Results 51 to 60 of about 30,894 (155)

Regioselective formation of new 3-S-alkylated-1,2,4-triazole-quinolones

, 2021
Regioselective synthesis of quinolone-1,2,4-triazoles was established starting from 4-hydroxyquinol-2-ones. The strategy started by the reaction of ethyl bromoacetate with 4-hydroxyquinoline to give the corresponding ethyl oxoquinolinyl acetates, which ...
Alan B. Brown (11775964), Yaseen A.M.M. Elshaier (11775961), Martin Nieger (1628914), Mohamed Ramadan (3633547), Hazem M. Fathy (11775967), Ashraf A. Aly (3184356), Stefan Bräse (2454700), Mohamed Abd El-Aziz (11775958)   +7 more
core   +1 more source

1-[(1-{[(1S,2R,6R,8R,9S)-4,4,11,11-Tetramethyl-3,5,7,10,12-pentaoxatricyclo[7.3.0.02,6]dodecan-8-yl]methyl}-1H-1,2,3-triazol-4-yl)methyl]-2,3-dihydro-1H-indole-2,3-dione

IUCrData, 2017
The title compound,C23H26N4O7, adopts a Z-shaped conformation, with a dihedral angle between the mean planes of the dihydroindole and triazole rings of 70.36 (7)°.
Fatima-Zahrae Qachchachi, Joel T. Mague, Youssef Kandri Rodi, Amal Haoudi, Abdeslem Ben-Tama, El Mokhtar Essassi   +5 more
doaj   +1 more source

Reasoned opinion on the review of the existing maximum residue levels (MRLs) for propiconazole according to Article 12 of Regulation (EC) No 396/2005 [PDF]

EFSA Journal, 2015
According to Article 12 of Regulation (EC) No 396/2005, the European Food Safety Authority (EFSA) has reviewed the Maximum Residue Levels (MRLs) currently established at European level for the pesticide active substance propiconazole.
European Food Safety Authority
doaj   +1 more source

Regioselective Access to 1,2,4-Triazole-Fused N‑Heterocycle, Pyrrolo[1,2‑a][1,2,4]triazolo[5,1‑c]pyrazine, via Double Dehydrative Cyclizations

, 2023
A highly efficient and regioselective approach to a novel 1,2,4-triazole-fused N-heterocyclic scaffold, pyrrolo[1,2-a][1,2,4]triazolo[3,4-c]pyrazine, was established by base-promoted reaction of pyrrole-2-carbonitrile-derived substrate with acyl ...
Hyeyeon Kim (6937604), Ikyon Kim (1478845), Hyunjin Oh (3947297), Hyunjin Oh, Hyeyeon Kim, Ikyon Kim   +5 more
core   +1 more source

Cu(OTf)₂-Catalyzed 1,2,3-triazole-ring-controlled selective phenolic O–H bond methylthiomethylation

, 2019
Copper-catalyzed selective methylthiomethylation of 1,4-disubstituted 1,2,3-triazole phenols using DMSO as a methylthiomethylation reagent was achieved.
Weigen Du (6918761), Yubo Jiang (4426555), Huiling Cheng (2898452), Xinyuan Ma (5262572), Wei Liu (20030)   +4 more
core   +1 more source

Triazole-phosphine Pd(II)-Enabled Dehydrogenation of Alcohols or Amines: A Combination of Experimental and Theoretical Study

, 2022
We describe a novel triazole-phosphine Pd(II) (TPP) complex-catalyzed dehydrogenation reaction of alcohols or amines by using iodobenzene as the oxidant, in which a unique butterfly TPP dimer is first prepared via a three-component reaction of 1,2,3 ...
Yi Tian (102226), Meili Hou (4514635), Baosheng Li (290758), Jingpeng Han (6983903), Han Luo (302386), Yilin Liu (1991839), Yu Lan (132241), Ruopeng Bai (1425283), Lei Liu (5074)   +8 more
core   +2 more sources

Ethyl 2-(5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7-yl)pent-4-enoate

IUCrData, 2018
In the title molecule, C13H16N4O2, the fused triazolopyrimidine ring system is planar. In the crystal, inversion-related C—H...O hydrogen bonds form dimers that are linked into chains extending along the a-axis direction by inversion-related C—H...π(ring)
Sanae Lahmidi, Mohamed El Hafi, Ahmed Moussaif, Mohammed Benchidmi, El Mokhtar Essassi, Joel T. Mague   +5 more
doaj   +1 more source

Dibenzyl({1-[(4-methyl-2-phenyl-4,5-dihydro-1,3-oxazol-4-yl)methyl]-1H-1,2,3-triazol-4-yl}methyl)amine

IUCrData, 2017
In the title compound, C28H29N5O, the molecule adopts an approximate U-shape, a conformation imposed at least in part by an intramolecular π–π contact between the two five-membered rings, which display a centroid-to-centroid separation of 3.6522 (7) Å ...
Salaheddine Boukhssas, Younas Aouine, Hassane Faraj, Anouar Alami, Abdelilah El Hallaoui, Hafid Zouihri   +5 more
doaj   +1 more source

Synthesis of Dihydro-3,1-benzoxazine Derivatives from 1,3-Amino Alcohols and N‑Sulfonyl-1,2,3-triazole

, 2023
An efficient rhodium-catalyzed synthesis of dihydro-3,1-benzoxazine derivatives has been accomplished from aniline-derived 1,3-amino alcohols and N-sulfonyl-1,2,3-triazole.
Kavuri Rupa (15426210), Pazhamalai Anbarasan (1555108), Dongari Yadagiri (1814839), Ratnam Bagavathi (15426213)   +3 more
core   +2 more sources

Synthesis and Antimicrobial Activity of Some New Benzimidazole Derivatives

Molecules, 2000
Reaction of 3-(2-methylbenzimidazol-1-yl)propanoic acid hydrazide (1) with CS2/KOH gave oxadiazole 2 which underwent Mannich reaction to give 3. Compound 2 was treated with hydrazine hydrate to give triazole 4 which was treated with both aldehydes and ...
S. H. Ali Abdelwahed, H. H. Fahmy, Afaf H. El-masry   +2 more
doaj   +1 more source