C-13 NMR-STUDIES ON LIGNINS DEPOLYMERIZED WITH DRY HYDROGEN IODIDE

被引：0
|
作者：
AKIM, LG
SHEVCHENKO, SM
ZARUBIN, MY
机构：
来源：
WOOD SCIENCE AND TECHNOLOGY | 1993年 / 27卷 / 04期
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中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
Spruce (Picea mariana) and birch (Betula verrucosa) milled wood lignins were depolymerized with dry hydrogen iodide. C-13 NMR spectra of the initial and treated lignins were recorded. The data on chemical shifts of a set of model compounds treated with dry HI were used in the assignment of changes in the spectra of the lignins. The results obtained show that a cleavage of ether bonds in lignin and a substitution of alpha-hydroxy- and alpha-alkoxygroups by iodine take place during the treatment.
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页码：241 / 248
页数：8
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