Reaktion #2310

Reaktionsgleichung

4-hydroxy-3-methylacetophenone

methyl bromoacetate

potassium carbonate

→

methyl 4-acetyl-2-methylphenoxyacetate

Lösungsmittel

acetone

Reaktionsbedingungen

Aufarbeitung

1. 1
   FiltrationThe mixture was filtered
2. 2
   Sonstigethe filtrate evaporated
3. 3
   Sonstigeto give an oil which
4. 4
   Sonstigecrystallised

Vorschrift

A mixture of 4-hydroxy-3-methylacetophenone (5 g), methyl bromoacetate (3.70 ml) and anhydrous potassium carbonate (5.52 g) in acetone (100 ml) was stirred for 66 hours. The mixture was filtered and the filtrate evaporated to give an oil which crystallised on standing giving methyl 4-acetyl-2-methylphenoxyacetate, 7.2 g: m.p. 51°-53° C.; NMR (d6DMSO) δ 7.79 (1H, s), 7.77 (1H, d), 6.94(1H,d), 4.93 (2H, s), 3.71 (3H, s), 2.50 (3H, s+DMSO), 2.24 (3H, s).

Quelle