3-氨基-1-苯基-2-吡唑啉-5-酮 、
3-(p-methylphenyl)-2,4-dicarboethoxy-5-hydroxy-5-methylcyclohexanone 在
potassium methanolate 作用下,
反应 10.0h,
以95%的产率得到ethyl 7-hydroxy-7-methyl-5-(4-methylphenyl)-3,4-dioxo-2-phenyl-4a,5,6,8-tetrahydro-3aH-pyrazolo[3,4-b]quinoline-6-carboxylate