1H NMR SPECTRA OF LIGNIN MODEL COMPOUNDS
Paper in proceedings, 2009
1H NMR spectral data for lignin model compounds are of interest in connection with the interpretation of NMR
spectra of lignins recorded by 1D (1H NMR) and certain 2D spectroscopic techniques. A database comprising such spectral data is being created. Derivatization influences the peak positions in the 1H NMR spectra of lignin models
to a large extent. Similarly, an exchange of solvent often
results in dramatic shifts of peak positions. Solvent and
derivatization effects can be employed for the
interpretation of lignin spectra in structural terms.
Stereochemistry strongly influences the position of signals
in 1H NMR spectra. This offers a possibility to elucidate
the stereochemistry of the structural elements in lignins
based on 1H NMR spectral data of model compounds.