diethyl (1RS,6RS)-2-oxabicyclo[4.2.0]octane-8,8-dicarboxylate 、 [1-(3-Ethoxy-4-methoxy-phenyl)-meth-(E)-ylidene]-phenyl-amine 在
ytterbium(III) triflate 作用下,
以
二氯甲烷 为溶剂,
以0.21 g的产率得到diethyl 2-(3-ethoxy-4-methoxyphenyl)-5-(3-hydroxypropyl)-1-phenyl-1,2-dihydropyridine-3,3(4H)-dicarboxylate