Reaktion #725879

Reaktionsgleichung

methyl salicylate

K2CO3

methyl chloroacetate

→

1

Ausbeute 17.0%

2-Methoxycarbonylmethoxy-benzoic acid methyl ester

Ausbeute 17.0%

Lösungsmittel

acetone

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturrefluxed for 36 hours
2. 2
   workup.DISTILLATIONThe acetone was distilled off
3. 3
   workup.ADDITIONwater (1200 ml) was added
4. 4
   ExtraktionCrude 1 was extracted into chloroform
5. 5
   Trocknendried over Na2SO4
6. 6
   workup.DISTILLATIONdistilled
7. 7
   Sonstigepurified by column chromatography on silica gel

Vorschrift

To a mixture of methyl salicylate (100 g, 657 mmol) and anhydrous K2CO3 (360 g, 2.605 mol) in anhydrous acetone (1000 ml) was added methyl chloroacetate (94 g, 866 mmol) and refluxed for 36 hours. The acetone was distilled off and water (1200 ml) was added. Crude 1 was extracted into chloroform, dried over Na2SO4 distilled and purified by column chromatography on silica gel using hexane as eluant to give pure 1 (25 grams, 17%) as a light yellow syrup.

Quelle