Determination of chemical shifts in 6-condensed syringylic lignin model compounds

Lucas Lagerquist, Jani Rahkila, Patrik Eklund*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A small library of 6-substituted syringyl model compounds with aliphatic, carboxylic, phenylic, benzylic alcohols and brominated substituents were prepared. The influence of the substituents on the chemical shifts of the compounds was analyzed. All of model compounds showed a characteristic increase in the 13C NMR chemical shift of the methoxy group vicinal to the substitution. This 13C NMR peak and its corresponding correlation peak in HSQC could potentially be used to identify 6-condensation in syringylic lignin samples.

Original languageEnglish
JournalHolzforschung
DOIs
Publication statusPublished - 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • condensation
  • HSQC
  • lignin model compounds
  • NMR-spectroscopy
  • syringyl

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