7-chloro-1-(2,4-difluorophenyl)-1,4-dihydro-8-methyl-6-nitro-4-oxoquinolone-3-carboxylic acid 、
5-氯-1,3-二氢-1-(4-哌啶基)-2H-苯并咪唑-2-酮 在
potassium carbonate 作用下,
以
二甲基亚砜 为溶剂,
以91%的产率得到7-(4-(6-chloro-1,2-dihydro-2-oxobenzo[d]imidazol-3-yl)piperidin-1-yl)-1-(2,4-difluorophenyl)-1,4-dihydro-8-methyl-6-nitro-4-oxoquinoline-3-carboxylic acid