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Acetone → 2-(1-(Triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridin-5-yl)propan-2-ol

HRID 253368
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 253368
Br[C:2]1[CH:3]=[C:4]2[CH:10]=[CH:9][N:8]([Si:11]([CH:18]([CH3:20])[CH3:19])([CH:15]([CH3:17])[CH3:16])[CH:12]([CH3:14])[CH3:13])[C:5]2=[N:6][CH:7]=1.C([Li])(C)(C)C.[CH3:26][C:27]([CH3:29])=[O:28].O>O1CCCC1>[CH:12]([Si:11]([CH:18]([CH3:20])[CH3:19])([CH:15]([CH3:17])[CH3:16])[N:8]1[C:5]2=[N:6][CH:7]=[C:2]([C:27]([OH:28])([CH3:29])[CH3:26])[CH:3]=[C:4]2[CH:10]=[CH:9]1)([CH3:14])[CH3:13]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 180AcetoneHCID 962WaterHCID 242292235-Bromo-1-(triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridineHCID 178418306HCID 178418306, Verbindung

Produkt 1

HCID 497589892-(1-(Triisopropylsilyl)-1H-pyrrolo[2,3-b]pyridin-5-yl)propan-2-ol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028
Tetrahydrofuran
Lösungsmittel

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

To 5-bromo-1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridine (2, 2.0 g, 5.66 mmol, prepared as described in Example 4) in tetrahydrofuran (20.0 mL), cooled in a −78° C. acetone/dry ice bath, under an atmosphere of nitrogen, was added tert-butyllithium (1.7 M in tetrahydrofuran, 7.3 mL, 12 mmol) dropwise. After 20 minutes, acetone (0.830 mL, 11 mmol) was added dropwise to the reaction. The reaction was stirred for 30 minutes at −78° C. and then allowed to reach room temperature. The reaction was poured into water and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 10% ethyl acetate in hexane to give the compound (9, 1.30 g, 69%). MS (ESI) [M+H+]+=333.

Aufarbeitung

  1. customto reach room temperature
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated
  7. custompurified by silica gel column chromatography
  8. washeluting with 10% ethyl acetate in hexane
  9. customto give the compound (9, 1.30 g, 69%)

Quellen und Nachweise

ORD-Eintrag
ord-f0430494072c435094ba386904e93abf
Quelldatensatz
uspto-grants-2011_01
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07872018B2

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