Synthesis and Reactivity of Enantiomerically Enriched Thiiranium Ions
作者:Scott E. Denmark、Thomas Vogler
DOI:10.1002/chem.200901377
日期:2009.11.2
Enantiomericallyenrichedthiiraniumion 5 has been prepared by silver‐assisted ionization of chloro sulfide 4 at −20 °C. This thiiraniumion is configurationally stable in solution up to room temperature as demonstrated by the stereospecific capture of the ion by various oxygen‐ and nitrogen‐based nucleophiles. Both isolated olefins and weak Lewis bases can promote the racemization of 5 but these