Ethyl bromoacetate → Ethyl 2-(2-acetyl-4-bromophenoxy)acetate

HRID 53949

Reaktionsgleichung

Reaktionsgleichung von HRID 53949
[C:1]([C:4]1[CH:9]=[C:8]([Br:10])[CH:7]=[CH:6][C:5]=1[OH:11])(=[O:3])[CH3:2].Br[CH2:13][C:14]([O:16][CH2:17][CH3:18])=[O:15].C(=O)([O-])[O-].[K+].[K+]>CC(C)=O.C(Cl)(Cl)Cl>[C:1]([C:4]1[CH:9]=[C:8]([Br:10])[CH:7]=[CH:6][C:5]=1[O:11][CH2:13][C:14]([O:16][CH2:17][CH3:18])=[O:15])(=[O:3])[CH3:2]

Komponenten

6

Edukt 3

HCID 7748Ethyl bromoacetateHCID 11430Potassium CarbonateHCID 959915'-Bromo-2'-hydroxyacetophenone

Produkt 1

HCID 19261366Ethyl 2-(2-acetyl-4-bromophenoxy)acetateAusbeute 90,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 180AcetoneLösungsmittelHCID 6212ChloroformLösungsmittel

Versuchsvorschrift

13.31 g of 2-acetyl-4-bromophenol, 11.0 g of ethyl bromoacetate and 9.7 g of anhydrous potassium carbonate were refluxed under heating in 70 ml of acetone for 2 hours. Insoluble materials were removed by filtration, and the resulting filtrate was concentrated and dried. The residue thus obtained was dissolved in chloroform, washed with water, and then dried to remove the solvent. The thus treated residue was washed with a mixed solvent system of ethanol and n-hexane to isolate insoluble crystals by filtration. In this way, 16.82 g of ethyl (2-acetyl-4-bromophenyl)oxyacetate was obtained in the form of colorless plate crystals.

Aufarbeitung

  1. customInsoluble materials were removed by filtration
  2. concentrationthe resulting filtrate was concentrated
  3. customdried
  4. customThe residue thus obtained
  5. washwashed with water
  6. customdried
  7. customto remove the solvent
  8. washThe thus treated residue was washed with a mixed solvent system of ethanol and n-hexane
  9. customto isolate insoluble crystals
  10. filtrationby filtration

Quellen und Nachweise

ORD-Eintrag
ord-2031b461fb474e2485dbe138cd102dc3
Quelldatensatz
uspto-grants-1997_04
Patentnummer
US05620991

Verknüpfte Notizen

Wird geladen…