Diastereoselective Synthesis of 4-Hydroxypiperidin-2-ones via Cu(I)-Catalyzed Reductive Aldol Cyclization
作者:Hon Wai Lam、Gordon J. Murray、James D. Firth
DOI:10.1021/ol052599j
日期:2005.12.1
[chemical reaction: see text]. 4-Hydroxypiperidin-2-ones may be prepared in highly diastereoselective fashion using a Cu(I)-catalyzed reductive aldol cyclization of alpha,beta-unsaturated amides with ketones. Used in combination with proline-catalyzed asymmetric Mannichreactions, this methodology enables the enantioselectivesynthesis of more highly functionalized piperidin-2-ones and hydroxylated