Towards bioresource-based aggregation-induced emission luminogens from lignin β-O-4 motifs as renewable resources.

ABSTRACT: One-pot synthesis of heterocyclic aromatics with good optical properties from phenolic β-O-4 lignin segments is of high importance to meet high value added biorefinery demands. However, executing this process remains a huge challenge due to the incompatible reaction conditions of the depolymerization of lignin β-O-4 segments containing γ-OH functionalities and bioresource-based aggregation-induced emission luminogens (BioAIEgens) formation with the desired properties. In this work, benzannulation reactions starting from lignin β-O-4 moieties with 3-alkenylated indoles catalyzed by vanadium-based complexes have been successfully developed, affording a wide range of functionalized carbazoles with up to 92% yield. Experiments and density functional theory calculations suggest that the reactio

SUBMITTER: Guo T 

PROVIDER: S-EPMC10539282 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature