3-Bromo-1,1,1-trifluoro-2-propanone → HCID 22997716, Verbindung

HRID 1166349Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1166349
[F:1][C:2]([F:23])([F:22])[C:3]1[CH:8]=[CH:7][C:6]([C:9](=[NH:21])[NH:10][C:11]2[CH:16]=[CH:15][C:14]([S:17]([CH3:20])(=[O:19])=[O:18])=[CH:13][CH:12]=2)=[CH:5][CH:4]=1.C(=O)(O)[O-].[Na+].Br[CH2:30][C:31](=[O:36])[C:32]([F:35])([F:34])[F:33]>C(O)(C)C>[OH:36][C:31]1([C:32]([F:35])([F:34])[F:33])[CH2:30][N:10]([C:11]2[CH:16]=[CH:15][C:14]([S:17]([CH3:20])(=[O:19])=[O:18])=[CH:13][CH:12]=2)[C:9]([C:6]2[CH:5]=[CH:4][C:3]([C:2]([F:1])([F:22])[F:23])=[CH:8][CH:7]=2)=[N:21]1

Komponenten

5

Edukt 3

HCID 790083-Bromo-1,1,1-trifluoro-2-propanoneHCID 516892Sodium BicarbonateHCID 178504795HCID 178504795, Verbindung

Produkt 1

HCID 22997716HCID 22997716, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3776IsopropanolLösungsmittel

Reaktionsbedingungen

Temperatur
72.5 °C

Versuchsvorschrift

To a mixture of 4-(trifluoromethyl)-N-[4-(methylsulfonyl)phenyl]benzenecarboximidamide (10 mmol) and sodium bicarbonate (20 mmol) in isopropanol (100 mL), 3-bromo-1,1,1-trifluoroacetone (20 mmol) is added. After heating the reaction mixture at 70-75° C. for 20 hours, the solvent is removed. The residue is redissolved in methylene chloride and washed with water. The organic fractions are combined, dried over sodium sulfate, filtered and concentrated in vacuo. The crude product is purified by chromatography (silica gel, toluene/ethyl acetate, 7/3) to give 4-hydroxy -1-[4-(methylsulfonyl)phenyl]-2-(4-trifluoromethylphenyl)-4-trifluoromethyl-4,5-dihydro-1H-imidazole.

Aufarbeitung

  1. additionis added
  2. customthe solvent is removed
  3. dissolutionThe residue is redissolved in methylene chloride
  4. washwashed with water
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe crude product is purified by chromatography (silica gel, toluene/ethyl acetate, 7/3)

Quellen und Nachweise

ORD-Eintrag
ord-dc769f19af07430e86814771b8a739ac
Quelldatensatz
uspto-grants-2003_09
Patentnummer
US06613789B2

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