methyl {3-[4-cyclopropyl-2-(trifluoromethyl)phenyl]-5-isoxazolyl}[2-(2,3-difluorophenyl)-5H-imidazo[4,5-d]pyridazin-5-yl]acetate   、                                                                                      
三乙胺   、                                                                                      
乙酸乙酯   、                                                                                      
溶剂黄146                                                                                                                                                              在
                                                                                                                                                                                 
氯化钠   、                                                                                                  
乙酸乙酯   、                                                                                                  heptanes   、                                                                                                  ethyl acetate heptane   、                                                                                                  24(2-hydroxyethyl)oxy                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二乙二醇                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以to afford 362 g (73%) of 24(2-hydroxyethyl)oxy]ethyl{3-[4-cyclopropyl-2-(trifluoromethyl)phenyl]-5-isoxazolyl}[2-(2,3-difluorophenyl)-5H-imidazo[4,5-d]pyridazin-5-yl]acetate as a tan solid的产率得到Ethyl {3-[4-cyclopropyl-2-(trifluoromethyl)phenyl]-5-isoxazolyl}[2-(2,3-difluorophenyl)-5H-imidazo[4,5-d]pyridazin-5-yl]acetate