D. Boufades, S. Hammadou née Mesdour, Z. Adjou, F. Hamidouche
{"title":"Facile Microwave-Assisted Synthesis of Carbon Nanospheres from Urban Wastewater Sludge for Efficient Cr(VI) Adsorption in Tannery Effluent Treatment","authors":"D. Boufades, S. Hammadou née Mesdour, Z. Adjou, F. Hamidouche","doi":"10.1134/S1070363225602078","DOIUrl":"10.1134/S1070363225602078","url":null,"abstract":"<p>This study investigates the adsorption efficiency of carbon nanospheres (CNSs) synthesized from urban wastewater sludge for the removal of Cr(VI) from aqueous solutions. The CNSs were produced via microwave irradiation and characterized using FESEM, TEM, FTIR, Raman, TGA, and XPS analyses. The combined effects of surface oxygen functional groups and porosity significantly enhanced the chromium removal rate. The adsorption process was examined under various operating conditions, including pH, CNS and Cr(VI) concentrations, and contact time. Optimal adsorption efficiency (approximately 99.91%) was achieved with an adsorbent dosage of 700 ppm, a contact time of 50 min, a temperature of 303 K, a pH of 3.5, and a stirring speed of 500 rpm. Adsorption isotherms (Freundlich, Langmuir, and Temkin) and kinetic models (pseudo-first-order and pseudo-second-order) were thoroughly analyzed. Cr(VI) adsorption followed the Langmuir isotherm model with a maximum adsorption capacity of CNSs of 371.7 mg/g, while its kinetics were best described by the pseudo-second-order model. Furthermore, a reusability study demonstrated that CNSs retained approximately 95% of their adsorption efficiency even after multiple cycles, demonstrating their effectiveness as a cost-effective and sustainable adsorbent for Cr(VI) removal.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2055 - 2071"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Dual-State Emission of Thiomorpholine Derivatives of Pyridinedicarbonitrile","authors":"M. A. Shishlikova, A. I. Ershova, O. V. Ershov","doi":"10.1134/S1070363225603874","DOIUrl":"10.1134/S1070363225603874","url":null,"abstract":"<p>A synthetic method for 2-thiomorpholinopyridine-3,4-dicarbonitrile derivatives was developed based on 2-chloropyridine-3,4-dicarbonitriles and thiomorpholine. The obtained compounds exhibit a rare type of dual-state emission (DSE), featuring fluorescence both in solution and in the solid state. The fluorescence maxima in benzene solution depend on the nature of the substituents and range from 470 to 508 nm, while in the solid state, they vary from 473 to 534 nm.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2266 - 2271"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reactions of Furanylalkenes with Bromine in a Methylene Chloride–Aqueous Sodium Acetate System","authors":"L. M. Pevzner, M. L. Petrov, A. V. Stepakov","doi":"10.1134/S1070363225602510","DOIUrl":"10.1134/S1070363225602510","url":null,"abstract":"<p>In this work, 3-(furan-2-yl) acrylates and 1-acyl-2-(furan-2-yl)ethylenes containing a <i>tert</i>-butyl substituent in position 5 of the furan ring, as well as their analogs in which the diethoxyphosphoryl group is located at the same atom of the alkene fragment as the furan fragment, were obtained. Furyl phosphonates containing an adamantan-1-yl substituent in position 5 of the furane ring were also synthesized. All the prepared compounds were studied in the reaction with bromine in the methylene chloride–aqueous sodium acetate system. Furanyl alkenes without phosphorus formed 2-bromo-3-(furan-2-yl) acrylates and 1-acyl-1-bromo-2-(furan-2-yl)ethylenes, respectively. Phosphorylated furanyl acrylates were converted to (2<i>E</i>,5<i>E</i>)-3-(diethoxyphosphoryl)-7-R-4,7-dioxohepta-2,5-dienoates. When treated with hydrazine hydrate in ethanol, they underwent cyclization to 2-substituted 5-(diethoxyphosphoryl)-3a-methyl-4-oxo-3a,4,5,6-tetrahydro-3<i>H</i>-pyrrolo[1,2-<i>b</i>]pyrazole-6-carboxylates, phosphorylated aza-analogues of pyrrolizidine alkaloids. 1-Acyl-2-(furan-2-yl)-2-(diethoxyphosphoryl)ethylenes reacted with bromine to give diethyl [7-R-2,7-dihydroxy-2,9-dimethyl-1,6-dioxaspiro[4,4]nona-3,8-dien-4-yl]phosphonates.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2091 - 2109"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Facile Green Synthesis of Functionalized 2-Methyl-7-(R-phenyl)-5-phenylpyrazolo[1,5-a]pyrimidine Derivatives as Antimicrobial Agents","authors":"S. Sudha Rasmi, G. Mohan, D. Rama Sekhara Reddy","doi":"10.1134/S1070363225600547","DOIUrl":"10.1134/S1070363225600547","url":null,"abstract":"<p>A one-pot synthetic strategy was developed for the synthesis of a series of novel polyfunctionalized 2-methyl-7-aryl-5-phenylpyrazolo[1,5-<i>a</i>]pyrimidine derivatives in good to excellent yields via one pot multicomponent system from 5-methyl-1<i>H</i>-pyrazol-3-amine, various aldehydes and acetone using Al<sub>2</sub>O<sub>3</sub> nanoparticles as catalyst under ambient temperature and solvent-free conditions. Use of Al<sub>2</sub>O<sub>3</sub> nanoparticles as an inexpensive catalyst makes the protocol more economical. Variability of functional groups, solvent-free conditions, short reaction times, easy workup, high yields, inexpensive and recyclability of the catalyst thus providing economic and environmental advantages of the present protocol. All the synthesized compounds were characterized by <sup>1</sup>H, <sup>13</sup>C NMR, MS and elemental analysis. The newly synthesized compounds were tested for their antibacterial and antifungal activities. Most of the synthesized compounds showed promising antibacterial and antifungal activities when compared than that of the standard drugs.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"1972 - 1983"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cation-Activated Halogen Bonding: Experimental and Theoretical Study of The Enhancement of σ-Hole Potential Due to The Group 1 Elements Coordination","authors":"Y. V. Safinskaya, A. V. Kovalenko, M. V. Il’in","doi":"10.1134/S1070363225604259","DOIUrl":"10.1134/S1070363225604259","url":null,"abstract":"<p>This combined experimental and theoretical study examines cation-mediated σ-hole electrostatic potential enhancement in a triethylene glycol derivative functionalized with 2,4,6-tribromophenol ligand system. DFT calculations reveal significant increase of electrostatic potential at bromine sites (up to 352 kJ/mol for Li<sup>+</sup> coordination, representing a 4-fold enhancement over the free ligand’s potential of 87 kJ/mol). <sup>1</sup>H NMR shows weak Na<sup>+</sup> binding (<i>K</i><sup>298</sup> = 1.03<sup>–5</sup> M<sup>–1</sup>) in acetonitrile, highlighting strong solvent competition effects. The observed nonlinear activation trend (Li<sup>+</sup> > K<sup>+</sup> > Na<sup>+</sup>) contrasts with complete absence of the potential enhancement for H<sup>+</sup>, Rb<sup>+</sup> and Cs<sup>+</sup> complexes due to geometric constraints.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2283 - 2289"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Biological Evaluation of Novel 1-(5-Phenyl-1,3,4-oxadiazol-2-yl)methyl-3-(4-phenylthiazol-2-yl)-1,8-naphthyridin-2(1H)-one Derivatives","authors":"K. P. Kasaboina, K. Shireesha, K. S. Jella","doi":"10.1134/S1070363225602418","DOIUrl":"10.1134/S1070363225602418","url":null,"abstract":"<p>A rapid and green synthesis of a novel 1-(5-phenyl-1,3,4-oxadiazol-2-yl)methyl-3-(4-phenylthiazol-2-yl)-1,8-naphthyridin-2(1<i>H</i>)-one derivatives was proposed. The synthesized derivatives were evaluated for the biological evaluation of antibacterial and antifungal activity. All the assessed compounds exhibited promising antimicrobial activity, among all compounds 1-[5-(3-fluorophenyl)-1,3,4-oxadiazol-2-yl]methyl-3-(4-phenylthiazol-2-yl)-1,8-naphthyridin-2(1<i>H</i>)-one showing the strongest MIC values against <i>Staphylococcus aureus, S. epidermidis</i> (23, 23.5 μg/mL), <i>Escherichia coli, P. aeruginosa</i> (22.5, 26.5 μg/mL), <i>Candida albicans</i> (23.5 μg/mL), and <i>Candida metapsilosis</i> (24 μg/mL), <i>Aspergillus terreus</i> (25.5 μg/mL), <i>Aspergillus niger</i> (26 μg/mL), compared with the clinical reference drugs ampicillin and griseofulvin.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2081 - 2090"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. P. Gerasimova, A. M. Saitova, A. N. Nikolaeva, A. A. Zagidullin, S. A. Katsyuba
{"title":"Potential of Hydroxypyrazinecarboxamides in pH and Temperature Sensing","authors":"T. P. Gerasimova, A. M. Saitova, A. N. Nikolaeva, A. A. Zagidullin, S. A. Katsyuba","doi":"10.1134/S107036322560359X","DOIUrl":"10.1134/S107036322560359X","url":null,"abstract":"<p>In this study, the pH- and temperature-dependent absorption and emission properties of T-705 and T-1105 were systematically explored. The results suggest that T-705 holds significant promise as a luminescent sensor capable of detecting acidic environments and enabling measurements within a specific pH range. Meanwhile, T-1105 exhibits spectral features that appear largely insensitive to pH variations under the conditions studied. Both compounds display notable luminescence responses to temperature fluctuations, with sensitivities that compare favorably to those for reported luminescent thermosensing systems. Importantly, the observed stability of T-1105 across diverse pH conditions indicates potential for temperature sensing applications in complex environments. These findings underscore the versatile photophysical behavior of the studied compounds and open perspectives for their further development in multifunctional sensing technologies.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2250 - 2257"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. K. A. Al-Ithawi, K. F. Al-Azawi, A. M. Mohsen, B. S. M. Al-Ghezi, A. D. Sharapov, D. S. Kopchuk, I. S. Kovalev, G. V. Zyryanov
{"title":"Sustainable Approach to 4-Aminoantipyrine Schiff Bases Using a Single Screw Drill Reactor","authors":"W. K. A. Al-Ithawi, K. F. Al-Azawi, A. M. Mohsen, B. S. M. Al-Ghezi, A. D. Sharapov, D. S. Kopchuk, I. S. Kovalev, G. V. Zyryanov","doi":"10.1134/S1070363225602960","DOIUrl":"10.1134/S1070363225602960","url":null,"abstract":"<p>A sustainable approach to synthesis of 4-aminoantipyrine based shiff bases by reaction between 4-aminoantipyrine and aldehydes has been developed by means of a single screw drill (SSD) as an alternative to conventional methods. The advantages of this method are the short time of the reaction, solvent-free conditions, low E-factor and high yield of the obtained products.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2299 - 2302"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yu. R. Aleksandrova, A. A. Munkuev, I. A. Shagina, E. V. Suslov, K. P. Volcho, N. F. Salakhutdinov, M. E. Neganova
{"title":"Synthesis and Chemo-Sensitizing Properties of New Monoterpene-Containing Inhibitors of Histone Deacetylases: Hydroxamic Acids and Mercaptoacetamides","authors":"Yu. R. Aleksandrova, A. A. Munkuev, I. A. Shagina, E. V. Suslov, K. P. Volcho, N. F. Salakhutdinov, M. E. Neganova","doi":"10.1134/S1070363225603813","DOIUrl":"10.1134/S1070363225603813","url":null,"abstract":"<p>A number of histone deacetylase inhibitors (HDACi) containing an adamantane backbone in the CAP group, as well as hydroxamate or mercaptoacetamide functions as zinc-binding fragments connected via a monoterpene linker, were synthesized. It was found that, being HDAC inhibitors, the synthesized compounds significantly enhance the cytotoxic activity of cisplatin against human cervical carcinoma cells HeLa.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"1946 - 1958"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1070363225603813.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. K. Gatiatulin, A. E. Klimovitskii, S. R. Tagirov, M. A. Ziganshin, V. V. Gorbatchuk
{"title":"Hydration Effect on Curcumin Inclusion by Native Cyclodextrins","authors":"A. K. Gatiatulin, A. E. Klimovitskii, S. R. Tagirov, M. A. Ziganshin, V. V. Gorbatchuk","doi":"10.1134/S1070363225603862","DOIUrl":"10.1134/S1070363225603862","url":null,"abstract":"<p>The inclusion compounds of curcumin with hydrated and anhydrous native α-, β- and γ-cyclodextrins were prepared by ball milling. Milling a 2 : 1 mixture of the cyclodextrins and curcumin resulted in the complete inclusion of this guest when using anhydrous cyclodextrins according to the data of TG/DSC analysis, powder X-ray diffraction and FTIR spectroscopy. The hydration of cyclodextrins up to the saturation level gives a slight decrease of the curcumin inclusion extent. The prepared inclusion compound of curcumin and β-cyclodextrin in milled form exhibits a unique exothermic cold crystallization effect. The high thermal stability of the inclusion compound allowed its fusion without decomposition at fast heating rates of 10 000 K/s, and its melting point was determined. This is the first example of such successful experiment for an inclusion compound of native cyclodextrin.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2258 - 2265"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}