p-Toluenesulfonic acid monohydrate → 1-(4-Methanesulfonyl-phenyl)-2-p-tolyl-4-trifluoromethyl-1H-imidazole

HRID 1352960

Reaktionsgleichung

Reaktionsgleichung von HRID 1352960
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]([C:18]3[CH:23]=[CH:22][C:21]([S:24]([CH3:27])(=[O:26])=[O:25])=[CH:20][CH:19]=3)[CH2:10][C:11](O)([C:13]([F:16])([F:15])[F:14])[N:12]=2)=[CH:4][CH:3]=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]([C:18]3[CH:23]=[CH:22][C:21]([S:24]([CH3:27])(=[O:26])=[O:25])=[CH:20][CH:19]=3)[CH:10]=[C:11]([C:13]([F:15])([F:16])[F:14])[N:12]=2)=[CH:4][CH:3]=1

Komponenten

4

Edukt 2

HCID 521998p-Toluenesulfonic acid monohydrateHCID 105249012-(4-methylphenyl)-4-hydroxy-1-(4-(methylsulfonyl)phenyl]-4-trifluoromethyl-4,5-dihydro-1H-imidazole

Produkt 1

HCID 101997641-(4-Methanesulfonyl-phenyl)-2-p-tolyl-4-trifluoromethyl-1H-imidazoleAusbeute 54 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

A mixture of 2-(4-methylphenyl)-4-hydroxy-1-[4-(methylsulfonyl)phenyl]-4-trifluoromethyl-4,5-dihydro-1H-imidazole (Step 2) (0.9 g, 2.3 mmol) and p-toluenesulfonic acid monohydrate (150 mg) in toluene (100 mL) was heated to reflux for 72 hours. The reaction mixture was cooled and the solvent removed under reduced pressure. The crude residue was redissolved in methylene chloride and washed with water, aqueous sodium bicarbonate and brine. After drying (Na2SO4), filtration and concentration in vacuo, the crude mixture was purified by chromatography on silica gel using toluene/ethyl acetate (1/1) to give pure 2-(4-methylphenyl)-1-[4-(methylsulfonyl)phenyl]-4-trifluoromethyl-1H-imidazole (462. mg, 54%) as a white solid: mp (DSC) 190° C. Anal. Calc'd for C18H15N2F3SO2: C, 56.84; H, 3.97; N, 7.36; S, 8.43. Found: C, 56.66; H, 3.82; N, 7.23; S, 8.45.

Aufarbeitung

  1. temperaturewas heated
  2. temperatureto reflux for 72 hours
  3. temperatureThe reaction mixture was cooled
  4. customthe solvent removed under reduced pressure
  5. dissolutionThe crude residue was redissolved in methylene chloride
  6. washwashed with water, aqueous sodium bicarbonate and brine
  7. customAfter drying
  8. filtration(Na2SO4), filtration and concentration in vacuo
  9. customthe crude mixture was purified by chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag
ord-464b8496e0a943ada5653bb15d0fd545
Quelldatensatz
uspto-grants-2007_05
Patentnummer
US07220770B2

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