A5024127080- Chemical Synthesis and Reactions
- Sulfur-Based Synthesis Techniques
- Chemical Synthesis and Analysis
- Synthesis of Indole Derivatives
- Multicomponent Synthesis of Heterocycles
- Molecular Sensors and Ion Detection
- Asymmetric Synthesis and Catalysis
- Advanced biosensing and bioanalysis techniques
- Synthesis and biological activity
- Synthesis of heterocyclic compounds
- Polyoxometalates: Synthesis and Applications
- Luminescence and Fluorescent Materials
- Synthesis and Biological Evaluation
- Axial and Atropisomeric Chirality Synthesis
- Inorganic and Organometallic Chemistry
- Synthetic Organic Chemistry Methods
- Synthesis and Catalytic Reactions
- Asymmetric Hydrogenation and Catalysis
- Synthesis and Characterization of Heterocyclic Compounds
- Organic and Inorganic Chemical Reactions
- Corrosion Behavior and Inhibition
- Catalytic C–H Functionalization Methods
- Advanced Synthetic Organic Chemistry
- Proteoglycans and glycosaminoglycans research
- Organic Chemistry Cycloaddition Reactions
Bharathidasan University
2021
Inha University
2009-2015
Indian Institute of Chemical Technology
2006-2015
Incheon Medical Center
2014
Seoul National University
2012
Synthesis of a novel pyrene derivative sensor (Py-Met) based on amino acid and its fluorescent behavior for Hg(II) in water was investigated. Upon binding, the Py-Met-bearing sulfonamide group exhibited considerable excimer emission at 480 nm along with decrease monomer 383 nm. Py-Met allows selective sensitive ratiometric detection without any interference from other metal ions.
A pyrene derivative chemosensor (Pyr-WH) based on a dipeptide shows highly sensitive ratiometric response to Ag(I) as well silver nanoparticles in aqueous solution at physiological pH. Pyr-WH penetrated live HeLa cells and exhibits intracellular Ag(I). The binding mode of with was characterized fluorescence changes different pH, NMR, ESI mass spectrometer experiments.
The FeCl3·6H2O-catalyzed Friedel−Crafts arylation reactions of N-sulfonyl aldimines or sulfonamidesulfones with electron-rich arenes and heteroarenes, which lead to the formation triarylmethanes bis-heteroarylarylmethanes, are developed. use mild reaction conditions, low catalytic loading, high yield, single step synthesis advantages present procedure.
Fluorescent chemosensors (1 and 2, Py-(Arg)nGlyGlyGly(Arg)nLys(Py)-NH2, n = 2 3) bearing two pyrene (Py) labeled heparin-binding peptides were synthesized for the sensitive ratiometric detection of heparin. The peptidyl 2) sensitively detected nanomolar concentrations heparin in aqueous solutions serum samples via a response. In 100% at pH 7.4, both exhibited significant excimer emission 486 nm as well weak monomer absence Upon addition into solution, increased with blue shift (10 nm) 376...
Mild and efficient InBr3-catalyzed Friedel−Crafts alkylation of heteroaromatic or electron-rich aromatic compounds with α-amido sulfones at room temperature in CH2Cl2 has been developed. The products undergo further leading to unsymmetrical bis-symmetrical triaryl methanes good yield. α-Amido are employed for the synthesis methanes. use mild reaction condition, low catalytic loading, high yield advantages present procedures.
One new homoisoflavonoid, (3E)-2,3-dihydro-6,7-dimethoxy-3[(3-hydroxy-4-methoxyphenyl)methylene]-4H-1-benzopyran-4-one and four naturally analogues, (3E)-3-(1,3-benzodioxol-5-ylmethylene)-2,3-dihydro-7-hydroxy-4H-1-benzopyran-4-one, (3E)-3-(1,3-benzodioxol-5-ylmethylene)-2,3-dihydro-7-methoxy-4H-1-benzopyran-4-one, (3E)-2,3-dihydro-7-hydroxy-3-[(3-hydroxy-4-methoxyphenyl)methylene]-4H-1-benzopyran-4-one (3E)-2,3-dihydro-3-[(3,4-dimethoxyphenyl)methylene]-7-methoxy-4H-1-benzopyran-4-one,...
Abstract Ferric chloride hexahydrate is a highly efficient catalyst for the regioselective arylation of α‐amido sulfones. The products undergo further Friedel–Crafts alkylations with heteroaromatic or electron‐rich arenes to afford unsymmetrical bis‐symmetrical triarylmethanes.
Iodine efficiently catalyzes the three-component coupling of aromatic aldehydes, enolizable ketones or keto esters, and acetonitrile in presence acetyl chloride to afford β-acetamido good yields at room temperature.
Ratiometric fluorescent chemosensors<bold>1</bold>and<bold>2</bold>were synthesized based on tyrosine amino acid derivatives with a pyrene fluorophore.