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
Allylic carbonates 8 bearing an electron-withdrawing ester functionality can act as substrates for palladium-catalyzed allylic 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.
带有吸电子酯官能度的烯丙基碳酸酯8可用作钯催化的烯丙基烷基化的底物或用作迈克尔受体,并可选择进行随后的闭环。螯合的氨基酸酯烯醇盐1 '是两种反应的通用亲核试剂,可提供高收率和选择性。