4-(N'-4-chlorophenylureido)-7,7-dimethyl-1-phenyl-7,8-di-hydroquinazoline-2,5(1H,6H)-dione 在
sodium methylate 、
溶剂黄146 作用下,
以
甲醇 为溶剂,
反应 0.17h,
以67%的产率得到6-(4-chlorophenyl)-8,8-dimethyl-1-phenyl-7,8-dihydro-1H-pyrimido-[4,5,6-de]quinazoline-2,5(3H,6H)-dione