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Water → 1-Bromo-4-hydroxy-7-phenylsulfanyl-isoquinoline-3-carboxylic acid butyl ester

HRID 250385
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 250385
P(Br)(Br)([Br:3])=O.[CH2:6]([O:10][C:11]([C:13]1[N:14]=[C:15](O)[C:16]2[C:21]([C:22]=1[OH:23])=[CH:20][CH:19]=[C:18]([S:24][C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)[CH:17]=2)=[O:12])[CH2:7][CH2:8][CH3:9].C(=O)(O)[O-].[Na+].O>C(#N)C>[CH2:6]([O:10][C:11]([C:13]1[N:14]=[C:15]([Br:3])[C:16]2[C:21]([C:22]=1[OH:23])=[CH:20][CH:19]=[C:18]([S:24][C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)[CH:17]=2)=[O:12])[CH2:7][CH2:8][CH3:9]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 962WaterHCID 24613Phosphorus oxybromideHCID 516892Sodium BicarbonateHCID 178450860HCID 178450860, Verbindung

Produkt 1

HCID 865954621-Bromo-4-hydroxy-7-phenylsulfanyl-isoquinoline-3-carboxylic acid butyl esterAusbeute 68,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342
Acetonitrile
Lösungsmittel

Versuchsvorschrift

To a solution of 4.59 g of phosphorous oxybromide (16 mmol) in 25 ml of anhydrous acetonitrile were added 1.108 g of 1,4-dihydroxy-7-phenylsulfanyl-isoquinoline-3-carboxylic acid butyl ester (3 mmol) and the mixture was refluxed gently with stirring for 1 h. Then 5.04 g of sodium bicarbonate (60 mmol) were added, followed by the dropwise addition of 8 ml of water. After stirring at ambient temperature for 90 min the mixture was concentrated in vacuo to about one third of its volume, 40 ml of water were added and the mixture was extracted with 30 ml of ethyl acetate. The mixture was filtered by suction. The organic phase was separated, dried over MgSO4, and filtered through a pad of silica gel. Evaporation in vacuo gave 0.885 g of the title compound; 1H NMR (CDCl3): δ=11.84 (s, 1H), 8.21 (d, 1H), 7.91 (d, 1H), 7.40 to 7.55 (m, 6H), 4.46 (t, 2H), 1.84 (m, 2H), 1.48 (m, 2H), 0.98 (t, 3H).

Aufarbeitung

  1. temperaturethe mixture was refluxed gently
  2. stirringAfter stirring at ambient temperature for 90 min the mixture
  3. concentrationwas concentrated in vacuo to about one third of its volume, 40 ml of water
  4. additionwere added
  5. extractionthe mixture was extracted with 30 ml of ethyl acetate
  6. filtrationThe mixture was filtered by suction
  7. customThe organic phase was separated
  8. dry with materialdried over MgSO4
  9. filtrationfiltered through a pad of silica gel
  10. customEvaporation in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-bb2ff69edc3a475d916caa984814c688
Quelldatensatz
uspto-grants-2011_01
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07863292B2

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