Results 1 to 10 of about 48,988 (274)

2,4-Dinitrobenzaldehyde hydrazone [PDF]

Acta Crystallographica Section E, 2008
The title compound, C7H6N4O4, plays an important role in the synthesis of biologically active compounds. The planar hydrazone group is oriented at a dihedral angle of 8.27 (3)° with respect to the benzene ring.
Yufen Zhao, Yuyang Jiang, Chunyan Tan, Ruji Wang, Nan Zhang   +4 more
doaj   +3 more sources

On the unexpected mechanism of isomerization in tautomerizable azo photoswitches [PDF]

Communications Chemistry
In recent years, there has been no shortage of research achievements in light-responsive materials based on azobenzene photoswitches. Of growing interest is the ability to reversibly tune the competing “dark" thermal cis-trans back-isomerization through ...
Coral Hillel, Christopher J. Barrett, William J. Pietro, Ozzy Mermut   +3 more
doaj   +2 more sources

Synthesis, complete assignment of 1H- and 13C-NMR spectra and antioxidant activity of new azine derivative bearing coumarin moiety [PDF]

Bulletin of Natural Sciences Research, 2021
In this research, the synthesis of a new azine derivative with coumarin moiety was performed in three reaction steps, starting from 4-hydroxycoumarin.
Ristić Milenko, Dekić Biljana, Radulović Niko, Aksić Marija   +3 more
doaj   +1 more source

Synthesis of Side-Chain-Free Hydrazone-Linked Covalent Organic Frameworks through Supercritical Carbon Dioxide Activation

Organic Materials, 2021
Supercritical carbon dioxide (scCO2) activation provides milder conditions to process covalent organic frameworks (COFs) without compromising their crystallinity and porosity.
Shashini D. Diwakara, Gregory T. McCandless, Sampath B. Alahakoon, Ronald A. Smaldone   +3 more
doaj   +1 more source

The impact of isatin derivatives on antibiotic production by Streptomyces hygroscopicus CH-7 [PDF]

Hemijska Industrija, 2016
The effect of isatin derivatives as a nitrogen source on antibiotic (Hexaene H-85 and Azalomycine B) production by Streptomyces hygroscopicus CH-7 was studied.
Ćirić Jovan T., Konstantinović Sandra S., Ilić Slavica B., Gojgić-Cvijović Gordana, Savić Dragiša S., Veljković Vlada B.   +5 more
doaj   +1 more source

Unconventional assemblies of bisacylhydrazones: The role of water for circularly polarized luminescence

Aggregate, 2022
Understanding the precise molecular arrangement of chiral supramolecular polymers is essential not only to comprehend complex superstructures like proteins and DNA but also for the development of next‐generation optoelectronic materials, including ...
Hye Jin Cho, Dong Yeun Jeong, Hwihyun Moon, Taewoo Kim, You Kyoung Chung, Yeongdong Lee, Zonghoon Lee, Joonsuk Huh, Youngmin You, Changsik Song   +9 more
doaj   +1 more source

Synthesis a Number of Heterocyclic Compounds Derived From Levofloxacin

Tikrit Journal of Pure Science, 2023
In this paper, the preparation a number of heterocyclic compounds five membered rings like oxadiazole, imidazolidine, thiozolidine, tetrazole, azetidine 2-on.
Ekram Abdullah Basheer, Kalid Matny Al-jaanaby, Feras Shauki Al-joboury   +2 more
doaj   +1 more source

Development and validation of RP-HPLC method for stability evaluation of model hydrazone, containing a pyrrole ring [PDF]

Pharmacia, 2019
RP-HPLC method with UV detection was developed and validated for determination of the chemical stability and stability in close to physiological conditions of a model pyrrole hydrazone ethyl 5-(4-bromophenyl)-1-(1-(2-(4-hydroxy-3-methoxybenzylidene ...
Diana Tzankova, Lily Peikova, Stanislava Vladimirova, Maya Georgieva   +3 more
doaj   +3 more sources

STUDY OF ANTIVIRAL ACTIVITY OF SOME HYDRAZONE PINOSTROBIN DERIVATIVES

Фармация и фармакология (Пятигорск), 2015
New derivatives on the basis of hydrazone pinostrobin molecule were synthesized. Significant antiviral activity of received samples of new hydrazone pinstrobin derivatives was identified.
G. K. Mukusheva, G. M. Baisarov, P. Z. Zhanymkhanova, A. Sh. Turysbaeva, A. P. Bogoyavlensky, V. E. Berezin, S. M. Adekenov   +6 more
doaj   +1 more source

(E)-3-Methyl-N′-(4-nitrobenzylidene)benzohydrazide methanol monosolvate

Acta Crystallographica Section E, 2012
The title hydrazone compound, C15H13N3O3·CH3OH, crystallized as a methanol solvate. The hydrazone molecule has an E configuration about the C=N bond and is almost planar, with a dihedral angle between the benzene rings of 5.3 (3)& ...
Chun-Bao Tang
doaj   +1 more source