Diethyl methylmalonate → HCID 66818335, compound

Participants

Reaction Steps

Methyl-malonic acid diethyl ester (0.850 ml, 4.99 mmol) was added to a suspension of sodium hydride (55% oily suspension, 139.5 mg, 3.197 mmol) in THF (0.8 ml) over seven minutes under ice-cooling, and the mixture was stirred until foaming was terminated at room temperature (for about 25 minutes). A solution of (9-bromo-nonyloxymethyl)-benzene (593 mg, 1.89 mmol) in THF (0.12 ml) was added to the reaction solution at room temperature over 15 minutes, and the mixture was then stirred at 90° C. for five hours. The reaction mixture was diluted with ether and water was then added, followed by extraction with ether. The organic layer was dried over MgSO4 and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate=30/1→20/1) to give 2-(9-benzyloxy-nonyl)-2-methyl-malonic acid diethyl ester (735 mg, 96%).

Provenance & Evidence