3-{[1-(4-Chloro-phenyl)-meth-(E)-ylidene]-amino}-chromen-2-one 、 methyl 1-benzyl-2-methyl-4-phenyl-1,4-dihydropyridine-3-carboxylate 在
ytterbium(III) triflate 作用下,
以
乙腈 为溶剂,
反应 6.0h,
以0.464 g的产率得到methyl 1-benzyl-5-(4-chlorophenyl)-2-methyl-7-oxo-4-phenyl-4,4a,5,6,7,12c-hexahydro-1H-chromeno[3,4-h][1,6]naphthyridine-3-carboxylate