Results 151 to 160 of about 14,929 (209)

Highly regioselective heterocyclization reactions of 1H-1,2,4-triazole-3-thiols with chloroacetylenephosphonates

Tetrahedron Letters, 2012
1-Chloroacetylene-2-phosphonates react with 1H-1,2,4-triazole-3-thiols in anhydrous acetonitrile with high regioselectivity to form the fused heterocycles, 6-(dialkoxyphosphoryl)-3H-thiazolo[3,2-b][1,2,4]triazol-7-ylium chlorides 1–5. A significant difference from the previously known reactions of binucleophiles with haloacetylenes is the involvement ...
Elena B. Erkhitueva, Albina V. Dogadina, Andrey V. Khramchikhin, Boris I. Ionin   +3 more
openaire   +1 more source

Synthesis, characterization, molecular docking studies of new alkyl derivatives of 5-(2-bromo-4-fluorophenyl)-4-ethyl-4H- -1,2,4-triazole-3-thiol.

Ceska a Slovenska farmacie : casopis Ceske farmaceuticke spolecnosti a Slovenske farmaceuticke spolecnosti, 2023
The main goal of this article is to present the results of the synthesis of new alkyl derivatives of 5-(2-bromo4-fluorophenyl)-4-ethyl-4H-1,2,4-triazole-3-thiol and molecular docking studies against COX-1 and COX-2.
R. Shcherbyna, V. Kalchenko, S. Kulish, V. Salionov, L. Morozova, Natalia Nedorezaniuk, O. Mazur   +6 more
semanticscholar   +1 more source

Detection of aldehydes with 4‐amino‐5‐hydrazino‐1,2,4‐triazole‐3‐thiol as spray reagent

Lipids, 1973
AbstractA spray reagent of 4‐amino‐5‐hydrazino‐1,2,4‐triazole‐3‐thiol, 2% in aqueous 1N NaOH, was used for the detection of aldehydes on chromatograms of lipids. Purple spots are produced with aldehydes, and 1 μg of palmitaldehyde can be detected easily on thin layer chromatograms.
C H, Rahn, H, Schlenk
openaire   +2 more sources

Mechanism of 4‐methyl‐1,2,4‐triazol‐3‐thiole reaction with formaldehyde. A DFT study

Journal of Physical Organic Chemistry, 2007
AbstractContrary to the typical nucleophilic substitution, occurring on the sulfur atom of 4‐methyl‐1,2,4‐ triazol‐3‐thiole, the reaction with formaldehyde leads to the formation of the NC bond rather than the SC bond. The mechanism of this reaction has been characterized theoretically.
Monika Wujec, Piotr Paneth
openaire   +1 more source

Corrosion Inhibition of Copper in Seawater by 4-Amino-4H-1,2,4-Triazole-3-Thiol

Corrosion, 2012
Corrosion inhibition of copper in clean and sulfide-polluted salt water by 4-amino-4H-1,2,4-triazole-3-thiol (ATATH) was investigated. Potentiodynamic and potentiostatic polarization tests were performed. The effect of temperature and sulfide concentration was addressed.
F.M. Al Kharafi, I.M. Ghayad, R.M. Abdallah   +2 more
openaire   +1 more source

ChemInform Abstract: Chemical Interactions Between 1,2,4‐Triazole‐3‐thiols and π‐ Acceptors.

ChemInform, 1994
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.
A. A. HASSAN, N. K. MOHAMED, Y. R. IBRAHIM, K. U. SADEK, A.‐F. E. MOURAD   +4 more
openaire   +1 more source

An Acid Inhibitor Research: 5-Phenyl-1H-1,2,4-triazole-3-thiol

Protection of Metals and Physical Chemistry of Surfaces, 2019
The effect of 5-Phenyl-1H-1,2,4-triazole-3-thiol (5PTT) on the corrosion of mild steel which is used in the industry-widely, in hydrochloric acid solution was investigated as electrochemically and qualitatively. Inhibition efficiency of 5PTT on mild steel surface was studied by EIS, potentiodynamic polarization, SEM and FTIR techniques. The experiments
openaire   +1 more source

Cyanoethylation and carboxyethylation of 5-benzofuryl-4-substituted 4H-1,2,4-triazole-3-thiols

Russian Journal of General Chemistry, 2017
Base-catalyzed reactions of 5-benzofuryl-4-substituted 4H-1,2,4-triazole-3-thiols with acrylonitrile and acrylic acid afforded 2-(2-cyanoethyl)- or 2-(2-carboxyethyl)triazoline-3-thiones. Attempts to obtain the corresponding sulfanyl derivatives failed.
M. A. Kaldrikyan, N. S. Minasyan
openaire   +1 more source

Chemical Interactions between 1,2,4-Triazole-3-thiols and π-Acceptors

Bulletin of the Chemical Society of Japan, 1993
Abstract 4-Amino-5-mercapto-5-substituted 4-amino-1,2,4-triazole-3-thiols 1a, b reacted with tetrachloro-, tetrafluoro-p-benzoquinone and 2,3-dichloro-1,4-naphthoquinone as well as 2-(dicyanomethylene)-1,3-indandione via charge-transfer (CT) complex formation giving naphthotriazolothiadiazinone 2a—d, bistriazolobenzobisthiadiazine 3a—d ...
Alaa A Hassan, Nasr K Mohamed, Yusria R Ibrahim, Kamal U Sadek, Aboul-Fetouh E Mourad   +4 more
openaire   +1 more source

Corrosion inhibition of 316 stainless steel in 2M HCl by 4-{[4-(dimethylamino)benzylidene]amino}-5-methyl-4H-1,2,4-triazole-3-thiol

Chemical Data Collections, 2019
The corrosion inhibitory action of a Schiff base, 4-{[4-(dimethylamino)benzylidene]amino}-5-methyl-4H-1,2,4-triazole-3-thiol (DBAMTT), on 316 stainless steel (316 SS) in 2M HCl was studied using potentiodynamic polarisation technique, electrochemical ...
N. Shet, R. Nazareth, P. A. Suchetan
semanticscholar   +1 more source