Acetic Anhydride → N-[[4-[2-(3-pyridinyl)-4-(trifluoromethyl)-1H-imidazol-1-yl]phenyl]sulfonyl]acetamide

HRID 2304581Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2304581
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:7]2[N:8]([C:16]3[CH:21]=[CH:20][C:19]([S:22]([NH2:25])(=[O:24])=[O:23])=[CH:18][CH:17]=3)[CH:9]=[C:10]([C:12]([F:15])([F:14])[F:13])[N:11]=2)[CH:2]=1.[C:26](OC(=O)C)(=[O:28])[CH3:27].C(N(CC)CC)C>CN(C)C1C=CN=CC=1.O>[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:7]2[N:8]([C:16]3[CH:21]=[CH:20][C:19]([S:22]([NH:25][C:26](=[O:28])[CH3:27])(=[O:23])=[O:24])=[CH:18][CH:17]=3)[CH:9]=[C:10]([C:12]([F:13])([F:14])[F:15])[N:11]=2)[CH:2]=1

Komponenten

6

Edukt 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 97993874-(2-Pyridin-3-yl-4-trifluoromethyl-imidazol-1-yl)-benzenesulfonamide

Produkt 1

HCID 12016145N-[[4-[2-(3-pyridinyl)-4-(trifluoromethyl)-1H-imidazol-1-yl]phenyl]sulfonyl]acetamideAusbeute 90 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 962WaterLösungsmittel

Versuchsvorschrift

A mixture of 4-[2-(pyridin-3-yl)-4-(trifluoromethyl)-1H-imidazol-1-yl]benzenesulfonamide (0.5 g, 1.36 mmol), acetic anhydride (0.42 g, 4.1 mmol), 4-dimethylaminopyridine (DMAP) (0.083 g, 0.68 mmol) and triethylamine (0.17 g, 1.6 mmol) was stirred at room temperature for 16 hours. The reaction mixture was diluted with 50 mL of water and extracted with ethyl acetate. The organic layer was washed with water, brine, dried over magnesium sulfate and filtered. The filtrate was concentrated under vacuum and the residue was recrystallized from ethyl acetate and hexane to afford 0.5 g (90%) of N-[[4-[2-(3-pyridinyl)-4-(trifluoromethyl)-1H-imidazol-1-yl]phenyl]sulfonyl]acetamide as a colorless solid: mp (DSC): 244-246 _C. Anal. Calc'd. for C17H13F3N4O3S: C, 49.76; H, 3.19; N, 13.65; S, 7.81. Found: C, 49.66; H, 3.06; N, 13.53; S, 8.11.

Aufarbeitung

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with water, brine
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated under vacuum
  6. customthe residue was recrystallized from ethyl acetate and hexane

Quellen und Nachweise

ORD-Eintrag
ord-3a434bb430d94fefaeb642c85afec208
Quelldatensatz
uspto-grants-2002_08
Patentnummer
US06436967B1

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