The Norbornene Shuttle: Multicomponent Domino Synthesis of Tetrasubstituted Helical Alkenes through Multiple CH Functionalization
作者:Kersten M. Gericke、David I. Chai、Nikolas Bieler、Mark Lautens
DOI:10.1002/anie.200805512
日期:2009.2.9
Within the proposed mechanism for the palladium‐catalyzed title reaction, the strained alkenenorbornene (or norbornadiene) enters and exits the catalytic cycle in a catalytic “square dance”, acting as both a promoter and a coupling partner in the formation of four carbon–carbon bonds, two of them by challenging CH activation processes.
Accessing Polycyclic Heteroarenes Enabled by Copper-Catalyzed Aerobic Oxidative C–H/C–H [4 + 2] Annulation of 3-Arylindole Derivatives
作者:Yuanyuan Yue、Yan Yang、Chunying Sun、Junli Chao、Yaqing Ye、Xiaohui Guo、Jianming Liu
DOI:10.1021/acs.orglett.1c03686
日期:2022.1.21
polycyclic aromatic hydrocarbons are delivered at room temperature by copper-catalyzedaerobicoxidative C–H/C–H [4 + 2] annulation of alkyl-substituted 3-arylindole derivatives. Specifically, dual aryl C–H functionalization is furnished under mild conditions through the 1,2-migration of copper catalyst and regioselective alkyne insertion. Mechanistic experiments demonstrate that the C–H bond cleavage