Aminals as Substrates for Sulfur Ylides: A Synthesis of Functionalized Aziridines and <i>N</i>-Heterocycles
作者:Christoforos G. Kokotos、Varinder K. Aggarwal
DOI:10.1021/ol070507f
日期:2007.5.1
Sulfur ylides stabilized by Ar, vinyl, or amide groups react with five-membered-ring tert-butylsulfinyl aminals to give functionalized chiral, nonracemic aziridines in high yield and with good selectivities ( up to 15:1 trans: cis, up to > 95: 5 trans dr, always > 95:5 cis dr). The intermediate aziridines can be converted into pyrrolidines or piperidines depending on the reaction conditions.
The Use of Vinyl Sulfonium Salts in the Stereocontrolled Asymmetric Synthesis of Epoxide- and Aziridine-Fused Heterocycles: Application to the Synthesis of (−)-Balanol
作者:Matthew G. Unthank、Nigel Hussain、Varinder K. Aggarwal