Allylations of Chelated Enolates Using Dienyl Substrates
作者:Sankar Basak、Uli Kazmaier
DOI:10.1021/ol702865q
日期:2008.2.1
Isomerization-free reactions of dienyl carbonates (1-3) with chelated amino acid ester enolates at -78 degrees C provide important information concerning the mechanism of these dienylations. The formation of regioisomeric products can be explained by competing SN2/SN2' reactions, and the product distribution can be influenced by proper choice of the reaction conditions.