Visible-Light-Induced Selective C-C Bond Cleavage Reactions of Dimeric ß-O-4 and ß-1 Lignin Model Substrates Utilizing Amine-Functionalized Fullerene.
J Org Chem
; 87(5): 2289-2300, 2022 03 04.
Article
em En
| MEDLINE
| ID: mdl-35045708
ABSTRACT
Finding a selective and efficient fragmentation process under ambient conditions is pivotal for the generation of fuels and chemical feedstocks from lignoceullosic biomass. In the present study, visible-light and amine-functionalized fullerene-based photocatalyst-promoted photodegradation reactions of dimeric ß-O-4 and ß-1 lignin model compounds, containing varying numbers of methoxy substituents on the arene ring, were explored to find and develop mild, eco-friendly photochemical techniques for efficient delignification. The results showed that, in contrast to well-known organic photoredox catalysts, amine-functionalized fullerene photocatalyst promoted photochemical reactions of lignin model compounds could lead to more efficient lignin fragmentation reactions through a pathway involving a selective Cα-Cß bond cleavage process, and in addition, Cα-hydroxyl moiety in lignin model compounds played a significant role in the success of the Cα-Cß bond cleavage reaction of lignin model substrates.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fulerenos
/
Lignina
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
J Org Chem
Ano de publicação:
2022
Tipo de documento:
Article