R-(6-bromopyridin-3-yl)ethanol 、 (4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-[[1-[(1S,2S)-2-fluorocyclopropanecarbonyl]azetidin-3-yl]amino]-4-methyl-2,3-dihydro-2,7-naphthyridin-1-one 在
potassium phosphate 、
copper(l) iodide 、
N,N'-二甲基乙二胺 作用下,
以
N-甲基吡咯烷酮 为溶剂,
以47 %的产率得到(4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-[[1-[(1S,2S)-2-fluorocyclopropanecarbonyl]azetidin-3-yl]amino]-2-[5-[(1R)-1-hydroxyethyl]pyridin-2-yl]-4-methyl-3H-2,7-naphthyridin-1-one