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Dicarboxylic acids produced by oxygen-alkali treatment of birch xylan

Lars Löwendahl (Institutionen för teknisk kemi) ; Göran Petersson (Institutionen för teknisk kemi) ; Olof Samuelson (Institutionen för teknisk kemi)
Acta Chem. Scand. B Vol. 29 (1975), 4, p. 526-527.
[Artikel, refereegranskad vetenskaplig]

C-(2-Hydroxyethyl)tartronic acid is predominant among the dicarboxylic acids and its formation in 12 % yield makes it a major product from xylan. The structure indicates that it is formed from terminal, oxidized xylose units by beta-elimination at C-4 and subsequent benzilic acid rearrangement. It is proposed that 2-ulosonic acid end-groups or ulosono-1,5-lactone end-groups, related in structure to ascorbic acid, are formed as precursors.

Nyckelord: wood, pulp, xylose, oxidation, chromatography, mass spectrometry



Denna post skapades 2011-04-30. Senast ändrad 2011-04-30.
CPL Pubid: 140088

 

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Institutioner (Chalmers)

Institutionen för teknisk kemi (1946-1998)

Ämnesområden

Analytisk kemi

Chalmers infrastruktur