Highly regioselective Heck reactions of heteroaryl halides with electron-rich olefins in ionic liquid
作者:Wen Pei、Jun Mo、Jianliang Xiao
DOI:10.1016/j.jorganchem.2005.03.008
日期:2005.8
Palladium-catalyzed Heck reactions of the heteroaryl halides, halopyridines, bromoquinoline and bromothiophenes, with the electron-richolefins vinyl ethers and allyl alcohol were shown to give essentially only the branched olefins in an imidazolium ionic liquid, whereas in molecular solvents a mixture of regioisomers was formed. The method obviates the need for aryl triflates and stoichiometric inorganic