Results 21 to 30 of about 10,821 (234)

Metallaphotocatalytic Amination of Aryl Chlorides Enabled by Highly Crystalline Acetylene-Based Hydrazone-linked Covalent Organic Frameworks [PDF]

, 2023
Amination of aryl chlorides by metallaphotocatalysis is highly desired but remained practically challenging. Meanwhile, relying on soluble noble-metal photocatalysts suffers from resource scarcity and structural instability which limit their practical ...
Gang, Wu, Qiaowei, Li, Wen-Chang , Peng, Dan-Wei , Zhang, Hui , Wang, Liming, Zhang, Tianhui, Su, Qihan, Lin, Zhan-Ting , Li, Yusran, Yusran, Jiabin, Xing, Yan , Wu, Lingyi , Yang   +12 more
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Synthetic and Biocidal Studies of Zn-Hydrazone Complexes [PDF]

, 2022
A series of hydrazone derivatives were synthesized through multi-step reactions. The 2-(2-oxo-1,2,3,4-tetrahydroquinoline-7-yloxy)acetohydrazide was prepared from 7-hydroxy-3,4-dihydroquinolin-2(1H)-one as starting material. Then the condensation of 2-(2-
Gupta, Nitin, Agarwal, Seema, Nafees, S. M.   +2 more
core   +1 more source

Spectroscopy, Electrochemistry and Photochemistry of Phenylazonaphthalene Dyes [PDF]

, 2010
The spectroscopy, electrochemistry and photochemistry of seven 2-(4-R-phenylazo)naphthalene-4,8-disulfonate dyes (R-Span dyes), were studied to report on their structure and reactivity in water.
Bullivant, Chad Quentin
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[N′-(5-Bromo-2-oxidobenzylidene-κO)-2-chlorobenzohydrazidato-κ2N′,O](methanol-κO)(methanolato-κO)oxidovanadium(V)

Acta Crystallographica Section E, 2011
The VV atom in the title complex, [V(C14H8BrClN2O2)(CH3O)O(CH3OH)], is six-coordinated by one phenolate O, one imine N and one enolic O atom of the hydrazone ligand, one oxide O atom, one methanol O atom and one methoxide O atom in a distorted octahedral
Fu-Ming Wang
doaj   +1 more source

6-Bromo-2'-(2-chlorobenzylidene)nicotinohydrazide and 6-Bromo-2'-(3-bromo-5-chloro-2-hydroxybenzylidene)nicotinohydrazide Methanol Solvate: Synthesis, Characterization, Crystal Structures and Antimicrobial Activities

Acta Chimica Slovenica, 2021
Two newly synthesized nicotinohydrazones, 6-bromo-2'-(2-chlorobenzylidene)nicotinohydrazide (1) and 6-bromo-2'-(3-bromo-5-chloro-2-hydroxybenzylidene)nicotinohydrazide methanol solvate (2), have been obtained and structurally characterized by ...
Hai-Yun Zhu
doaj   +1 more source

Two Zinc(II) Complexes with Similar Hydrazone Ligands: Syntheses, Crystal Structures and Antibacterial Activities

Acta Chimica Slovenica, 2020
A pair of new mononuclear zinc(II) complexes with hydrazone ligands 4-methoxybenzoic acid (1-pyridin-2-ylmethylidene)hydrazide (HLa) and benzoic acid (1-pyridin-2-ylethylidene)hydrazide (HLb) were prepared. They are [Zn(La)2] (1) and [Zn(Lb)2] (2).
Ya-Li Sang, Xue-Song Lin, Wei-Dong Sun
doaj   +1 more source

New Amino Acid-Based Thiosemicarbazones and Hydrazones: Synthesis and Evaluation as Fluorimetric Chemosensors in Aqueous Mixtures

Molecules, 2023
Bearing in mind the interest in the development and application of amino acids/peptides as bioinspired systems for sensing, a series of new phenylalanine derivatives bearing thiosemicarbazone and hydrazone units at the side chain were synthesised and ...
Cátia I. C. Esteves, Maria Manuela M. Raposo, Susana P. G. Costa   +2 more
doaj   +1 more source

Synthesis and Biological Activity Characterization of Novel 5-Oxopyrrolidine Derivatives with Promising Anticancer and Antimicrobial Activity

Pharmaceuticals, 2022
The 1-(4-acetamidophenyl)-5-oxopyrrolidine carboxylic acid was applied for synthesizing derivatives bearing azole, diazole, and hydrazone moieties in the molecule.
Karolina Kairytė, Birutė Grybaitė, Rita Vaickelionienė, Birutė Sapijanskaitė-Banevič, Povilas Kavaliauskas, Vytautas Mickevičius   +5 more
doaj   +1 more source

(E)-4-Hydroxy-N′-(2-hydroxy-3,5-diiodobenzylidene)-3-methoxybenzohydrazide methanol monosolvate

Acta Crystallographica Section E, 2012
In the title compound, C15H12I2N2O4·CH3OH, the hydrazone molecule exists in an E conformation with respect to the C=N bond. The dihedral angle between the rings is 11.9 (2)°.
Xiao-Yan Li
doaj   +1 more source

Vinylogous hydrazone activation in stereoselective synthesis of 2,3-dihydro-1H-pyrrolizines – an organocatalytic, metal-free route to ketorolac [PDF]

, 2022
In this paper, the application of organocatalysis in the synthesis of 2,3-dihydro-1H-pyrrolizines is demonstrated. α,β-Unsaturated aldehydes and pyrrole-based hydrazone readily participated in the formal (3+2)-cycloaddition that was realized according to
Łukasz, Albrecht, Beata, Łukasik, Sebastian, Frankowski, Justyna, Kowalska, Lesław, Sieroń   +4 more
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