Photocatalytic Conversion of Lignin Models into Functionalized Aromatic Molecules Initiated by the Proton-Coupled Electron Transfer Process
Yi Li, Jingya Wen, Simeng Wu, Sha Luo, Chunhui Ma, Shujun Li, Zhijun Chen, Shouxin Liu, Bing Tian
Abstract
A mild and efficient method for lignin β-O-4 cleavage and functionalization was achieved via photocatalysis. This protocol exhibits a broad scope of lignin models and excellent compatibility of functionalization reagents, constructing a series of functionalized lignin-based aromatic compounds. Highly selective formation of alkyl radical species through a proton-coupled electron transfer and β-scission process provides the opportunity to form new C-C and C-N bonds by reaction with electrophilic reagents.
Topics & Concepts
ChemistrySurface modificationLigninElectrophilePhotocatalysisReagentElectron transferMoleculeBond cleavagePhotochemistryAlkylCombinatorial chemistryOrganic chemistryCatalysisPhysical chemistryLignin and Wood ChemistryBiochemical and biochemical processesPlant Gene Expression Analysis