O. A. Gasilina, A. A. Shetnev, M. A. Alexeev, M. V. Tarasenko, S. V. Baykov, E. V. Petersen, V. P. Boyarskiy, M. K. Korsakov
{"title":"4H-3,1-Benzoxazin-4-ones Instead of Isatoic Anhydride: Reducing the Activity of the Substrate Allows You to Reduce the Synthesis Time","authors":"O. A. Gasilina, A. A. Shetnev, M. A. Alexeev, M. V. Tarasenko, S. V. Baykov, E. V. Petersen, V. P. Boyarskiy, M. K. Korsakov","doi":"10.1134/S1070363225604466","DOIUrl":"10.1134/S1070363225604466","url":null,"abstract":"<p>A method was developed for one-step preparing 5-(2-acylaminophenyl)-3-aryloxadiazoles by the reaction of amidoximes with benzoxazines, which does not require elevated temperatures and a long reaction time. Using a strong basic medium—a solution of NaOH in DMSO—allows for rapid condensation of the intermediately formed <i>O</i>-acylamidoximes at room temperature. Compared with a similar method for the synthesis of unsubstituted 5-(2-aminophenyl)oxadiazoles based on the isatoic anhydride reaction, the proposed one-step procedure not only makes it possible to obtain acyl derivatives of these amino heterocycles, but also reduces the reaction time 20-fold.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2290 - 2298"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028188","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. Jagadish, A. Anil kumar, D. Anitha Rangasree, Ch. Pradeep kumar, J. Pragathi, Ch. Rakesh, V. Mahipal
{"title":"Investigating Charge Transfer Dynamics: DNA Binding and DFT/PCM Analysis of 4-DMAP and Chloranil Interactions","authors":"T. Jagadish, A. Anil kumar, D. Anitha Rangasree, Ch. Pradeep kumar, J. Pragathi, Ch. Rakesh, V. Mahipal","doi":"10.1134/S1070363225601711","DOIUrl":"10.1134/S1070363225601711","url":null,"abstract":"<p>The DNA binding ability of the organic charge transfer complex formed between 4-dimethylaminopyridine and chloranil in methanol at room temperature was studied using electron absorption spectroscopy, revealing a strong intercalative binding mechanism with an intrinsic binding constant (<i>K</i><sub>b</sub>) of 5.6 × 10<sup>6</sup> M<sup>–1</sup>. This indicates a significant affinity for intercalating between DNA base pairs. The complex, confirmed to have a 1 : 1 stoichiometry through both jobs and photometric methods, demonstrated high stability. Various spectroscopic techniques, including <sup>1</sup>H NMR, FT-IR, P-XRD, and SEM-EDX, supported the charge transfer. Additionally, DFT calculations [CAM-B3LYP/6-31G(d,p)] estimated band gap energy of 2.21 eV, aligning well with experimental findings.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2004 - 2018"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028192","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}
E. A. Gerasimova, D. M. Egorov, D. V. Spiridonova, E. N. Chernova
{"title":"Synthesis of Phosphonylated 5-Aryl-1,3,4-oxadiazoles Based on Dialkyl Chloroethynylphosphonates","authors":"E. A. Gerasimova, D. M. Egorov, D. V. Spiridonova, E. N. Chernova","doi":"10.1134/S1070363225603448","DOIUrl":"10.1134/S1070363225603448","url":null,"abstract":"<p>Hydrazides of some aromatic and alkylaromatic carboxylic acids were obtained. Their reactions with dialkyl chloroethynylphosphonate were studied. It was shown that the reactions proceed chemo- and regioselectively with the formation of the corresponding 1,3,4-oxadiazoles in high yields.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2225 - 2235"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028210","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":"Water Mediated: An Efficient Synthesis of 2-Amino-6-[1,4-dioxo-3,4-dihydrophthalazin-2(1H)-yl]-4-(1H-indol-3-yl)-4H-pyran-3,5-dicarbonitriles","authors":"K. Kalpana","doi":"10.1134/S1070363225601577","DOIUrl":"10.1134/S1070363225601577","url":null,"abstract":"<p>A novel series of 2-amino-6-(1,4-dioxo-3,4-dihydrophthalazin-2(1<i>H</i>)-yl)-4-(1<i>H</i>-indol-3-yl)-4<i>H</i>pyran-3,5-dicarbonitrile derivatives were produced utilizing water as the reaction medium in a one-pot four-component synthesis with phthalic acid, 2-cyanoacetohydrazide, 1<i>H</i>-indole-3-carbaldehydes, and malononitrile. This one-pot four-component reaction offers the amazing advantages of a simple protocol, low environmental impact, rapid reaction periods, and high yields.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"1998 - 2003"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028190","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}
V. A. Burilov, D. D. Radaev, D. A. Duglav, D. R. Islamov, K. S. Usachev, S. E. Solovieva, I. S. Antipin
{"title":"Synthesis and Unusual Reactivity of Dipropargyl Ester Derivatives of Imidazole-4,5-dicarboxylic Acid in Menshutkin and CuAAC Reactions","authors":"V. A. Burilov, D. D. Radaev, D. A. Duglav, D. R. Islamov, K. S. Usachev, S. E. Solovieva, I. S. Antipin","doi":"10.1134/S1070363225603916","DOIUrl":"10.1134/S1070363225603916","url":null,"abstract":"<p>In the present work, a series of propargyl esters based on imidazole-4,5-dicarboxylic acid was obtained for the first time and their reactivity in the Menshutkin reaction was studied. The possibility of further modification of the obtained imidazolium salts under the conditions of the azide-alkyne cycloaddition reaction catalyzed by copper was also studied. Using high-resolution mass spectrometry with electrospray ionization (HRMS ESI), it was found that in the Menshitkin reaction of propargyl esters with alkyl iodides, by-products of the nucleophilic attack of the iodide ion on the <i>N</i>-alkyl fragment are formed, which are not observed when using alkyl tosylates. It was found that when the obtained salts were introduced into the copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction, a side process occurred. The process consisted of a nucleophilic attack of triethylamine on the –OCH<sub>2</sub>– fragments of propargyl carboxylate or triazolemethylene carboxylate, followed by decarboxylation of the resulting carbenobetaine, which was confirmed by the HRMS ESI. It was found that the azide-alkyne cycloaddition in the studied salts can be carried out without side products in the presence of sodium ascorbate as a copper base/stabilizer. For propargyl-containing mono- and bisimidazolium salts, the aggregation characteristics (critical aggregation concentration (CAC) and size of the resulting aggregates) in aqueous media were established. A decrease in CAC and compaction of aggregates were found for more lipophilic tetradecyl derivatives and upon going from mono- to bisimidazolium salts.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2272 - 2282"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028309","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":"Temperature-Driven Structural Transition of Methane Hydrate: Decoding Static Structure Factor Feature Peaks","authors":"Guang Yang","doi":"10.1134/S1070363225603382","DOIUrl":"10.1134/S1070363225603382","url":null,"abstract":"<p>The microstructure of methane hydrates determines their stability, and subtle changes in the microstructure under different conditions can significantly affect the gas release efficiency during the extraction process or cause safety risks. Therefore, it is crucial to explore the microstructural changes at different temperatures for their exploitation and utilization. In this study, the structural changes of type I methane hydrate at different temperatures in the temperature interval of 210–290 K were investigated by molecular dynamics (MD) simulations combined with static structure factor (SSF), radial distribution function (RDF), and Lindemann index. It was found that the water molecules form a stable cage-like structure through an ordered hydrogen bonding network at 210 K. As the temperature rose to 290 K, the structural disorder was markedly enhanced, reflecting the disruption of ordered arrangements and the dominance of disordered molecular interactions. The structural changes of type I methane hydrate at different temperatures were investigated by the SSF, RDF, and Lindemann index. At low temperatures, different SSF peak positions (at <i>q</i> = 10–12.5, 17.5–22.5 and 30–35 nm<sup>–1</sup>, respectively) corresponded to three environments around the central oxygen atom: tetrahedral coordination structure, pentagonal secondary structure, and cage-like host–guest structure, respectively. The present study reveals the correspondence between the structural changes and SSF of methane hydrates at different temperatures, which provides an important theoretical basis for the experimental study of the microstructure of methane hydrates and the development of efficient mining technology.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2200 - 2208"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028326","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}
A. R. Karayeva, M. I. Shatirova, G. M. Mamedova, Sh. K. Sheydayeva
{"title":"Synthesis of 1,3,4-Oxadiazole Derivatives Based on 2-[3-Alkyl-5(morpholinomethyl)-4,5-dihydro-1H-pyrazol-1-yl]-acetohydrazide","authors":"A. R. Karayeva, M. I. Shatirova, G. M. Mamedova, Sh. K. Sheydayeva","doi":"10.1134/S1070363225603412","DOIUrl":"10.1134/S1070363225603412","url":null,"abstract":"<p>An efficient method was developed for the synthesis of fused nitrogen-containing heterocyclic compounds, such as 1,3,4-oxadiazole-substituted pyrazolines based on 3,5-disubstituted pyrazoline acylhydrazide. <i>N</i>′-Acetyl- and <i>N</i>′-chloroacetyl derivatives were obtained by acylation of previously synthesized 2-[3-methyl-5-(morpholinomethyl)pyrazoline]acetohydrazide with acetic and monochloroacetic acids chlorides. Intramolecular cyclization of the synthesized pyrazoline derivatives under the action of phosphorus chloride furnished 1,3,4-oxadiazole-substituted pyrazolines.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2219 - 2224"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028327","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}
K. V. Shcherbakov, K. A. Chernyakov, M. A. Panova, N. A. Gerasimova, N. P. Evstigneeva, A. S. Volobueva, M. A. Niukalova, V. V. Zarubaev, S. S. Borisevich, Ya. V. Burgart, V. I. Saloutin
{"title":"Transformations of 2-(Pentafluorophenyl)-4H-chromen-4-one with Alkylamines into Antimicrobial and Anti-Influenza Agents","authors":"K. V. Shcherbakov, K. A. Chernyakov, M. A. Panova, N. A. Gerasimova, N. P. Evstigneeva, A. S. Volobueva, M. A. Niukalova, V. V. Zarubaev, S. S. Borisevich, Ya. V. Burgart, V. I. Saloutin","doi":"10.1134/S1070363225603497","DOIUrl":"10.1134/S1070363225603497","url":null,"abstract":"<p>The interaction of 2′,3′,4′,5′,6′-pentafluoroflavone with alkylamines was studied, leading to the regioselective formation of nucleophilic aromatic substitution products of the fluorine atom at the activated C4′ center. Evaluation of the biological activity of the synthesized flavones revealed compounds with high antifungal, anti-gonorrheal, and anti-influenza activity. Molecular docking showed that the mechanism of influenza virus strain A/Puerto Rico/8/34 (H1N1) inhibition by the obtained flavones may be associated with neuraminidase blocking.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2236 - 2249"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028328","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}
Y. Guo, W. Ya, S. Cheng, Z. Ni, R. Zhang, Q. Zhang, Y. Luo
{"title":"Photothermal Catalysts for CO2 Hydrogenation to CO (A Review)","authors":"Y. Guo, W. Ya, S. Cheng, Z. Ni, R. Zhang, Q. Zhang, Y. Luo","doi":"10.1134/S1070363225600432","DOIUrl":"10.1134/S1070363225600432","url":null,"abstract":"<p>With the escalating global focus on environmental and energy challenges, the conversion and utilization of CO<sub>2</sub> have emerged as a pivotal research area. Numerous researchers are actively engaged in the conversion of CO<sub>2</sub> to CO, a process that offers both climatic and economic advantages, thereby demonstrating substantial developmental potential. Catalysis utilizing photo-thermal energy has demonstrated the capability to achieve efficient CO<sub>2</sub> conversion at reduced temperatures. Currently, there is a lack of consensus regarding the potential reaction mechanisms linking the structure and performance of catalysts, and review articles in this field are relatively limited. In this paper, we systematically review the design, synthesis, and underlying mechanisms of catalysts utilized in CO<sub>2</sub> photothermal catalytic reactions for the past ten years, providing valuable insights and guidance for the development of highly efficient photothermal catalysts.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"1895 - 1905"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028173","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}
N. I. Belaya, A. V. Belyi, O. M. Zarechnaya, N. V. Mikhaylova, D. V. Nikitenko
{"title":"Reactivity of Decagalloylglucose in Complexation and Radical Oxidation Processes","authors":"N. I. Belaya, A. V. Belyi, O. M. Zarechnaya, N. V. Mikhaylova, D. V. Nikitenko","doi":"10.1134/S1070363225603333","DOIUrl":"10.1134/S1070363225603333","url":null,"abstract":"<p>NMR, FTIR, and differential UV spectroscopy were used to confirm the formation of intermolecular hydrogen-bonded complexes in binary systems of decagalloylglucose (tannic acid) with phenolcarboxylic acids and their derivatives in benzene at 298 ± 2 K. Job’s plots were used to determine a 1 : 2 stoichiometry for the decagalloylglucose–phenolic acid complex. Stability constants obtained by the Benesi–Hildebrand method showed that the equilibrium is shifted toward the formation of associates. Complexation forms the basis of the antiradical synergistic effect of binary tannin–phenolic systems in reactions with the 2,2′-diphenyl-1-picrylhydrazyl radical. Density functional theory calculations showed that the ionization energies of complexes involving methoxylated and hydroxylated acids are lower than those of the corresponding individual components, indicating enhanced reducing and antiradical properties of the complexes compared with the free compounds.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"95 8","pages":"2042 - 2054"},"PeriodicalIF":0.8,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028193","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}