反应详情

Starting with 0.388 g (1.05 mmol) of 5-[[3-(ethoxycarbonyl)phenyl]carbonyl]-2-hydroxybenzenepropanoic acid ethyl ester, and 1.81 g (8.38 mmol) of 1,4-dibromobutane, the title compound was obtained as a colorless oil, in 81.2% yield, using the procedure of example 21.