1-(4-chloro-benzyl)-6,7-difluoro-4-oxo-1,4-dihydro-quinoline-3-carbonitrile 、
1-乙酰哌嗪 以gave 7-(4-acetyl-piperazin-1-yl)-1-(4-chloro-benzyl)-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carbonitrile的产率得到7-(4-acetyl-piperazin-1-yl)-1-(4-chloro-benzyl)-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carbonitrile