Rhodium-Catalyzed [(3+2)+2] Carbocyclization of Alkynylidenecyclopropanes with Substituted Allenes: Stereoselective Construction of Tri- and Tetrasubstituted Exocyclic Olefins
作者:P. Andrew Evans、Daniela E. Negru、Deju Shang
DOI:10.1002/anie.201410857
日期:2015.4.13
distal terminus to generate tri‐ and tetrasubstituted exocyclic olefins with a neutral rhodium catalyst. In addition, this method provides a strategy for the total synthesis of the guaiane family of sesquiterpenes, which are not directly accessible using alkynes as exogenous π‐components. Finally, the preparation of the bicyclo[5.4.0]undecane ring system using a homologated ACP tether serves to further