The Stereochemical Course of Intramolecular Michael Reactions
作者:Eugene E. Kwan、Jonathan R. Scheerer、David A. Evans
DOI:10.1021/jo302138z
日期:2013.1.4
We present a general model for understanding the stereochemicalcourse of intramolecular Michael reactions. We show that the addition of β-ketoester enolates to α,β-unsaturated esters and imides bearing adjacent stereocenters (X, Y = H, Me, OR) leads to high levels of asymmetric induction. Reinforcing and nonreinforcing stereochemical relationships are evaluated from the syn and anti reactant diastereomers