Results 81 to 90 of about 154,533 (239)

Cross Linking and Degradation Mechanisms in Model Sealant Candidates [PDF]

Model compounds were investigated as to which type of heterocyclic ring is the most advantageous for curing sealants based on perfluoroalkylether chains. The relative thermal, thermal oxidative, hydrolytic, and fuel stability of potential crosslinks were
Ito, T. I., Kaufman, J., Kratzer, R. H., Nakahara, J. H., Paciorek, K. L.   +4 more
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Magnetic BiFeO3 nanoparticles: a robust and efficient nanocatalyst for the green one-pot three-component synthesis of highly substituted 3,4-dihydropyrimidine-2(1H)-one/thione derivatives

Scientific Reports
In this research, magnetic bismuth ferrite nanoparticles (BFO MNPs) were prepared through a convenient method and characterized. The structure and morphological characteristics of the prepared nanomaterial were confirmed through analyses using Fourier ...
Safa Hanifi, Mohammad G. Dekamin, Mohammad Eslami   +2 more
doaj   +1 more source

Crystal structure of (E)-1-(2,4-dinitrophenyl)-2-[(E)-5-phenyl-1-(p-tolyl)pent-2-en-4-yn-1-ylidene]hydrazine

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C24H18N4O4, the plane of the phenyl ring is inclined to those of the toluene ring and the dinitro-substituted benzene ring by 66.96 (19) and 47.06 (18)°, respectively, while the planes of the two benzene rings are inclined to one ...
Alexander A. Golovanov, Anna V. Vologzhanina, Evgeniya D. Voronova, Vadim V. Bekin, Sergey V. Naumov   +4 more
doaj   +1 more source

Sustainable synthesis of antibacterial 3-aryl-2H-benzo[b,1,4]oxazin-2-ones via SNAr Csp2–Csp2 coupling

Frontiers in Chemistry
IntroductionThe increasing prevalence of antibiotic-resistant pathogens necessitates the urgent development of new antibacterial agents. Concurrently, synthetic chemistry is moving towards more sustainable practices that minimize environmental impact ...
Fatemeh Salehzadeh, Maryam Esmkhani, Milad Noori, Shahrzad Javanshir, Aida Iraji, Aida Iraji, Mohammad Mahdavi   +6 more
doaj   +1 more source

Magnetic decorated 5-sulfosalicylic acid grafted to chitosan: A solid acid organocatalyst for green synthesis of quinazoline derivatives

Carbohydrate Polymer Technologies and Applications
In this research, a new magnetically decorated multifunctional solid acid was designed and prepared conveniently by grafting of 5-sulfosalicylic acid (SSA) onto the chitosan (CS) backbone using toluene-2,4-diisocyanate (TDI) linker for the first time ...
Reyhaneh Peyvasteh Sourkouhi, Mohammad G. Dekamin, Ehsan Valiey, Mohammad Dohendou   +3 more
doaj  

An Efficient Selectfluor-Mediated Oxidative Thio- and Selenocyanation of Diversely Substituted Indoles and Carbazoles

Heteroatom Chemistry, 2019
A facile Selectfluor-mediated oxidative method for direct introduction of SCN and SeCN groups into diversely substituted indoles and carbazoles is described, by employing readily available thiocyanate and selenocyanate salts, and the scope of the method ...
Rodrigo Abonia, Luisa F. Gutierrez, Angela T. Zwarycz, Sebastián Correa Smits, Kenneth K. Laali   +4 more
doaj   +1 more source

Pyrrolizine- and Indolizine-Derived Spirooxindoles: Synthesis, Antibacterial Activity and Inverse Docking Analysis

Chemistry
Spirooxindoles are a family of heterocyclic compounds which bear the oxindole nucleus in their structures, which have a considerable pharmaceutical potential and which have been linked to various drugs for the treatment of diverse diseases. In this work,
Pablo Romo, María del Pilar Crespo, Mauricio Barreto, María Elena Burbano, Melissa Mejia-Gutierrez, Jairo Quiroga, Rodrigo Abonia   +6 more
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XVIII.—Formation of heterocyclic compounds. Part II. Action of bases on the αα′-dibromo-derivatives of certain dicarboxylic acids [PDF]

, 1910
Henry Rondel Le Sueur, Paul Haas
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Dirhenium Carbonyl Complexes Bearing 2-Vinylpyridine, Morpholine and 1-Methylimidazole Ligands [PDF]

, 2008
Treatment of the labile compound [Re2(CO)8(MeCN)2] with 2-vinylpyridine in refluxing benzene affords exclusively the new compound [Re2(CO)8(μ-η1:η2-NC5H4CHCH2)] (1) in 39% yield in which the μ-η1:η2-vinylpyridine ligand is coordinated to one Re atom ...
Ahmed, Faruque, Bennett, Dennis W., Das, Anamika, Hassan, Mohammad R., Haworth, Daniel T., Kabir, Shariff E., Lindeman, Sergey V., Siddiquee, Tasneem   +7 more
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Plant enzyme reactions leading to the formation of heterocyclic compounds. 1. The formation of unsaturated pyrrolidine and piperidine compounds [PDF]

, 1955
P. J. Mann, W. R. Smithies
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