Diethyl Malonate → Diethyl (3-bromobenzyl)malonate

Participants

Reaction Steps

Sodium hydride (60%, 1.6 g) was suspended into 20 ml of dry tetrahydrofuran/15 ml of dry N,N-dimethyl formamide, and 7.6 ml of diethyl malonate was added dropwise under ice-cooling. The mixture was stirred for 15 minutes. A solution of 5 g of 3-bromobenzyl bromide/10 ml of dry tetrahydrofuran was then added, and stirred for 1 hour under ice-cooling. To the reaction solution was added ice-cold water, and extracted with ether, washed with brine, dried over anhydrous magnesium sulfate and concentrated. The residue was purified by silica gel column chromatography (Wakogel® C-200, n-hexane: ethyl acetate=10:1) to provide 5.41 g of the objective compound as colorless oil.

Provenance & Evidence