Imidazole → 4-[6-[4-(tert-butyl-dimethyl-silanyloxy)-phenyl]-1-(tetrahydro-pyran-2-yl)-3-vinyl-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester

HRID 82041

Reaktionsgleichung

Reaktionsgleichung von HRID 82041
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]([C:16]2[C:17]3[C:31]([CH:32]=[CH2:33])=[N:30][N:29]([CH:34]4[CH2:39][CH2:38][CH2:37][CH2:36][O:35]4)[C:18]=3[N:19]=[C:20]([C:22]3[CH:27]=[CH:26][C:25]([OH:28])=[CH:24][CH:23]=3)[CH:21]=2)=[O:15])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].N1C=CN=C1.[C:45]([Si:49](Cl)([CH3:51])[CH3:50])([CH3:48])([CH3:47])[CH3:46].O>ClCCl>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][N:11]([C:14]([C:16]2[C:17]3[C:31]([CH:32]=[CH2:33])=[N:30][N:29]([CH:34]4[CH2:39][CH2:38][CH2:37][CH2:36][O:35]4)[C:18]=3[N:19]=[C:20]([C:22]3[CH:27]=[CH:26][C:25]([O:28][Si:49]([C:45]([CH3:48])([CH3:47])[CH3:46])([CH3:51])[CH3:50])=[CH:24][CH:23]=3)[CH:21]=2)=[O:15])[CH2:12][CH2:13]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Komponenten

6

Edukt 4

HCID 795ImidazoleHCID 962WaterHCID 28928tert-Butyldimethylsilyl chlorideHCID 1363595044-[6-(4-hydroxy-phenyl)-1-(tetrahydro-pyran-2-yl)-3-vinyl-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester

Produkt 1

HCID 866781754-[6-[4-(tert-butyl-dimethyl-silanyloxy)-phenyl]-1-(tetrahydro-pyran-2-yl)-3-vinyl-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl esterAusbeute 53,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a solution of 4-[6-(4-hydroxy-phenyl)-1-(tetrahydro-pyran-2-yl)-3-vinyl-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester (3.15 g, 5.90 mmol) in dichloromethane (22 ml) were added imidazole (0.96 g, 14.17 mmol) and tert-butyl(chloro)dimethylsilane (1.07 g, 7.08 mmol). The reaction mixture was stirred at room temperature for 5 hours, water and dichloromethane were then added. The aqueous layer was separated and the organic layer was washed with water, brine, dried (Na2SO4), filtered, concentrated under vacuum. The crude residue was purified on a silica gel column chromatography using a gradient of EtOAc (0-30%) in cyclohexane to yield the title compound as a yellow foam (2.05 g, 53%).

Aufarbeitung

  1. customThe aqueous layer was separated
  2. washthe organic layer was washed with water, brine
  3. dry with materialdried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated under vacuum
  6. customThe crude residue was purified on a silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-5beb031adced494d873e77bee6399e37
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08846712B2

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