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Water → 4-bromo-2-(fluoromethyl)-1-(2-methyl-3-(trifluoromethyl)benzyl)-6-nitro-1H-benzo[d]imidazole

HRID 1622468
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1622468
[Br:1][C:2]1[C:10]2[N:9]=[C:8]([CH2:11][F:12])[NH:7][C:6]=2[CH:5]=[C:4]([N+:13]([O-:15])=[O:14])[CH:3]=1.Br[CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[C:20]([C:24]([F:27])([F:26])[F:25])[C:19]=1[CH3:28].C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[Br:1][C:2]1[C:10]2[N:9]=[C:8]([CH2:11][F:12])[N:7]([CH2:17][C:18]3[CH:23]=[CH:22][CH:21]=[C:20]([C:24]([F:25])([F:26])[F:27])[C:19]=3[CH3:28])[C:6]=2[CH:5]=[C:4]([N+:13]([O-:15])=[O:14])[CH:3]=1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 27756171-(Bromomethyl)-2-methyl-3-(trifluoromethyl)benzeneHCID 866878294-bromo-2-(fluoromethyl)-6-nitro-1H-benzo[d]imidazole

Produkt 1

HCID 866878304-bromo-2-(fluoromethyl)-1-(2-methyl-3-(trifluoromethyl)benzyl)-6-nitro-1H-benzo[d]imidazoleAusbeute 62,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

Into a 250 ml of round bottom flask with 4-bromo-2-(fluoromethyl)-6-nitro-1H-benzo[d]imidazole (3 g, 10.95 mmol) in N,N-Dimethylformamide (DMF) (50 mL) was added 1-(bromomethyl)-2-methyl-3-(trifluoromethyl)benzene (4.16 g, 16.42 mmol) and potassium carbonate (4.54 g, 32.8 mmol). The resulting reaction mixture was stirred 1 h at 80° C., cooled to room temperature and poured into water, extracted with ethyl acetate, washed with water, brine, dried (MgSO4) and evaporated. The residue was purified on a silica gel cartridge and eluted with a gradient of 0% ethyl acetate/hexanes to 80% over 10 column volumes. The expected compound was collected and evaporated to yield 4-bromo-2-(fluoromethyl)-1-(2-methyl-3-(trifluoromethyl)benzyl)-6-nitro-1H-benzo[d]imidazole (3.05 g, 6.84 mmol, 62.4% yield) as a brown solid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.56 (s, 3H) 5.54-5.78 (m, 4H) 6.51 (d, J=7.83 Hz, 1H) 7.18 (t, J=7.83 Hz, 1H) 7.64 (d, J=7.83 Hz, 1H) 8.13 (d, J=1.77 Hz, 1H) 8.44 (d, 1H); LC/MS: MS (ES+) m/e 447 [M+H]+.

Aufarbeitung

  1. customThe resulting reaction mixture
  2. temperaturecooled to room temperature
  3. extractionextracted with ethyl acetate
  4. washwashed with water, brine
  5. dry with materialdried (MgSO4)
  6. customevaporated
  7. customThe residue was purified on a silica gel cartridge
  8. washeluted with a gradient of 0% ethyl acetate/hexanes to 80% over 10 column volumes
  9. customThe expected compound was collected
  10. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-17edc653b9a64091967fb60c185395a2
Quelldatensatz
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08778937B2

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