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Hydrochloric Acid → Methyl 7-hydroxy-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}-1H-indole-2-carboxylate

HRID 1188907
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1188907
[OH:1][C:2]1[CH:3]=[C:4]([O:14][C:15]2[CH:16]=[N:17][C:18]([S:21]([CH3:24])(=[O:23])=[O:22])=[CH:19][CH:20]=2)[CH:5]=[C:6]2[C:10]=1[NH:9][C:8]([C:11]([OH:13])=[O:12])=[CH:7]2.Cl.O.[CH3:27]O>C1(C)C=CC=CC=1>[OH:1][C:2]1[CH:3]=[C:4]([O:14][C:15]2[CH:16]=[N:17][C:18]([S:21]([CH3:24])(=[O:23])=[O:22])=[CH:19][CH:20]=2)[CH:5]=[C:6]2[C:10]=1[NH:9][C:8]([C:11]([O:13][CH3:27])=[O:12])=[CH:7]2
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 887MethanolHCID 962WaterHCID 668976607-Hydroxy-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}-1H-indole-2-carboxylic acid

Produkt 1

HCID 66897290Methyl 7-hydroxy-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}-1H-indole-2-carboxylateAusbeute 74 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a solution of 7-hydroxy-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}-1H-indole-2-carboxylic acid (4.7 g) in a mixture of methanol (30 mL) and toluene (90 mL) was added dropwise 2M trimethylsilyldiazomethane diethyl ether solution (7.4 mL) at 0° C. The mixture was stirred at 0° C. for 30 min, and 2M trimethylsilyldiazomethane diethyl ether solution (3.7 mL) was added dropwise to the mixture. After stirring at 0° C. for 30 min, 1M hydrochloric acid (2 mL) was added to the mixture to quench the reaction. Water was added to the mixture and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over magnesium sulfate, filtered and concentrated. The residual yellow oil was solidified with ethyl acetate-diethyl ether. The resulting solid was washed with diethyl ether to give the title compound (3.6 g, 74%) as a pale orange solid. MS 363 (MH+).

Aufarbeitung

  1. stirringAfter stirring at 0° C. for 30 min
  2. customto quench
  3. customthe reaction
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe organic layer was washed with saturated brine
  6. dry with materialdried over magnesium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated
  9. washThe resulting solid was washed with diethyl ether

Quellen und Nachweise

ORD-Eintrag
ord-b1d318651eb14300913766bf678eecbd
Quelldatensatz
uspto-grants-2014_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08673942B2

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