acetic acid 2-(6-tert-butyl-1-oxo-1H-phthalazin-2-yl)-6-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)benzyl ester   、                                                                                      
6-chloro-4-{5-[2-(3,3-difluoroazetidin-1-yl)-1,1-dimethylethoxy]pyridin-2-ylamino}-2-methyl-2H-pyridazin-3-one                                                                                                                                                              在
                                                                                                                                                                                 
potassium phosphate   、                                                                                                  bis(dibenzylideneacetone)-palladium
(0)   、                                                                                                  
2-二环己基磷-2,4,6-三异丙基联苯                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
水   、                                                                                         
正丁醇                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以130 mg的产率得到6-tert-butyl-2-[3-(5-{5-[2-(3,3-difluoroazetidin-1-yl)-1,1-dimethylethoxy]pyridin-2-ylamino}-1-methyl-6-oxo-1,6-dihydropyridazin-3-yl)-2-hydroxymethylphenyl]-2H-phthalazin-1-one