3-氨基-1,2,4-三氮唑 、
diethyl 2-(3-nitrophenyl)-4-hydroxy-6-oxo-4-methylcyclohexane-1,3-dicarboxylate 在
potassium methanolate 作用下,
反应 10.0h,
以59%的产率得到8-Hydroxy-8-methyl-6-(3-nitro-phenyl)-5-oxo-5,5a,6,7,8,9-hexahydro-[1,2,4]triazolo[3,4-b]quinazoline-7-carboxylic acid ethyl ester