Stereoselective Formation of α-Quaternary Stereocenters in the Mannich Reaction
作者:Erica A. Tiong、James L. Gleason
DOI:10.1021/ol802643k
日期:2009.4.16
Condensation of α,α-disubstituted lithium enolates derivedfrom bicyclic thioglycolate lactams with benzenesulfonyl imines affords Mannich addition products with excellent diastereoselectivity. Cleavage of the auxiliary under hydrolytic or reducing conditions affords β-amino acids and alcohols, respectively.