[HTML][HTML] Substituted pyrazoles and their heteroannulated analogs—recent syntheses and biological activities

M Ramadan, AA Aly, LEA El-Haleem, MB Alshammari… - Molecules, 2021 - mdpi.com
Pyrazoles are considered privileged scaffolds in medicinal chemistry. Previous reviews have
discussed the importance of pyrazoles and their biological activities; however, few have …

[PDF][PDF] A concise review on synthesis, reactions and biological importance of thienopyrazoles

RM Zaki, AF Saber, AMK El-Dean, SM Radwan - Arkivoc, 2020 - academia.edu
Pyrazoles are five membered heterocycles constitute a higly significant class of compounds
in organic synthesis. Nowadays, pyrazoles and condensed pyrazoles have attracted …

Unconventional and sustainable synthesis of polymethine dyes: Critical overview and perspectives within the framework of the twelve principles of green chemistry

A Antenucci, S Nejrotti, MJM Plata… - European Journal of …, 2022 - Wiley Online Library
Time, energy, and cost saving; waste reduction; health and safety preservation represent
true milestones of green chemistry, as well as some of the most important aspects for the …

Solvatochromism and halochromism of some furo/pyrazole cyanine dyes

H Shindy, M El-Maghraby, FM Eissa - HA Shindy, MA El-Maghraby and FM …, 2021 - osf.io
In this study, the electronic absorption spectra of some furo [2, 3-b] pyrazole cyanine dyes
was recorded and investigated in a number of 6 (six) pure solvents having different polarities …

Preparation, antibacterial activity and absorption spectra of pyrazolo‐oxadiazine cyanine dyes

FM Eissa - Journal of the Chinese Chemical Society, 2009 - Wiley Online Library
Abstract A new pyrazolo [4, 3‐e]‐1, 3, 4‐oxadiazine heterocyclic ring system was prepared
and employed to synthesize cyanine dyes of different methine types, including monomethine …

Characterization, mechanisms and applications in the chemistry of cyanine dyes: A review

HA Shindy - European Journal of Molecular Biotechnology, 2016 - elibrary.ru
In this paper review, some of the important characterizations and mechanisms in the
chemistry of cyanine dyes were explained. This include topics like absorption spectral …

Efficient green synthesis of monomethine cyanines via grinding under solvent-free conditions

FM Eissa, RS Abdel Hameed - Green Processing and Synthesis, 2016 - degruyter.com
A solvent-free, efficient, and green approach for the synthesis of monomethine cyanine dyes
was carried out via grinding at room temperature in the presence of a minimum amount of …

New 1, 3, 4‐Oxadiazinoisoquinoline Methine Cyanine Dyes: Synthesis, Photosensitivity and Antibacterial Activity

FM Eissa, AR Abdelghany - Journal of Heterocyclic Chemistry, 2016 - Wiley Online Library
New heterocyclic ring system including 1, 3, 4‐oxadiazino [6, 5‐c] isoquinoline was
prepared and employed as a precursor for preparation of monomethine and trimethine …

Synthesis of different classes of five/five membered heterocyclic cyanine dyes: A Review paper

HA Shindy - Mini-Reviews in Organic Chemistry, 2012 - ingentaconnect.com
The paper reviews synthesis of different classes of biheterocyclic five/five membered
heterocyclic cyanine dyes. In this review paper detailed synthesis steps for some of the …

[PDF][PDF] Novel polyheterocyclic cyanine dyes: synthesis, photosensitiztion and solvent/electronic transitions correlation

HA Shindy - European Reviews of Chemical Research, 2018 - scholar.archive.org
European researcher. 2010. № 1 Page 1 European Reviews of Chemical Research, 2018, 5(1)
30 Copyright © 2018 by Academic Publishing House Researcher sro Published in the Slovak …