1-(2-chloro-3,6-difluoro-benzyl)-7-iodo-1,2,3,4-tetrahydro-pyrido[2,3-b]pyrazine 、
2-氯-5-(4,4,5,5-四甲基-1,3,2-二氧硼烷)吡啶 以to give the title compound (50% yield)的产率得到1-(2-chloro-3,6-difluorobenzyl)-7-(2-chloropyridin-4-yl)-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine