2-(N-甲基苄基氨基)乙基 3-氨基丁-2-烯酸酯 、
(E)-4-(3-Nitro-phenyl)-3-(3-oxo-2,4-dioxa-3λ5-phospha-spiro[5.5]undec-3-yl)-but-3-en-2-one 以
异丙醇 为溶剂,
以76%的产率得到2,6-Dimethyl-4-(3-nitro-phenyl)-5-(3-oxo-2,4-dioxa-3λ
5-phospha-spiro[5.5]undec-3-yl)-1,4-dihydro-pyridine-3-carboxylic acid 2-(benzyl-methyl-amino)-ethyl ester