A5029993919- Synthesis and Catalytic Reactions
- Asymmetric Synthesis and Catalysis
- Synthesis and Biological Evaluation
- Antimicrobial agents and applications
- Chemical Synthesis and Analysis
- Catalytic C–H Functionalization Methods
- Organic Chemistry Cycloaddition Reactions
- Cyclopropane Reaction Mechanisms
- Oxidative Organic Chemistry Reactions
- Synthesis and Reactions of Organic Compounds
- Sulfur-Based Synthesis Techniques
- Analytical chemistry methods development
- Bioactive Compounds and Antitumor Agents
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Chromatography in Natural Products
- Click Chemistry and Applications
- Analytical Chemistry and Chromatography
- Biopolymer Synthesis and Applications
- Synthetic Organic Chemistry Methods
- Advanced Synthetic Organic Chemistry
- Marine Biology and Environmental Chemistry
- Oil and Gas Production Techniques
- Forest Management and Policy
- Photodynamic Therapy Research Studies
- Alkaloids: synthesis and pharmacology
Fujian Normal University
2013-2022
Wuyi University
2022
Anhui University
2021
Beijing University of Technology
2015-2017
Nanjing University of Science and Technology
2013-2016
Central South University
2014-2015
Hunan Academy of Traditional Chinese Medicine
2015
Xinjiang Normal University
2006
Transportation is an important part of social and economic development also a typical high-energy high-emissions industry. Achieving low-carbon in the transportation industry much-needed requirement only way to achieve high-quality development. Therefore, based on relevant data 30 provinces China from 2010 2018, this research uses static panel model, threshold model spatial Durbin conduct empirical study impact mechanism digital innovation carbon emissions industry, draws following...
Abstract In the presence of a Cinchona alkaloid‐based squaramide organocatalyst, [3+2] cycloaddition isatin‐derived azomethine ylides with maleimides proceeded readily, thus delivering desired pyrrolidine‐fused spirooxindoles in 61–89% yields >20:1 dr and 12 to >99 % ee . The absolute configuration 5‐chloro‐1,5′‐dimethyl‐3′‐phenyl‐3′,3a′‐dihydro‐2′ H ‐spiro[indoline‐3,1′‐pyrrolo[3,4‐ c ]pyrrole]‐2,4′,6′(5′ ,6a′ )‐trione was unambiguously determined by means X‐ray single crystal...
Abstract Catalyzed by a Cinchona ‐based thiourea, the [3+2] cycloadditions of barbiturate‐based olefins with 3‐isothiocyanatooxindoles proceeded readily, and furnished dispirobarbiturates in excellent chemical yields diastereo‐ enantioselectivities. The absolute configuration was firmly confirmed an X‐ray single crystal structure analysis. A reaction mechanism proposed to account for enantioselective formation dispirobarbiturates. magnified image
Construction of novel 1,2,4-oxadiazinan-5-ones <italic>via</italic> [3 + 3] cycloaddition <italic>in situ</italic> generated azaoxyallyl cations with nitrones.
In the presence of CuI, 1,3-dipolar cycloadditions N,N′-cyclic azomethine imines with iminooxindoles proceeded readily and furnished novel oxindole spiro-N,N-bicyclic heterocycles in moderate to excellent chemical yields diastereoselectivities.
Abstract In the presence of sodium carbonate, [4+3] cycloadditions α‐halogeno hydrazones with nitrones were performed efficiently, and affording 2,3,4,7‐tetrahydro‐1,2,4,5‐oxatriazepines in moderate to high yields. magnified image
Abstract In the presence of cinchona‐thiourea organocatalyst C1 , developed organocatalytic three‐component cascade reaction isatins, malononitrile, and 2‐hydroxynaphthalene‐1,4‐diones readily proceeded to furnish chiral pyranonaphthoquinone‐fused spirooxindoles in excellent chemical yields high enantioselectivities (up 99 % yield 97 ee ). The absolute configurations were assigned on basis an X‐ray single crystal structure. Moreover, a mechanism is proposed that accounts for stereocontrolled...
Under catalysis of 10 mol % Et3N, the [3 + 2] cycloaddition barbiturate-based olefins with 3-isothiocyanato oxindoles underwent smoothly and afforded desired dispirobarbiturates in up to 99% yield 99:1 dr. The relative configuration was unambiguously determined by X-ray single-crystal structure analysis. reaction mechanism proposed shed light on diastereoselective formation dispirobarbiturates.
In the presence of Na 2 CO 3 , [3+2] cycloaddition azaoxyallyl cations, in situ formed from α‐halohydroxamates by reaction with isothiocyanides, proceeded smoothly and furnished ( Z )‐2‐iminothiazolidin‐4‐ones 25–99 % chemical yields. The structure title compounds was confirmed X‐ray single‐crystal analysis.
Abstract Photodynamic therapy (PDT) with organic photosensitizers generally goes through the oxygen‐dependent process, generating singlet oxygen and/or superoxide anion. However, generation of reactive species is often suppressed as a result hypoxia, one common features in tumors, therefore limiting effectiveness tumor treatments. Consequently, it urgent and significant to develop an oxygen‐independent hydroxyl radical photogenerator unveil mechanism. In this work, (·OH) originating from...
ABSTRACT Bi‐functional antibacterial material was prepared by co‐grafting N ‐halamine and quaternary ammonium salt monomers from cellulose fiber. The grafted fiber characterized Fourier transform infrared spectra, X‐ray photoelectron spectra. derived the precursor 4‐[(acryloxy)methyl]‐4‐ethyl‐2‐oxazolidinone via chlorination treatment oxidative chlorine (Cl + ) leaching behavior were investigated. activities of singly (only QAs‐functionalized or only Cl ‐releasing) dual (QAs‐functionalized...
Promoted by Et<sub>3</sub>N, the 1,3-dipolar [3 + 3] cycloaddition of α-halohydroxamate-based azaoxyallylcations with hydrazonoyl chloride-derived nitrile imines occurred efficiently, and furnished desired products in acceptable chemical yields.
Construction of non-aromatic 1,2,3,6-tetrahydro-1,2,3,4-tetrazines through [4 + 2] cycloaddition α-halogeno hydrazones with azodicarboxylic acid derivatives.
ABSTRACT A viable method for coating of cellulose fiber with quaternarized N‐halamine is reported in this article. The use quaternary ammonium salt group combination can reinforce the antibacterial activity. chemical structure as‐synthesized precursor 4‐(Bromo‐acetic acid methylester)‐4‐ethyl‐2‐ oxazolidinone (BEO) was characterized by 1 H‐NMR. fibers were Fourier transform infrared spectra and X‐ray photoelectron spectra. data confirmed that N‐halamine‐grafted successfully obtained....
In the presence of Et<sub>3</sub>N, [3 + 2] cycloaddition isatins, 2-(aminomethyl)pyridine and isatin-based imines proceeded readily, furnished novel imidazolidine-dispirooxindoles in up to 84% yield with >99 : 1 diastereoselectivity.
In the presence of TMSCl, [3 + 2] cycloaddition oxazol-5-(4H)-ones with nitrones proceeded smoothly and furnished desired isoxazolidin-5-ones high diastereoselectivities in reasonable chemical yields. The structure title compounds was firmly confirmed by X-ray single-crystal analysis.
We present a simple and facile approach for preparing antibacterial magnetic nanoparticles, which were modified with quaternarized N-halamine based cationic polymer (CPQN). The CPQN functionalized nanoparticles (MNPs-CPQN) characterized by X-ray photoelectron spectra, Fourier transform infrared spectroscopy, transmission electron microscopy, scanning thermogravimetric analysis. Antibacterial properties investigated Gram positive bacteria S. aureus negative E. coli. assessment showed that the...
Diastereoselective cycloaddition of <italic>N</italic>-acylhydrazine-derived imines with 3-isothiocyanato oxindoles forming novel imidazolidine-spirooxindoles.
In the presence of sodium carbonate, [4 + 2] cycloaddition α-halogeno hydrazones to imines proceeded readily, and furnished 2,3,4,5-tetrahydro-1,2,4-triazines in moderate high chemical yields.
ABSTRACT In this article, we present a simple method for synthesizing antibacterial cellulose fibers that were modified with cationic polymer and immobilized silver chloride (AgCl) particles. Relatively techniques of graft polymerization onsite precipitation used to fabricate the composites. Scanning electron microscopy images, Fourier transform infrared spectroscopy, X‐ray diffraction, thermogravimetric analysis, energy‐dispersive spectroscopy confirmed immobilization AgCl The observed...