Direct Umpolung of Glycals and Related 2,3-Unsaturated<i>N</i>-Acetylneuraminic Acid Derivatives Using Samarium Diiodide
作者:Tien Xuan Le、Caroline Papin、Gilles Doisneau、Jean-Marie Beau
DOI:10.1002/anie.201402891
日期:2014.6.10
The umpolung of glycals with samariumdiiodide offers a simple route to novel carbohydrate‐derived nucleophilic reagents in a single step using a readily available reductant. The corresponding allyl samarium reagent that arises from the hexose series reacts with ketones at the C3 position with high stereoselectivity; carbon–carbon bond formation takes place only anti to the substituent at the C4 position
[EN] 3-DEOXY-2-KETONIC ACID NITROGEN-CONTAINING DERIVATIVE, PREPARATION METHOD THEREFOR, AND USE THEREOF<br/>[FR] DÉRIVÉ CONTENANT DE L'AZOTE D'ACIDE 3-DÉSOXY-2-CÉTONIQUE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 3-去氧-2-酮糖酸含氮衍生物及其制备方法和用途