Results 31 to 40 of about 26,240 (223)

Sur la formation «prébiotique» de peptides. Influence d’azoles non condensés et particulièrement du triazole-1,2,4 sur la condensation d’acides α-aminés en milieu aqueux par les polyphosphates

open access: yesCHIMIA, 1981
With the addition of 1,2,4-triazole or imidazole to aqueous solutions 0.1 M in glycine and 0.1 M in trimetaphosphate at room temperature, pH range 6.7-8.9, the yield of triglycine is improved by a factor of 10 to 20; the best yields are obtained with 1 ...
J. Rabinowitz, A. Hampai
doaj   +1 more source

Development of HPLC-Orbitrap method for identification of N-bearing molecules in complex organic material relevant to planetary environments [PDF]

open access: yesIcarus, 2016, 275, pp.259-266, 2016
Although the Cassini Spacecraft and the Huygens lander provided numerous information about Titan atmospheric chemistry and the formation of its aerosols, the exact composition of these aerosols still remains unknown. A fruitful proxy to investigate these aerosols is the use of laboratory experiments that allow producing and studying analogs of Titan ...
arxiv   +1 more source

Synthesis and establishment of physico-chemical constants 2-(5-( chinoline -2-il, 2-hydroxyquinoline-4-іл)-4-R1-1,2,4-triazole-3-ілтіо) acetate acids and their esther

open access: yesФармацевтичний журнал, 2018
The large interest in the plan of search biologically of active agents is caused by the heterocyclic system of 1,2,4-triazole, due to high biological activity, and by the low indexes of toxicness, that inherent it to the structural analogues.
Т. М. Kaplaushenko   +2 more
doaj   +1 more source

Antimicrobial and antifungal activity of new fluorophenyl-containing 1,2,4-triazoles

open access: yesФармацевтичний журнал, 2021
The achievements of the world organic chemistry are most clearly represented by scientific publications that prove the promising nature of heterocyclic substances.
O. A. Bihdan
doaj   +1 more source

Evaluation of SSRT‐Test by Classical Gravimetric Analysis and Optical Topographic Measurement: A Comparative Study

open access: yesPropellants, Explosives, Pyrotechnics, Volume 47, Issue 12, December 2022., 2022
Abstract To establish a database of performance values in the small‐scale shock reactivity test (SSRT), common secondary explosives based on organic nitrates (e. g. PETN) and nitramines (e. g. RDX and HMX) as well as aromatic (e. g. TNT), heteroaromatic (e. g. TKX‐50 and MAD−X1) and open chain systems (e. g. FOX‐7) were investigated.
Lukas Bauer   +3 more
wiley   +1 more source

Synthesis of New Bis-1,2,4-Triazole Derivatives [PDF]

open access: yesMolecules, 2006
A series of new 1,2/1,3-bis[o-(N-methylidenamino-3-aryl-5-phenyl-4H-1,2,4-triazole-4-yl)phenoxy]ethane/propane derivatives 4 were prepared in good yields bytreatment of 4-amino-3-aryl-5-phenyl-4H-1,2,4-triazoles 2 with certain bis-aldehydes 1.Compounds 4 were reduced with NaBH4 to afford the corresponding 1,2/1,3-bis[o-(N-methylamino-3-aryl-5-phenyl-4H-
Bekircan, Olcay, Bektas, Hakan
openaire   +5 more sources

An insight on medicinal attributes of 1,2,4-triazoles

open access: yesEuropean Journal of Medicinal Chemistry, 2020
The present review aims to summarize the pharmacological profile of 1,2,4-triazole, one of the emerging privileged scaffold, as antifungal, antibacterial, anticancer, anticonvulsant, antituberculosis, antiviral, antiparasitic, analgesic and anti-inflammatory agents, etc. along with structure-activity relationship.
Garima Sumran   +2 more
openaire   +3 more sources

5-Amino-3-(4H-1,2,4-triazol-4-yl)-1H-1,2,4-triazole [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
The asymmetric unit of the title compound, C(4)H(5)N(7), comprises two independent but virtually superimposable mol-ecules. Each mol-ecule is planar with the dihedral angles between the five-membered rings being 2.8 (3) and 2.1 (3)°. The crystal structure is formed by an extensive network of relatively strong N-H⋯N hydrogen-bond inter-actions ...
Bing Liu   +4 more
openaire   +3 more sources

Experimental Study on Decomposition and Evaporation Characteristics of N,N,N′,N′-Tetramethylethylenediamine and 1,2,4-Triazole

open access: yesEnergies, 2019
N,N,N′,N′-Tetramethylethylenediamine (TMEDA) is one of the candidate substances of hydrazine for hypergolic bipropellant applications. In this study, two experimental analyses were performed to investigate the characteristics of TMEDA and ...
Jungmin Yu   +2 more
doaj   +1 more source

Synthesis of Some 1,4-Bis (Substituted 1,3,4-Oxadiazoles and 1,2,4-Triazoles) Benzene From Terephthalic Acid [PDF]

open access: yesمجلة التربية والعلم, 1999
In this paper the synthesis of some 1,4-bis-(substituted1,3,4-oxadiazoles and 1,2,4-trizoles) benzene from terephthalic acid is reported. Terephthalic acid was esterified with absolute ethanol in presence of concentrated sulfuric acid to give ethyl ...
K. Daoud, E. Mahmood, M. Salih
doaj   +1 more source

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