An oxidative annulation of 2-arylindazoles with cyclic enoneshas was developed using Rh(III)/Cu(OAc)2 catalytic system for the first time to produce 3,4-dihydroindazolo[2,3-f]phenanthridin-1(2H)-one derivatives in good yields with high selectivity. When AgSbF6 was used instead of Cu(OAc)2, the corresponding uncyclized products, 3-(2-(2H-indazol-2-yl)phenyl)cyclohexan-1-one scaffolds were formed exclusively
首次使用Rh(III)/Cu(OAc) 2催化体系开发了2-芳基吲唑与环状烯酮的氧化环化反应,制备了3,4-二氢吲唑并[2,3 - f ]菲啶-1(2 H ) -一种具有高选择性的高产率衍生物。当使用 AgSbF 6代替 Cu(OAc) 2 时,专门形成了相应的未环化产物 3-(2-(2H-indazol-2-yl)phenyl)cyclohexan-1-one 支架。