“Green” oxidation reactions—application to carbohydrate chemistry
Abstract
Oxidation of glycals by either methyltrioxorhenium (MTO)–hydrogen peroxide or hydrogen peroxide–acetonitrile in methanol provides direct access to methyl glycosides. The two different reagents proceed with a complementary stereochemical outcome enabling the synthesis of β-D-gluco-pyranosides or α-D-manno-pyranosides from the same carbohydrate precursor.