Oxalyl chloride → 3-{4-[2-(Ethylsulfonyl)ethyl]bicyclo[2.2.2]oct-1-yl}-4-methyl-5-[2-(trifluoromethyl)phenyl]-4H-1,2,4-triazole

HRID 1784507Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1784507
[CH2:1]([S:3]([CH2:6][CH2:7][C:8]12[CH2:15][CH2:14][C:11]([C:16]([NH:18][CH3:19])=O)([CH2:12][CH2:13]1)[CH2:10][CH2:9]2)(=[O:5])=[O:4])[CH3:2].C(Cl)(=O)C(Cl)=O.[F:26][C:27]([F:40])([F:39])[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=1[C:34]1NN=[N:36][N:35]=1>C(Cl)Cl.CN(C=O)C>[CH2:1]([S:3]([CH2:6][CH2:7][C:8]12[CH2:15][CH2:14][C:11]([C:16]3[N:18]([CH3:19])[C:34]([C:29]4[CH:30]=[CH:31][CH:32]=[CH:33][C:28]=4[C:27]([F:26])([F:40])[F:39])=[N:35][N:36]=3)([CH2:12][CH2:13]1)[CH2:10][CH2:9]2)(=[O:5])=[O:4])[CH3:2]

Komponenten

6

Edukt 3

HCID 65578Oxalyl chlorideHCID 207550374-[2-(ethylsulfonyl)ethyl]-N-methylbicyclo[2.2.2]octane-1-carboxamideHCID 178506136HCID 178506136, Verbindung

Produkt 1

HCID 225917093-{4-[2-(Ethylsulfonyl)ethyl]bicyclo[2.2.2]oct-1-yl}-4-methyl-5-[2-(trifluoromethyl)phenyl]-4H-1,2,4-triazole

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideKatalysatorHCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

Methyl amide 10-5 (220 mg, 0.77 mmol) was dissolved in anhydrous methylene chloride (2 mL) and treated with oxalyl chloride (2M in methylene chloride, 0.77 mL, 1.54 mmol) and DMF (2 drops). The solution was stirred at room temperature for 1 h, then solvent removed by evaporation under diminished pressure. The residue was redissolved in anhydrous toluene (2 mL) and treated with 5[2-(trifluoromethyl)phenyl]1H-tetrazole (214 mg, 1 mmol). The mixture was refluxed for 18 h. The reaction was cooled to room temperature and the cream-colored precipitate was filtered and washed to give 300 mg of crude product as the HCl salt. The salt was taken up in methylene chloride/1N HCl and the aqueous layer was washed with two additional portions of methylene chloride. The organic layers were combined and evaporated and the residue was chromatographed by flash silica gel chromatography. Elution was carried out with a gradient ranging from 0 to 5% methanol/methylene chloride. The appropriate fractions were combined and evaporated to give 3-{4-[2-(ethylsulfonyl)ethyl]bicyclo[2.2.2]oct-1-yl}-4-methyl-5-[2-(trifluoromethyl)phenyl]4H-1,2,4-triazole (10-6) as a white powder. MS (ESI+)=456.2 (M+1); 1H NMR (500 MHz, CDCl3): δ 1.46 (3H, t, J=7.3 Hz), 1.63 (6H, m), 1.78 (2H, m), 2.19 (6H, m), 2.96 (2H,m), 3.05 (2H, q, J=7.2 Hz), 3.50 (3H, s), 7.56 (1H, m), 7.72 (2H, m), 7.87 (1H, m) ppm.

Aufarbeitung

  1. customsolvent removed by evaporation under diminished pressure
  2. dissolutionThe residue was redissolved in anhydrous toluene (2 mL)
  3. temperatureThe mixture was refluxed for 18 h
  4. temperatureThe reaction was cooled to room temperature
  5. filtrationthe cream-colored precipitate was filtered
  6. washwashed
  7. customto give 300 mg of crude product as the HCl salt
  8. washthe aqueous layer was washed with two additional portions of methylene chloride
  9. customevaporated
  10. customthe residue was chromatographed by flash silica gel chromatography
  11. washElution
  12. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-ef748dab2bdd4380ac279454e952a728
Quelldatensatz
uspto-grants-2009_03
Patentnummer
US07504402B2

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