(R)-(4-(5-chloropyrido[2,3-d]pyridazin-8-yl)-3-methylpiperazin-1-yl)(phenyl)methanone 、
disodium;carbonate 、
4-氰基苯硼酸 在
四(三苯基膦)钯 作用下,
以afforded (R)-4-(8-(4-benzoyl-2-methylpiperazin-1-yl)pyrido[2,3-d]pyridazin-5-yl)benzonitrile 85 (138 mg, 32% yield)的产率得到(R)-4-(8-(4-benzoyl-2-methylpiperazin-1-yl)pyrido[2,3-d]pyridazin-5-yl)benzonitrile