A5054531864- Lignin and Wood Chemistry
- Enzyme-mediated dye degradation
- Biochemical and biochemical processes
- Oxidative Organic Chemistry Reactions
- Catalytic Processes in Materials Science
- Catalysis for Biomass Conversion
- Phytochemistry and Biological Activities
- Asymmetric Hydrogenation and Catalysis
- Natural product bioactivities and synthesis
- Advanced Photocatalysis Techniques
- Catalytic C–H Functionalization Methods
- Nanomaterials for catalytic reactions
- Plant Toxicity and Pharmacological Properties
- Catalysis and Hydrodesulfurization Studies
- Electrocatalysts for Energy Conversion
- Phytochemistry and biological activity of medicinal plants
- Mesoporous Materials and Catalysis
- Biological and pharmacological studies of plants
- Graphene and Nanomaterials Applications
- Nanoplatforms for cancer theranostics
- Chemical Synthesis and Reactions
- Radical Photochemical Reactions
- Phytochemistry and Bioactive Compounds
- Catalysis and Oxidation Reactions
- Pharmacological Effects of Natural Compounds
Nanjing Forestry University
2022-2025
Taiyuan University of Technology
2020-2025
University of Turin
2025
Nanjing University of Chinese Medicine
2025
Suzhou Traditional Chinese Medicine Hospital
2024-2025
China Pharmaceutical University
2009-2024
Panyu District Central Hospital
2024
Guangzhou Medical University
2024
University of Wisconsin–Madison
2023
Chinese Academy of Sciences
2013-2023
ConspectusIn recent decades, research on lignin depolymerization and its downstream product transformation has drawn an enormous amount of attention from academia to industry worldwide, aiming at harvesting aromatic compounds this abundant renewable biomass resource. Although the conversion can be traced back 1930s various noncatalytic catalytic methods have been explored depolymerize via direct or models studies, complexity structure, linkages, high stability bonds, diverse fragments...
For lignin valorization, simultaneously achieving the efficient cleavage of ether bonds and restraining condensation formed fragments represents a challenge thus far. Herein, we report two-step oxidation–hydrogenation strategy to achieve this goal. In oxidation step, O2/NaNO2/DDQ/NHPI system selectively oxidizes CαH–OH Cα═O within β-O-4 structure. subsequent hydrogenation α-O-4 preoxidized structures are further hydrogenated over NiMo sulfide catalyst, leading Cβ–OPh Cα–OPh bonds. Besides...
This work demonstrates the synthesis of an efficient photocatalyst, Au25(PPh3)10Cl2(SC3H6SiO3)5/TiO2, for selective oxidation amines to imines. The photocatalyst is prepared via hydrolysis Au25(PPh3)10Cl2[(SC3H6Si(OC2H5)3]5 nanoclusters in presence TiO2 support. gold exhibit good photocatalytic activity using visible light and under mild thermal conditions with molecular oxygen (O2). turnover frequency (TOF) 4-methylbenzylamine found be 1522 h–1, which considerably higher than that...
Heterogeneously catalyzed synthesis of quinazolinones or quinazolines is reported in this study. An α-MnO2 catalyst found to be highly active and selective the oxidative cyclization anthranilamides aminobenzylamines with alcohols using TBHP as an oxidant. This protocol exhibits a broad substrate scope, operationally simple without additive.
Generation of controllable carbon radical under the assistance N-oxyl is an efficient method for activation C-H bonds in hydrocarbons. We herein report that irradiation α-Fe2O3 and N-hydroxyphthalimide (NHPI) 455 nm light generates phthalimide-N-oxyl (PINO*), which after being formed by oxidation with holes, confined on surface. The half-life time reaches 22 s as measured situ electron paramagnetic resonance (EPR) turned off. This allows long-lived to abstract H from bond form a reacts...
Herein, we present an efficient dehydroxylation–hydrogenation strategy for the lignin β-O-4 model compounds’ transformation over a NiMo sulfide catalyst.
Copper-catalyzed radical-relay reactions provide a versatile strategy for selective C-H functionalization; however, with peroxide-based oxidants often require excess substrate. Here, we report photochemical to overcome this limitation by using Cu/2,2'-biquinoline catalyst that supports benzylic esterification limiting Mechanistic studies indicate blue-light irradiation promotes carboxylate-to-copper charge transfer, reducing resting-state CuII CuI, which activates the peroxide generate an...
We present an experimental and computational study of the elementary steps N<sub>2</sub>H<sub>4</sub> hydrogen transfer on crystalline MoO<sub>2</sub>, demonstrate its unique bifunctional metallic-basic properties in a catalytic hydrogenation reaction.
SWNTs composite has a great potential as sensitizer for PDT.
Conversion of low-carbon olefins to higher alcohols or via the formation C–C bonds is an increasingly important topic. We herein report example converting isobutene and formaldehyde (38 wt % aqueous solution) 3-methyl-1,3-butanediol (MBD), a precursor for isoprene. The reaction occurs through Prins condensation–hydrolysis over praseodymium (Pr)-doped CeO2 catalyst. best MBD yield (70%) achieved Pr-doped Catalyst characterizations with high-angle annular dark field transmission electron...
Lignin, as an abundant aromatic biopolymer in plants, has great potential for medical applications due to its active sites, antioxidant activity, low biotoxicity, and good biocompatibility. In this work, a simple ecofriendly approach lignin fractionation modification was developed improve the antitumor activity of lignin. The fraction KL-3 obtained by gradient acid precipitation at pH = 9–13 showed cytotoxicity. Furthermore, cell-feeding after additional structural modifications such...
We here report a new protocol for the formylation of various amines, primary or secondary, aromatic alkyl, cyclic linear, mono- di-amine, with dimethylformamide (DMF) as reagent to obtain corresponding formamides in good excellent yields over CeO2 catalyst. The reaction requires no homogeneous acidic basic additives and is tolerant water.
A methodology for the direct synthesis of imines from amines <italic>via</italic> a facile α-MnO<sub>2</sub> catalyzed-procedure at room temperature with TBHP as an oxidant was described. The catalysis is suitability 13 aromatic and aliphatic amines, it heterogeneous, recyclable reusable.
Context: The flower bud of Tussilago farfara L. (Compositae) (FTF) is one the traditional Chinese medicinal herbs used to treat cough, phlegm, bronchitic, and asthmatic conditions.Objective: objective this study isolate four caffeoylquinic acids from ethyl acetate extract (EtE) FTF evaluate their antitussive, expectorant, anti-inflammatory activities.Materials methods: structures compounds 1–4 isolated EtE were determined by spectral analysis. Mice orally treated with these mixture (in a...
Pulmonary fibrosis is common in a variety of inflammatory lung diseases, there currently no effective clinical drug treatment. It has been reported that the ethanol extract Eclipta prostrata L. can improve collagen deposition and pathology induced by bleomycin (BLM) mice. In present study, we studied whether wedelolactone (WEL), major coumarin ingredient E. prostrata, provided protection against BLM-induced pulmonary fibrosis. ICR or C57/BL6 strain mice were treated with BLM to establish...