Hydrochloric Acid → 2-(2-(4-Chlorophenoxy)phenyl)acetic acid

HRID 1408783Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1408783
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH2:8][C:9]([O-:11])=[O:10].[Cl:12][C:13]1[CH:18]=[CH:17][C:16]([OH:19])=[CH:15][CH:14]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CN(C)CC(O)=O.Cl>O1CCOCC1.[Cu]Cl.CCOC(C)=O>[Cl:12][C:13]1[CH:18]=[CH:17][C:16]([O:19][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=2[CH2:8][C:9]([OH:11])=[O:10])=[CH:15][CH:14]=1

Komponenten

9

Edukt 5

HCID 313Hydrochloric AcidHCID 673N,N-DimethylglycineHCID 46844-ChlorophenolHCID 10796Cesium carbonateHCID 6931493HCID 6931493, Verbindung

Produkt 1

HCID 122458712-(2-(4-Chlorophenoxy)phenyl)acetic acidAusbeute 70 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 62652Cuprous chlorideKatalysatorHCID 8857Ethyl AcetateLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

2-(2-Bromophenyl)acetate (10 g, 43.7 mmol) and 4-chlorophenol (5.61 g, 43.7 mmol) were dissolved in dioxane (150 mL) whiling warming to 50. To the resulting solution were added, under stirring in an inert nitrogen atmosphere, cesium carbonate (28.35 g, 87.4 mmol) and copper (I) chloride (1.73 g, 17.48 mmol). Finally N,N-dimethylglycine (0.9 g, 8.74 mmol) was added to the green suspension. The mixture was heated at 110 for 2 days while stirring. The mixture was filtrated over dicalite, which was washed with dioxane (20 mL). The dioxane was removed in vacuum to leave brownish oil. EtOAc was added to the oil and the pH of the resulting mixture was adjusted to 1 by addition of 1 M HCl. The organic phase was washed with saturated brine, dried over Na2SO4 and concentrated under vacuum to yield the crude product, which was purified by column chromatography to give 2-(2-(4-chlorophenoxy)phenyl)acetic acid (8 g, 70%).

Aufarbeitung

  1. temperaturewarming to 50
  2. additionTo the resulting solution were added
  3. temperatureThe mixture was heated at 110 for 2 days
  4. filtrationThe mixture was filtrated over dicalite, which
  5. washwas washed with dioxane (20 mL)
  6. customThe dioxane was removed in vacuum
  7. customto leave brownish oil
  8. washThe organic phase was washed with saturated brine
  9. dry with materialdried over Na2SO4
  10. concentrationconcentrated under vacuum
  11. customto yield the crude product, which
  12. customwas purified by column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-0f9a8755df104271914fa372e8996894
Quelldatensatz
uspto-grants-2014_12
Patentnummer
US08921359B2

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