5-(3-ethylbenzo[d]isoxazol-6-yl)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carbonitrile 、
硫酸 在
5-(3-ethylbenzo[d]isoxazol-6-yl)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carboxamide 作用下,
以
ice water 为溶剂,
反应 1.0h,
以This resulted in 700 mg (94%) of 5-(3-ethylbenzo[d]isoxazol-6-yl)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carboxamide as a yellow solid的产率得到5-(3-ethylbenzo[d]isoxazol-6-yl)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carboxamide