2-CHLORO-4,4,5,5-TETRAMETHYL-1,3,2-DIOXAPHOSPHOLANE, A REAGENT FOR THE ACCURATE DETERMINATION OF THE UNCONDENSED AND CONDENSED PHENOLIC MOIETIES IN LIGNINS

被引：754

作者：

GRANATA, A

ARGYROPOULOS, DS

机构：

[1] MCGILL UNIV,DEPT CHEM,MONTREAL,PQ H3A 2A7,CANADA

[2] PULP & PAPER RES CTR,MONTREAL,PQ H3A 2A7,CANADA

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1995年 / 43卷 / 06期

关键词：

ANALYSIS; AROMATIC GROUPS; HYDROXYLS; LIGNINS; NUCLEAR MAGNETIC RESONANCE (NMR); PHENOLS; PHOSPHORUS; QUANTITATIVE;

D O I：

10.1021/jf00054a023

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The use of 2-chloro-4,4,5,5-tetramethyl-1,3,2-dioxaphospholane as a phosphitylation reagent in quantitative P-31 NMR analysis of the hydroxyl groups in lignins has been thoroughly examined, and an experimental protocol recommended for spectra acquisition has been developed. Quantitative analysis of six ''standard lignins'' gave results comparable to those obtained by other methods of analysis. Excellent resolution of the various phenolic hydroxyl environments including those present in condensed moieties was observed. However, this was at the expense of resolution in the aliphatic hydroxyl region, where no distinction between primary, secondary, and the erythro and three forms of the secondary hydroxyls of the beta-O-4 bonds can be made.

引用

页码：1538 / 1544

页数：7

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