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Title: Selective Oxidation of Lignin Model Compounds

Journal Article · · ChemSusChem

Abstract Lignin, the planet's most abundant renewable source of aromatic compounds, is difficult to degrade efficiently to welldefined aromatics. We developed a microwave‐assisted catalytic Swern oxidation system using an easily prepared catalyst, MoO 2 Cl 2 (DMSO) 2 , and DMSO as the solvent and oxidant. It demonstrated high efficiency in transforming lignin model compounds containing the units and functional groups found in native lignins. The aromatic ring substituents strongly influenced the selectivity of β‐ether phenolic dimer cleavage to generate sinapaldehyde and coniferaldehyde, monomers not usually produced by oxidative methods. Time‐course studies on two key intermediates provided insight into the reaction pathway. Owing to the broad scope of this oxidation system and the insight gleaned with regard to its mechanism, this strategy could be adapted and applied in a general sense to the production of useful aromatic chemicals from phenolics and lignin.

Research Organization:
Univ. of Wisconsin, Madison, WI (United States). Great Lakes Bioenergy Research Center
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0018409; FC02-07ER64494
OSTI ID:
1459426
Alternate ID(s):
OSTI ID: 1493465
Journal Information:
ChemSusChem, Vol. 11, Issue 13; ISSN 1864-5631
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Cited By (4)

Atomic Force Microscopy and Molecular Dynamics Simulations for Study of Lignin Solution Self‐Assembly Mechanisms in Organic–Aqueous Solvent Mixtures journal February 2020
Heterogeneous Catalyzed Thermochemical Conversion of Lignin Model Compounds: An Overview journal November 2019
Activating molecular oxygen with Au/CeO 2 for the conversion of lignin model compounds and organosolv lignin journal January 2019
Selective catalytic degradation of a lignin model compound into phenol over transition metal sulfates journal January 2020


Figures / Tables (3)