A. Yu. Aksinenko, V. V. Grigoriev, T. V. Goreva, T. A. Epishina, A. V. Gabrelyan, V. P. Fisenko, M. N. Zaharova, S. O. Bachurin
{"title":"Binary ligands of glutamate receptors in a series of cyclic indole derivatives","authors":"A. Yu. Aksinenko, V. V. Grigoriev, T. V. Goreva, T. A. Epishina, A. V. Gabrelyan, V. P. Fisenko, M. N. Zaharova, S. O. Bachurin","doi":"10.1007/s11172-026-4949-7","DOIUrl":"10.1007/s11172-026-4949-7","url":null,"abstract":"<div><p>The synthesis of conjugates of carbazoles and tetrahydro-γ-carbolines with adamantan-1-amines was described and the results of a study of the conjugates interactions with two NMDA receptor sites, namely, the intrachannel and allosteric binding sites, were presented. Conjugates of tetrahydro-γ-carbolines with aminoadamantane derivatives, unlike carbazole conjugates, exhibited the ability to bind to both NMDA receptor sites. Compounds exhibiting ligand properties for these sites in the micromolar concentration range were identified, which indicated their potential as possible neuroprotective agents in the development of pathologies associated with hyperactivation of the glutamatergic system of the central nervous system.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"945 - 951"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738811","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. L. Mamedova, S. V. Mamedova, D. E. Korshin, A. T. Gubaidullin, E. S. Bashirova, E. L. Gavrilova, V. A. Mamedov
{"title":"Synthesis of new 2-aryl-3-hydroxyquinolines","authors":"V. L. Mamedova, S. V. Mamedova, D. E. Korshin, A. T. Gubaidullin, E. S. Bashirova, E. L. Gavrilova, V. A. Mamedov","doi":"10.1007/s11172-026-4937-y","DOIUrl":"10.1007/s11172-026-4937-y","url":null,"abstract":"<div><p>A series of new 2-aryl-3-hydroxyquinolines was synthesized by reductive cyclization of 3-(2-nitroaryl)oxiran-2-yl aryl ketones, which in turn were obtained from o-nitrobenzaldehydes and α-chloroacetophenones under the Darzens condensation conditions. The role of the fluorine atom at position 5 of <i>o</i>-nitrobenzaldehyde in the synthesis of 3-(5-alkoxy-2-nitroaryl)oxiran-2-yl aryl ketones was revealed. The synthesized ketones were converted to 6-alkoxy-2-aryl-3-hydroxyquinolines.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"825 - 832"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738893","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. B. Bordaev, S. A. Durakov, S. S. Moskvichev, O. L. Kaliya, L. G. Bruk, V. R. Flid
{"title":"Comparative analysis of the oxidation of amino aromatic compounds with singlet oxygen","authors":"E. B. Bordaev, S. A. Durakov, S. S. Moskvichev, O. L. Kaliya, L. G. Bruk, V. R. Flid","doi":"10.1007/s11172-026-4950-1","DOIUrl":"10.1007/s11172-026-4950-1","url":null,"abstract":"<div><p>The oxidation of 1-aminoanthracene with singlet oxygen generated <i>via</i> photosensitization using zinc 2,3,9,10,16,17,23,24-octacarboxyphthalocyanine complex affords 4-iminoanthracen-1-one. The product was identified by high-resolution mass spectrometry. The rate of <i>para</i>-oxygenation increases significantly with expansion of the π-conjugated system in the homologous series from aniline to 1-aminoanthracene. The observed dependence is consistent with the electrophilic nature of singlet oxygen.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"952 - 954"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738898","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. Serova, A. V. Lykov, B. N. Mankaev, M. U. Agaeva, K. A. Lyssenko, V. A. Vilman, M. A. Syroeshkin, S. S. Karlov
{"title":"Aminobisthiophenols as ligands effectively stabilizing the low-valence state in tetrylene chemistry","authors":"V. A. Serova, A. V. Lykov, B. N. Mankaev, M. U. Agaeva, K. A. Lyssenko, V. A. Vilman, M. A. Syroeshkin, S. S. Karlov","doi":"10.1007/s11172-026-4944-z","DOIUrl":"10.1007/s11172-026-4944-z","url":null,"abstract":"<div><p>Using the arylthiodeamination of aminobisthiophenols BnN[CH<sub>2</sub>C<sub>6</sub>H<sub>3</sub>(3-R)(2-SH)]<sub>2</sub>, where R = H (<b>1a</b>) or Ph (<b>1b</b>), with Lappert’s tetrylenes M[N(SiMe<sub>3</sub>)<sub>2</sub>]<sub>2</sub> (M = Ge, Sn), four new tetrylenes BnN[CH<sub>2</sub>C<sub>6</sub>H<sub>3</sub>(3-R)(2-S)]<sub>2</sub>M (M = Ge (<b>2a,b</b>), Sn (<b>3a,b</b>); R = H (<b>a</b>), Ph (<b>b</b>)) were synthesized. Compounds <b>2a,b</b> are first representatives of germylenes based on SNS-type ligands. The structures of the new tetrylenes were confirmed by <sup>1</sup>H NMR spectroscopy and elemental analysis. All synthesized tetrylenes are monomeric. The solid-state structure of germylene <b>2a</b> was established by X-ray diffraction. The electronic structures of compounds <b>2b</b> and <b>3a</b> were studied by cyclic voltammetry and UV spectroscopy. It was shown that, unlike non-activated germylenes, which do not undergo the electrochemical reduction, stannylenes are relatively easily reduced in the accessible potential range. The reaction of compound <b>2a</b> with copper(I) iodide affords the complex [Cu(BnN[CH<sub>2</sub>C<sub>6</sub>H<sub>3</sub>(3-R)(2-S)]<sub>2</sub>Ge)<sub>3</sub>I] (<b>4</b>). The structure of complex <b>4</b> was determined by X-ray diffraction. Compound <b>4</b> is the first example of copper(I) complexes containing three tetrylene molecules as ligands.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"899 - 907"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738670","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. Plakhin, Yu. G. Khabarov, V. A. Veshnyakov, D. G. Chukhchin, A. V. Malkov
{"title":"Synthesis of a magnetically active colloidal solution containing silver nanoparticles","authors":"V. A. Plakhin, Yu. G. Khabarov, V. A. Veshnyakov, D. G. Chukhchin, A. V. Malkov","doi":"10.1007/s11172-026-4926-1","DOIUrl":"10.1007/s11172-026-4926-1","url":null,"abstract":"<div><p>A one-stage method for synthesizing a magnetically active colloidal solution containing silver nanoparticles is proposed. The synthesis is based on the partial oxidation of Fe<sup>II</sup> with Ag<sup>+</sup> cations. Lignosulfonates significantly influence the morphology of the resulting particles. The use of lignosulfonates in the synthesis leads to the formation of nanostructured spherical formations composed of plate-like particles. The obtained samples exhibit high catalytic activity in the reduction of <i>o</i>- and <i>p</i>-nitrophenol, 2,4-dinitrophenol, picric acid, methylene blue, and methyl orange. The catalysts can be isolated from the reaction mixture <i>via</i> magnetic separation and reused at least five times.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"716 - 722"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738892","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}
L. S. Atabekyan, V. G. Avakyan, S. N. Dmitrieva, A. I. Vedernikov, L. G. Kuz’mina, S. P. Gromov
{"title":"Structure and photonics of aza-18-crown-6-containing 2-benzothiazole styryl dye and its complexes with metal cations","authors":"L. S. Atabekyan, V. G. Avakyan, S. N. Dmitrieva, A. I. Vedernikov, L. G. Kuz’mina, S. P. Gromov","doi":"10.1007/s11172-026-4940-3","DOIUrl":"10.1007/s11172-026-4940-3","url":null,"abstract":"<div><p>The structure of 2-benzothiazole styryl dyes containing an aza-18-crown-6 ether moiety or a dimethylamino group in the benzene ring was studied by X-ray diffraction. The photonics of the crown-containing dye and its complexes with sodium, calcium, barium, and lead(<span>ii</span>) cations in MeCN was studied by absorption, fluorescence, and laser kinetic spectroscopy. The photoexcitation is accompanied by intersystem crossing of the dye into the triplet state. Quantum chemical calculations for the structures of the dye and its complexes with metal cations in the ground and excited states were carried out. It was found that in the case of dye complexes with barium and lead(<span>ii</span>) cations, photorecoordination processes accompanied by changes in the conformations and absorption spectra of complexes take place.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"855 - 869"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738895","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}
M. A. Golubeva, M. Mukhtarova, S. A. Ziganshina, A. L. Maximov
{"title":"Heterogeneous catalysts for the hydrodeoxygenation of dihydroxybenzenes to phenol","authors":"M. A. Golubeva, M. Mukhtarova, S. A. Ziganshina, A. L. Maximov","doi":"10.1007/s11172-026-4922-5","DOIUrl":"10.1007/s11172-026-4922-5","url":null,"abstract":"<div><p>Such by-products as dihydroxybenzenes, including catechol and hydroquinone, are formed during the hydroxylation of alkylbenzenes to phenol. To increase the yield of the target compound (phenol), there is a need to search for a highly efficient and selective catalyst favoring the partial deoxygenation of the resulting dihydroxybenzenes. Published data on the hydroprocessing of dihydroxybenzenes to phenol using various heterogeneous catalysts were examined. Among the most commonly used catalysts, those based on nickel, molybdenum, ruthenium, and platinum can be distinguished. Although a significant number of the studies reviewed is aimed at producing cyclohexanediols or aromatic hydrocarbons, the formation of phenol among the reaction products allows one to assess the effectiveness of the catalysts studied for phenol production.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"671 - 679"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738627","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}
D. I. Fomenkov, D. D. Karachev, K. V. Skokova, I. A. Yaremenko, S. V. Baranin, A. O. Terent’ev
{"title":"Synthesis of 7-allyl- and 1-homoallyltetraoxabicyclo[2.2.1]heptanes from β-dicarbonyl compounds under heterogeneous conditions","authors":"D. I. Fomenkov, D. D. Karachev, K. V. Skokova, I. A. Yaremenko, S. V. Baranin, A. O. Terent’ev","doi":"10.1007/s11172-026-4934-1","DOIUrl":"10.1007/s11172-026-4934-1","url":null,"abstract":"<div><p>An approach for the synthesis of difficult-to-access bridged 1,2,4,5-tetraoxanes (tetraoxabicyclo[2.2.1]heptanes) from 1,3-dicarbonyl compounds containing allyl and homoallyl substituents under heterogeneous conditions was developed. The use of strongly acidic cationite as a peroxidation catalyst allowed minimization of side processes and preparation of 1,2,4,5-tetraoxane derivatives containing alkenyl substituents at position 1 or 7 in up to 90% yield. The resulting compounds can be used for the synthesis of heterocyclic hybrid structures containing a 1,2,4,5-tetraoxane fragment.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"802 - 808"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738647","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. Alykova, E. M. Sukhareva, A. A. Burko, A. M. Pichugin, V. S. Dyachenko, E. N. Savelev, G. M. Butov, K. R. Popov, L. M. Kustov, I. A. Novakov
{"title":"Studies of the microwave-assisted reaction of carbocyclic ketones with aniline","authors":"E. A. Alykova, E. M. Sukhareva, A. A. Burko, A. M. Pichugin, V. S. Dyachenko, E. N. Savelev, G. M. Butov, K. R. Popov, L. M. Kustov, I. A. Novakov","doi":"10.1007/s11172-026-4935-0","DOIUrl":"10.1007/s11172-026-4935-0","url":null,"abstract":"<div><p>The features of the microwave-assisted reaction of adamantan-2-one and camphor with aniline in the presence of anilinium chloride were studied. Formation of diphenylamine and products of its oxidative couplings was suppressed by performing the reaction under the inert atmosphere with microwave heating. Microwave irradiation accelerates the reaction rate by 1.5–2 times, increases the yield of the target products up to 60–78% and the reaction selectivity up to 99%. Evaluation of the effect of the reaction conditions on the product yield and product compositions indicated that the main products of the microwave-assisted synthesis carried out at a ratio of ketone: anilinium hydrochloride: aniline equal to 1: 0.5: 4 at 100 °C for 1 h are 2-(4-aminophenyl)tricyclo[3.3.1.1<sup>3,7</sup>]decan-2-ol and 2-(4-aminophenyl)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol. 4,4′-(Tricyclo[3.3.1.1<sup>3,7</sup>]-decane-2,2-diyl)dianiline and 4,4′-(1,7,7-trimethylbicyclo[2.2.1]heptane-2,2-diyl)-dianiline were obtained in high yields by the reaction carried out at a molar ratio ketone: anilinium hydrochloride of 1: 2 at 150–180 °C for 12–20 h. Under the microwave synthesis conditions, camphor is less reactive than adamantan-2-one apparently due to the steric hindrance at the keto group.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"809 - 815"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738665","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. A. Zhukova, V. V. Syakaev, D. S. Perevalova, T. N. Beschastnova, O. B. Babaeva, I. Kh. Rizvanov, V. A. Mamedov
{"title":"Synthesis of (E)-3-oxo-3,4-dihydroquinoxaline-2-carbaldoximes from 3-methylquinoxalin-2-ones","authors":"N. A. Zhukova, V. V. Syakaev, D. S. Perevalova, T. N. Beschastnova, O. B. Babaeva, I. Kh. Rizvanov, V. A. Mamedov","doi":"10.1007/s11172-026-4938-x","DOIUrl":"10.1007/s11172-026-4938-x","url":null,"abstract":"<div><p>An effective method for the synthesis of (<i>E</i>)-3-oxo-3,4-dihydroquinoxaline-2-carbaldoximes by the reaction of 3-methylquinoxalin-2-ones with sodium nitrite in DMSO in the presence of sulfuric acid under mild conditions was developed. The <i>E</i>/<i>Z</i> isomerization of the synthesized carbaldoximes in a DMSO-d<sub>6</sub> solution was studied.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 3","pages":"833 - 840"},"PeriodicalIF":1.7,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738671","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}