5-氨基四氮唑 、
diethyl 2-(3-nitrophenyl)-4-hydroxy-6-oxo-4-methylcyclohexane-1,3-dicarboxylate 在
potassium methanolate 作用下,
反应 10.0h,
以47%的产率得到7-Hydroxy-7-methyl-5-(3-nitro-phenyl)-4-oxo-4,4a,5,6,7,8-hexahydro-1,2,3,3a,9-pentaaza-cyclopenta[b]naphthalene-6-carboxylic acid ethyl ester