methyl {3-[4-cyclopropyl-2-(trifluoromethyl)phenyl]-5-isoxazolyl}[2-(2,3-difluorophenyl)-5H-imidazo[4,5-d]pyridazin-5-yl]acetate 、
三乙胺 、
乙酸乙酯 、
溶剂黄146 在
氯化钠 、
乙酸乙酯 、 heptanes 、 ethyl acetate heptane 、 24(2-hydroxyethyl)oxy 作用下,
以
二乙二醇 为溶剂,
反应 2.0h,
以to afford 362 g (73%) of 24(2-hydroxyethyl)oxy]ethyl{3-[4-cyclopropyl-2-(trifluoromethyl)phenyl]-5-isoxazolyl}[2-(2,3-difluorophenyl)-5H-imidazo[4,5-d]pyridazin-5-yl]acetate as a tan solid的产率得到Ethyl {3-[4-cyclopropyl-2-(trifluoromethyl)phenyl]-5-isoxazolyl}[2-(2,3-difluorophenyl)-5H-imidazo[4,5-d]pyridazin-5-yl]acetate