AI Article Synopsis
- A new method for breaking down organosolv lignin is presented, resulting in a variety of aromatic compounds, specifically phenols.
- The process involves a two-step reaction: the first step uses DDQ and nitrogen monoxide to oxidize lignin, integrating two waste materials.
- In the second step, hydrazine and potassium hydroxide facilitate the cleavage of oxidized lignin into phenolic compounds that lack substituents at the 4-position.
Article Abstract
From the variety of methods known for the depolymerization of organosolv lignin, a broad range of diversely substituted aromatic compounds are available today. In the present work, a novel two-step reaction sequence is reported, which is focused on the formation of phenols. While the first step of the depolymerization strategy comprises the 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-catalyzed oxidation of organosolv lignin with nitrogen monoxide so that two waste materials are combined, cleavage to the phenolic target compounds is achieved in the second step employing hydrazine and potassium hydroxide under Wolff-Kishner-type conditions. Besides the fact that the novel strategy proceeds via an untypical form of oxidized organosolv lignin, the two-step sequence is further able to provide phenols as cleavage products, which bear no substituent at the 4-position.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8340100 | PMC |
| http://dx.doi.org/10.1021/acsomega.1c00996 | DOI Listing |
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