Cleavage of organosolv lignin to phenols using nitrogen monoxide and hydrazine
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.
Citation
Hofmann , L E , Altmann , L-M , Fischer , O , Prusko , L , Xiao , G , Westwood , N J & Heinrich , M R 2021 , ' Cleavage of organosolv lignin to phenols using nitrogen monoxide and hydrazine ' , ACS Omega , vol. Articles ASAP . https://doi.org/10.1021/acsomega.1c00996
Publication
ACS Omega
Status
Peer reviewed
ISSN
2470-1343Type
Journal article
Description
Funding: The authors are grateful to the support by the Deutsche Bundesstiftung Umwelt (DBU).Collections
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