2-氯-5-环丙基嘧啶   、                                                                                      1-(3,4-dichlorophenyl)-6-oxo-4-(piperidin-4-yloxy)-1,6-dihydropyridazine-3-carbonitrile hydrochloride                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N-甲基吡咯烷酮                                                                                  为溶剂,
                                                                                                                                                                                        以38.8%的产率得到4-(1-(5-cyclopropylpyrimidin-2-yl)piperidin-4-yloxy)-1-(3,4-dichlorophenyl)-6-oxo-1,6-dihydropyridazine-3-carbonitrile