Methyl iodide → 4-(3-Bromo-4-fluorophenyl)-3-[4-(methylamino)-1,2,5-oxadiazol-3-yl]-1,2,4-oxadiazol-5(4H)-one

HRID 1663487Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1663487
[Br:1][C:2]1[CH:3]=[C:4]([N:9]2[C:13](=[O:14])[O:12][N:11]=[C:10]2[C:15]2[C:16]([NH:20][C:21](=O)C(F)(F)F)=[N:17][O:18][N:19]=2)[CH:5]=[CH:6][C:7]=1[F:8].C(=O)([O-])[O-].[K+].[K+].CI>CN(C)C=O.O.[Cl-].[Na+].O>[Br:1][C:2]1[CH:3]=[C:4]([N:9]2[C:13](=[O:14])[O:12][N:11]=[C:10]2[C:15]2[C:16]([NH:20][CH3:21])=[N:17][O:18][N:19]=2)[CH:5]=[CH:6][C:7]=1[F:8]

Komponenten

7

Edukt 3

HCID 6328Methyl iodide2×HCID 11430Potassium CarbonateHCID 58755133N-[4-[4-(3-Bromo-4-fluorophenyl)-5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl]-1,2,5-oxadiazol-3-yl]-2,2,2-trifluoroacetamide

Produkt 1

HCID 585582554-(3-Bromo-4-fluorophenyl)-3-[4-(methylamino)-1,2,5-oxadiazol-3-yl]-1,2,4-oxadiazol-5(4H)-oneAusbeute 84,2 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittelHCID 57417360Sodium chloride; waterLösungsmittel

Versuchsvorschrift

A solution of N-{4-[4-(3-bromo-4-fluorophenyl)-5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl]-1,2,5-oxadiazol-3-yl}-2,2,2-trifluoroacetamide (0.59 mg, 1.3 mmol) in N,N-dimethylformamide (3 mL) was treated with potassium carbonate (0.28 g, 2.0 mmol) followed by methyl iodide (125 μL, 2 mmol) and stirred for 2 h. The reaction mixture was treated with additional methyl iodide (200 μL, 3.2 mmol) and stirred for 16 h. The reaction mixture was diluted with water (100 mL) and brine (25 mL) and extracted with ethyl acetate (2×100 mL). The combined organic extracts were washed with water (3×100 mL) and brine (100 mL), dried with sodium sulfate, filtered, and concentrated to a crude residue which was purified by silica gel to give the desired product (0.39 g, 81%).

Aufarbeitung

  1. stirringstirred for 16 h
  2. extractionextracted with ethyl acetate (2×100 mL)
  3. washThe combined organic extracts were washed with water (3×100 mL) and brine (100 mL)
  4. dry with materialdried with sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated to a crude residue which
  7. customwas purified by silica gel

Quellen und Nachweise

ORD-Eintrag
ord-8068ea6b89b24cbc9467a6b488d49b86
Quelldatensatz
uspto-grants-2011_10
Patentnummer
US08034953B2

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