Jm. Mao et al., STUDIES ON GLYCOSIDES .14. STEREOSELECTIVITY AND REACTIVITY OF NEW C1LEAVING GROUP TRICHLOROACETOXYL IN GLYCOSYLATION REACTION, Synthetic communications, 25(10), 1995, pp. 1563-1565
2,3,4,6-O-Tetrabenzyl-1-alpha-D-galactopyransyl trichloroacete (2) rea
cted with a series of nucleophiles in the presence of BF3 . OEt(2) or
TMSOTf to give O-, S-galactopyranosides and galactopyranosyl carboxyla
tes stereoselectively in high yields.