ethyl 8,9-difluoro-4-methyl-1-oxo-1,4-dihydrobenzo[f] [1,7]naphthyridine-2-carboxylate 、
1-(4-氟苯基)哌嗪 、 在
二氯甲烷 、
水 、
Sodium sulfate-III 、 silica gel 作用下,
以
二甲基亚砜 为溶剂,
20.0~90.0 ℃
、693.27 kPa
条件下,
反应 96.0h,
以0.77 g of ethyl 9-fluoro-8-[4-(4-fluorophenyl)piperazin-1-yl]-4-methyl-1-oxo-1,4-dihydrobenzo[f][1,7]naphthyridine-2-carboxylate was obtained in the form of yellow crystals, which melted at 300° C.的产率得到ethyl 9-fluoro-8-[4-(4-fluorophenyl)piperazin-1-yl]-4-methyl-1-oxo-1,4-dihydrobenzo[f] [1,7]naphthyridine-2-carboxylate