N-Piperidinoethanol → 5-(1,3-Dioxolan-2-yl)-3-[2-(piperidin-1-yl)ethoxy]-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-indazole

HRID 1038394Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1038394
[O:1]1[CH2:5][CH2:4][O:3][CH:2]1[C:6]1[CH:7]=[C:8]2[C:12](=[CH:13][CH:14]=1)[N:11]([CH2:15][O:16][CH2:17][CH2:18][Si:19]([CH3:22])([CH3:21])[CH3:20])[N:10]=[C:9]2I.[N:24]1([CH2:30][CH2:31][OH:32])[CH2:29][CH2:28][CH2:27][CH2:26][CH2:25]1>C1(C)C=CC=CC=1>[O:1]1[CH2:5][CH2:4][O:3][CH:2]1[C:6]1[CH:7]=[C:8]2[C:12](=[CH:13][CH:14]=1)[N:11]([CH2:15][O:16][CH2:17][CH2:18][Si:19]([CH3:22])([CH3:21])[CH3:20])[N:10]=[C:9]2[O:32][CH2:31][CH2:30][N:24]1[CH2:29][CH2:28][CH2:27][CH2:26][CH2:25]1

Komponenten

4

Edukt 2

HCID 18232N-PiperidinoethanolHCID 584076045-(1,3-Dioxolan-2-yl)-3-iodo-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-indazole

Produkt 1

HCID 584075815-(1,3-Dioxolan-2-yl)-3-[2-(piperidin-1-yl)ethoxy]-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-indazole

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

The title compound was prepared from 600 mg (1.344 mmol) 5-(1,3-dioxolan-2-yl)-3-iodo-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-indazole (Example 6A) in analogy to the procedure described in Example 21A. The procedure was modified by using 5 equivalents of 2-(piperidin-1-yl)ethanol as the alcohol reactant and by switching to toluene as solvent. Instead of using microwave irradiation, the reaction mixture was refluxed for 5 days employing conventional heating. During this time, the same amounts of catalyst and ligand were added again on day 3. The crude product thus obtained was purified by chromatography on silica gel (cyclohexane/ethyl acetate gradient) to afford 244 mg (32% of th.) of the title compound.

Aufarbeitung

  1. custommicrowave irradiation
  2. temperaturethe reaction mixture was refluxed for 5 days
  3. additionDuring this time, the same amounts of catalyst and ligand were added again on day 3
  4. customThe crude product thus obtained

Quellen und Nachweise

ORD-Eintrag
ord-373c9e526a4f471799039e06becd8ab9
Quelldatensatz
uspto-grants-2013_10
Patentnummer
US08551989B2

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