A Study of the Rapid Anomerization of Poly-O-benzyl-β-D-glucopyranosides with Titanium Tetrachloride
Titanium tetrachloride rapidly anomerizes methyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranoside in dichloromethane at 25 deg C.Evidence for the proposal that the benzyloxymethyl group on C-5 and the ring oxygen of the glucoside cooperate to prompt the reaction is described.The reagent anomerizes the interglycosidic linkage of several disaccharide derivatives.