4-[2'-(tert-butoxycarbonylcyclohexylamino)-4-hydroxy[2,4']bipyridinyl-6-yl]piperazine-1-carboxylic acid tert-butyl ester 、
三乙胺 、
2-[N,N-双(三氟甲烷烷磺酰)氨基]吡啶 在
二氯甲烷 、
碳酸氢钠 、 Brine 、
Sodium sulfate-III 、
tert-butyl 4-(2'-[(tert-butoxycarbonyl)(cyclohexyl)amino]-4-{[(trifluoromethyl)sulfonyl]oxy}-2,4'-bipyridin-6-yl)piperazine-1-carboxylate 、 crude intermediate 作用下,
以
二氯甲烷 为溶剂,
反应 6.0h,
以The title compound tert-butyl 4-(2′-[(tert-butoxycarbonyl)(cyclohexyl)amino]-4-{[(trifluoromethyl)sulfonyl]oxy}-2,4′-bipyridin-6-yl)piperazine-1-carboxylate (1.15 g) is obtained as a crude intermediate的产率得到tert-butyl 4-(2'-[(tert-butoxycarbonyl)(cyclohexyl)amino]-4-{[(trifluoromethyl)sulfonyl]oxy}-2,4'-bipyridin-6-yl)piperazine-1-carboxylate