重氮甲烷 、 (S)-7-(2-carboxypyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-8-nitro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid 以
乙醚 为溶剂,
反应 0.33h,
以91%的产率得到methyl (S)-1-cyclopropyl-6-fluoro-7-[2-(methoxycarbonyl)pyrrolidin-1-yl]-8-nitro-4-oxo-1,4-dihydroquinoline-3-carboxylate