A5085624718- Catalytic C–H Functionalization Methods
- Hydrocarbon exploration and reservoir analysis
- Radical Photochemical Reactions
- Sulfur-Based Synthesis Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Polymer Nanocomposites and Properties
- Polymer crystallization and properties
- Coal Properties and Utilization
- Polymer composites and self-healing
- Graphene research and applications
- earthquake and tectonic studies
- Fullerene Chemistry and Applications
- Carbon Nanotubes in Composites
- Geological and Geophysical Studies
- Synthesis and Catalytic Reactions
- Geological Studies and Exploration
- Geological and Geochemical Analysis
- Structural Analysis of Composite Materials
- Seismic Imaging and Inversion Techniques
- Quantum Dots Synthesis And Properties
- CO2 Reduction Techniques and Catalysts
- Methane Hydrates and Related Phenomena
- Reservoir Engineering and Simulation Methods
- Quinazolinone synthesis and applications
- Polymer Nanocomposite Synthesis and Irradiation
Nanchang University
2023-2025
Hubei University
2017-2024
Sinopec (China)
2018-2024
University of Chinese Academy of Sciences
2017-2024
Wuhan University
2003-2024
Institute of Chemical Industry of Forest Products
2024
Chinese Academy of Forestry
2024
Research Institute of Petroleum Exploration and Development
2022-2024
Technical Institute of Physics and Chemistry
2016-2023
Chinese Academy of Sciences
2016-2023
We have developed a general and highly efficient copper-catalyzed method for synthesis of quinazoline quinazolinone derivatives, the target products were obtained in good to excellent yields via cascade reactions amidine hydrochlorides with substituted 2-halobenzaldehydes, 2-halophenylketones, or methyl 2-halobenzoates, is simple, economical practical advantages.
Herein, a fast, scalable, and transition-metal-free borylation of alkyl halides (X = I, Br, Cl) enabled by electroreduction is reported. This process provides an efficient practical access to primary, secondary, tertiary boronic esters at high current. More than 70 examples, including the late-stage natural products drug derivatives, are furnished room temperature, thereby demonstrating broad utility functional-group tolerance this protocol. Mechanistic studies disclosed that B2cat2 serves...
Abstract Direct allylic C−H thiolation is straightforward for C(sp 3 )−S bond formation. However, strong interactions between thiol and transition metal catalysts lead to deactivation of the catalytic cycle or oxidation sulfur atom under oxidative condition. Thus, direct )−H has proved difficult. Represented herein an exceptional direct, efficient, atom‐ step‐economic S−H visible light irradiation. Radical trapping experiments electron paramagnetic resonance (EPR) spectroscopy identified...
Selective hydrogenation of epoxides would be a direct and powerful approach for alcohol synthesis, but it has proven to elusive. Here, electrochemically epoxide using electrons protons as reductants is reported. A wide range primary, secondary, tertiary alcohols can achieved through selective Markovnikov or anti-Markovnikov ring opening in the absence transition metals. Mechanistic investigations revealed that regioselectivity controlled by thermodynamic stabilities situ generated benzyl...
As one of the most ubiquitous bulk reagents available, intrinsic chemical inertness tetrahydrofuran (THF) makes direct and site-selective C(sp3 )-H bond activation difficult, especially under redox neutral condition. Here, we demonstrate that semiconductor quantum dots (QDs) can activate α-C-H THF via forming QDs/THF conjugates. Under visible light irradiation, resultant alkoxyalkyl radical directly engages in cross-coupling with α-amino from amino C-H bonds or addition alkene...
Reported herein is direct C(sp3)–H arylation of unprotected benzyl anilines and alkylarenes via consecutive photoinduced electron transfer by visible light irradiation. Reductive quenching cycles radical–radical cross-coupling were involved, paramagnetic resonance experiments provide evidence for the formation radical intermediates formed in situ. The protocol highlights transition metal free, external oxidant broad substrate scope, high efficiency (>60 examples, up to 96%).
We have developed a convenient and efficient approach for P-arylation of organophosphorus compounds containing P−H. Using commercially available inexpensive proline pipecolinic acid as the ligands greatly improved efficiency coupling reactions, so method can provide an entry to arylphosphonates, arylphosphinates arylphosphine oxides.
Abstract Colloidal semiconductor quantum dots (QDs) have recently attracted widespread interest for diverse applications. Owing to their confinement effects, rich surface binding properties, high surface‐to‐volume ratios, broad and intense absorption spectra in the visible region, low cost as well, QDs offer new versatile ways serve photocatalysts organic synthesis. Most recently, use of is springing up Herein, we highlight recent advances used smart clean transformations.
Nanogeosciences are the international frontier field for recent cross-development of geosciences and nanotechnology, also combination nanometer earth. It is possible to research morphology, structures, components earth on a nanoscale further reveal information recorded by substances earth, relying means, experience, achievements fast-developing nanotechnology in with geoscience. Based summarization existing academic ultra-microscopic reasearch geosciences, concept nanogeosciences put...
Natural rubber (NR) with proteins and lipids has superior mechanical properties to its synthetic counterpart, polyisoprene rubber. However, it is a challenge unravel the morphology of lipids. Here we used two-color stochastic optical reconstruction microscopy (STORM) directly visualize spatial organization in NR. We found that form an interdispersed stabilizing layer on surface NR latex particles. After drying, aggregates up 300 nm diameter. The physically interact terminal groups chains,...
Asymmetric electrocatalysis offers exciting new strategies for the synthesis of chiral molecules through novel reaction pathways. However, simultaneous activation reactants on both electrodes via asymmetric paired electrolysis, which is more energy efficient and economic than single half-electrode synthesis, remains a formidable challenge. Herein, an olefin–sulfonylimine coupling presented first time. In this protocol, Co-catalyzed hydrogen atom transfer anode Ni-catalyzed sulfonylimine...
Direct N-allylation of azoles with hydrogen evolution has been achieved through the synergistic combination organic photocatalysis and cobalt catalysis. The protocol bypasses stoichiometric oxidants prefunctionalization alkenes produces (H2) as byproduct. This transformation highlights high step- atom-economy, efficiency, broad functional group tolerance for further derivatization, which opens a door C-N bond formation that is valuable in heterocyclic chemistry.
Although many studies based on naturally deformed samples have been carried out to investigate the pore-crack characteristics of shales, high temperature (T) and pressure (P) deformation experiments, which can exclude sample heterogeneity factors, simulate deep T-P conditions, generate a continuous sequence, are still rare. In this study, shales with different levels generated by triaxial compression methods including scanning electron microscopy, mercury injection, gas sorption utilized...
A new synthetic strategy was developed to prepare polyphosphazenes with second-order nonlinear optical chromophore in which sulfonyl groups are the acceptors. Thus, P1 and P2 that contain aniline or indole as side chains were obtained from a highly reactive macromolecular intermediate, poly(dichlorophosphazene), by nucleophilic substitution reaction. Then post-azo coupling of p-ethylsulfonylbenzenediazonium fluoroborate p-octylsulfonylbenzenediazonium toward ring afforded sulfonyl-based...
X-ray transient absorption spectroscopy (XTA) and optical (OTA) were used to probe the Co(I) intermediate generated in situ from an aqueous photocatalytic hydrogen evolution system, with [RuII(bpy)3]Cl2·6H2O as photosensitizer, ascorbic acid/ascorbate electron donor, Co-polypyridyl complex ([CoII(DPA-Bpy)Cl]Cl) precatalyst. Upon exposure light, XTA measured at Co K-edge visualizes grow decay of intermediate, reveals its Co–N bond contraction 0.09 ± 0.03 Å. Density functional theory (DFT)...
The functionalization of aliphatic C–H bonds is both a major challenge and desirable goal in organic synthesis. Here, we describe the successful arylation unactivated alkanes with heteroarenes by using iridium polypyridyl complexes as photocatalyst persulfate HAT catalyst precursor under visible-light irradiation. This reaction features good functional group tolerance broad scope regard to alkane heteroarene substrates (37 examples), which allows direct access alkyl-substituted...