Cesium carbonate → 4-[3-[(E)-2-(4-chloro-phenyl)-vinyl]-6-(4-hydroxy-phenyl)-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester

HRID 82025

Reaktionsgleichung

Reaktionsgleichung von HRID 82025
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]([C:16]2[C:17]3[C:25](/[CH:26]=[CH:27]/[C:28]4[CH:33]=[CH:32][C:31]([Cl:34])=[CH:30][CH:29]=4)=[N:24][N:23]([CH:35]4[CH2:40][CH2:39][CH2:38][CH2:37][O:36]4)[C:18]=3[N:19]=[C:20](Cl)[CH:21]=2)=[O:15])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[OH:41][C:42]1[CH:47]=[CH:46][C:45](B(O)O)=[CH:44][CH:43]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]([C:16]2[C:17]3[C:25](/[CH:26]=[CH:27]/[C:28]4[CH:33]=[CH:32][C:31]([Cl:34])=[CH:30][CH:29]=4)=[N:24][N:23]([CH:35]4[CH2:40][CH2:39][CH2:38][CH2:37][O:36]4)[C:18]=3[N:19]=[C:20]([C:45]3[CH:46]=[CH:47][C:42]([OH:41])=[CH:43][CH:44]=3)[CH:21]=2)=[O:15])[CH2:10][CH2:9]1)=[O:7])([CH3:2])([CH3:4])[CH3:3]

Komponenten

6

Edukt 3

HCID 10796Cesium carbonateHCID 27343604-Hydroxyphenylboronic acidHCID 866781604-[6-chloro-3-[(E)-2-(4-chloro-phenyl)-vinyl]-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester

Produkt 1

HCID 1363594974-[3-[(E)-2-(4-chloro-phenyl)-vinyl]-6-(4-hydroxy-phenyl)-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl esterAusbeute 80 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

To a solution of 4-[6-chloro-3-[(E)-2-(4-chloro-phenyl)-vinyl]-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester (1.5 g, 2.56 mmol) in dioxane (38 ml) were added 4-hydroxyphenylboronic acid (0.39 g, 2.81 mmol) and an aqueous solution of cesium carbonate (0.3M, 4.6 mmol). The resulting solution was degassed using argon, tetrakis(triphenylphosphine)palladium (0.14 g, 0.13 mmol) was then added and the reaction mixture was refluxed for 3 hours. Solvents were removed under vacuum. The resulting crude mixture was submitted to a silica gel column chromatography using a gradient of ethyl acetate (0-45%) in cyclohexane to give the title compound (1.32 g, 80%) as a white solid.

Aufarbeitung

  1. customThe resulting solution was degassed
  2. additionwas then added
  3. temperaturethe reaction mixture was refluxed for 3 hours
  4. customSolvents were removed under vacuum

Quellen und Nachweise

ORD-Eintrag
ord-4fcdff0bc5b04d0f882d9bbe0214a5df
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08846712B2

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