Cesium carbonate → HCID 59610024, Verbindung

HRID 1889166Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1889166
[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[OH:9].C(=O)([O-])[O-].[Cs+].[Cs+].[CH3:16][O:17][C:18](=[O:36])[CH:19](Br)[C:20]1[CH:25]=[CH:24][C:23]([S:26]([CH:29]2[CH2:34][CH2:33][O:32][CH2:31][CH2:30]2)(=[O:28])=[O:27])=[CH:22][CH:21]=1>C(#N)C.C(OCC)(=O)C>[CH3:16][O:17][C:18](=[O:36])[CH:19]([O:9][C:3]1[CH:4]=[CH:5][C:6]([F:8])=[CH:7][C:2]=1[F:1])[C:20]1[CH:25]=[CH:24][C:23]([S:26]([CH:29]2[CH2:34][CH2:33][O:32][CH2:31][CH2:30]2)(=[O:27])=[O:28])=[CH:22][CH:21]=1

Komponenten

6

Edukt 3

HCID 10796Cesium carbonateHCID 1230512,4-DifluorophenolHCID 59610060HCID 59610060, Verbindung

Produkt 1

HCID 59610024HCID 59610024, VerbindungAusbeute 41,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6342AcetonitrileLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

A mixture of 2, 4 difluorophenol (0.28 g, 2.18 mmol) and cesium carbonate (0.39 g, 1.19 mmol) in acetonitrilie (20 ml) stirred for 30 mins. A solution of bromo-[4-(tetrahydro-pyran-4-sulfonyl)-phenyl]-acetic acid methyl ester (0.75 g, 1.98 mmol) in acetonitrile (5 ml) was added drop wise at room temperature and stirred further for 2 hrs. Reaction mixture was diluted with ethyl acetate (50 ml), washed with water, 1N NaOH (cold, 50 ml), and brine (50 ml) dried over anhydrous sodium sulfate, filtered and concentrated to provide (2,4-difluoro-phenoxy)-[4-(tetrahydro-pyran-4-sulfonyl)-phenyl]-acetic acid methyl ester (0.35 gm).

Aufarbeitung

  1. stirringstirred further for 2 hrs
  2. customReaction mixture
  3. washwashed with water, 1N NaOH (cold, 50 ml), and brine (50 ml)
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-7d14bb2e11eb40d39a0126029f3ad53e
Quelldatensatz
uspto-grants-2013_08
Patentnummer
US08501955B2

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