氯乙酰氯 、
2-{N'-[1-(4-Chloro-phenyl)-meth-(E)-ylidene]-hydrazino}-4-(4-methoxy-phenyl)-1-methyl-6-oxo-1,6-dihydro-pyrimidine-5-carbonitrile 在
三乙胺 作用下,
以
1,4-二氧六环 为溶剂,
以39%的产率得到2-[3-Chloro-2-(4-chloro-phenyl)-4-oxo-azetidin-1-ylamino]-4-(4-methoxy-phenyl)-1-methyl-6-oxo-1,6-dihydro-pyrimidine-5-carbonitrile