E.S.R. study of alkaline, oxidative degradation of saccharides. Identification of 2,5-dihydroxy-p-benzosemiquinone

✍ Scribed by Ivan Šimkovic; Josef Tiňo; Jan Plaček; Zdeněk Maňásek

• Book ID: 102640244
• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 424 KB
• Volume: 116
• Category: Article
• ISSN: 0008-6215
• DOI: 10.1016/0008-6215(83)88115-4

✦ Synopsis

The formation of radical intermediates during alkaline, oxidative degradation of saccharides and cw-hydroxycarbonyl compounds has been studied by e.s.r. spectroscopy.

Quantum chemical calculation and experiments in alkaline DzO solution showed that the dominant component of the overall spectrum corresponds to 2,5-dihydro-p-benzosemiquinone.

Formation of this radical was also observed in the alkaline-degradation products of cellulose, starch. and (4-0 methylglucurono)xylan in the presence of air.