Results 81 to 90 of about 3,195 (187)

Ultra‐Fast and Reversible [2 + 2] Photocycloaddition Enabling Green Light‐Mediated Switching of Polymer Materials

SmartMat, Volume 7, Issue 3, June 2026.
This research introduces an ortho‐palladated oxazolone moiety that can undergo rapid and reversible photocycloaddition by low‐intensity green light irradiation. Integration of such a photoresponsive function into crosslinked polymer structures enables rapid photo‐ and thermo‐switching of polymer properties, presenting a unique light‐directed covalent ...
Wai Lean Koay, Saugat Mondal, Sayan Paul, Xin Yi Oh, Quyen Vu Thi, Zhi Qin Teh, N. D. Pradeep Singh, Vinh X. Truong   +7 more
wiley   +1 more source

Divergent Synthesis of Polycyclic Derivatives via Gold Catalysis

European Journal of Organic Chemistry, Volume 29, Issue 20, 27 May 2026.
Gold(I)‐catalyzed cycloisomerization enables the formation of complex 3D structures from simple enyne precursors. This study presents a divergent strategy to synthesize functionalized bicyclic and tricyclic scaffolds from a common alkynyl ketone.
Emilie Gentilini, Vincent Davenel, Pierre Ligonès, Jean‐Marie Fourquez, Véronique Michelet   +4 more
wiley   +1 more source

Molecular structural, vibrational spectra, dual descriptor, electronic transition and biological evaluations of ethyl 4‑hydroxy-3-methoxycinnamate using density functional theory

Chemical Physics Impact
Quantum chemical, spectroscopic and bioactivity studies of pharmacologically active Ethyl 4‑hydroxy 3‑methoxy ethyl cinnamate (EHMC) were investigated.
G. Bharathy, Johanan Christian Prasana, V.S. Jeba Reeda, M. Prasath, A. Manikandan   +4 more
doaj   +1 more source

A novel DHP-NH2 fluorescent dye for the determination of water content in organic solvents, rice, and aspirin: DFT calculations

Sensors International
A novel aminodihydropyridine derivative (DHP-NH2) was synthesized from hydrazine via a tandem cyclotrimerization of methyl propiolate. DHP-NH2 distinguishably exhibited either strong fluorescence in aprotic solvents or weak fluorescence in protic ...
Kittiporn Nakprasit, Panyakorn Taweechat, Pornthep Sompornpisut, Mongkol Sukwattanasinitt, Waroton Paisuwan, Anawat Ajavakom   +5 more
doaj   +1 more source

Synthesis, crystal structure and physico-chemical properties of 3,3’-[(4-hydroxyphenyl)methyl] bis-(4-hydroxy-2H-chromen-2-one)

Acta Chimica Slovenica, 2014
The compound 3,3’-[(4-Hydroxyphenyl)methyl]bis-(4-hydroxy-2H-chromen-2-one) was synthesized by the Knoevenagel reaction. Crystals, suitable for X-ray data collection were grown by slow evaporation from an ethanol solution.
Denitsa Elenkova, Bernd Morgenstern, Ilia Manolov, Maria Milanova   +3 more
doaj  

Broadband fluorescence reveals mechanistic differences in excited-state proton transfer to protic and aprotic solvents. [PDF]

Chem Sci, 2020
Verma P, Rosspeintner A, Dereka B, Vauthey E, Kumpulainen T.   +4 more
europepmc   +1 more source

Room‐Temperature Helix‐to‐Disc Conversion of Thia[6]helicene S,S‐Dioxides to Coronene via In Situ Phenoxide Anion Generation

Chemistry – A European Journal, Volume 32, Issue 19, 22 May 2026.
In situ phenoxide formation at the benzene terminus triggers room‐temperature conversion of thia[6]helicene S,S‐dioxides to coronene. The solubility contrast drives product precipitation, enabling isolation by simple filtration. This pericyclic annulation between the helical termini provides direct access to coronene‐type planar architectures ...
Kaito Seino, Takashi Murase
wiley   +1 more source

Multiparametric evaluation of structure-photophysical activity correlation: A case study of pyrene-tethered chalcone

Acta Chimica Slovenica
Molecular structures with unique functionalities show interesting photophysical properties. The structure-photophysical activity correlation of synthesized pyrene tethered chalcone (PTC) molecule was envisaged from its solvatochromic shift in 14 ...
Moumin Husain Dar, Syed Andleeb Ishaq, Parvaiz Ahmad Dar, Albieza, Irshad Mohiuddin, Masood Ahmad Rizvi   +5 more
doaj   +1 more source

Efficient Production and Isolation of 3‐Acetamido‐5‐Acetylfuran from N‐Acetyl‐D‐Glucosamine within Protic Ionic Liquids

ChemistryOpen
The transformation of chitin and its monomer N‐acetylglucosamine (NAG) to high‐value organonitrogen chemicals has attracted increasing interest, with 3‐acetamido‐5‐acetylfuran (3A5AF) proposed as a versatile platform chemical.
Emma L. Matthewman, Prof. Jonathan Sperry, Dr. Cameron C. Weber   +2 more
doaj   +1 more source

Ag nanoparticles on arginine-cyanoguanidine functionalized magnetic g-C3N4: A catalyst for nitroaromatic hydrogenation and regioselective click reactions

Heliyon
This study describes the development of a novel hybrid nanocatalyst that was obtained by doping magnetic g-C3N4 with Ag nanoparticles and modifying it with arginine and cyanoguanidine (Ag@Fe3O4-g-C3N4-Arg-CG).
Mansoureh Daraie, Mahmood Tajbakhsh, Ali Ayati, Sara Rashidi   +3 more
doaj   +1 more source