Enantioselective Synthesis of Allenamides via Sulfimide [2,3]-Sigmatropic Rearrangement
作者:Alan Armstrong、Daniel P. G. Emmerson
DOI:10.1021/ol900146s
日期:2009.4.2
Chiral allenamides are prepared with high levels of enantiomeric purity by [2,3]-sigmatropic rearrangement of propargylic sulfimides. The required branched propargylic sulfides are prepared by an enantioselectiveorganocatalytic aldehyde α-sulfenylation followed by Corey−Fuchs alkynylation.