(E)-3-[4-(2,6-difluoro-phenyl amino)-6-(2-fluoro-phenyl)-2-methylsulfanyl-pyrimidin-5-yl]-acrylic acid methyl ester 、
sodium methylate 在
8-(2,6-difluorophenyl)-4-(2-fluorophenyl)-2-methoxy-8H-pyrido[2,3-d]pyrimidin-7-one 作用下,
以to afford the title compound 8-(2,6-difluoro-phenyl)-4-(2-fluoro-phenyl)-2-methoxy-8H-pyrido[2,3-d]pyrimidin-7-one的产率得到8-(2,6-difluorophenyl)-4-(2-fluorophenyl)-2-methoxy-8H-pyrido[2,3-d]pyrimidin-7-one