ABSTRACT
Experimental ..........................................................................................................240 General Methods ...............................................................................................240 2-O-Acetyl-3,4,6-tri-O-benzyl-α-d-mannopyranosyl chloride (2) ...................240 1,2-Anhydro-3,4,6-tri-O-benzyl-β-d-mannopyranose (3) ................................ 241
Acknowledgments .................................................................................................. 241 References ..............................................................................................................244
the reagent. Furthermore, the concentration of the reagent is limited. The disadvantage of the latter method for epoxidation is the instability of the reagent, which can be used only in limited concentration. For large-scale preparation, the method involving epoxide formation by nucleophilic attack of alkoxide generated in situ is reliable.5,6
