Results 11 to 20 of about 159 (104)

Microwave Assisted Synthesis of Some New Fused 1,2,4-Triazines Bearing Thiophene Moieties With Expected Pharmacological Activity

Molecules, 2011
Rapid and efficient solvent-free synthesis of 4-amino-3-mercapto-6-[2-(2-thienyl)vinyl]-1,2,4-triazin-5(4H)-one 1 under microwave irradiation is described. Some new fused heterobicyclic nitrogen systems such as 1,2,4-triazino[3,4-b][1,3,4]thiadiazinones,
Mosselhi A. Mosselhi, Mohamed M. Youssef, Hosam A. Saad   +2 more
doaj   +4 more sources

Novel 1, 2, 4-Triazoles as Antifungal Agents. [PDF]

Biomed Res Int, 2022
The development of innovative antifungal agents is essential. Some fungicidal agents are no longer effective due to resistance development, various side effects, and high toxicity. Therefore, the synthesis and development of some new antifungal agents are necessary. 1,2,4‐Triazole is one of the most essential pharmacophore systems between five‐membered
Kazeminejad Z, Marzi M, Shiroudi A, Kouhpayeh SA, Farjam M, Zarenezhad E.   +5 more
europepmc   +2 more sources

What makes a molecule a pre‐ or a post‐herbicide – how valuable are physicochemical parameters for their design?

Pest Management Science, Volume 77, Issue 11, Page 4863-4873, November 2021., 2021
A high number of parameters influence the fate of herbicides. General characteristics of pre‐ or post‐emergence herbicides can therefore not be defined yet. Abstract Pre‐emergence herbicides are taken up by seeds before germination and by roots, hypocotyls, cotyledons, coleoptiles or leaves before emergence, whereas post‐emergence herbicides are taken ...
Hansjörg Krähmer, Helmut Walter, Peter Jeschke, Klaus Haaf, Peter Baur, Richard Evans   +5 more
wiley   +1 more source

Synthesis of Some Novel Fluorinated/Nonfluorinated α‐Amino Acids, Bearing 3‐Thioxo‐5‐oxo‐1,2,4‐triazin‐6‐yl and Steroidal Moieties, and Evaluation of Their Amylolytic Effects against Some Fungi, Part‐II

Heteroatom Chemistry, Volume 2020, Issue 1, 2020., 2020
Some new fluorinated/nonfluorinated α‐amino acids bearing 3‐thioxo‐5‐oxo‐1,2,4‐triazin‐6‐yl and steroidal moieties have been obtained from condensation of the corresponding amino‐triazinones with the steroid (Epiandrosterone). This was followed by the addition of HCN and, finally, acidic hydrolysis.
Reda M. Abdel-Rahman, Wafa A. Bawazir, Gianluigi Broggini   +2 more
wiley   +1 more source

Review of the existing maximum residue levels for metamitron according to Article 12 of Regulation (EC) No 396/2005

EFSA Journal, Volume 18, Issue 1, January 2020., 2020
Abstract According to Article 12 of Regulation (EC) No 396/2005, EFSA has reviewed the maximum residue levels (MRLs) currently established at European level for the pesticide active substance metamitron. To assess the occurrence of metamitron residues in plants, processed commodities, rotational crops and livestock, EFSA considered the conclusions ...
European Food Safety Authority (EFSA), Maria Anastassiadou, Giovanni Bernasconi, Alba Brancato, Luis Carrasco Cabrera, Luna Greco, Samira Jarrah, Aija Kazocina, Renata Leuschner, Jose Oriol Magrans, Ileana Miron, Stefanie Nave, Ragnor Pedersen, Hermine Reich, Alejandro Rojas, Angela Sacchi, Miguel Santos, Alois Stanek, Anne Theobald, Benedicte Vagenende, Alessia Verani   +20 more
wiley   +1 more source

3-(2,4-Difluorophenyl)-1-(pyridin-4-yl)benzo[4,5]imidazo[1,2-d][1,2,4]triazin-4(3H)-one

IUCrData, 2016
In the title compound, C20H11F2N5O, the central 13-membered ring system (r.m.s. deviation = 0.028 Å) makes a dihedral angle of 53.13 (7)° with the difluorophenyl ring and 79.98 (7)° with the pyridine ring.
Bassam Abu Thaher, Dieter Schollmeyer, Basem Qeshta, Hans-Peter Deigner   +3 more
doaj   +1 more source

1-(Pyridin-4-yl)-3-(2,4,6-trichlorophenyl)benz[4,5]imidazo[1,2-d][1,2,4]triazin-4(3H)-one

IUCrData, 2016
In the title compound, C20H10Cl3N5O, the 13-membered ring system makes dihedral angles of 78.64 (9)° with the trichlorophenyl ring and 62.60 (10)° with the pyridine ring.
Bassam Abu Thaher, Dieter Schollmeyer, Basem Qeshta, Kanan M. Wahedy, Ihab M. Almasri, Rami Y. Morjan, Hans-Peter Deigner   +6 more
doaj   +1 more source

Síntesis y evaluación de compuestos heterocíclicos derivados de ?-hidroxi ácidos grasos con interés industrial potencial [PDF]

, 2006
T2-Hydroxyheptadecanoic acid chloride (2) reacted with anthranilic acid to produce 2-substituted-3,1-benzoxazin-4-one (3) which was used as starting material to synthesize some condensed and non-condensed heterocyclic compounds by reaction with nitrogen ...
Eissa, A. M. F., El-Sayed, R.
core   +3 more sources

1,2,4-Triazine Chemistry Part II: Synthetic approaches for phosphorus containing 1,2,4-triazine derivatives [PDF]

, 2010
This review represents the methods developed for the synthesis of phosphorus containing 1,2,4-triazine moieties. These methods depends on the phosphorylation of side functional groups of 1,2,4-triazines and cyclization of side functional groups of 1,2,4 ...
Abdel-Rahman, Reda Mohammady, Ali, Tarik El-Sayed, Ibrahim, Magdy Ahmed   +2 more
core   +1 more source

Crystal structures of pure 3-(4-bromo-2-chlorophenyl)-1-(pyridin-4-yl)benzo[4,5]imidazo[1,2-d][1,2,4]triazin-4(3H)-one and contaminated with 3-(4-bromophenyl)-1-(pyridin-4-yl)benzo[4,5]imidazo[1,2-d][1,2,4]triazin-4(3H)-one

Acta Crystallographica Section E: Crystallographic Communications, 2017
The side product of the cyclocondensation reaction between ethyl benzimidazole-2-carboxylate and the nitrile imine of the corresponding hydrazonyl chloride, C20H11BrClN5O, crystallized in two crystal forms. Form (1) is a co-crystal of the target compound
Kanan Wahedy, Bassam Abu Thaher, Dieter Schollmeyer, Ihab Almasri, Rami Morjan, Basem Qeshta, Hans-Peter Deigner   +6 more
doaj   +1 more source