1-tert-butyl-7-chloro-1-1,4-dihydro-8-methyl-6-nitro-4-oxoquinolone-3-carboxylic acid   、                                                                                      
5-氯-1,3-二氢-1-(4-哌啶基)-2H-苯并咪唑-2-酮                                                                                                                                                              在
                                                                                                                                                                                 
potassium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二甲基亚砜                                                                                  为溶剂,
                                                                                                                                                                                        以89%的产率得到1-tert-butyl-7-(4-(6-chloro-1,2-dihydro-2-oxobenzo[d]imidazol-3-yl)piperidin-1-yl)-1,4-dihydro-8-methyl-6-nitro-4-oxoquinoline-3-carboxylic acid