Reactions of 3-nitro-1,2,4-triazole derivatives with alkylating agents. 8*. Alkylation of 3-nitro-5-R-1,2,4-triazoles with derivatives of diethylene glycol in the presence of alkali

2011 ◽  
Vol 47 (1) ◽  
pp. 55-59 ◽  
Author(s):  
G. T. Sukhanov ◽  
G. V. Sakovich ◽  
A. G. Sukhanova ◽  
J. V. Filippova ◽  
J. Yu. Oleshchenko
Author(s):  
O.A. Bihdan ◽  
V.V. Parchenko

Current trends in the search for new biologically active compounds among synthetic molecules have arguably proved a priority in studies of the heterocyclic 1,2,4-triazole system. For many years, 1,2,4-triazole derivatives remain the object of close attention of scientists of various scientific fields. The unique properties of 1,2,4-triazole derivatives include high reactivity, which allows different modification of this system, practical absence of toxicity of these derivatives and the presence of a wide range of biological, pharmacological properties, which in the complex provides the prerequisites for the creation of new biologically active compounds, and in the future, active pharmaceutical ingredients (AFI). The aim of our work is to investigate some transformations in a number of derivatives of 5-(thiophen-3-ylmethyl) -4-R1-1,2,4-triazole-3-thiol, to study the physicochemical properties of the new synthesized compounds. A well-known fact remains the successful attempt of many scientists involved in the study of the heterocyclic 1,2,4-triazole system to synthesize potential biologically active compounds. The process of creating new molecules is very painstaking and requires considerable effort. The chemical approaches for the synthesis of the starting compounds required for further transformations are well known and described. Therefore, we used the corresponding N-R1-2 as intermediates for the synthesis of new 5-(thiophen-3-ylmethyl) -4-R1-1,2,4-triazole-3-thiols appropriate ones were used N-R1-2-(2-(thiophen-3-yl) acetyl) hydrazinocarbothioamide.


2016 ◽  
Vol 13 (2) ◽  
pp. 345-359
Author(s):  
Baghdad Science Journal

This research includes the synthesis of some new different heterocyclic derivatives of 5-Bromoisatin. New sulfonylamide, diazine, oxazole, thiazole and 1,2,3-triazole derivatives of 5-Bromoisatin have been synthesized. The synthesis process started by the reaction of 5-Bromoisatin with different reagents to obtain schiff bases of 5-Bromoisatin intermediate compounds(1, 8, 19) by using glacial acetic acid as a catalyst in three routes. The first route, 5-Bromoisatin reacted with p-aminosulfonylchloride to product compound(1), then converted to sulfonyl amide derivatives(2-7) by the reaction of compound(1) with different substituted primary aromatic amine in absolute ethanol. The second route includes the reaction of 5-Bromoisatin reacted with ethyl glycinate to give 5-bromo-3-(Ethyl imino acetate)-2-oxo indole(8), which undergo react with hydrazine hydrate 80% to obtain hydrazine derivatives(9) that react with different acid anhydrides to obtain diazine derivatives(10-14). Also compound(8) reacts with urea and thiourea to give compounds(15,16) which undergo cyclization with p-bromophenacylbromide in absolute ethanol as a solvent to obtain oxazole (17) and thiazole (18), respectively. The third route included the reaction of 5-Bromoisatin with p-phenylenediamine in ethanol to obtain compound(19) which is converted to new substitutes 1,2,3-triazole derivatives(22,23) by diazotation of compound(19) and treating the resulted salt(20) with sodium azid, then acetylaceton or ethylacetoacetate, respectively. Newly synthesized compounds were identified by spectral methods. (FTIR, 1H-NMR, 13C-NMR) and measurements of some of its physical properties and also some specific reactions. Furthermore the effects of the synthesized compounds were studied on some strains of bacteria.


2018 ◽  
Vol 16 (17) ◽  
pp. 3168-3176 ◽  
Author(s):  
Gastón Silveira-Dorta ◽  
Sampad Jana ◽  
Lucie Borkova ◽  
Joice Thomas ◽  
Wim Dehaen

An easy, good-yielding access to functionalized enantiomerically pure 1,2,3-triazole derivatives of amino acids using commercially available ketones and amino esters is described.


Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 652 ◽  
Author(s):  
Monika Olesiejuk ◽  
Agnieszka Kudelko ◽  
Marcin Swiatkowski ◽  
Rafal Kruszynski

New derivatives of 4-alkyl-3,5-diaryl-4H-1,2,4-triazole were synthesized utilizing the Suzuki cross-coupling reaction. The presented methodology comprises of the preparation of bromine-containing 4-alkyl-4H-1,2,4-triazoles and their coupling with different commercially available boronic acids in the presence of ionic liquids or in conventional solvents. The obtained compounds were tested for their luminescence properties.


2020 ◽  
Vol 46 (4) ◽  
pp. 537-541
Author(s):  
Zh. B. Satpaeva ◽  
Z. T. Shulgau ◽  
S. B. Akhmetova ◽  
O. A. Nurkenov ◽  
S. D. Fazylov ◽  
...  

2016 ◽  
Vol 147 (12) ◽  
pp. 2151-2156 ◽  
Author(s):  
Mohammad Mahdavi ◽  
Mina Saeedi ◽  
Maryam Karimi ◽  
Niloufar Foroughi ◽  
Fatemeh Hasanshahi ◽  
...  

1984 ◽  
Vol 15 (20) ◽  
Author(s):  
A. DA SETTIMO ◽  
O. LIVI ◽  
G. BIAGI ◽  
A. LUCACCHINI ◽  
S. CASELLI

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