Fluorous silica gel-supported perfluoro-tagged palladium nanoparticles: an efficient and reusable catalyst for direct C-2 arylation of indoles
作者:Liang Wang、Wen-bin Yi、Chun Cai
DOI:10.1039/c0cc01666g
日期:——
The preparation of FSG-supported palladiumnanoparticles and their application in direct C-2 arylation of indoles are presented. Moderate to good yields were obtained with ultra-low catalyst loading. The catalyst could be easily recovered by simple workup and reused up to seven runs with only a slight decrease in its activity.
A visible-light induced green and efficient method is developed for the synthesis of α-indolyl diethyl malonates. The reaction proceeds without any photocatalysts or ligands in a green solvent in a short time. Moreover, the reaction mechanism has been clearly studied by control experiments, spectrophotometric studies and density functional theory (DFT) calculations. The results showed that the photocatalyst-free
Pd(OAc)<sub>2</sub>-Catalyzed Regioselective Arylation of Indoles with Arylsiloxane in Acidic Medium
作者:Zunjun Liang、Bangben Yao、Yuhong Zhang
DOI:10.1021/ol101147b
日期:2010.7.16
Mild conditions have been developed to achieve a Pd(OAc)(2)-catalyzed cross-coupling between indoles and arylsiloxanes in the presence of TBAF and Ag2O in acidic medium. Electron-deficient arylsiloxanes presented high efficiency in this system to give the arylated indoles in excellent yields.
Recyclization of 2-(2-acylethyl)pyridinium salts
作者:V. I. Terenin、A. N. Rumyantsev、P. V. Nosyrev、S. P. Gromov、Yu. G. Bundel'