2-Fluoro-4-nitrophenol → 4-[4-(2-Fluoro-4-nitro-phenoxy)-pyrazolo[3,4-d]pyrimidin-1-yl]-piperidine-1-carboxylic acid tert-butyl ester

HRID 1931673Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1931673
[F:1][C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[CH:4][C:3]=1[OH:11].[C:12]([O:16][C:17]([N:19]1[CH2:24][CH2:23][CH:22]([N:25]2[C:29]3=[N:30][CH:31]=[N:32][C:33](Cl)=[C:28]3[CH:27]=[N:26]2)[CH2:21][CH2:20]1)=[O:18])([CH3:15])([CH3:14])[CH3:13].C(=O)([O-])[O-].[K+].[K+].C(=O)([O-])[O-].[Na+].[Na+]>CN(C)C=O>[C:12]([O:16][C:17]([N:19]1[CH2:20][CH2:21][CH:22]([N:25]2[C:29]3=[N:30][CH:31]=[N:32][C:33]([O:11][C:3]4[CH:4]=[CH:5][C:6]([N+:8]([O-:10])=[O:9])=[CH:7][C:2]=4[F:1])=[C:28]3[CH:27]=[N:26]2)[CH2:23][CH2:24]1)=[O:18])([CH3:15])([CH3:13])[CH3:14]

Komponenten

6

Edukt 4

HCID 98252-Fluoro-4-nitrophenolHCID 10340Sodium CarbonateHCID 11430Potassium CarbonateHCID 57964905Tert-butyl 4-(4-chloro-1H-pyrazolo[3,4-D]pyrimidin-1-YL)piperidine-1-carboxylate2×

Produkt 1

HCID 579650484-[4-(2-Fluoro-4-nitro-phenoxy)-pyrazolo[3,4-d]pyrimidin-1-yl]-piperidine-1-carboxylic acid tert-butyl esterAusbeute 15 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
160 °C

Versuchsvorschrift

A mixture of 2-fluoro-4-nitro-phenol (Aldrich Chemical Company, Inc., Milwaukee, Wis., USA 32 mg, 0.074 mmol), 4-(4-chloro-pyrazolo[3,4-d]pyrimidin-1-yl)-piperidine-1-carboxylic acid tert-butyl ester (Intermediate 19; 25 mg, 0.074 mmol), and potassium carbonate (27 mg, 0.196 mmol) in dimethylformamide (1 mL) was heated in a microwave oven at 160° C. for 10 min. Saturated sodium carbonate solution was added to the reaction mixture, and the mixture was then filtered through a pad of silica gel to remove the precipitate. The silica gel pad was washed with methanol and the solvents were evaporated from the filtrate. The residue was purified by HPLC to afford 4-[4-(2-fluoro-4-nitro-phenoxy)-pyrazolo[3,4-d]pyrimidin-1-yl]-piperidine-1-carboxylic acid tert-butyl ester (5 mg, 15%) as a white solid. Mass spectrum MH+=459.

Aufarbeitung

  1. filtrationthe mixture was then filtered through a pad of silica gel
  2. customto remove the precipitate
  3. washThe silica gel pad was washed with methanol
  4. customthe solvents were evaporated from the filtrate
  5. customThe residue was purified by HPLC

Quellen und Nachweise

ORD-Eintrag
ord-3cd01e48cab74714acb0d6fbc7727a0b
Quelldatensatz
uspto-grants-2012_05
Patentnummer
US08188098B2

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