Nguyen, Suong T. published the artcileLight-Driven Depolymerization of Native Lignin Enabled by Proton-Coupled Electron Transfer, Related Products of catalysis-chemistry, the publication is ACS Catalysis (2020), 10(1), 800-805, database is CAplus.
Here, we report a catalytic, light-driven method for the redox-neutral depolymerization of native lignin biomass at ambient temperature This transformation proceeds via a proton-coupled electron-transfer (PCET) activation of an alc. O-H bond to generate a key alkoxy radical intermediate, which then facilitates the ¦Â-scission of a vicinal C-C bond. Notably, this single-step depolymerization is driven solely by visible-light irradiation, requires no stoichiometric chem. reagents, and produces no stoichiometric waste. This method exhibits good efficiency and excellent selectivity for the activation and fragmentation of the ¦Â-O-4 linkage in the polymer backbone, even in the presence of numerous other PCET-active functional groups. The feasibility of this protocol in enabling the cleavage of the ¦Â-1 linkage in model lignin dimers was also demonstrated. These results provide further evidence that visible-light photocatalysis can serve as a viable method for the direct conversion of lignin biomass into valuable arene feedstocks.
ACS Catalysis published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Related Products of catalysis-chemistry.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia