Iodoethane → (3-amino-1-ethyl-1H-pyrazol-4-yl)-phenyl-methanone

HRID 494369Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 494369
[NH2:1][C:2]1[C:6]([C:7]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)=[O:8])=[CH:5][NH:4][N:3]=1.[H-].[Na+].[CH2:17](I)[CH3:18]>CN(C=O)C.C(OCC)(=O)C>[NH2:1][C:2]1[C:6]([C:7]([C:9]2[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=2)=[O:8])=[CH:5][N:4]([CH2:17][CH3:18])[N:3]=1

Komponenten

6

Edukt 3

HCID 6340IodoethaneHCID 24758Sodium hydrideHCID 178509267HCID 178509267, Verbindung

Produkt 1

HCID 68866724(3-amino-1-ethyl-1H-pyrazol-4-yl)-phenyl-methanone

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To a vigorously stirring solution of (3-amino-1H-pyrazol-4-yl)-phenyl-methanone (0.1 g, 0.53 mmol) in dry DMF at RT is added sodium hydride (0.023 g, 0.57 mmol). After 1 h, ethyl iodide (0.042 mL, 0.53 mmol) is added and stirring is continued for 4 h. The reaction mixture is diluted with ethyl acetate, washed with water, brine and dried over anhydrous sodium sulfate. The organic filtrate is concentrated and the crude is chromatographed on silica gel using 50% ethyl acetate in hexanes to provide (3-amino-1-ethyl-1H-pyrazol-4-yl)-phenyl-methanone.

Aufarbeitung

  1. waitis continued for 4 h
  2. washwashed with water, brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationThe organic filtrate is concentrated
  5. customthe crude is chromatographed on silica gel using 50% ethyl acetate in hexanes

Quellen und Nachweise

ORD-Eintrag
ord-8126096e5b3b44298db9109978e0fb0d
Quelldatensatz
uspto-grants-2009_05
Patentnummer
US07538135B2

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