Chemo-, regio- and stereoselective preparation of silyl enol ethers from thiol esters and bis(iodozincio)alkane
作者:Akihiro Ooguri、Zenichi Ikeda、Seijiro Matsubara
DOI:10.1039/b709456f
日期:——
Treatment of thiolester with bis(iodozincio)alkane in the presence of palladium catalyst followed by silylation affords Z-silyl enol ether chemo-, regio- and stereoselectively.
The palladium catalyzed cross-coupling reaction of thiolesters with bis(iodozincio)methane or 1,1-bis(iodozincio)ethane gave Reformatsky-type enolates. They can react with some electrophiles to give the corresponding adducts and were also trapped by silylation reagents to afford silyl enol ethers. As the method applicable to the thiolester carrying ketone moiety, it afforded zinc enolates carrying