Ionic Liquid-Promoted, Highly Regioselective Heck Arylation of Electron-Rich Olefins by Aryl Halides
作者:Jun Mo、Lijin Xu、Jianliang Xiao
DOI:10.1021/ja0450861
日期:2005.1.1
arylation reaction in molecular solvents led to mixtures of regioisomers under similar conditions. Several lines of evidence point to the unique regiocontrol stemming from the ionic environment provided by the ionic liquid that alters the reaction pathway. The chemistry provides a simple, effective method for preparing branched, arylated olefins and contributes to the extension of Heckreaction to a wider
Significant Enhancement of the Stille Reaction with a New Combination of Reagents—Copper(I) Iodide with Cesium Fluoride
作者:Simon P. H. Mee、Victor Lee、Jack E. Baldwin
DOI:10.1002/chem.200401162
日期:2005.5.20
The combination of copper(I) iodide and cesiumfluoridesignificantlyenhances the Stillereaction. After extensive optimisation, a variety of electronically unfavourable and sterically hindered substrates were coupled in very high yields under mild conditions.
The Heck Reaction of Electron-Rich Olefins with Regiocontrol by Hydrogen-Bond Donors
作者:Jun Mo、Jianliang Xiao
DOI:10.1002/anie.200600799
日期:2006.6.19
Air-Stable Trialkylphosphonium Salts: Simple, Practical, and Versatile Replacements for Air-Sensitive Trialkylphosphines. Applications in Stoichiometric and Catalytic Processes
作者:Matthew R. Netherton、Gregory C. Fu
DOI:10.1021/ol016971g
日期:2001.12.1
[GRAPHICS]Trialkylphosphines furnish unusual, sometimes unique, reactivity in a range of transformations. Unfortunately, their utility is compromised by their sensitivity to oxidation, We have examined a simple but powerful strategy for addressing this problem: convert air-sensitive trialkylphosphines into air-stable phosphonium salts via protonation on phosphorus. These robust salts serve as direct replacements for the corresponding phosphines (simple deprotonation under the reaction conditions by a Bronsted base liberates the trialkylphosphine) in a diverse set of applications.