Results 101 to 110 of about 13,716 (259)

Bromo‐Heptahelicene‐Bis‐Thiadiazole: Photophysics, Chiroptics, and Excited‐State Dynamics

open access: yesChemPhysChem, Volume 26, Issue 15, August 4, 2025.
The substitution of a heptahelicene‐bis‐thiadiazole molecule with a bromine heavy atom leads to an increased luminescence quantum yield at room temperature and enhanced circularly polarized luminescence activity at low temperature. Time‐dependent photophysical analyses and theoretical calculations enable to highlight contributions from direct and ...
Debsouri Kundu   +7 more
wiley   +1 more source

Synthesis and characterization of some novel 1,2,4-triazoles, 1,3,4-thiadiazoles and Schiff\u27s bases incorporating imidazole moiety as potential antimicrobial agents [PDF]

open access: yes, 2015
(1,4,5-Triphenylimidazol-2-yl-thio)butyric acid hydrazide (3) was obtained via alkylation of 1,4,5-triphenylimidazol-2-thiol (1) with ethylbromobutyrate, followed by addition of hydrazine hydrate. Treatment of acid hydrazide 3 with carbon disulfide in an
ADEEB AL-SHEIKH ALI   +4 more
core   +3 more sources

Advances in Ligand‐Driven Pd‐Catalyzed C─H Functionalizations: Recent Insights and Updates

open access: yesChemCatChem, Volume 17, Issue 15, August 7, 2025.
The most significant advances in ligand‐driven Pd‐catalyzed organic synthesis over the past two years are presented. Processes involving C─H activation of substrates, avoiding their prefunctionalization are illustrated. Both the activity and selectivity of the catalyst depend on the design of the ligands (pyridones, pyridines, amino acids, phosphines ...
Jesús Moradell   +3 more
wiley   +1 more source

Synthesis of phosphonyl 1,2,3-thiadiazoles

open access: yesHeteroatom Chemistry, 2000
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Lun-Zu Liu   +4 more
openaire   +3 more sources

Syntheses of Diheterocyclic Compounds Based on 2-Thioacetohydrazide-5,7-dimethyl-1,2,4-triazolo[1,5-a]- pyrimidine

open access: yesMolecules, 2008
The syntheses of some diheterocyclic compounds from 2-thioacetohydrazide- 5,7-dimethyl-1,2,4-triazolo[1,5-a]pyrimidine (1) are described. Compound 1 can be converted into triazoles, 1,3,4-oxadiazoles, and 1,3,4-thiadiazoles.
Guang-Fu Yang   +4 more
doaj   +1 more source

A one-pot multistep cyclization yielding thiadiazoloimidazole derivatives

open access: yesBeilstein Journal of Organic Chemistry, 2014
A versatile synthetic procedure is described to prepare the benzimidazole-fused 1,2,4-thiadiazoles 2a–c via a methanesulfonyl chloride initiated multistep cyclization involving the intramolecular reaction of an in-situ generated carbodiimide with a ...
Debabrata Samanta   +3 more
doaj   +1 more source

Alignment of Carbon Nanotubes Comprising Magnetically Sensitive Metal Oxides in Nanofluids [PDF]

open access: yes
The present invention is a nanoparticle mixture or suspension or nanofluid comprising nonmagnetically sensitive nanoparticles, magnetically sensitive nanoparticles, and surfactant(s).
Hong, Haiping, Peterson, G. P. 'Bud'
core   +1 more source

One- Pot synthesis and reactions of Novel 5-(4-fluoro-phenyl)-3-(8-hydroxyquinolin-5- yl)-7-phenyl-5H-thiazolo[3,2-a]pyrimidine-6- carbonitrile as antimicrobial agents [PDF]

open access: yes, 2018
The synthesis of 5-(4-fluoro-phenyl)-3-(8-hydroxyquinolin-5-yl)-7-phenyl-5H-thiazolo[3,2-a]pyrimidine-6-carbonitrile 4 was achieved by one-potthree-component synthesis using p-TSA (10 mol %) in refluxing CH3CN.
Abdelmohsen, S.A.
core   +1 more source

Tautomeric Cyclic Thiones. Part II. Tautomerism, Acidity and Electronic Spectra of Thioamides of the Oxadiazole, Thiadiazole, and Thiazole Groups. [PDF]

open access: bronze, 1966
Jan Sandström   +7 more
openalex   +1 more source

Developmental impact of joint forest planning and management (JFPM) programme on forest dependent communities: experiences from joida, Karnataka [PDF]

open access: yes, 2017
Joint Forest Planning and Management Programme was introduced in the state of Karnataka in the year 1993. A product of the National Forest Policy of 1988, JFPM was an effort in the direction of involving local communities in the management of forest ...
Derekar, Jayanand Hambeer
core  

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