Showing papers on "Koenigs–Knorr reaction published in 2002"

TL;DR: In this article, the authors show that the product obtained from a given reaction can be optimized by careful choice of the donor, NPOE or related NPG AC, and careful attention to reaction conditions, electrophilic promoter, "size" of the glycosyl acceptor, and experimental protocol.

TL;DR: The mild, moisture-stable and cheap catalyst Yb(OTf) 3 activates glycosyl N -phenyl trifluoroacetimidates in the stereoselective synthesis of 1,2- trans and 1, 2- cis glycosides as mentioned in this paper.

TL;DR: Readily accessible unsymmetrical N,N'-bis(glycosyl)thioureas can be desulfurated and transformed into the corresponding carbodiimides using HgO in CHCl(3)/water at room temperature.

TL;DR: These glycosyl α-hydroxyesters are used as chiral precursors for the diastereoselective synthesis of glycosYL α-aminoesters synthons.