2,4-dichloro-8-(4-bromophenyl)-7,8-dihydro-5H-pyrano[4,3-d]pyrimidine 、
盐酸甲胺 以to give 8-(4-bromophenyl)-2-chloro-N-methyl-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-4-amine (210 mg, 0.592 mmol, 42.6% yield)的产率得到8-(4-bromophenyl)-2-chloro-N-methyl-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-4-amine