Enantioselective Synthesis of Spiroindenes by Enol‐Directed Rhodium(III)‐Catalyzed CH Functionalization and Spiroannulation
作者:Suresh Reddy Chidipudi、David J. Burns、Imtiaz Khan、Hon Wai Lam
DOI:10.1002/anie.201507029
日期:2015.11.16
rhodium complexes promote highly enantioselective enol‐directedC(sp2)‐Hfunctionalization and oxidative annulation with alkynes to give spiroindenes containing all‐carbon quaternary stereocenters. High selectivity between two possible directing groups, as well as control of the direction of rotation in the isomerization of an O‐bound rhodium enolate into the C‐bound isomer, appear to be critical for high