Abstract
Several syringyl lignin models have been oxidized to 2,6-dimethoxy-p-benzoquinone (DMBQ) in high yeilds with nitrogen dioxide (NO2) in methanol solvent. The yields of DMBQ were high for syringyl alcohol, syringaldehyde, and disyringyl methane and moderate for several other phenolic syringyl models. Benzoquinones were not formed from non phenolic substrates. The yields were slightly improved bythe presence of N-hydroxysuccinimide. Guaiacyl lignin model compounds gave low benzoquinone yields; the major products were C-5 nitro substituted compounds. A radical mechanism is proposed to explain the observed results.
Original language | American English |
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Pages (from-to) | 169-189 |
Number of pages | 21 |
Journal | Journal of Wood Chemistry and Technology |
Volume | 16 |
Issue number | 2 |
DOIs | |
State | Published - 1996 |
NREL Publication Number
- NREL/JA-21742