Results 1 to 10 of about 52,300 (269)

Recent Advances in the Synthesis of Aromatic Azo Compounds [PDF]

Molecules, 2023
Aromatic azo compounds have -N=N- double bonds as well as a larger π electron conjugation system, which endows aromatic azo compounds with wide applications in the fields of functional materials.
Meng-Yun Zhao, Yue-Feng Tang, Guo-Zhi Han   +2 more
doaj   +2 more sources

Characterization of buccal cell DNA after exposure to azo compounds: a cross-sectional study [version 2; peer review: 2 approved] [PDF]

F1000Research, 2020
Background: Azo compounds, containing naphthol and diazonium salts, are synthetic dyes widely used in the batik industry. Azo compounds are considered toxic when they are exposed to human tissue.
Juni Handajani, Urfa Tabtila, Nadia Rully Auliawati, Abdul Rohman   +3 more
doaj   +2 more sources

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

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   +2 more sources

Electron-transfer initiated nucleophilic substitution of thiophenolate anion by 1-chloro-substituted 4-(thiazol-2-ylazo)naphthalenes

Electrochemistry Communications, 2020
In this work, the electrochemical transformation of 5-chloro-2-[(4-chloronaphthalen-1-yl)azo]thiazoles (A) into the corresponding radical anion A·− and its subsequent reaction with diphenyldisulfide (PhSSPh) was studied.
Evgenia Dmitrieva, Xiuling Yu, Horst Hartmann   +2 more
doaj   +1 more source

Palladium-mediated base-free and solvent-free synthesis of aromatic azo compounds from anilines catalyzed by copper acetate

Green Processing and Synthesis, 2022
Herein, we report a new one-step direct synthesis of aromatic azo compounds from anilines under mild conditions. With the catalysis of copper acetate mediated by palladium salt, rapid conversion of anilines to aromatic azo compounds can be observed under
Jiang Bo, Du Yue-Yue, Han Guo-Zhi
doaj   +1 more source

Highly efficient and simultaneous catalytic reduction of multiple toxic dyes and nitrophenols waste water using highly active bimetallic PdO–NiO nanocomposite

Scientific Reports, 2021
Azo dyes and nitrophenols have been widely used in the various industry which are highly toxic and affecting the photosynthetic cycle of aquatic organism. The industry disposals increase the accumulation of azo compounds in the environment.
A. G. Ramu, Dongjin Choi
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

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, Characterization and Biological Evaluation of Some Azo and Azo-Schiff Compounds [PDF]

Kirkuk Journal of Science, 2019
This work involves the preparation of some new azo and azo-Schiff compounds derived from benzothiophene, dibenzothiophene, and diamines (1, 5-diaminonaphthalene, and thiocarbohydrazide).
Hadi Azeez, Ahmed Al-kadhimi, Nashwan Tapabashi   +2 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