Water → 2-(1-Methyl-3-trifluoromethylpyrazol-5-yloxy)4-methyl-6-(4,4,4-trifluorobut-1-enyloxy)pyridine

HRID 23317Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 23317
[I-].C[S+](C)(C)=O.[H-].[Na+].[CH3:9][N:10]1[C:14]([O:15][C:16]2[CH:21]=[C:20]([CH3:22])[CH:19]=[C:18]([O:23][CH2:24]/[CH:25]=[CH:26]/[C:27]([F:30])([F:29])[F:28])[N:17]=2)=[CH:13][C:12]([C:31]([F:34])([F:33])[F:32])=[N:11]1.O>CS(C)=O>[CH3:9][N:10]1[C:14]([O:15][C:16]2[CH:21]=[C:20]([CH3:22])[CH:19]=[C:18]([O:23][CH:24]=[CH:25][CH2:26][C:27]([F:30])([F:28])[F:29])[N:17]=2)=[CH:13][C:12]([C:31]([F:34])([F:32])[F:33])=[N:11]1

Komponenten

6

Edukt 4

HCID 962WaterHCID 24758Sodium hydrideHCID 74498Sulfoxonium, trimethyl-, iodide (1:1)HCID 15477173(E)-2-(1-methyl-3-trifluoromethylpyrazol-5-yloxy)-4-methyl-6-(4,4,4-trifluorobut-2-enyloxy)pyridine

Produkt 1

HCID 543102922-(1-Methyl-3-trifluoromethylpyrazol-5-yloxy)4-methyl-6-(4,4,4-trifluorobut-1-enyloxy)pyridineAusbeute 3,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 679Dimethyl SulfoxideLösungsmittel

Versuchsvorschrift

To a solution of trimethylsulfoxonium iodide (4.5 g, 20.5 mmol) in DMSO (50 ml) is added NaH (60% in oil, 0.82 g, 20.5 mmol) and the resulting mixture is stirred for 1 h at ambient temperature. To the resulting solution is added dropwise a solution of (E)-2-(1-methyl-3-trifluoromethylpyrazol-5-yloxy)-4-methyl-6-(4,4,4-trifluorobut-2-enyloxy)pyridine (example 1,7.1 g, 18.6 mmol) at 10° C. After 3 h of stirring at ambient temperature, the dark mixture is hydrolyzed with water (200 ml) and extracted 3 times with diethylether (50 ml). The organic fractions are washed with water, dried over anhydrous magnesium sulfate, filtered and evaporated in vacuo. Purification by flash chromatography (silica gel: pentane/ethyl acetate 9/1 v/v) yields the title compound (0.22 g, 3.1% yield) of m.p. 56° C.

Aufarbeitung

  1. stirringAfter 3 h of stirring at ambient temperature
  2. extractionextracted 3 times with diethylether (50 ml)
  3. washThe organic fractions are washed with water
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. customevaporated in vacuo
  7. customPurification by flash chromatography (silica gel: pentane/ethyl acetate 9/1 v/v)

Quellen und Nachweise

ORD-Eintrag
ord-d2471746428b47baab9624f8b8dea539
Quelldatensatz
uspto-grants-2005_02
Patentnummer
US06852673B2

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