2-methyl-2,5-diazabicyclo[2.2.1]heptane dihydrochloride 、
1-(2,4-difluorophenyl)-6,7,8-trifluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acid 在
吡啶 作用下,
反应 18.0h,
以45%的产率得到1-(2,4-Difluoro-phenyl)-6,8-difluoro-7-((1S,4S)-5-methyl-2,5-diaza-bicyclo[2.2.1]hept-2-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid