(R)-(4-(8-chloropyrido[3,2-d]pyridazin-5-yl)-3-methylpiperazin-1-yl)(phenyl)methanone 、
disodium;carbonate 、
4-三氟甲基苯硼酸 在
四(三苯基膦)钯 作用下,
以afforded (R)-(3-methyl-4-(8-(4-(trifluoromethyl)phenyl)pyrido[3,2-d]pyridazin-5-yl)piperazin-1-yl)(phenyl)methanone 86的产率得到(R)-(3-methyl-4-(8-(4-(trifluoromethyl)phenyl)pyrido[3,2-d]pyridazin-5-yl)piperazin-1-yl)(phenyl)methanone