ethyl 7,8-diamino-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylate 、
5-(bis(methylthio)methylene)pyrimidine-2,4,6(1H,3H,5H)-trione 以
乙醇 为溶剂,
反应 12.0h,
以51%的产率得到ethyl 9-cyclopropyl-4-fluoro-6-oxo-2-(2,4,6-trioxotetrahydropyrimidin-5(6H)-ylidene)-2,3,6,9-tetrahydro-1H-imidazo[4,5-h]quinoline-7-carboxylate