Methyl 3-((3-cyano-5-(3,5-dimethylisoxazol-4-yl)phenyl)amino)-2-fluorobenzoate 、
potassium carbonate 在
三甲基乙酸 、 silica gel 、
ethyl acetate dichloromethane 作用下,
以
三甲基乙酸 为溶剂,
反应 48.0h,
以to give methyl 5-cyano-7-(3,5-dimethylisoxazol-4-yl)-1-fluoro-9H-carbazole-2-carboxylate (2.86 g, 8.87 mmol, 38.3% yield) as a tan solid的产率得到methyl 5-cyano-7-(3,5-dimethylisoxazol-4-yl)-1-fluoro-9H-carbazole-2-carboxylate