反应详情

温度

-78 °C

Diethylisopropylidenemalonate (6.686 ml, 34.09 mmol) was dissolved in 300 ml Et2O and cooled to −78° C. 4-Methoxybenzylmagnesium chloride (150.000 ml, 37.50 mmol) was added and stirring was continued for 5 h. The temperature was warmed up to 0° C. The reaction was hydrolyzed with 0.5 M HCl and extracted 3×EtOAc. Glass col. Chromatography (10-50% EtOAc in Hex.) provided diethyl 2-(1-(4-methoxyphenyl)-2-methylpropan-2-yl)malonate. MS m/z: 323.1 (M+1).

1. temperatureThe temperature was warmed up to 0° C
2. extractionextracted 3×EtOAc