1,8-二氮杂双环[5.4.0]十一碳-7-烯 、
3-(4-trifluoromethylpyridin-2-yl)-1,2,4-oxadiazol-5-one 、
N,N-二乙基氯甲酰胺 在
resultant solution 、
3-(4-trifluoromethylpyridin-2-yl)-N,N-diethyl-1,2,4-oxadiazol-5-one-4-carboxamide 作用下,
以
吡啶 为溶剂,
反应 18.0h,
以to obtain 0.09 g of 3-(4-trifluoromethylpyridin-2-yl)-N,N-diethyl-1,2,4-oxadiazol-5-one-4-carboxamide (present compound (16))的产率得到3-(4-trifluoromethylpyridin-2-yl)-N,N-diethyl-1,2,4-oxadiazol-5-one-4-carboxamide