(E)-5-(4-chloro-3-(2,2,2-trifluoroethoxy)phenyl)-N-(1-(dimethylamino)ethylidene)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carboxamide 、
1,4-二氧六环 、
盐酸羟胺 、
溶剂黄146 在
5-[4-chloro-3-(2,2,2-trifluoroethoxy)phenyl]-3-(3-methyl-1,2,4-oxadiazol-5-yl)-4H,7H-pyrazolo[1,5-a]pyrimidin-7-one 作用下,
以
sodium hydroxide 为溶剂,
反应 1.0h,
以This resulted in 29.4 mg (7%) of 5-[4-chloro-3-(2,2,2-trifluoroethoxyl)phenyl]-3-(3-methyl-1,2,4-oxadiazol-5-yl)-4H,7H-pyrazolo[1,5-a]pyrimidin-7-one as a light yellow solid的产率得到5-[4-chloro-3-(2,2,2-trifluoroethoxy)phenyl]-3-(3-methyl-1,2,4-oxadiazol-5-yl)-4H,7H-pyrazolo[1,5-a]pyrimidin-7-one