1-ethoxycarbonylmethyl-6-oxo-1,6-dihydro-pyridine-3-carbonyl chloride 、
6-(3-pyridin-3-yl-5-trifluoromethyl-pyrazol-1-yl)-pyridin-3-ylamine 在
乙酸乙酯 、
水 、
碳酸氢钠 、
氯化铵 、
magnesium sulfate 作用下,
以
吡啶 为溶剂,
反应 1.0h,
以to afford {2-oxo-5-[6-(3-pyridin-3-yl-5-trifluoromethyl-pyrazol-1-yl)-pyridin-3-ylcarbamoyl]-2H-pyridin-1-yl}-acetic acid ethyl ester (521 mg, 62%)的产率得到{2-oxo-5-[6-(3-pyridin-3-yl-5-trifluoromethyl-pyrazol-1-yl)-pyridin-3-ylcarbamoyl]-2H-pyridin-1-yl}-acetic acid ethyl ester