Diethyl Malonate → Diethyl allylmalonate

Beteiligte Stoffe

Reaktionsschritte

Malonic acid diethyl ester (100 g, 0.625 mol) was added dropwise at 0° C. to a mixture of sodium ethoxide (46.8 g, 0.688 mol) in ethanol (1 L). The reaction mixture was stirred for 4 hours. 3-Bromo-propene (83.2 g, 0.688 moles) was added dropwise to the mixture at 0° C. After addition, the mixture was warmed to reflux and stirred overnight. The mixture was cooled to room temperature, filtered and the solvent was removed in vacuo to afford the title compound in 86% yield, 100 g which was used for the next step without further purification.

Herkunft & Nachweise