A5045640595- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Molecular spectroscopy and chirality
- Analytical Chemistry and Chromatography
- Supramolecular Chemistry and Complexes
- Catalytic C–H Functionalization Methods
- Supramolecular Self-Assembly in Materials
- Molecular Sensors and Ion Detection
- Crystallography and molecular interactions
- Oxidative Organic Chemistry Reactions
- Synthetic Organic Chemistry Methods
- Glutathione Transferases and Polymorphisms
- Covalent Organic Framework Applications
- Polyoxometalates: Synthesis and Applications
- Synthesis and Catalytic Reactions
- Chemical Synthesis and Characterization
- Magnetism in coordination complexes
- Chemical Thermodynamics and Molecular Structure
- Radiation Therapy and Dosimetry
- Gas Sensing Nanomaterials and Sensors
- Various Chemistry Research Topics
- Cardiac Imaging and Diagnostics
- Mechanical Behavior of Composites
- Enzyme Structure and Function
- Fluorine in Organic Chemistry
Tianjin University
2004-2023
Henan Normal University
2012
Tiara[5]arenes (T[5]s), a new class of five-fold symmetric oligophenolic macrocycles that are not accessible from the addition formaldehyde to phenol, were synthesized for first time. These pillar[5]arene-derived structures display both unique conformational freedom, differing pillararenes, with rich blend solid-state conformations and excellent host-guest interactions in solution. Finally we show how this novel macrocyclic scaffold can be functionalized variety ways used as functional...
Abstract The construction of nanotubes with well-defined structures, although synthetically challenging, offers the prospect studying novel chemical reactions and transportation within confined spaces, as well fabricating molecular devices nanoporous materials. Here we report a discrete nanotube, namely covalent organic pillar COP-1 , synthesized through [2 + 5] imine condensation reaction involving two penta-aldehyde macrocycles five phenylenediamine linkers. A pair enantiomeric nanotubes,...
The development of an efficient synthetic route toward rim-differentiated C5-symmetric pillar[5]arenes (P[5]s), whose two rims are decorated with different chemical functionalities, opens up successive transformations this macrocyclic scaffold. This paper describes a gram-scale synthesis penta-hydroxy P[5] precursor, and range highly reactions that allow functionalizing either rim at will via, e.g., sulfur(VI) fluoride exchange (SuFEx) reactions, esterifications, or Suzuki-Miyaura coupling....
Abstract Tiara[5]arenes (T[5]s), a new class of five‐fold symmetric oligophenolic macrocycles that are not accessible from the addition formaldehyde to phenol, were synthesized for first time. These pillar[5]arene‐derived structures display both unique conformational freedom, differing pillararenes, with rich blend solid‐state conformations and excellent host–guest interactions in solution. Finally we show how this novel macrocyclic scaffold can be functionalized variety ways used as...
A class of novel spirooxindole compounds (2) were readily synthesized, in a metal-free environment, from N-arylamide derivatives (1) via intramolecular oxidative cyclization. Direct C(sp2)-C(sp3) bond formation was realized with the least-studied PhI(OMe)2 as an oxidant, formed situ reaction between PhIO and MeOH.
A general and efficient lactonization method of readily available 2-alkynylbenzoates affording biologically important isochromenones has been realized via a solely BF3·Et2O-mediated 6-endo-dig cyclization process under mild conditions. An alternative mechanistic pathway in which BF3·Et2O activates the carbonyl ester moiety, rather than alkyne triple bond, was postulated on basis control experiment results. Gram-scale reaction further application for assembly more complex molecules...
Abstract Upon treatment with solely a hypervalent iodine reagent of phenyliodine(III) bis(trifluoroacetate) (PIFA), 3‐(2‐hydroxyphenyl)‐3‐oxo‐ N ‐phenyl propanamides and series its derivatives were conveniently converted to class undocumented spirofurooxindoles under mild conditions. Control experiments provided evidence that this spirocyclization process encompassed cascade oxidative reactions involving the formation C−O bond prior C−C bond. magnified image
A series of tests were conducted to study the moisture absorption behaviors carbon fiber-reinforced monomer casting nylon (CF/MC) composites with fiber contents 10 and 15 vol.%, their effects on mechanical properties. The results show that behavior CF/MC obeys a Fickian relationship. maximum uptake has been found decrease increase volume fraction. rate time reach saturation fall as immersion medium temperature increases. Furthermore, great in content is observed pH values decrease. It intake...
Bi2WO6 with a flower-like structure was successfully synthesised by simple surfactant-free hydrothermal method. The structures were composed of many interweaved nanosheets to form an open porous structure. BET results showed that had large surface area 17.8 m2/g, which 28 times higher than the prepared solid state reaction (SSR-Bi2WO6). A possible formation mechanism is proposed. Owing area, and high surface-to-volume ratios, exhibited better photocatalytic activity SSR-Bi2WO6 for...
A novel methodology for performing the ortho arylation of acetanilides via C-H activation and cross-coupling with trialkoxyarylsilanes is introduced. Cu(OTf)2 hereby used as oxidant AgF fluoride source activating trialkoxysilanes cross-coupling.