5-[1-(2-bromo-phenylamino)-ethyl]-2-methylsulfanyl-pyrimidin-4-yl-methyl-amine 、
N,N'-羰基二咪唑 在
sodium hydride 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
生成 3-(2-bromo-phenyl)-1,4-dimethyl-7-methylsulfanyl-3,4-dihydro-1H-pyrimido[4,5-d]pyrimidin-2-one 、 3-(2-bromo-phenyl)-1,4-dimethyl-7-methylsulfanyl-3,4-dihydro-1H-pyrimido[4,5-d]pyrimidin-2-one