A5100356943- Nanomaterials for catalytic reactions
- Chemical Synthesis and Analysis
- Click Chemistry and Applications
- Cyclopropane Reaction Mechanisms
- Crystal structures of chemical compounds
- Catalytic C–H Functionalization Methods
- Metal-Organic Frameworks: Synthesis and Applications
- Catalytic Processes in Materials Science
- Crystallography and molecular interactions
- Synthesis and biological activity
- Axial and Atropisomeric Chirality Synthesis
- Asymmetric Hydrogenation and Catalysis
- Synthesis and Catalytic Reactions
- Catalytic Cross-Coupling Reactions
- Asymmetric Synthesis and Catalysis
- Molecular spectroscopy and chirality
- Catalysis and Hydrodesulfurization Studies
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Synthesis and Characterization of Heterocyclic Compounds
- Synthesis and Biological Evaluation
- Advanced Photocatalysis Techniques
- Covalent Organic Framework Applications
- Ammonia Synthesis and Nitrogen Reduction
- Quinazolinone synthesis and applications
- Electrocatalysts for Energy Conversion
Qingdao University
2022-2024
Nanning Normal University
2022-2024
Guiyang Medical University
2023
Jiangxi University of Science and Technology
2019-2023
Shandong Agricultural University
2023
Wuhan Textile University
2023
Chinese Academy of Medical Sciences & Peking Union Medical College
2023
Peking Union Medical College Hospital
2023
Tianjin University of Technology
2015-2022
Tiangong University
2022
Abstract Inherent chirality is used to describe chiral cyclic molecules devoid of central, axial, planar, or helical and has tremendous applications in recognition enantioselective synthesis. Catalytic divergent syntheses inherently have attracted increasing interest from chemists. Herein, we report the synthesis tribenzocycloheptene derivatives via phosphoric acid (CPA)‐catalyzed condensation ketones hydroxylamines. This chemistry paves way accessing less stable 7‐membered rings with...
NHC-enolate plus 3: N-heterocyclic carbenes (NHCs) serve as organocatalysts for the [2+3] annulation of nitrovinylindoles with α-chloroaldehydes via an intermediate azolium enolate. The method provides trans-disubstituted pyrroloindolones good yields and excellent diastereo- enantioselectivities. Further transformations lead to tetracyclic pyrrolo[1,2-a]indoles potential psychotropic other bioactivities. As a service our authors readers, this journal supporting information supplied by...
We report herein that copper(I) catalysis using a bis(phosphine) dioxide ligand can catalyze the desymmetric C-H arylation of prochiral bipyrroles. More than 50 nitrogen-nitrogen atropisomers were achieved in good to excellent yields with enantioselectivities (≤97% yield, ≤98% ee). The reaction proceeds under mild conditions functional group compatibility on arenes and diaryliodonium salts. Moreover, this principle enables iterative bipyrroles enantioselectively arylate different positions...
Inherently chiral calix[4]arenes are an excellent structural scaffold for enantioselective synthesis, recognition, sensing, and circularly polarized luminescence. However, their catalytic synthesis remains challenging. Herein, we report efficient of inherently calix[4]arene derivatives via cascade cyclization oxidation reactions. The three-component reaction features a broad substrate scope (33 examples), high efficiency (up to 90 % yield), enantioselectivity (>95 ee on average). potential...
Regioselective rapid triazole syntheses at low temperature are described. Organic azides and propargyl cations generated by acids gave fully substituted 1H-1,2,3-triazoles. Most reactions could be performed in 5 min not only rt but also −90 °C. Both terminal internal alkynes were acceptable, the sterically bulky substituents afford products smoothly. Various types of three-component coupling demonstrated, presence allenylaminodiazonium intermediates was indicated.
Developing facile and direct synthesis routes for enantioselective construction of cyclic π-conjugated molecules is crucial. However, originate chirality from the distorted structure around heptagon-containing polyarenes largely overlooked, all-carbon remains a challenge. Herein, we present highly route fabricating all carbon via palladium-catalyzed carbene-based cross-coupling benzyl bromides N-arylsulfonylhydrazones. A wide range nonplanar, saddle-shaped tribenzocycloheptene derivatives...
Two novel isostructural 3d–4f microporous heterometal–organic frameworks (HMOFs) with high acid/base stability were constructed based on a polydentate carboxylate ligand. Luminescent studies showed that one of the new HMOFs displayed high-sensitivity luminescent sensing functions for BTEX (benzene, toluene, ethylbenzene, xylenes), particularly ethylbenzene. This is first observation HMOF as chemical sensor BTEX.
The copper-catalyzed reaction of arylcyclopropanes, N-fluorobis(arenesulfonyl)imides, and (bpy)Zn(CF3)2 (bpy = 2,2′-bipyridine) at room temperature affords the corresponding ring-opening 1,3-aminotrifluoromethylation products in satisfactory yields. protocol is highly regioselective, providing a convenient entry to γ-trifluoromethylated amines. A mechanism involving trifluoromethylation benzyl radicals proposed.
Au<sub>1−x</sub>Pd<sub>x</sub> bimetallic catalysts with low Pd entities on CeO<sub>2</sub> nanorods delivered high activity and chemoselectivity for hydrogenation of halogenated quinolines. Improved could be attributed to the selective adsorption configurations quinolines Au <italic>via</italic> tilted orientation rather than flat orientation.
NHC-Enolate plus 3: NHC-Organokatalyse (NHC=N-heterocyclisches Carben) ermöglicht eine [2+3]-Anellierung von Nitrovinylindolen mit α-Chloraldehyden über ein intermediäres Azolium-Enolat. Die Methode eröffnet einen effizienten Zugang zu trans-disubstituierten Pyrroloindolonen in guten Ausbeuten und exzellenten Diastereo- Enantioselektivitäten. Weitere Transformationen führen tetracyclischen Pyrrolo[1,2-a]indolen möglichen psychotropen anderen Bioaktivitäten. As a service to our authors and...
Abstract Resveratrol, a stilbene phytoalexin in plants, is believed to benefit human health. In this study, an optimized enzyme‐assisted method was developed extract the total content of trans ‐resveratrol (free or combined with glucose) peanut seeds, followed by detection using high‐performance liquid chromatography. The extraction process Box–Behnken design and response surface methodology. enzyme concentration, digestion time, pH, temperature were 3.02 g/L, 57.06 min, 5.88, 51.05°C,...
A palladium-catalyzed ring-opening [3 + 2]-annulation of spirovinylcyclopropanyl oxindoles with seven-membered cyclic N-sulfonylimines has been developed. wide range benzosultams featuring both a quaternary center and axially chiral biaryl scaffolds have afforded in an average yield 87% moderate to excellent diastereoselectivities. The enantioenriched were also accessed successfully good yields atropoenantioselectivities enabled by the Pd2(dba)3/(S,S,S)-SKP ligand. practical utility this...
0.54% Rh/Co(OH) 2 exhibited 100% selectivity for –NO hydrogenation at >96% conversion nitroarene hydrogenation. Its excellent catalytic performance is due to the interfacial effect of Rh–Co(OH) and Rh in form single atoms nanoclusters.
The diastereoselective assembly of spiroindolenines via a synergistic scandium/gold-catalyzed dearomative spiroannulation is herein described. This protocol offers access to wide variety spiroindolenine derivatives in 86% average yield with moderate excellent diastereoselectivities (up 97:3 dr). control experimental studies lend support the bimetallic relay catalysis. Moreover, scale-up reaction and synthetic transformations product further demonstrate its utility.