Metallorganisch modifizierte Zucker. 26 [1] L.Iminoglycosyliden‐Komplexe — eine flexible metallorganische Route zu variabel funktionalisierten L.Iminozuckerderivaten

Abstract

Organometallic Modified Sugars. 26. L.Iminoglycosylidene Complexes — A Flexible Organometallic Route to Variably Functionalized L.Iminosugar Derivatives A straightforward two‐step chromium carbene strategy has been designed for the synthesis of L.iminopyranosylidene complexes from stannylated glycals based on a transmetalation for the introduction of a pentacarbonylchromium moiety via a vinyl chromate intermediate. The synthetic utility of these novel organometallic sugars is demonstrated by a convenient deprotonation/demetalation protocol to afford cyclic enamides as valuable functionalized carbohydrate building blocks.