1-环丙基-6,7,8-三氟-4-氧代-1,4-二氢喹啉-3-羧酸   、                                                                                      
N-(3-哌啶基甲基)乙酰胺                                                                                                                                                                                              以
                                                                                         
三乙胺                                                                                  为溶剂,
                                                                                                                                                    反应 6.0h,
                                                                                                                以to give 7-(3-acetamidomethylpiperidin-1-yl)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (3.5 g)的产率得到7-(3-acetamidomethylpiperidin-1-yl)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid