(R)-(4-(5-chloropyrido[2,3-d]pyridazin-8-yl)-3-methylpiperazin-1-yl)(phenyl)methanone   、                                                                                      
disodium;carbonate   、                                                                                      
4-氰基苯硼酸                                                                                                                                                              在
                                                                                                                                         
四(三苯基膦)钯                                                                                                                                                                          作用下,
                                                                                                                                                                                                                            以afforded (R)-4-(8-(4-benzoyl-2-methylpiperazin-1-yl)pyrido[2,3-d]pyridazin-5-yl)benzonitrile 85 (138 mg, 32% yield)的产率得到(R)-4-(8-(4-benzoyl-2-methylpiperazin-1-yl)pyrido[2,3-d]pyridazin-5-yl)benzonitrile