Hydrochloric Acid → Ethyl 3-{[(4-{[cyclohexyl(6-fluoro-3-methyl-1-benzofuran-2-yl)methyl]amino}phenyl)carbonyl]amino}propanoate

HRID 2091148Notes

Reaction equation

HRID 2091148 reaction equation
[CH:1]1([CH:7]([NH:19][C:20]2[CH:28]=[CH:27][C:23]([C:24](O)=[O:25])=[CH:22][CH:21]=2)[C:8]2[O:9][C:10]3[CH:17]=[C:16]([F:18])[CH:15]=[CH:14][C:11]=3[C:12]=2[CH3:13])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.Cl.[CH2:30]([O:32][C:33](=[O:37])[CH2:34][CH2:35][NH2:36])[CH3:31].O.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C.Cl>CN(C)C=O.C(N(CC)CC)C>[CH:1]1([CH:7]([NH:19][C:20]2[CH:28]=[CH:27][C:23]([C:24]([NH:36][CH2:35][CH2:34][C:33]([O:32][CH2:30][CH3:31])=[O:37])=[O:25])=[CH:22][CH:21]=2)[C:8]2[O:9][C:10]3[CH:17]=[C:16]([F:18])[CH:15]=[CH:14][C:11]=3[C:12]=2[CH3:13])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

8

Reactant 5

HCID 313Hydrochloric AcidHCID 458475beta-Alanine, ethyl ester, hydrochlorideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 667780194-{[Cyclohexyl(6-fluoro-3-methyl-1-benzofuran-2-yl)methyl]amino}benzoic acid

Product 1

HCID 66778097Ethyl 3-{[(4-{[cyclohexyl(6-fluoro-3-methyl-1-benzofuran-2-yl)methyl]amino}phenyl)carbonyl]amino}propanoateYield 91.4%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a mixture of 4-{[cyclohexyl(6-fluoro-3-methyl-1-benzofuran-2-yl)methyl]amino}benzoic acid (350 mg) synthesized above, β-alanine ethyl ester hydrochloride (212 mg), 1-hydroxybenzotriazole monohydrate (211 mg), triethylamine (383 μL) and N,N-dimethylformamide (10 mL) was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (265 mg), and the mixture was stirred overnight at room temperature. 1N Hydrochloric acid was added to quench the reaction, and the 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 (50% ethyl acetate/hexane) to give the title object compound (403 mg, 91%) as a pale-yellow oil.

Workup

  1. customto quench
  2. customthe reaction
  3. extractionthe 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 (50% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-0dfb630c7d374d68bfc94ffa7ea4531a
Source dataset
uspto-grants-2013_05
Patent number
US08436043B2

Reaction notes

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