH:7]([NH:20][C:21]1[CH:29]=[CH:28][C:24]([C:25](O)=[O:26])=[CH:23][CH:22]=1)[C:8]1[O:9][C:10]2[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][C:11]=2[C:12]=1[CH3:13].Cl.[CH2:31]([O:33][C:34](=[O:38])[CH2:35][CH2:36][NH2:37])[CH3:32].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][CH2:3][CH2:4][CH2:5][CH2:6][CH:7]([NH:20][C:21]1[CH:29]=[CH:28][C:24]([C:25]([NH:37][CH2:36][CH2:35][C:34]([O:33][CH2:31][CH3:32])=[O:38])=[O:26])=[CH:23][CH:22]=1)[C:8]1[O:9][C:10]2[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][C:11]=2[C:12]=1[CH3:13]

Participants

8

Reactant 5

HCID 25517Ammonium ChlorideHCID 458475beta-Alanine, ethyl ester, hydrochlorideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 667778864-{[5-Methoxy-1-(5-methoxy-3-methyl-1-benzofuran-2-yl)pentyl]amino}benzoic acid

Product 1

HCID 66778102Ethyl 3-{[(4-{[5-methoxy-1-(5-methoxy-3-methyl-1-benzofuran-2-yl)pentyl]amino}phenyl)carbonyl]amino}propanoateYield 97.8%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a mixture of 4-{[5-methoxy-1-(5-methoxy-3-methyl-1-benzofuran-2-yl)pentyl]amino}benzoic acid (400 mg) synthesized above, β-alanine ethyl ester hydrochloride (234 mg), 1-hydroxybenzotriazole monohydrate (233 mg), triethylamine (422 μL) and N,N-dimethylformamide (10 mL) was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (291 mg), and the mixture was stirred at room temperature for 2.5 days. 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 (40-80% ethyl acetate/hexane) to give the title object compound (489 mg, 97%) 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 (40-80% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-bed05eb9a4924403abca60bb38bc3905
Source dataset
uspto-grants-2013_05
Patent number
US08436043B2

Reaction notes

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