InCl<sub>3</sub>-Catalyzed Rapid 1,3-Alkoxy Migration in Glycal Ethers: Stereoselective Synthesis of Unsaturated α-<i>O</i>-Glycosides and an α,α-(1→1)-Linked Disaccharide
作者:Paramathevar Nagaraj、Namakkal G. Ramesh
DOI:10.1002/ejoc.200800453
日期:2008.9
facile stereoselective 1,3-migration of allylic ethers of glycals to afford 2-C-methylene- and 2,3-unsaturated-α-O-glycosides in high yields. The reaction is rapid (10 min), requires only 20 mol-% of the catalyst, and is compatible with acid-labile functional groups such as epoxides and acetals. This methodology provides a convenient alternative to the Ferrier rearrangement. A direct synthesis of an