2,5-dioxopyrrolidin-1-yl 1-methylcyclobutyl carbonate 、 4-((1r,4r)-4-(piperidin-4-yloxy)cyclohexyloxy)nicotinonitrile dihydrochloride 在
三乙胺 作用下,
以
四氢呋喃 为溶剂,
以31.9%的产率得到1-methylcyclobutyl 4-((1r,4r)-4-(3-cyanopyridin-4-yloxy)cyclohexyloxy)piperidine-1-carboxylate