aDepartment of Chemistry, University of the Pacific, Stockton, California, USA bDepartment of Chemistry, University of North Dakota, Grand Forks, North Dakota, USA
Abstract:
The title reaction was observed along with cyclization in the SnCl4-promoted reaction of 2-[3,4,6-tri-O-benzyl-2-deoxy-2-(p-tolylsulfanyl)-β-D-glucopyranosyl]ethanal with pent-4-en-2-ol and this result was interpreted in terms of anchimeric assistance by sulfur to the unusual fragmentation of an intermediate alkoxycarbenium ion.