Sodium hydride → tert-butyl 4-(5-iodo-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)piperazine-1-carboxylate

HRID 387590Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 387590
[H-].[Na+].[I:3][C:4]1[CH:9]=[N:8][C:7]2[N:10]([CH2:13][C:14]3[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[CH:16][CH:15]=3)[N:11]=[CH:12][C:6]=2[C:5]=1O.FC(F)(F)S(N(C1C=CC=CC=1)S(C(F)(F)F)(=O)=O)(=O)=O.[N:44]1([C:50]([O:52][C:53]([CH3:56])([CH3:55])[CH3:54])=[O:51])[CH2:49][CH2:48][NH:47][CH2:46][CH2:45]1.[NH4+].[Cl-]>CN(C=O)C>[I:3][C:4]1[C:5]([N:47]2[CH2:46][CH2:45][N:44]([C:50]([O:52][C:53]([CH3:56])([CH3:55])[CH3:54])=[O:51])[CH2:49][CH2:48]2)=[C:6]2[CH:12]=[N:11][N:10]([CH2:13][C:14]3[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[CH:16][CH:15]=3)[C:7]2=[N:8][CH:9]=1

Komponenten

7

Edukt 5

HCID 24758Sodium hydrideHCID 25517Ammonium ChlorideHCID 142176Phenyl triflimideHCID 143452tert-Butyl piperazine-1-carboxylateHCID 178490906HCID 178490906, Verbindung

Produkt 1

HCID 68758063tert-butyl 4-(5-iodo-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)piperazine-1-carboxylateAusbeute 93 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel2×

Reaktionsbedingungen

Temperatur
40 °C

Versuchsvorschrift

Sodium hydride (0.0881 g, 2.20 mmol) in DMF (5 mL) was added dropwise to 5-iodo-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-ol (0.70 g, 1.84 mmol) in DMF (5 mL). Then the reaction mixture was warmed to 40° C. and stirred for 30 minutes. After cooling to room temperature, 1,1,1-trifluoro-N-phenyl-N-(trifluoromethylsulfonyl)methanesulfonamide (0.787 g, 2.20 mmol) was added and stirred at room temperature for 1 hour. tert-Butyl piperazine-1-carboxylate (0.787 g, 4.22 mmol) was then added, and the mixture was stirred at 80° C. for 1 hour. Saturated NH4Cl (20 mL) was added, and the reaction was extracted with ethyl acetate and dried over sodium sulfate. After removal of the solvent, the resulting residue was purified by column chromatography (hexane:ethyl acetate, 5:1) to give tert-butyl 4-(5-iodo-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)piperazine-1-carboxylate (0.94 g, 93%) as a solid. MS ESI (+) m/z 550.3 detected. 1H NMR (400 Hz, DMSO-d6) δ 8.64 (s, 1H), 8.31 (s, 1H), 7.20 (d, J=7.6 Hz, 2H), 6.82 (d, J=7.6 Hz, 2H), 5.52 (s, 2H), 3.69 (s, 3H), 3.56 (m, 4H), 3.46 (m, 4H), 1.44 (s, 9H).

Aufarbeitung

  1. temperatureAfter cooling to room temperature
  2. stirringstirred at room temperature for 1 hour
  3. stirringthe mixture was stirred at 80° C. for 1 hour
  4. extractionthe reaction was extracted with ethyl acetate
  5. dry with materialdried over sodium sulfate
  6. customAfter removal of the solvent
  7. customthe resulting residue was purified by column chromatography (hexane:ethyl acetate, 5:1)

Quellen und Nachweise

ORD-Eintrag
ord-7f657cec822e464695fac152322011f8
Quelldatensatz
uspto-grants-2013_02
Patentnummer
US08372842B2

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