Results 91 to 100 of about 8,057 (210)

Nitrogen‐Doped Graphene Aerogels for Supercapacitors: Advances in Synthesis and Electrochemical Performance

Battery Energy, Volume 5, Issue 2, March 2026.
This review explores nitrogen‐doped graphene aerogel materials used in supercapacitors, analyzing synthesis techniques, performance measures, and recent advancements. It highlights material challenges and limitations while suggesting directions for future research.
Khaled Abdou Ahmed Abdou Elsehsah, Zulkarnain Ahmad Noorden, Norhafezaidi Mat Saman, Noor Azlinda Ahmad, Mohd Faizal Hasan, Sharin Ab Ghani, Ayaz Ahmed   +6 more
wiley   +1 more source

Thiourea-Derived Chelating Ligands and Their Organometallic Compounds: Investigations into Their Anticancer Activity

Molecules, 2020
Thiones have been investigated as ligands in metal complexes with catalytic and biological activity. We report the synthesis, characterization, and biological evaluation of a series of MII/III complexes of the general formulae [MII(cym)(L)Cl]X (cym = η6 ...
Kelvin K. H. Tong, Muhammad Hanif, James H. Lovett, Katja Hummitzsch, Hugh H. Harris, Tilo Söhnel, Stephen M. F. Jamieson, Christian G. Hartinger   +7 more
doaj   +1 more source

Divergent Access to Spirocyclic and Atropisomeric Benzimidazothiazole Derivatives by Halogen‐Promoted Intramolecular Dienamine Sulfenylation

ChemistryEurope, Volume 4, Issue 3, March 2026.
A divergent halogen‐promoted intramolecular sulfenylation of dienamines enables access to two unprecedented families of benzo[4,5]imidazo[2,1‐b]thiazole. The resulting scaffolds feature distinct chiral elements, either a quaternary stereocenter in the case of spirolactones, or a stereogenic axis for heteroaryl‐alkenes, with high configurational ...
Charlou Rognan, Alexandre Gascoin, Delphine Garnier, Romain Pertschi, Nicolas Girard, Mihaela Gulea   +5 more
wiley   +1 more source

Efficient Ce(NO3)3·6H2O-Catalyzed Solvent-Free Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones

Molecules, 2006
Cerium(III) nitrate hexahydrate efficiently catalyzes the three-component Biginelli reaction under solvent-free conditions of an aldehyde, a β-keto ester or β- diketone and urea or thiourea to afford the corresponding 3,4-dihydropyrimidin-2(1H ...
Mohammad Reza Ganjali, Manizheh Mostofi, Khadijeh Ghanbary, Mehdi Adib   +3 more
doaj   +1 more source

A Stepwise [4 + 3] Cycloaddition Reaction of the 1,3-Diphenyl-2-azaallyl Anion [PDF]

, 1993
The 1,3-diphenyl-2-azaallyl anion (1) undergoes [3 + 2] cycloaddition reactions with the s-cis-fixed 1,3-dienes 8-11. In contrast, 1,1,2,2,3,3-hexamethyl-4,5-bis(methylene)cyclopentane (7) reacts with 1 to give the [4 + 3] cycloadduct 13 and the linear 1,
Anh, Baran, Baran, Baran, Baran, Baran, Blomquist, Boche, Boche, Bower, Eidenschink, Fleming, Huisgen, Juday, Kauffmann, Kauffmann, Kaufmann, Mayr, Mayr, Mayr, Mayr, van Straten, Wilcox, Woodward   +23 more
core   +1 more source

Gold–Thiopurine and Thioguanine Platforms for Chemotherapy and Photodynamic Therapy

ChemistryEurope, Volume 4, Issue 3, March 2026.
Gold(I)–thiopurine complexes bearing chromophores and phosphine or N‐heterocyclic carbene ligands were developed as multimodal chemo‐photodynamic agents. They show good stability, moderate lipophilicity, and tunable photoresponse. 6‐TG enhances dark cytotoxicity, 6‐MP improves phototoxicity, and PPh3/NBD provide the most efficient photoactivation ...
Laura Agulló, Juan Carlos Pérez‐Sánchez, María Gil‐Moles, M. Concepción Gimeno   +3 more
wiley   +1 more source

Some New Pyrido[2,3-d ]pyridimines and their Nucleoside of Biological Importance

E-Journal of Chemistry, 2010
Chalcones (I) reacted with malanonitrile and ammonium acetate yielded 2-amino-3-cyano-4,6-disubstituted pyridines (II) in excellent yield. 4-Amino-5,7-disubstituted pyrido [2,3-d]pyrimidine-2(1H)-thiones (III), 4-amino-5,7-disubstituted pyrido[2,3-d ...
Sangeeta Tiwari, Ashok K. Yadav, A. K. Mishra   +2 more
doaj   +1 more source

1,4-disubstituted thiosemicarbazide derivatives are potent inhibitors of toxoplasma gondii proliferation. [PDF]

, 2014
A series of 4-arylthiosemicarbazides substituted at the N1 position with a 5-membered heteroaryl ring was synthesized and evaluated in vitro for T. gondii inhibition proliferation and host cell cytotoxicity.
Dzitko, Katarzyna, Paneth, Agata, Paneth, Piotr, Pawełczyk, Jakub, Plech, Tomasz, Stefańska, Joanna, Stączek, Paweł   +6 more
core   +2 more sources

Variation in herbivore defense strategies among plant species differing in elevational distribution and the role of temperature in defense

New Phytologist, Volume 249, Issue 6, Page 3091-3103, March 2026.
Summary Temperature influences the distribution and performance of both plants and insect herbivores. Consequently, plant–herbivore interactions are likely to vary across thermal gradients, which could affect the evolution of plant defense. Furthermore, temperature fluctuations may elicit immediate changes in defense.
Thomas Dorey, Janisse Deluigi, Alessio Maccagni, Sergio Rasmann, Gaétan Glauser, Yvonne Willi   +5 more
wiley   +1 more source

Rapid method of converting primary amides to nitriles and nitriles to primary amides by ZnC12 using microwaves under different reaction conditions [PDF]

, 2007
A rapid and facile method for the conversion of primary amides to nitriles using inexpensive and readily available ZnCl2 in aqueous acetonitrile and their regeneration using ZnCl2-H2O-THF in the presence of acetamide under microwave irradiation in good ...
Manjula, K., Pasha, M.A.
core   +1 more source