(difluoromethoxy)cyclobutan-1-amine 、 ethyl 2-(2,8-dichloro-9-(methylthio)-5-oxobenzo[b][1,8]naphthyridin-10(5H)-yl)acetate 在
三乙胺 作用下,
以
1,4-二氧六环 为溶剂,
反应 16.0h,
以44%的产率得到Ethyl 2-[8-chloro-2-[[3-(difluoromethoxy)cyclobutyl]amino]-9-methylsulfanyl-5-oxobenzo[b][1,8]naphthyridin-10-yl]acetate