Investigating the Stereochemistry of α-Carbon in Lignin Preparations and Lignin Model Compounds Using 77Se NMR

Studying the stereochemistry of lignin as a natural chiral polymer may have scientific and technical importance regarding the behavior of lignin and delignification processes. In the present study, the hydroxyl groups of α-carbon (chiral center) in phenyl propane structural units of lignins and two...

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Bibliographic Details
Published in:	Bioresources Vol. 10; no. 2; pp. 2506 - 2510
Main Authors:	Oghbaie, Mahnaz, Mirshokraie, Seyed Ahmad, Massoudi, Abdol H.
Format:	Journal Article
Language:	English
Published:	North Carolina State University 04-03-2015
Subjects:	77Se NMR spectroscopy Dioxane lignin (DL) Model compound Stereochemistry α-carbon
Online Access:	Get full text
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Summary:	Studying the stereochemistry of lignin as a natural chiral polymer may have scientific and technical importance regarding the behavior of lignin and delignification processes. In the present study, the hydroxyl groups of α-carbon (chiral center) in phenyl propane structural units of lignins and two model compounds were selenated. Then, the 77Se nuclear magnetic resonance (NMR) spectra of the selenated samples were examined in order to determine the ratio of diastereomers (erythro and threo). The results revealed that lignins are a mixture of different ratios of two diastereomers. This finding may have scientific importance and practical impacts on the chemistry of delignification processes and other related phenomena in the domain of pulp and paper sciences.
ISSN:	1930-2126 1930-2126
DOI:	10.15376/biores.10.2.2506-2510