Acetic Acid → HCID 19606408, compound

Participants

Reaction Steps

4-Methoxy-3-(2-phenylethoxy)benzaldehyde (51.26 g), dimethyl malonate (26.43 g), piperazine (1.70 g) and acetic acid (1.20 g) were refluxed by heating in 300 ml of benzene under azeotropic dehydration conditions for 8 hours. After the reaction solution was cooled to room temperature, it was washed with water, 1 N hydrochloric acid, a saturated aqueous solution of sodium hydrogencarbonate and a saturated aqueous solution of NaCl in consecutive order and dried over anhydrous magnesium sulfate. The drying agent was separated by filtration and the filtrate was concentrated under reduced pressure. The residue was recrystallized from isopropyl ether-dichloromethane to obtain 67.15 g of methyl 3-[4-methoxy-3-(2-phenylethoxy)phenyl]-2-methoxycarbonylacrylate.

Provenance & Evidence