Dimethylformamide → Ethyl 2-[4-(1-hydroxy-2,2-dimethoxyethyl)-2,5-dimethylphenoxy]acetate

HRID 746841Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 746841
CN(C)C=O.[OH:6][CH:7]([C:13]1[C:18]([CH3:19])=[CH:17][C:16]([OH:20])=[C:15]([CH3:21])[CH:14]=1)[CH:8]([O:11][CH3:12])[O:9][CH3:10].C(=O)([O-])[O-].[K+].[K+].Cl[CH2:29][C:30]([O:32][CH2:33][CH3:34])=[O:31]>C(OCC)(=O)C>[OH:6][CH:7]([C:13]1[C:18]([CH3:19])=[CH:17][C:16]([O:20][CH2:29][C:30]([O:32][CH2:33][CH3:34])=[O:31])=[C:15]([CH3:21])[CH:14]=1)[CH:8]([O:9][CH3:10])[O:11][CH3:12]

Komponenten

6

Edukt 4

HCID 6228DimethylformamideHCID 7751Ethyl chloroacetateHCID 11430Potassium CarbonateHCID 117758724-(1-Hydroxy-2,2-dimethoxyethyl)-2,5-dimethylphenol

Produkt 1

HCID 10470761Ethyl 2-[4-(1-hydroxy-2,2-dimethoxyethyl)-2,5-dimethylphenoxy]acetateAusbeute 77,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To N,N-dimethylformamide (81 g) were added 4-(1-hydroxy-2,2-dimethoxyethyl)-2,5-dimethylphenol (20.0 g), potassium carbonate (15.8 g) and ethyl chloroacetate (12.4 g) at room temperature with stirring. The mixture was stirred at room temperature for an hour, and then stirred at 71° C. for 2 hours. The reaction mixture was diluted with ethyl acetate, washed with water and brine, and dried over anhydrous sodium sulfate. The organic layer was concentrated under reduced pressure, and a mixture of ethyl acetate and hexane was added to the residue. The precipitated crystals were collected by filtration to give ethyl 2-[4-(1-hydroxy-2,2-dimethoxyethyl)-2,5-dimethyl-phenoxy]acetate (21.3 g).

Aufarbeitung

  1. stirringThe mixture was stirred at room temperature for an hour
  2. stirringstirred at 71° C. for 2 hours
  3. washwashed with water and brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationThe organic layer was concentrated under reduced pressure
  6. additiona mixture of ethyl acetate and hexane
  7. additionwas added to the residue
  8. filtrationThe precipitated crystals were collected by filtration

Quellen und Nachweise

ORD-Eintrag
ord-4e3e11c693e349e6b2c7f344ef99fdba
Quelldatensatz
uspto-grants-2008_07
Patentnummer
US07393968B2

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