4-(5-amino-pyridin-3-yl)-2-chloro-benzonitrile   、                                                                                      
4-氟苯基甲磺酰氯                                                                                                                                                              在
                                                                                                                                                                                 crude product   、                                                                                                  SiO2   、                                                                                                  
methanol-dichloromethane                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
吡啶                                                                                  为溶剂,
                                                                                                                                                                                        以to give N-[5-(3-chloro-4-cyano-phenyl)-pyridin-3-yl]-1-(4-fluoro-phenyl)-methanesulfonamide (8.2 mg, >95% purity, yield: 23.4%)的产率得到N-[5-(3-chloro-4-cyanophenyl)-pyridin-3-yl]-1-(4-fluorophenyl)methanesulfonamide