ethyl 4-[(5-{[(4,6-dichloropyrimidin-5-yl)carbonyl](2 hydroxyethyl)amino}pyridin-2-yl)oxy]cyclohexanecarboxylate 在
N,N-二异丙基乙胺 作用下,
以
乙腈 为溶剂,
生成 ethyl trans-4-{[5-(4-chloro-5-oxo-7,8-dihydropyrimido[5,4-f][1,4]oxazepin-6(5H)-yl)pyridin-2-yl]oxy}cyclohexanecarboxylate 、 ethyl trans-4-{[5-(4-chloro-5-oxo-7,8-dihydropyrimido[5,4-f][1,4]oxazepin-6(5H)-yl)pyridin-2-yl]oxy}cyclohexanecarboxylate