Zobrazeno 1 - 10
of 235
pro vyhledávání: '"Abdelwahed R"'
Publikováno v:
Results in Chemistry, Vol 9, Iss , Pp 101666- (2024)
1,3,4-Selenadiazoles and 1,3,4-thiadiazolese, were synthesized from the reaction of hydrazonoyl bromide with potassium thiocyanate and potassium selenocyanate, respectively. Also, treatment of hydrazonoyl bromide with malononitrile gave pyrazole-4-ca
Externí odkaz:
https://doaj.org/article/5aa435dab2c14a52a27658fd93a1ed2a
Autor:
Ahmed M. Hussein, Sobhi M. Gomha, Nahed A. Abd El-Ghany, Magdi E. A. Zaki, Basant Farag, Sami A. Al-Hussain, Abdelwahed R. Sayed, Yasser H. Zaki, Nadia A. Mohamed
Publikováno v:
ACS Omega, Vol 9, Iss 12, Pp 13666-13679 (2024)
Externí odkaz:
https://doaj.org/article/84bfcfcc50c942eaa1f66b26bddba023
Publikováno v:
Current Issues in Molecular Biology, Vol 44, Iss 7, Pp 2956-2966 (2022)
Herein we studied the preparation of different thiazoles via the reaction of 2-(3,4-dimethoxybenzylidene)hydrazine-1-carbothioamide (1) with hydrazonoyl halides under base-catalyzed conditions. The reactions proceed through nucleophilic substitution
Externí odkaz:
https://doaj.org/article/16dd12617c19452ea15c24644cbc07d7
Publikováno v:
Green Chemistry Letters and Reviews, Vol 14, Iss 2, Pp 180-189 (2021)
L-Proline organocatalyst was investigated as an efficient and environmentally benign catalyst for synthesis of some novel bioactive benzil bis(2-cyano-3-aryl-2-propenoylhydrazone) derivatives from reaction of the benzil bis(cyanoacetylhydrazone) with
Externí odkaz:
https://doaj.org/article/9d74fd2628124c56ac4697eb2e5b4872
Autor:
Abdelwahed R. Sayed, Sobhi M. Gomha, Fathy M. Abdelrazek, Mohamed S. Farghaly, Shaimaa A. Hassan, Peter Metz
Publikováno v:
BMC Chemistry, Vol 13, Iss 1, Pp 1-13 (2019)
Abstract Pyrazoles, thiazoles and fused thiazoles have been reported to possess many biological activities. 3-Methyl-5-oxo-4-(2-arylhydrazono)-4,5-dihydro-1H-pyrazole-1-carbothioamides 3a,b (obtained from the reaction of ethyl 3-oxo-2-(2-arylhydrazon
Externí odkaz:
https://doaj.org/article/1534488b78d7424f91dd6ef64650e0bd
Autor:
Laila A. Al-Mutabagani, Fathy M. Abdelrazek, Sobhi M. Gomha, Ali S. Hebishy, Mohamed S. Abdelfattah, Safaa M. Hassan, Abdelwahed R. Sayed, Mahmoud M. Elaasser
Publikováno v:
Applied Sciences, Vol 11, Iss 19, p 8908 (2021)
The reaction of 2-(1-(2-(2-(4-methoxybenzylidene)hydrazinyl)-4-methylthiazol-5-yl)ethylidene)hydrazinecarbothioamide with a range of hydrazonoyl chlorides and α-halo-compounds yielded three new series of thiazole derivatives. Chemical and physical t
Externí odkaz:
https://doaj.org/article/bb95084cd5924f768ec912edad8b76b6
Publikováno v:
Molecules, Vol 20, Iss 2, Pp 2591-2610 (2015)
An expedient synthesis of novel triazoles, tetrazine and thiadiazoles, using conveniently accessible and commercially available starting materials has been achieved. The synthesized compounds were characterized by spectroscopic and elemental analyses
Externí odkaz:
https://doaj.org/article/a1fce66f813b497c83ed42401235311f
Publikováno v:
Molecules, Vol 23, Iss 5, p 1133 (2018)
Small heterocyclic compounds containing nitrogen and sulfur atoms, such as thiazole derivatives, represent a significant class of organic azoles that exhibit promising bioactivities and have a great potential in medicinal and agricultural fields. A c
Externí odkaz:
https://doaj.org/article/2712e171352e4ace80b51b9afa012fab
Publikováno v:
Molecules, Vol 22, Iss 2, p 336 (2017)
Synthesis and characterization of new thiadiazoles, bisthiadiazoles from the reaction of mono- and di-hydrazonoyl halides with various hydrazinecarbodithioate derivatives were studied. Treatment of hydrazonoyl halides with 2,5-dihydrazinyl-1,3,4-thia
Externí odkaz:
https://doaj.org/article/f7d32d7d1444460c8ca047824bd9699f
Autor:
Elroby, Shaaban A., Gomha, Sobhi M., Sayed, Abdelwahed R., Zaki, Yasser H., Mohamed, Mahmoud A.
Publikováno v:
In Results in Chemistry July 2024 9