Amination and [2,3]-sigmatropic rearrangement of propargylic sulfides using a ketomalonate-derived oxaziridine: synthesis of N-allenylsulfenimides
作者:Alan Armstrong、Richard S. Cooke、Stephen E. Shanahan
DOI:10.1039/b307722e
日期:——
Amination of propargylic sulfides with a ketomalonate-derived oxaziridine under metal free conditions gives N-Boc-N-allenylsulfenimides via [2,3]-sigmatropicrearrangement.
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.