Triethylamine → 5-(Ethylthio)carbonyloxy-1-methylpyrazol-4-yl 3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)phenyl ketone

HRID 1661961Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1661961
[CH3:1][O:2][CH2:3][CH2:4][O:5][C:6]1[C:7]([CH3:25])=[C:8]([C:16]([C:18]2[CH:19]=[N:20][N:21]([CH3:24])[C:22]=2[OH:23])=[O:17])[CH:9]=[CH:10][C:11]=1[S:12]([CH3:15])(=[O:14])=[O:13].C(N(CC)CC)C.[CH3:33][CH2:34][S:35][C:36](Cl)=[O:37].C(OCC)(=O)C>C1COCC1>[CH3:1][O:2][CH2:3][CH2:4][O:5][C:6]1[C:7]([CH3:25])=[C:8]([C:16]([C:18]2[CH:19]=[N:20][N:21]([CH3:24])[C:22]=2[O:23][C:36]([S:35][CH2:34][CH3:33])=[O:37])=[O:17])[CH:9]=[CH:10][C:11]=1[S:12]([CH3:15])(=[O:14])=[O:13]

Komponenten

6

Edukt 4

HCID 8471TriethylamineHCID 8857Ethyl AcetateHCID 18056Ethyl chlorothioformateHCID 178496176HCID 178496176, Verbindung

Produkt 1

HCID 872335565-(Ethylthio)carbonyloxy-1-methylpyrazol-4-yl 3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)phenyl ketone

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

The crude 5-hydroxy-1-methylpyrazol-4-yl 3-(2-methoxyethoxy)-2-methyl-4-(methylsulfonyl)phenyl ketone obtained in the above step (3) was dissolved in anhydrous THF (10 mL), and triethylamine (190 mg) and 96% S-ethyl chlorothiolformate (151 mg) were added, followed by stirring for 1 hour at room temperature. Ethyl acetate (200 mL) was added to the reaction mixture, and the mixture was washed twice with a saturated brine. The organic layer was dried over anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:1) to obtain the desired product (250 mg).

Aufarbeitung

  1. washthe mixture was washed twice with a saturated brine
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. distillationthe solvent was distilled off under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=1:1)

Quellen und Nachweise

ORD-Eintrag
ord-f40119f5ce2d4267976ee95a02dbe706
Quelldatensatz
uspto-grants-2011_10
Patentnummer
US08030498B2

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