Divergent synthesis of fused N-heterocycles<i>via</i>rhodium-catalysed [4 + 2] cyclization of pyrazolidinones with iodonium ylides
Run Li, Ye‐Xing Hou, Ji-Hang Xu, Yang Gao, Xiao‐Qiang Hu
Abstract
We developed a catalytic system-controlled tunable strategy for the divergent synthesis of cinnolines and pyrazolo[1,2- a ]cinnolines via the rhodium-catalyzed [4 + 2] cyclization of easily available pyrazolidinones and iodonium ylides.
Topics & Concepts
RhodiumChemistryCatalysisCombinatorial chemistryDivergent synthesisOrganic chemistryMedicinal chemistryCatalytic C–H Functionalization MethodsCyclopropane Reaction MechanismsSynthesis and Catalytic Reactions