(R)-(4-(5-chloropyrido[2,3-d]pyridazin-8-yl)-3-methylpiperazin-1-yl)(phenyl)methanone 、
4-氯-2-氟苯硼酸 、
disodium;carbonate 在
四(三苯基膦)钯 作用下,
以afforded ((R)-4-(5-(4-chloro-2-fluorophenyl)pyrido[2,3-d]pyridazin-8-yl)-3-methylpiperazin-1-yl)(phenyl)methanone 83的产率得到((R)-4-(5-(4-chloro-2-fluorophenyl)pyrido[2,3-d]pyridazin-8-yl)-3-methylpiperazin-1-yl)(phenyl)methanone