2,6-Dimethyl-3-isopropoxycarbonyl-4-(3-nitrophenyl)-1,4-dihydropyridin-5-carbonsaeure-(2-phenoxyethyl)ester 以
乙醇 为溶剂,
以Analogously to Example 1 heating a solution of 75 mmols of 3'-nitrobenzylideneacetoacetic acid isopropyl ester and 75 mmols of β-aminocrotonic acid 2-phenoxyethyl ester in 120 ml of ethanol gave 2,6-dimethyl-3-isopropoxycarbonyl-4-(3'-nitrophenyl)-1,4-dihydropyridine-5-carboxylic acid 2-phenoxyethyl ester of melting point 110° C (from ethanol)的产率得到