名称:
Organocatalytic sequential α-aminoxylation and cis-Wittig olefination of aldehydes: synthesis of enantiopure γ-butenolides
摘要:
A short route to enantiopure gamma-butenolides (up to 99% ee) has been developed from readily available starting materials. The strategy involves a sequential organocatalytic alpha-aminoxylation followed by cis-Wittig olefination of aldehydes. The utility of this protocol has been demonstrated in the asymmetric synthesis of trans-(+)-cognac lactone with high enantiomeric purity. (C) 2012 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tetasy.2012.02.004