6-(3,4-dimethylanilino)-5-[[6-(3,4-dimethylanilino)-3-methyl-2,4-dioxo-1H-pyrimidin-5-yl]-phenylmethyl]-3-methyl-1H-pyrimidine-2,4-dione 在
偶氮二甲酸二乙酯 作用下,
以
环丁砜 为溶剂,
反应 1.0h,
以61%的产率得到10-(3,4-Dimethyl-phenyl)-3-methyl-10H-pyrimido[4,5-b]quinoline-2,4-dione