tert-butyl 4-(6-bromo-3-(pyrrolidin-1-yl)pyrazin-2-yl)-1,4-diazepane-1-carboxylate 、
吡啶-4-硼酸 在
二氯甲烷 作用下,
以gradient 100% methylene chloride to 95% then 90% and finally 85% methylene chloride) provided the coupled product (200 mg, 75%) as an orange solid的产率得到tert-butyl 4-(6-(pyridin-4-yl)-3-(pyrrolidin-1-yl)pyrazin-2-yl)-1,4-diazepane-1-carboxylate