2-bromo-3-butyl-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one 、
2-bromo-3-methyl-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one 、
2-(3-cyclopropoxy-4-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 、
2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane 以whereby 537 mg of the title compound was obtained as a brownish oil的产率得到3-butyl-2-(3-cyclopropoxy-4-methoxyphenyl)-1,5-bis-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]-pyridazin-4-one