Ethyl 3-(methylamino)propanoate → HCID 68512571, compound

HRID 1877300Notes

Reaction equation

HRID 1877300 reaction equation
[CH:1]1([CH:7]([NH:21][C:22]2[CH:23]=[CH:24][C:25]([C:28](O)=[O:29])=[N:26][CH:27]=2)[C:8]2[CH:12]=[C:11]([C:13]3[CH:18]=[CH:17][C:16]([F:19])=[CH:15][CH:14]=3)[O:10][C:9]=2[CH3:20])[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].Cl.C(N=C=NCCCN(C)C)C.O.OC1C2N=NNC=2C=CC=1>CN(C)C=O.C(OCC)(=O)C.C(N(CC)CC)C>[CH:1]1([CH:7]([NH:21][C:22]2[CH:23]=[CH:24][C:25]([C:28]([N:32]([CH3:31])[CH2:33][CH2:34][C:35]([O:37][CH2:38][CH3:39])=[O:36])=[O:29])=[N:26][CH:27]=2)[C:8]2[CH:12]=[C:11]([C:13]3[CH:18]=[CH:17][C:16]([F:19])=[CH:15][CH:14]=3)[O:10][C:9]=2[CH3:20])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

8

Reactant 4

HCID 541480Ethyl 3-(methylamino)propanoateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 68512332HCID 68512332, compoundHCID 178526939HCID 178526939, compound

Product 1

HCID 68512571HCID 68512571, compoundYield 29.7%

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolventHCID 8471TriethylamineSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of 5-({cyclohexyl[5-(4-fluorophenyl)-2-methylfuran-3-yl]methyl}amino)pyridine-2-carboxylic acid (694 mg), ethyl 3-(methylamino)propanoate (223 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (326 mg), hydroxybenzotriazole monohydrate (260 mg) and triethylamine (237 μL) in N,N-dimethylformamide (10 mL) was stirred at room temperature for 4 hr. Ethyl acetate was added, the mixture was washed with saturated aqueous sodium hydrogen carbonate solution and water, and the organic layer was dried over magnesium sulfate. The solvent was evaporated under reduced pressure, and the organic layer was dried over magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel chromatography (5% ethyl acetate/hexane to 50% ethyl acetate/hexane) to give ethyl 3-[{[5-({cyclohexyl[5-(4-fluorophenyl)-2-methylfuran-3-yl]methyl}amino)pyridin-2-yl]carbonyl}(methyl)amino]propanoate (263 mg) as an amorphous compound. Ethyl 3-[{[5-({cyclohexyl[5-(4-fluorophenyl)-2-methylfuran-3-yl]methyl}amino)pyridin-2-yl]carbonyl}(methyl)amino]propanoate was dissolved in ethanol (2 mL), tetrahydrofuran (2 mL) and 1N lithium hydroxide (1.0 mL) were added, and the mixture was stirred at room temperature for 1 hr. The solvent was evaporated under reduced pressure, and water (10 mL) was added. The mixture was neutralized with 1N hydrochloric acid under ice-cooling, and stirred for 1 hr. The resulting precipitate was collected by filtration and dried to give the title compound (246 mg, 30%).

Workup

  1. washthe mixture was washed with saturated aqueous sodium hydrogen carbonate solution and water
  2. dry with materialthe organic layer was dried over magnesium sulfate
  3. customThe solvent was evaporated under reduced pressure
  4. dry with materialthe organic layer was dried over magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. customThe residue was purified by silica gel chromatography (5% ethyl acetate/hexane to 50% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-6c3295cfc6684e8b99bd655d6d027d16
Source dataset
uspto-grants-2012_11
Patent number
US08309580B2

Reaction notes

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