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Mannitol acetolysis

Following the observation that benzyl ethers are cleaved by acetic anhydride in the presence of sulfuric acid or perchloric acid, Allerton and Fletcher S extended the work to carbohydrate systems. 2,5-Di-O-benzyl-l,3 4,6-di-0-methylene-D-mannitol (12) gave 1,3,4,6-tetra-0-acetyl-2, 5-di-O-benzyl-D-mannitol in the presence of 0.09% of sulfuric acid, but, with 2.4% of the acid, the hexaacetate was formed. With 1,6-di-O-benzyl-2,4 3,5-di-0-methylene-L-iditol (13), brief acetolysis gave the di-0-acetyl-di-O-methylene derivative longer treatment gave the hexaacetate. [Pg.15]

Acetolysis of 1,4 3,6-dianhydro-2,5-di-0-benzyl-D-mannitol gave a product which has yet to be fully characterized. ... [Pg.16]

See other pages where Mannitol acetolysis is mentioned: [Pg.22]    [Pg.25]    [Pg.45]    [Pg.399]    [Pg.168]    [Pg.179]    [Pg.185]    [Pg.75]    [Pg.76]    [Pg.139]    [Pg.329]   
See also in sourсe #XX -- [ Pg.45 ]



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