Tert-butyl 4-({6'-[(ethylcarbamoyl)amino]-5-(hydrazinylcarbonyl)-4'-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3'-bipyridin-2-yl}oxy)piperidine-1-carboxylate 、
光气 在
ethyl acetate pet ether 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以to afford 0.2 g (64.9%) of tert-butyl 4-({6′-[(ethylcarbamoyl)amino]-5-(5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-4′-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3′-bipyridin-2-yl}oxy)piperidine-1-carboxylate的产率得到tert-butyl 4-({6'-[(ethylcarbamoyl)amino]-5-(5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-4'-[4-(trifluoromethyl)-1,3-thiazol-2-yl]-3,3'-bipyridin-2-yl}oxy)piperidine-1-carboxylate