Phenacyl bromide → Diethyl acetamido(2-oxo-2-phenylethyl)propanedioate

Participants

Reaction Steps

Sodium hydride (15 mmol) is added to anhydrous ethanol (50 mL) and to the resulting sodium ethoxide solution is added 2-acetylaminomalonic acid diethyl ester (15 mmol) in one portion. The resulting mixture is stirred at room temperature for 30 minutes. A solution of 2-bromoacetophenone (10 mmol) in ethanol (10 mL) is then added and the resulting mixture is stirred at room temperature for 12 hours. After concentrating under reduced pressure, the residue is dissolved in EtOAc and water. The organic phase is washed with brine and dried over Na2SO4. After removal of the solvent, the crude material is purified by column chromatography using EtOAc/hexane (1/3) giving 2-acetylamino-2-(2-oxo-2-phenyl-ethyl)-malonic acid diethyl ester as white solid; MS: (ES+): 336.1 (M+1)+.

Provenance & Evidence