Results 71 to 80 of about 586 (203)

Synthetic Methods, Chemistry, and the Anticonvulsant Activity of Thiadiazoles

International Journal of Medicinal Chemistry, Volume 2013, Issue 1, 2013., 2013
The chemistry of heterocyclic compounds has been an interesting field of study for a long time. Heterocyclic nucleus 1,3,4‐thiadiazole constitutes an important class of compounds for new drug development. The synthesis of novel thiadiazole derivatives and investigation of their chemical and biological behavior have gained more importance in recent ...
Bhawna Sharma, Amita Verma, Sunil Prajapati, Upendra Kumar Sharma, Hussein El-Subbagh   +4 more
wiley   +1 more source

Regioselective Catalytic Synthesis of Potentially Bioactive 1,3,4-Selenadiazole [PDF]

, 2023
Isoselenocyanates have a crucial role as reactants in chemical processes, facilitating the efficient synthesis of significant chemical intermediates and physiologically active chemicals.
Mahmoud, Mohamed Ali
core   +1 more source

Eco-Friendly Synthesis, Characterization and Biological Evaluation of Some Novel Pyrazolines Containing Thiazole Moiety as Potential Anticancer and Antimicrobial Agents

Molecules, 2018
The one-pot synthesis of a series of pyrazoline derivatives containing the bioactive thiazole ring has been performed through a 1,3-dipolar cycloaddition reaction of N-thiocarbamoylpyrazoline and different hydrazonoyl halides or α-haloketones in the
Mastoura M. Edrees, Sraa Abu- Melha, Amirah M. Saad, Nabila A. Kheder, Sobhi M. Gomha, Zeinab A. Muhammad   +5 more
doaj   +1 more source

Sinteza i protuupalno, analgetsko i ulcerogeno djelovanje derivata tieno[2,3-d]pirimidina [PDF]

, 2007
5-Methyl-6-phenyl-2-thioxothieno[2,3-d]pyrimidone derivative (2) reacted with hydrazonoyl chloride derivatives to afford triazolothienopyrimidones 4a-f.
A. Abdel-Fattah, A. Abdel-Fattah, A. Abdel-Fattah, A. Aly, A. Chowdhury, A. El-Gazzar, A. Ganguly, A. Gewald, A. Hegarty, Abdel-Rahman El-Gazzar, B. Cacciari, B. Roth, C. Petrie, C. Winter, D. Brown, H. Collier, H. Shay, Hend Hafez, Hoda Hussein, J. Miño, M. El-Gaby, M. Nasr, P. Baraldi, P. Wolkoff, R. Goel, S. Sondhi   +25 more
core   +2 more sources

AN EFFICIENT AND SIMPLE SYNTHESIS OF 2, 3-DIHYDRO-1, 3, 4-THIADIAZOLES, PYRAZOLES AND COUMARINS CONTAINING BENZOFURAN MOIETY USING BOTH CONVENTIONAL AND GRINDING METHODS [PDF]

, 2015
Objective: Green chemistry is the approach for synthesizing and using of chemicals that minimize risks to human and to the environments. The aim of this study describes the synthesis of some new thiadiazole, pyrazole and coumarin derivatives bearing ...
Abdelaziem, Anhar
core   +1 more source

Advances in Mechanochemical Methods for One‐Pot Multistep Organic Synthesis

Chemistry – A European Journal, Volume 31, Issue 34, June 17, 2025.
This review highlights recent advances in mechanochemical methods for multistep organic synthesis, focusing on sequential one‐pot approaches performed by grinding or ball milling. The presented transformations are discussed in terms of efficiency, applicability, and sustainability, assessing both the challenges and potential of solvent‐free one‐pot ...
Nina Biedermann, Michael Schnürch
wiley   +1 more source

Recent Applications of Sulfonium Salts in Synthesis and Catalysis

Chemistry – A European Journal, Volume 30, Issue 70, December 13, 2024.
This review summarizes the recent developments on the synthetic applications of sulfonium salts with an emphasis on the description of the operating mechanistic pathways. Abstract The use of sulfonium salts in organic synthesis has experienced a dramatic increase during the last years that can arguably be attributed to three main factors; the ...
Sven Timmann, Zeyu Feng, Manuel Alcarazo
wiley   +1 more source

Synthesis of 5-arylazothiazoles, pyridines and thieno[2,3-b]pyridines derivatives containing 1,2,3-triazole moiety [PDF]

, 2012
1-(2-(4,5-dihydro-3-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl)-5-phenylpyrazol-1-yl)-4-subs-tituted-thiazol-5-yl)-2-phenyldiazene (4) and substituted pyridines (5-12) were synthesized via reaction of 1-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl)-3 ...
Abdel-Riheem, Nadia Abdelhamid, Abdelhamid, Abdou Osman, El-Idreesy, Tamer Tawhid, Rashdan, Huda Refat Mahmoud   +3 more
core   +1 more source

New Routes to Pyridino[2,3-d]pyrimidin-4-one and Pyridino-[2,3-d]triazolino[4,5-a]pyrimidin-5-one Derivatives

Molecules, 2003
2-Thioxopyrimidinyl-5-(N,N-dimethylamino)formamidine (5) and 1,3-diphenyltriazolo[3,4-d]pyrimidinyl-N,N-dimethylformamidine (14) were prepared by condensation of 6-amino-2-thioxo-1,3-dihydropyrimidin-4-one (2) and 7-amino-1,3-diphenyl-1,2,4-triazolo[4,3 ...
Tayseer A. Abdallah, Hamdi M. Hassneen
doaj   +1 more source

HETEROCYCLIC SYNTHESIS USING NITRILIMINES: PART 18. SYNTHESIS OF NEW FUSED HETEROCYCLES CONTAINING TRIAZINONE MOIETY [PDF]

, 2011
A series of new 4,5-dihydro-6-oxo-1,2,4-triazino[4,5-b]1,2,3,4-tetrahydro-β-carbolines were synthesized by the reaction of methyl 1,2,3,4-tetrahydro-β-carboline-3-carboxylate and the appropriate hydrazonoyl halide in presence of triethylamine.
Dalloul, Hany Mahmod
core   +1 more source