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Title

Coupling and Reactions of Lignols and New Lignin Monomers: A Density Functional Theory Study

AuthorsElder T.; Río Andrade, José Carlos del ; Rencoret, Jorge ; Kim, Hoon; Beckham, Gregg T.; Crowley, Michael F.
KeywordsTricin
Piceatannol
Caffeyl alcohol
5-Hydroxyconiferyl alcohol
Lignin
Issue Date9-Jul-2020
PublisherAmerican Chemical Society
CitationACS Sustainable Chemistry and Engineering 8(30): 11033–11045 (2020)
AbstractThis perspective summarizes and compares computational results for the thermodynamics of bond dissociation, coupling, and rearomatization for a number of noncanonical lignin monomer–lignol combinations that have been found to occur experimentally. The noncanonical lignin monomers discussed are tricin, caffeyl alcohol, 5-hydroxyconiferyl alcohol, and piceatannol. Among dimeric combinations, the results for bond dissociation are generally similar, but in cases for which trimers have been reported (tricin-lignol adducts), this value can be quite variable, with stereochemical and structural preferences. Among the adducts examined thus far, the energies associated with quinone methide formation and rearomatization are not dissimilar and would not impede subsequent polymerization. These fundamental studies may help to elucidate how lignin monomers are incorporated into the lignin polymer, provide leads for targeted genetic modification, and be of use in deconstruction for the production of commodity chemicals.
Description13 páginas.- 8 figuras.- 3 tablas.- 63 referencias
Publisher version (URL)http://dx.doi.org/10.1021/acssuschemeng.0c02880
URIhttp://hdl.handle.net/10261/218811
DOIhttp://dx.doi.org/10.1021/acssuschemeng.0c02880
E-ISSN2168-0485
Appears in Collections:(IRNAS) Artículos
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