Acetamidomalonic acid diethyl ester → HCID 69428762, compound

Participants

Reaction Steps

Sodium hydride (15 mmol) is added to anhydrous ethanol (50 mL). To this 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 min. A solution of 4′-phenyl-2-bromoacetophenone (10 mmol) in ethanol (10 mL) is then added and the resulting mixture is stirred at room temperature for 12 h. 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 the desired product as white solid. 1H NMR (400 MHz, CDCl3) δ 8.03 (d, J=8.6 Hz, 2H), 7.68 (d, J=8.6 Hz, 2H), 7.61 (d, J=8.5 Hz, 2H), 7.45 (m, 3H), 7.13 (s, 1H), 4.28 (m, 6H), 1.98 (s, 2H), 1.26 (t, J=7.1 Hz, 6H); MS: (ES+): 412.2 (M+1)+.

Provenance & Evidence