Reaktion #48268

Reaktionsgleichung

Potassium carbonate

4-hydroxy-3-methoxy benzoic acid methyl ester

benzyl bromide

→

4-benzyloxy-3-methoxy benzoic acid methyl ester

Ausbeute 86.6%

Lösungsmittel

acetone

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe reaction mixture was refluxed for 12 hrs
2. 2
   SonstigeAfter the removal of the solvent under reduced pressure
3. 3
   Sonstigethe residue was partitioned between ethyl acetate (150 ml) and water (50 ml)
4. 4
   WaschenThe ethyl acetate layer was washed with water (50 ml)
5. 5
   Trocknendried over anhydrous magnesium sulfate
6. 6
   SonstigeRemoval of the solvent under reduced pressure

Vorschrift

Potassium carbonate (3.45 g; 25 mmol) was added to a solution of 4-hydroxy-3-methoxy benzoic acid methyl ester (3.6 g; 20 mmol) and benzyl bromide (3.42 g; 20 mmol) in acetone (100 ml). The reaction mixture was refluxed for 12 hrs. After the removal of the solvent under reduced pressure, the residue was partitioned between ethyl acetate (150 ml) and water (50 ml). The ethyl acetate layer was washed with water (50 ml) and dried over anhydrous magnesium sulfate. Removal of the solvent under reduced pressure provided 4.64 g of 4-benzyloxy-3-methoxy benzoic acid methyl ester (Yield=86.6%)

Quelle