3-氨基-5-苯基吡唑 、
乙酰基丙二酸二乙酯 在
乙醇 作用下,
以
溶剂黄146 为溶剂,
反应 3.0h,
以to give ethyl 7-hydroxy-5-methyl-2-phenylpyrazolo[1,5-a]pyrimidine-6-carboxylate (2.73 g, Y.:92%) as white crystals的产率得到ethyl 7-hydroxy-5-methyl-2-phenyl-1,3a-dihydropyrazolo[1,5-a]pyrimidine-6-carboxylate