4-(1H-imidazol-1-yl)aniline → N-[4-(1-imidazolyl)phenyl]-3-(5-phenyl-4-isoxazolyl)propionamide

HRID 1794381

Reaction equation

HRID 1794381 reaction equation
[N:1]1([C:6]2[CH:12]=[CH:11][C:9]([NH2:10])=[CH:8][CH:7]=2)[CH:5]=[CH:4][N:3]=[CH:2]1.[C:13]1([C:19]2[O:23][N:22]=[CH:21][C:20]=2[CH2:24][CH2:25][C:26](O)=[O:27])[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.O.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C>O.CN(C)C=O>[N:1]1([C:6]2[CH:12]=[CH:11][C:9]([NH:10][C:26](=[O:27])[CH2:25][CH2:24][C:20]3[CH:21]=[N:22][O:23][C:19]=3[C:13]3[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=3)=[CH:8][CH:7]=2)[CH:5]=[CH:4][N:3]=[CH:2]1

Participants

7

Reactant 4

HCID 3201654-(1H-imidazol-1-yl)anilineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 222212543-(5-Phenyl-4-isoxazolyl)propionic acid

Product 1

HCID 22221273N-[4-(1-imidazolyl)phenyl]-3-(5-phenyl-4-isoxazolyl)propionamideYield 83%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

A mixture of 4-(1-imidazolyl)aniline (0.51 g), 3-(5-phenyl-4-isoxazolyl)propionic acid (0.70 g), 1-hydroxy-1H-1,2,3-benzotriazole hydrate (0.60 g), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.75 g) and N,N-dimethylformamide (20 ml) was stirred at room temperature overnight. The reaction mixture was poured into water and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with dilute hydrochloric acid, saturated aqueous sodium hydrogencarbonate and then saturated brine, dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and N-[4-(1-imidazolyl)phenyl]-3-(5-phenyl-4-isoxazolyl)propionamide (0.95 g, yield 83%) was obtained as colorless crystals from a fraction eluted with ethyl acetate-hexane (1:1, volume ratio). The crystals were recrystallized from ethyl acetate-hexane. melting point: 176–177° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with dilute hydrochloric acid, saturated aqueous sodium hydrogencarbonate
  3. dry with materialsaturated brine, dried (MgSO4)
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-0e3f24c3c46c4b4d9f59a62d5bbf003b
Source dataset
uspto-grants-2006_04
Patent number
US07022725B2

Linked notes

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