p-Toluenesulfonic acid monohydrate → 4-[1-(4-Methanesulfonyl-phenyl)-4-trifluoromethyl-1H-imidazol-2-yl]-pyridine

HRID 1352973Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1352973
O[C:2]1([C:23]([F:26])([F:25])[F:24])[CH2:6][N:5]([C:7]2[CH:12]=[CH:11][C:10]([S:13]([CH3:16])(=[O:15])=[O:14])=[CH:9][CH:8]=2)[C:4]([C:17]2[CH:22]=[CH:21][N:20]=[CH:19][CH:18]=2)=[N:3]1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[CH3:16][S:13]([C:10]1[CH:9]=[CH:8][C:7]([N:5]2[CH:6]=[C:2]([C:23]([F:25])([F:26])[F:24])[N:3]=[C:4]2[C:17]2[CH:18]=[CH:19][N:20]=[CH:21][CH:22]=2)=[CH:12][CH:11]=1)(=[O:15])=[O:14]

Komponenten

4

Edukt 2

HCID 521998p-Toluenesulfonic acid monohydrateHCID 229977844-(4-hydroxy-1-[4-(methylsulfonyl)phenyl]-4-(trifluoromethyl)-4,5-dihydro-1H-imidazol-2-yl]pyridine

Produkt 1

HCID 105709704-[1-(4-Methanesulfonyl-phenyl)-4-trifluoromethyl-1H-imidazol-2-yl]-pyridineAusbeute 41 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

A mixture of the 4,5-dihydro-imidazole of step 2 (0.85 g, 2.2 mmol) and p-toluenesulfonic acid monohydrate (0.12 g) in toluene (150 ml) was heated to reflux for 24 hours. The reaction mixture was cooled and the solvent removed under reduced pressure. The crude mixture was purified by chromatography on silica gel using ethyl acetate/acetone (96/4) to give pure 4-[1-[4-(methylsulfonyl)phenyl]-4-trifluoromethyl-1H-imidazol-2-yl]pyridine (330 mg, 41%) as a white solid: mp (DSC) 197° C. Anal. Calc'd. for C16H12N3SO2F3: C, 52.30; H, 3.29; N, 11.44; S, 8.73. Found: C, 52.19; H, 3.26; N, 11.25; S, 8.99.

Aufarbeitung

  1. temperaturewas heated
  2. temperatureto reflux for 24 hours
  3. temperatureThe reaction mixture was cooled
  4. customthe solvent removed under reduced pressure
  5. customThe crude mixture was purified by chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag
ord-90b3a86b96e5480f8d0997d02cc53411
Quelldatensatz
uspto-grants-2007_05
Patentnummer
US07220770B2

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