Palladium-Catalyzed Intermolecular Alkenylation of Indoles by Solvent-Controlled Regioselective CH Functionalization
作者:Neil P. Grimster、Carolyn Gauntlett、Christopher R. A. Godfrey、Matthew J. Gaunt
DOI:10.1002/anie.200500468
日期:2005.5.13
C–H Alkenylation of Heteroarenes: Mechanism, Rate, and Selectivity Changes Enabled by Thioether Ligands
作者:Bradley J. Gorsline、Long Wang、Peng Ren、Brad P. Carrow
DOI:10.1021/jacs.7b03887
日期:2017.7.19
catalytic intermediate in these reactions may also account for unusual catalyst-controlled site selectivity wherein C–H alkenylation of five-atom heteroarenes can occur under electronic control with thioether ligands even when this necessarily involves reaction at a more hindered C–H bond. The thioether effect also enables short reaction times under mild conditions for many O-, S-, and N-heteroarenes (55 examples)
Pd(II)-Catalyzed CH Activation of Styrylindoles: Short, Efficient, and Regioselective Synthesis of Functionalized Carbazoles
作者:Rakesh K. Saunthwal、Monika Patel、Sonu Kumar、Abhinandan K. Danodia、Akhilesh K. Verma
DOI:10.1002/chem.201503657
日期:2015.12.14
A novel PdII‐catalyzed approach for the direct synthesis of highly functionalized carbazoles from unprotected styrylindoles has been developed. The reaction features a variety of olefin substrates, which are readily switchable by subtle tuning of the reaction conditions. Investigations of the mechanism suggest that the CHactivation proceeds via enamine formation.