反应详情

Upon boiling a solution of 7.7 g of 2-methylbenzylideneacetoacetic acid ethyl ester and 5.6 g of carbethoxymethylidenepyrrolidine in 50 ml of ethanol for 8 hours, 5-methyl-7-(2-methylphenyl)-1,2,3,7-tetrahydroindolizine-6,8-dicarboxylic acid diethyl ester of melting point 148° (alcohol) is obtained.

1. customfor 8 hours