Sodium hydride → 2,2-Dimethyl-propionic acid 5-bromo-3-(4-dimethylamino-benzyl)-pyrazolo[3,4-b]pyridin-1-ylmethyl ester

HRID 1865645Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1865645
[Br:1][C:2]1[CH:3]=[C:4]2[C:10]([CH2:11][C:12]3[CH:17]=[CH:16][C:15]([N:18]([CH3:20])[CH3:19])=[CH:14][CH:13]=3)=[N:9][NH:8][C:5]2=[N:6][CH:7]=1.[H-].[Na+].[C:23]([O:29][CH2:30]Cl)(=[O:28])[C:24]([CH3:27])([CH3:26])[CH3:25].[Cl-].[NH4+]>CN(C)C=O>[Br:1][C:2]1[CH:3]=[C:4]2[C:10]([CH2:11][C:12]3[CH:17]=[CH:16][C:15]([N:18]([CH3:19])[CH3:20])=[CH:14][CH:13]=3)=[N:9][N:8]([CH2:30][O:29][C:23](=[O:28])[C:24]([CH3:27])([CH3:26])[CH3:25])[C:5]2=[N:6][CH:7]=1

Komponenten

6

Edukt 4

HCID 24758Sodium hydrideHCID 25517Ammonium ChlorideHCID 87885Chloromethyl pivalateHCID 178482750HCID 178482750, Verbindung

Produkt 1

HCID 686621972,2-Dimethyl-propionic acid 5-bromo-3-(4-dimethylamino-benzyl)-pyrazolo[3,4-b]pyridin-1-ylmethyl esterAusbeute 77 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

[4-(5-Bromo-1H-pyrazolo[3,4-b]pyridin-3-ylmethyl)-phenyl]-dimethyl-amine (500 mg, 1.51 mmol) and N,N-dimethylformamide (40 ml) was stirred at room temperature. Sodium hydride (60%, 121 mg, 3.03 mmol) was added to the mixture, and the reaction mixture was stirred for 30 minutes. Chloromethyl pivalate (0.44 ml, 3.05 mmol) was added, and the reaction mixture was stirred for 1.5 hours at room temperature. Saturated aqueous ammonium chloride solution was added and the mixture extracted with dichloromethane. The crude material was purified by flash chromatography (0 to 100% ethyl acetate in hexanes) to give 517 mg (77%) of 2,2-dimethyl-propionic acid 5-bromo-3-(4-dimethylamino-benzyl)-pyrazolo[3,4-b]pyridin-1-ylmethyl ester. MS m/z 445.2, 447.2 (M+H+).

Aufarbeitung

  1. stirringthe reaction mixture was stirred for 1.5 hours at room temperature
  2. extractionthe mixture extracted with dichloromethane
  3. customThe crude material was purified by flash chromatography (0 to 100% ethyl acetate in hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-f6b6bce3c05543d78ba1fb344eb2b6f7
Quelldatensatz
uspto-grants-2009_12
Patentnummer
US07626021B2

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