2-(4-Dimethylamino-phenyl)-4-hydroxy-4-methyl-6-oxo-cyclohexane-1,3-dicarboxylic acid diethyl ester 、
硫脲 在
乙醇 、
sodium ethanolate 作用下,
生成 5-(4-Dimethylamino-phenyl)-7-methyl-4-oxo-2-thioxo-2,3,4,4a,5,6-hexahydro-quinazoline-6-carboxylic acid ethyl ester