N-(1-azetidin-3-yl-cyclopropyl)-2,2,2-trifluoro-acetamide 、 1-cyclopropyl-6,7-difluoro-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid difluoroborate chelate 在
三乙胺 作用下,
以
二甲基亚砜 为溶剂,
生成 1-cyclopropyl-6-fluoro-8-methyl-4-oxo-7-{3-[1-(2,2,2-trifluoro-acetylamino)-cyclopropyl]-azetidin-1-yl}-1,4-dihydro-quinoline-3-carboxylic acid difluoroboronate ester