2-(acetylacetonethio)-5-(4-chlorophenyl)-9-(4-chlorophenylmethylene)-6,7,8,9-tetrahydropyrimido[4,5-b]quinolin-4-one 、
硫脲 在
哌啶 作用下,
以
1,4-二氧六环 为溶剂,
反应 15.0h,
以60%的产率得到2-(4,6-dimethyl-2-thioxo-1,2-dihydropyrimidin-5-ylthio)-9-(4-chloro-phenylmethylene)-5-(4-chlorophenyl)-6,7,8,9-tetrahydropyrimido[4,5-b]quinolin-4-one