反应详情

Upon heating a solution of 5.3 g of benzaldehyde, 6.5 g of acetoacetic acid ethyl ester and 7.8 g of 2-carbethoxymethylideneimidazolidine in 50 ml of ethanol for 6 hours, 5-methyl-7- phenyl-1,2,3,7-tetrahydroimidazolo [1,2-a ]pyridine-6,8-dicarboxylic acid diethyl ester of melting point 165° (alcohol) is obtained.