Hydrochloric Acid → 4-[2-(Methoxycarbonyl)ethyl]cinnamic acid

Participants

Reaction Steps

A solution of methyl 4-formylhydrocinnamate (2.30 g), malonic acid (2.50 g) and piperidine (0.1 ml) in 12 ml pyridine was stirred at 100° C. for 2 hours, and subsequently at 140° C. for 2 hours. After addition of 100 ml ice-cold water, 210 ml of 0.5 mol/l hydrochloric acid was added dropwise to the reaction mixture to precipitate a solid, which was then filtered, washed with water, and dried by heating under reduced pressure to give 4-[2-(methoxycarbonyl)ethyl]cinnamic acid (2.38 g, 84%) as a colorless solid.

Provenance & Evidence