1-Boc-4-氨基哌啶   、                                                                                      
2-氟-5-溴苯腈                                                                                                                                                              在
                                                                                                                                                                                 
碳酸氢钠   、                                                                                                  Brine   、                                                                                                  
magnesium sulfate   、                                                                                                  Ethyl acetate hexane methylene-chloride   、                                                                                                  
tert-butyl 4-(4-bromo-2-cyanophenylamino)piperidine-1-carboxylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
氯仿                                                                                  为溶剂,
                                                                                                                                                    反应 20.0h,
                                                                                                                以Flash chromatography with 25:10:65 and 35:10:55 EtOAc-CH2Cl2-Hexane of the concentrated organic layers gave the desired product, tert-butyl 4-(4-bromo-2-cyanophenylamino)piperidine-1-carboxylate as a light yellow glassy foam的产率得到tert-butyl 4-(4-bromo-2-cyanophenylamino)piperidine-1-carboxylate