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m-Chloroperbenzoic acid → 2-(((4-((2,2-bis(fluoromethyl)-1,3-dioxan-5-yl)methoxy)-3-methylpyridin-2-yl)methyl)sulfinyl)-1H-benzimidazole

HRID 31599
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 31599
[F:1][CH2:2][C:3]1([CH2:29][F:30])[O:8][CH2:7][CH:6]([CH2:9][O:10][C:11]2[CH:16]=[CH:15][N:14]=[C:13]([CH2:17][S:18][C:19]3[NH:23][C:22]4[CH:24]=[CH:25][CH:26]=[CH:27][C:21]=4[N:20]=3)[C:12]=2[CH3:28])[CH2:5][O:4]1.ClC1C=CC=C(C(OO)=[O:39])C=1.C(=O)([O-])O.[Na+]>C1(C)C=CC=CC=1.CO>[F:1][CH2:2][C:3]1([CH2:29][F:30])[O:4][CH2:5][CH:6]([CH2:9][O:10][C:11]2[CH:16]=[CH:15][N:14]=[C:13]([CH2:17][S:18]([C:19]3[NH:20][C:21]4[CH:27]=[CH:26][CH:25]=[CH:24][C:22]=4[N:23]=3)=[O:39])[C:12]=2[CH3:28])[CH2:7][O:8]1
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Komponenten

5

Edukt 3

HCID 70297m-Chloroperbenzoic acidHCID 516892Sodium BicarbonateHCID 597925162-(((4-((2,2-bis(fluoromethyl)-1,3-dioxan-5-yl)methoxy)-3-methylpyridin-2-yl)methyl)thio)-1H-benzimidazole

Produkt 1

HCID 597923582-(((4-((2,2-bis(fluoromethyl)-1,3-dioxan-5-yl)methoxy)-3-methylpyridin-2-yl)methyl)sulfinyl)-1H-benzimidazoleAusbeute 68 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 21867641
Toluene methanol
Lösungsmittel
2×

Versuchsvorschrift

To a toluene/methanol (10:1) (20 ml) solution of the 2-(((4-((2,2-bis(fluoromethyl)-1,3-dioxan-5-yl)methoxy)-3-methylpyridin-2-yl)methyl)thio)-1H-benzimidazole (305 mg, 700 mmol) obtained in the step (7d), a toluene/methanol (10:1) (5 ml) solution of 3-chloroperbenzoic acid (167 mg, 630 μmol as the content was regarded as 65%) was added dropwise at −50° C. to −60° C. for 5 minutes in a nitrogen atmosphere. The mixture was stirred for 2 hours in the same conditions. To the reaction mixture, a saturated aqueous solution of sodium hydrogen carbonate was added and the resultant mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated. The residue was purified by silica gel column chromatography (NH silica gel, elution solvent: ethyl acetate/methanol) to obtain the title compound (215 mg, yield: 68%) as a light yellow foam.

Aufarbeitung

  1. additionwas added dropwise at −50° C. to −60° C. for 5 minutes in a nitrogen atmosphere
  2. extractionthe resultant mixture was extracted with ethyl acetate
  3. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by silica gel column chromatography (NH silica gel, elution solvent: ethyl acetate/methanol)

Quellen und Nachweise

ORD-Eintrag
ord-f7694fda9e9e4601a8c9d4dddf3e51ff
Quelldatensatz
uspto-grants-2008_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07425634B2

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