Allylic Alkylation versus Michael Induced Ring Closure: Chelated Enolates as Versatile Nucleophiles
作者:Matthias Pohlman、Uli Kazmaier、Thomas Lindner
DOI:10.1021/jo049036q
日期:2004.10.1
Allyliccarbonates 8 bearing an electron-withdrawing ester functionality can act as substrates for palladium-catalyzedallylic alkylations or as Michael acceptors with the option to undergo subsequent ring closure. Chelated amino acid ester enolates 1‘ are versatile nucleophiles for both reactions giving high yields and selectivites.