Benzyl Bromide → 2-(Benzyloxy)-5-hydroxybenzaldehyde

HRID 412165

Reaktionsgleichung

Reaktionsgleichung von HRID 412165
[OH:1][C:2]1[CH:9]=[CH:8][C:7]([OH:10])=[CH:6][C:3]=1[CH:4]=[O:5].C(=O)([O-])[O-].[Li+].[Li+].[CH2:17](Br)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.CCOC(C)=O>CN(C=O)C>[CH2:17]([O:1][C:2]1[CH:9]=[CH:8][C:7]([OH:10])=[CH:6][C:3]=1[CH:4]=[O:5])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Komponenten

6

Edukt 4

HCID 7498Benzyl BromideHCID 8857Ethyl AcetateHCID 11125Lithium CarbonateHCID 709492,5-Dihydroxybenzaldehyde

Produkt 1

HCID 185361922-(Benzyloxy)-5-hydroxybenzaldehyde

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

To a solution of 2,5-dihydroxybenzaldehyde (10.41 g, 75.4 mmol) in 100 mL of DMF was added lithium carbonate (16.71 g, 226 mmol), followed by benzyl bromide (13.5 mL, 113 mmol). The solution was warmed to 60° C. and stirred for 30 hours. The reaction was poured into EtOAc and washed with water, saturated NaHCO3 solution and brine, dried (Na2SO4), filtered, and concentrated in vacuo. The product was isolated as a brown oil which was used without further purification.

Aufarbeitung

  1. washwashed with water, saturated NaHCO3 solution and brine
  2. dry with materialdried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe product was isolated as a brown oil which
  6. customwas used without further purification

Quellen und Nachweise

ORD-Eintrag
ord-3644a0c03a8047b489215c373b988329
Quelldatensatz
uspto-grants-2003_05
Patentnummer
US06562823B1

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