6-(4-oxiranylmethoxy-phenyl)-4,5-dihydro-2H-pyridazin-3-one   、                                                                                      
异丙胺                                                                                                                                                                                              以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以to give 6-[4-(2-hydroxy-3-isopropylaminopropoxy)phenyl]-4,5-dihydro-3(2H)-pyridazinone (47.59 g, 100%), m.p. 108°-113°C的产率得到6-[4-(2-hydroxy-3-isopropylamino-propoxy)-phenyl]-4,5-dihydro-2
H-pyridazin-3-one