Methyl iodide → 4-methoxy-2,3-dihydro-1H-inden-1-one

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Methyl iodide (69 ml) is added dropwise over a period of 15 minutes to a stirred mixture of 4-hydroxy-1-indanone (150 g) and anhydrous potassium carbonate (154 g) dissolved in DMF (1.5 liter) cooled to 0° C. under nitrogen. The reaction mixture is stirred at RT for 24 hours and partitioned between methylene chloride and water. The methylene chloride fraction is washed with water and 2% aqueous NaOH and dried over Na2SO4. The dried extract is filtered, concentrated in vacuo and the residue dissolved in hot methanol which upon cooling forms a precipitate. The precipitate is filtered and recrystallized from methanol yielding the methoxy product as a solid, M.P. 104°-106° C.

Herkunft & Nachweise