Highly Diastereoselective Aldol Reactions with Camphor-Based Acetate Enolate Equivalents
作者:Claudio Palomo、Mikel Oiarbide、Jesús M. Aizpurua、Alberto González、Jesús M. García、Cristina Landa、Ibon Odriozola、Anthony Linden
DOI:10.1021/jo990865z
日期:1999.10.1
New lithiumenolates of alpha-hydroxy ketones, derivedfromcamphor, are evaluated for asymmetric aldol reactions in the presence of lithium chloride. The diastereoselectivity of the reactions between the lithiumenolate of 3 and a variety of achiral aldehydes is strongly influenced by the lithium chloride salt. In these instances, the achieved levels of asymmetric induction, typically 95:5 dr, are