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Sodium Thiosulfate → 3-hydroxy-5-{[(1S)-1-(hydroxymethyl)propyl]oxy}-N-(1-methyl-1H-pyrazol-3-yl)benzamide

HRID 1175923
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Reaktionsgleichung

Reaktionsgleichung von HRID 1175923
[OH:1][C:2]1[CH:3]=[C:4]([CH:14]=[C:15]([O:17][C@H:18]([CH2:21][O:22]C)[CH2:19][CH3:20])[CH:16]=1)[C:5]([NH:7][C:8]1[CH:12]=[CH:11][N:10]([CH3:13])[N:9]=1)=[O:6].I[Si](C)(C)C.C(=O)([O-])O.[Na+].S([O-])([O-])(=O)=S.[Na+].[Na+]>C(#N)C>[OH:1][C:2]1[CH:3]=[C:4]([CH:14]=[C:15]([O:17][C@H:18]([CH2:21][OH:22])[CH2:19][CH3:20])[CH:16]=1)[C:5]([NH:7][C:8]1[CH:12]=[CH:11][N:10]([CH3:13])[N:9]=1)=[O:6]
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Komponenten

6

Edukt 4

HCID 24477Sodium ThiosulfateHCID 85247Trimethylsilyl iodideHCID 516892Sodium BicarbonateHCID 591271273-hydroxy-5-{[(1S)-1-(methoxymethyl)propyl]oxy}-N-(1-methyl-1H-pyrazol-3-yl)benzamide

Produkt 1

HCID 591271493-hydroxy-5-{[(1S)-1-(hydroxymethyl)propyl]oxy}-N-(1-methyl-1H-pyrazol-3-yl)benzamideAusbeute 82,9 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

To a solution of 3-hydroxy-5-({(1S)-1-[(methyloxy)methyl]propyl}oxy)-N-(1-methyl-1H-pyrazol-3-yl)benzamide (500 mg, 1.6 mmol) in acetonitrile (25 mL), iodotrimethylsilane (1.11 mL, 7.8 mmol) was added and the resulting mixture stirred for 16 hours. Saturated sodium hydrogencarbonate solution (10 mL) was added, the solution stirred for 10 mins, saturated aqueous sodium thiosulfate (5 mL) was added then the acetonitrile was removed in vacuo. The residual aqueous layer was extracted with ethyl acetate (3×40 mL) and the organic layers combined, dried (MgSO4), filtered and evaporated and purified by column chromatography, eluting with 85% ethyl acetate in isohexane, to give the title compound as a colourless foam (405 mg). 1H NMR δ (d6-DMSO): 0.95 (t, 3H), 1.5-1.8 (m, 2H), 3.5 (m, 2H), 3.8 (s, 3H), 4.3 (m, 1H), 4.8 (t, 1H), 6.45 (s, 1H), 6.55 (s, 1H), 6.9 (s, 1H), 7.05 (s, 1H), 7.55 (s, 1H), 9.6 (s, 1H); m/z 306 (M+H)+

Aufarbeitung

  1. stirringthe solution stirred for 10 mins
  2. customthe acetonitrile was removed in vacuo
  3. extractionThe residual aqueous layer was extracted with ethyl acetate (3×40 mL)
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. customevaporated
  7. custompurified by column chromatography
  8. washeluting with 85% ethyl acetate in isohexane

Quellen und Nachweise

ORD-Eintrag
ord-89d74c3cfdcd47429480a14a2f75c8f4
Quelldatensatz
uspto-grants-2010_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07842694B2

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