Hydrochloric Acid → Ethyl 3-{[(4-{[cyclohexyl(3-methyl-5-nitro-1-benzofuran-2-yl)methyl]amino}phenyl)carbonyl](methyl)amino}propanoate

HRID 2091203Notes

Reaction equation

HRID 2091203 reaction equation
[CH:1]1([CH:7]([NH:21][C:22]2[CH:30]=[CH:29][C:25]([C:26](O)=[O:27])=[CH:24][CH:23]=2)[C:8]2[O:9][C:10]3[CH:17]=[CH:16][C:15]([N+:18]([O-:20])=[O:19])=[CH:14][C:11]=3[C:12]=2[CH3:13])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH3:31][NH:32][CH2:33][CH2:34][C:35]([O:37][CH2:38][CH3:39])=[O:36].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:21][C:22]2[CH:23]=[CH:24][C:25]([C:26]([N:32]([CH3:31])[CH2:33][CH2:34][C:35]([O:37][CH2:38][CH3:39])=[O:36])=[O:27])=[CH:29][CH:30]=2)[C:8]2[O:9][C:10]3[CH:17]=[CH:16][C:15]([N+:18]([O-:20])=[O:19])=[CH:14][C:11]=3[C:12]=2[CH3:13])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

Participants

8

Reactant 5

HCID 313Hydrochloric AcidHCID 541480Ethyl 3-(methylamino)propanoateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 667777714-{[Cyclohexyl(3-methyl-5-nitro-1-benzofuran-2-yl)methyl]amino}benzoic acid

Product 1

HCID 66777059Ethyl 3-{[(4-{[cyclohexyl(3-methyl-5-nitro-1-benzofuran-2-yl)methyl]amino}phenyl)carbonyl](methyl)amino}propanoateYield 72%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a mixture of 4-{[cyclohexyl(3-methyl-5-nitro-1-benzofuran-2-yl)methyl]amino}benzoic acid (1.54 g) synthesized above, ethyl 3-(methylamino)propanoate (593 mg), 1-hydroxybenzotriazole monohydrate (692 mg), triethylamine (1.26 mL) and N,N-dimethylformamide (15 mL) was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (867 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 (1.41 g, 72%) as a yellow solid.

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-8c9825afd7b844109a4aa9b374667d7c
Source dataset
uspto-grants-2013_05
Patent number
US08436043B2

Reaction notes

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