A generalized procedure for the one??pot preparation of glycosyl azides and thioglycosides directly from unprotected reducing sugars under phase??transfer reaction …

R Kumar, P Tiwari, PR Maulik…

文献索引：Kumar, Rishi; Tiwari, Pallavi; Maulik, Prakas R.; Misra, Anup K. European Journal of Organic Chemistry, 2006 , # 1 p. 74 - 79

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被引用次数: 19

摘要

Abstract Per-O-acetylated glycosyl azides and thioglycosides were prepared in excellent yield directly from unprotected reducing sugars through in situ generation of per-O- acetylated glycosyl bromides by a generalized one-pot procedure under phase-transfer conditions. Stereoselective products were formed with complete inversion at the anomeric centers of the glycosyl bromides to provide a general high-yielding procedure for the ...