HIGHLY STEREOSELECTIVE PREPARATION OF ALPHA-GLUCOSIDES UTILIZING ANOMERIZATION REACTION WITH MGBR2-CENTER-DOT-OET2 AND A CATALYTIC AMOUNT OF TITANIUM(IV)TETRAHALIDES
T. Mukaiyama et al., HIGHLY STEREOSELECTIVE PREPARATION OF ALPHA-GLUCOSIDES UTILIZING ANOMERIZATION REACTION WITH MGBR2-CENTER-DOT-OET2 AND A CATALYTIC AMOUNT OF TITANIUM(IV)TETRAHALIDES, Chemistry Letters, (7), 1997, pp. 625-626
The anomerization reactions of several beta-D-glucopyranosides proceed
smoothly in the coexistence of MgBr2 . OEt2 and a catalytic amount of
titanium(IV)halides to afford the corresponding alpha-D-glucopyranosi
des. The desired alkyl alpha-glucosides and alpha-anomer of disacchari
des such as Glc alpha 1-6Glc were obtained in high yields with high st
ereoselectivities.