1,3-Dibromopropane → 2-[4-(3-Bromopropoxy)phenyl]ethanol

HRID 724582

Reaktionsgleichung

Reaktionsgleichung von HRID 724582
[OH:1][C:2]1[CH:10]=[CH:9][C:5]([CH2:6][CH2:7][OH:8])=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[Br:17][CH2:18][CH2:19][CH2:20]Br>C(#N)C>[Br:17][CH2:18][CH2:19][CH2:20][O:1][C:2]1[CH:10]=[CH:9][C:5]([CH2:6][CH2:7][OH:8])=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 80011,3-DibromopropaneHCID 10393TyrosolHCID 11430Potassium Carbonate

Produkt 1

HCID 218806552-[4-(3-Bromopropoxy)phenyl]ethanolAusbeute 77,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Reaktionsbedingungen

Temperatur
70 °C

Versuchsvorschrift

To a solution of 4-hydroxyphenethyl alcohol (4.37 g, 31.0 mmol) and potassium carbonate (6.55 g, 47.0 mmol) in acetonitrile (62.0 mL) was added 1,3 dibromopropane (31.0 mL, 316 mmol). The reaction mixture was heated to 70° C. for 12 hours and then cooled to room temperature, filtered and concentrated under vacuum. The resulting oil was purified by silica gel chromatography using a mixture of 4:1 hexanes and ethyl acetate to give the title compound (6.21 g) as a white solid.

Aufarbeitung

  1. temperaturecooled to room temperature
  2. filtrationfiltered
  3. concentrationconcentrated under vacuum
  4. customThe resulting oil was purified by silica gel chromatography
  5. additiona mixture of 4:1 hexanes and ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-f585a828541a4ba1b2e18b08b9c6a751
Quelldatensatz
uspto-grants-2006_11
Patentnummer
US07141671B2

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