Results 21 to 30 of about 1,612,284 (282)

A detailed UV–Vis spectral investigation of six azo dyes derived from benzoic- and cinnamic acids: experimental and theoretical insight

Comptes Rendus. Chimie, 2021
Six donor–${\pi }$–acceptor azo dyes, with altered donor- (p-hydroxyphenyl- and naphthalene-2-ol) and carboxylic based acceptor groups, were subjected to detailed solvatochromic and tautomeric investigation in different environments by experimental and ...
Matović, Luka, Lađarević, Jelena, Vitnik, Željko, Vitnik, Vesna, Mijin, Dušan   +4 more
doaj   +1 more source

Synthesis and In Vitro Antimicrobial and Anthelminthic Evaluation of Naphtholic and Phenolic Azo Dyes

Journal of Tropical Medicine, 2020
The antimicrobial activity of 2-naphtholic and phenolic azo compounds was determined against seven microbial species, Staphylococcus aureus (ATCC 25923), Streptococcus pyrogenes (clinical), and Enterococcus faecalis (ATCC 29212), Salmonella typhi ...
Joseph Kwasi Adu, Cedric Dzidzor Kodjo Amengor, Nurudeen Mohammed Ibrahim, Cynthia Amaning-Danquah, Charles Owusu Ansah, Dorcas Dzifa Gbadago, Joseph Sarpong-Agyapong   +6 more
doaj   +1 more source

Synthesis and Antibacterial Activity of Rhodanine-Based Azo Dyes and Their Use as Spectrophotometric Chemosensor for Fe³⁺ Ions

Chemosensors, 2020
This research includes the design and synthesis of new derivatives for rhodanine azo compounds (4a−c) containing a naphthalene ring. Physiochemical properties of the synthesized compounds were determined by their melting points, FTIR, 1H-NMR, 13C ...
Dana Akram, Ismail A. Elhaty, Shaikha S. AlNeyadi   +2 more
doaj   +1 more source

Influence of pH on the Kinetics and Products of Photocatalytic Degradation of Sulfonamides in Aqueous Solutions

Toxics, 2022
The aims of the study were to determine the kinetics of the photocatalytic degradation of six sulfonamides in the presence of TiO2-P25 in acidic, neutral, and alkaline solutions and to identify the structures of the stable products.
Dominika Sapińska, Ewa Adamek, Ewa Masternak, Wioleta Zielińska-Danch, Wojciech Baran   +4 more
doaj   +1 more source

Synthesis of New Azo Compounds and Their Application for a Simple Spectrophotometric Determination of Methyldopa Drug Using Anthranilic Acid and 2-Aminopyrimidine as Reagents

Journal of the Turkish Chemical Society, Section A: Chemistry, 2023
65 Türkçe Barbaros AKKURT Journal of the Turkish Chemical Society Section A: Chemistry Araştırma Makalesi EN Synthesis of New Azo Compounds and Their Application for a Simple Spectrophotometric Determination of Methyldopa ...
Ekhlas ABD ALKAREEM, Nuha FARHAN ABD AL-KARİM, Israa I MAHMOU   +2 more
doaj   +1 more source

Synthesis and Identification of Phenyl Azochalcone & bis- azo – Chalcone Derivatives Derived from P-amino Acetophenone [PDF]

Kirkuk Journal of Science, 2018
This work involves the synthesis of different substituted amino-chalcones via claisen- schmidt condensation reaction between p-amino acetophenone and different aromatic substituted benzaldehydes. The second step involves the conversion of amino-chalcones
Zahraa Talib Ghlib, Ahmed Abdul-Hassan, Nihad Ismael Taha   +2 more
doaj   +1 more source

Tuning the gas-liquid-solid segmented flow for enhanced heterogeneous photosynthesis of Azo- compounds

, 2021
Difficult handling the solid catalysts remains one of the pain points in the continuous flow photochemistry. In this work, the gas–liquid-solid segmented flow was employed in the photocatalytic production of azo- compounds (azoxybenzene and azobenzene ...
Wang, G, Zou, H, Peng, M, Li, M, Chen, Y, Zhang, Y, Zhang, J, Tang, Z   +7 more
core   +1 more source

The in situ generation and reactive quench of diazonium compounds in the synthesis of azo compounds in microreactors

Beilstein Journal of Organic Chemistry, 2016
In this paper, a micro-fluidic optimized process for the continuous flow synthesis of azo compounds is presented. The continuous flow synthesis of Sudan II azo dye was used as a model reaction for the study.
Faith M. Akwi, Paul Watts
doaj   +1 more source

Shape switchable azo macrocycles [PDF]

, 2011
The present thesis is organized in three main chapters. The first section discusses a research project for the integration of azobenzene motives as a functional unit in macrocyclic molecular structures.
Müri, Marcel
core   +1 more source

Urease and acetylcholinesterase enzyme inhibitor novel phthalonitrile azo compounds [PDF]

, 2022
1188-1193Based on the relationship between Helicobacter pylori and Alzehimer’s disease, new azo phthalonitrile compounds containing different amino pyridines have been synthesized. These compounds can inhibit both Urease and Acetylcholinesterase, which
Şaşmaz, Selami, Dereci, Oğuz Kağan, Baltaş, Nimet, Kantar, Cihan   +3 more
core   +2 more sources