Figure 8.

Aromatic regions in 2D HSQC spectra of hydrogenated oil of beechwood sawdust (red), a mixture of commercial guaiacyl, syringyl, and coumaryl monomers (blue), and hydrogenated oil of boron lignin (tan). 2-Methoxy-4-propylphenol (G^I) and 2,6-dimethoxy-4-propylphenol (S^I) are observed in both the commercial monomer mixture (blue spectrum) and the beechwood sawdust oil sample (red spectrum), while their demethylated derivatives (G^II, S^II) are present in the boron lignin oil sample (tan spectrum).