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Hydrogenation arabinonic acid

A convenient and high-yielding method for the synthesis of crystalline sodium D-arabinonate involves oxidation of D-glucose with oxygen in alkaline methanol-water mixtures. Conditions have been optimised for the catalytic hydrogenation of D-Jcy/o-5-hexulosonic acid so as to give a 3 1 preponderance of L-idonic acid over D-gluconic acid in a very efficient reaction. ... [Pg.182]

Dibromo-2,5 -dideoxy-D-lyxono-1,4-lactone (14) was produced on treatment of ammonium D-xylonate with hydrogen bromide in acetic acid, and on hydrogenolysis (Pd/C-Et N) it gave firstly the 5-bromide (15), then the 3-hydroxypentanoic acid (16). Similar treatment of potassium D-arabinonate gave approximately equal amounts of the D-arabino-5-bromide the L-lyxo-enantiomer... [Pg.85]

See other pages where Hydrogenation arabinonic acid is mentioned: [Pg.60]    [Pg.591]    [Pg.54]    [Pg.9]    [Pg.167]    [Pg.174]    [Pg.175]    [Pg.55]    [Pg.48]    [Pg.108]    [Pg.48]    [Pg.177]    [Pg.127]   
See also in sourсe #XX -- [ Pg.55 ]



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Arabinon

Arabinonic acid

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