L. K. Dilmukhametova, M. G. Shaibakova, I. R. Ramazanov
{"title":"Cp2TiCl2-Catalyzed silylation of monosubstituted olefins with Me3SiCl and Mg: regioselective synthesis of substituted vinyl- and allylsilanes","authors":"L. K. Dilmukhametova, M. G. Shaibakova, I. R. Ramazanov","doi":"10.1007/s11172-026-5088-x","DOIUrl":"10.1007/s11172-026-5088-x","url":null,"abstract":"<div><p>An efficient one-pot method for the direct synthesis of substituted vinyl- and allylsilanes was developed consisting in silylation of olefins (vinylarenes and alk-1-enes) with Me<sub>3</sub>SiCl in the presence of magnesium (4 equiv.) and Cp<sub>2</sub>TiCl<sub>2</sub> (10 mol.%) in tetrahydrofuran at room temperature. The reaction of vinylarenes (styrene, 4-methylstyrene, 4-<i>tert</i>-butoxy-styrene, 2-vinylnaphthalene) proceeded regioselectively with the formation of the corresponding (<i>E</i>)-2-arylvinylsilanes in 54–95% yields and high stereoselectivity (<i>E</i>: <i>Z</i> > 99: 1). Terminal aliphatic olefins (dec-1-ene, undec-1-ene, oct-1-ene) gave mixtures of <i>E</i>- and <i>Z</i>-isomers of 2-alkenylsilanes in approximately 1: 1 ratios in of 56–66% yields.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 8","pages":"2409 - 2415"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189853","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":"New synthesis of N,N′-bis(3-aminopropyl)butane-1,4-diamine","authors":"M. A. Barabanov, G. S. Martyanov, A. V. Pestov","doi":"10.1007/s11172-026-5094-z","DOIUrl":"10.1007/s11172-026-5094-z","url":null,"abstract":"<div><p>A new method for the synthesis of spermine was developed based on the reaction of phthalic anhydride with propane-1,3-diamine to form a protected form of the diamine, 3,4-dihydropyrimidino[2,1-<i>a</i>]isoindol-6(2<i>H</i>)-one, its alkylation with 1,4-dibromobutane and subsequent hydrolysis to a mixed salt of spermine in 78% total yield. Heating the intermediate quaternary salt in aqueous ethanol caused the hydrolytic tetrahydropyrimidine ring opening to give <i>N</i><sup>1</sup>,<i>N</i><sup>4</sup>-diphthalylspermine dihydrobromide, which was used to isolate <i>N</i><sup>1</sup>,<i>N</i><sup>4</sup>-diphthalylspermine in 82% total yield, a valuable synthon with protected terminal amino groups, difficult to access by other methods. Hydrolysis of <i>N</i><sup>1</sup>,<i>N</i><sup>4</sup>-diphthalylspermine in hydrochloric acid led to spermine tetrahydrochloride in 76% yield. The proposed synthetic method does not require the orthogonal protection of propane-1,3-diamine and large amounts of solvents, it is also environmentally friendly and it allows regeneration of phthalic acid released during the hydrolysis process.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 8","pages":"2462 - 2470"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189848","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":"Sulfamides in catalytic aminomethylation and thiomethylation reactions","authors":"R. R. Khairullina, G. V. Remezova, T. V. Tyumkina","doi":"10.1007/s11172-026-5092-1","DOIUrl":"10.1007/s11172-026-5092-1","url":null,"abstract":"<div><p>A method for the synthesis of 4-[(alkylthio)methyl]-3,4-dihydro-2<i>H</i>-benzo[<i>e</i>][1,2,4]-thiadiazine 1,1-dioxides and 3(4)-<b><i>s[(alkylthio)methyl]amino</i></b>-<i>N</i>-[(alkylthio)methyl]-benzenesulfonamides by the thiomethylation of 2-, 3-, and 4- aminobenzenesulfonamides using linear alkylthiols and paraformaldehyde in the presence of Yb and Sm salts was developed.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 8","pages":"2448 - 2455"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189849","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. Yu. Vasil’kov, P. R. Voloshina, A. V. Naumkin, N. S. Molcheva
{"title":"Hybrid materials based on collagen-chitosan matrices modified by conjugates of silver nanoparticles with quercetin","authors":"A. Yu. Vasil’kov, P. R. Voloshina, A. V. Naumkin, N. S. Molcheva","doi":"10.1007/s11172-026-5082-3","DOIUrl":"10.1007/s11172-026-5082-3","url":null,"abstract":"<div><p>Metal-containing materials promising for wound dressings were obtained using a collagen-chitosan matrix (ColChit), quercetin (Q), and silver nanoparticles (AgNPs) synthesized using an environmentally friendly metal-vapor synthesis (MVS). Hybrid systems were prepared from collagen and chitosan modified with a silver nanoparticle-quercetin conjugate (AgNPs@Q) dissolved in glutamic acid solution, followed by gelation and lyophilization. The composition and electronic state of the metal in the resulting porous ColChitAgNPs@Q sponges were studied using XPS, TEM, and SEM/EDS. It was established that AgNPs are distributed uniformly throughout the bulk of the material and the metal is in the Ag<sup>0</sup> and Ag<sup>+</sup> states.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 8","pages":"2359 - 2366"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189985","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. A. Zhukov, A. A. Lysova, D. G. Samsonenko, D. N. Dybtsev, V. P. Fedin
{"title":"Coordination compounds of ZnII with 4,8-disulfo-2,6-naphthalenedicarboxylate anions and bipyridine ligands","authors":"L. A. Zhukov, A. A. Lysova, D. G. Samsonenko, D. N. Dybtsev, V. P. Fedin","doi":"10.1007/s11172-026-5063-6","DOIUrl":"10.1007/s11172-026-5063-6","url":null,"abstract":"<div><p>The study reports the synthesis of three new Zn<sup>II</sup> coordination compounds of different dimensionality with 4,8-disulfo-2,6-naphthalenedicarboxylic acid (H<sub>4</sub>dsndc) anions and chelating and bridging bipyridine ligands: the molecular complex [{Zn(H<sub>2</sub>O)(2,2′-bpy)<sub>2</sub>}<sub>2</sub>-(dsndc)]•H<sub>2</sub>O (<b>1</b>), the one-dimensional coordination polymer [{Zn(2,2′-bpy)(dmf)}<sub>2</sub>-(dsndc)] (<b>2</b>), and the two-dimensional coordination polymer [Zn<sub>2</sub>(4,4′-bpy)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>(dsndc)] (<b>3</b>) (2,2′-bpy is 2,2′-bipyridine, 4,4′-bpy is 4,4′-bipyridine, dmf is <i>N,N</i>-dimethylformamide). The structures of all compounds were determined by single-crystal X-ray diffraction analysis. A shift from a chelating to bridging coordination mode of the N-donor ligand leads to the natural change in the dimensionality of the coordination compounds. Compound <b>3</b> was obtained as a chemically pure phase and characterized by standard physicochemical methods, including elemental analysis, powder X-ray diffraction, and IR spectroscopy. The thermal properties of compound <b>3</b> were studied by thermogravimetric analysis.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 7","pages":"2152 - 2160"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189675","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. S. Li-Zhulanov, K. P. Volcho, A. A. Shtro, A. M. Klabukov, D. O. Pustylnikova, T. V. Rybalova, N. F. Salakhutdinov
{"title":"Acetamide derivatives of octahydro-2H-chromene based on (–)-isopulegol: synthesis and antiviral activity","authors":"N. S. Li-Zhulanov, K. P. Volcho, A. A. Shtro, A. M. Klabukov, D. O. Pustylnikova, T. V. Rybalova, N. F. Salakhutdinov","doi":"10.1007/s11172-026-5075-2","DOIUrl":"10.1007/s11172-026-5075-2","url":null,"abstract":"<div><p>A new approach was developed to the synthesis of acetamide derivatives of octahydro-2<i>H</i>-chromene based on the monoterpenoid (–)-isopulegol by the three-component Prins—Ritter reaction involving acetonitrile and various acetophenones. The antiviral activity of the synthesized compounds was evaluated against the respiratory syncytial virus, which is the leading cause of acute respiratory infections, particularly in children, older adults, and immunocompromised patients. The thiophene-containing compound exhibits a significant antiviral activity with a selectivity index of 20, making it a promising candidate for further research.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 7","pages":"2269 - 2280"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189676","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. M. Merenkova, N. A. Pelevin, T. N. Kudryavtseva, L. G. Klimova, T. A. Kudryavcev, I. V. Zavarzin, A. V. Tutugin, D. S. Lotorev
{"title":"Synthesis and biological activity of acridone acetic acids with trifluoromethyl substituents","authors":"A. M. Merenkova, N. A. Pelevin, T. N. Kudryavtseva, L. G. Klimova, T. A. Kudryavcev, I. V. Zavarzin, A. V. Tutugin, D. S. Lotorev","doi":"10.1007/s11172-026-5097-9","DOIUrl":"10.1007/s11172-026-5097-9","url":null,"abstract":"<div><p>Acridones containing a trifluoromethyl substituent in various positions of an aromatic ring and 1,3-bis(trifluoromethyl)acridone were synthesized <i>via</i> cyclization of suitable <i>N</i>-(trifluoromethylphenyl)anthranilic and <i>N</i>-[3,5-bis(trifluoromethyl)phenyl]anthranilic acids in polyphosphoric acid. <i>N</i>-Alkylation of 1-(trifluoromethyl)-, 2-(trifluoromethyl)-, 3-(trifluoromethyl)-, and 1,3-bis(trifluoromethyl)acridones with ethyl bromoacetate yielded the corresponding acridone acetates. Hydrolysis of these esters afforded trifluoromethyl-substituted acridone acetic acids and their sodium salts. It was found that the alkylation of 4-(trifluoromethyl)acridone proceeds at the oxygen atom, but not at the nitrogen atom. The obtained compounds were characterized by <sup>1</sup>H and <sup>13</sup>C NMR spectroscopy and high-resolution mass spectrometry. Ethyl 4-(trifluoromethyl)acridin-9-yloxyacetate was characterized by X-ray diffraction. The obtained sodium salts of synthesized trifluoromethyl-substituted acridone acetic acids showed moderate biological activity against the test strains of <i>Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, Staphylococcus aureus, Bacillus subtilis</i>, and <i>Candida albicans</i>. The sodium salt of 1,3-bis(trifluoromethyl)acridoneacetic acid can be considered as a potential antifungal agent.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 8","pages":"2496 - 2505"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189852","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. Tuskaev, S. Ch. Gagieva, K. F. Magomedov, M. D. Evseeva, D. Saracheno, E. K. Golubev, M. I. Buzin, B. M. Bulychev
{"title":"Titanium complexes with OXO-type diolate ligands (X = O, S) as precursors for the synthesis of ultra-high-molecular-weight polyethylene and polyolefin elastomers","authors":"V. A. Tuskaev, S. Ch. Gagieva, K. F. Magomedov, M. D. Evseeva, D. Saracheno, E. K. Golubev, M. I. Buzin, B. M. Bulychev","doi":"10.1007/s11172-026-5087-y","DOIUrl":"10.1007/s11172-026-5087-y","url":null,"abstract":"<div><p>New titanium(<span>iv</span>) chloride and alkoxide complexes with tridentate bianionic OXO<sup>2−</sup>-type (X = O, S) ligands (dibenzothiophene and dibenzofuran derivatives) were synthesized and characterized. The complexes are moderately or highly active in ethylene polymerization in the presence of the binary Al/Mg cocatalysts {Et<sub>2</sub>AlCl + Bu<sub>2</sub>Mg} or {Et<sub>3</sub>Al<sub>2</sub>Cl<sub>3</sub>+Bu<sub>2</sub>Mg}. The synthesized polymers are ultra-high-molecular-weight polyethylenes with molecular weights of (1.7–4.0) · 10<sup>6</sup> g mol<sup>−1</sup> and a broad molecular weight distribution (3.84–7.44). They are appropriate for the solid-state fabrication of high-strength (tensile strength more than 2.8 GPa) and high-modulus (elastic modulus more than 140 GPa) oriented films and tapes. The catalytic system based on [4,6-bis(diphenylmethanolato)dibenzofuran]titanium(IV) dichloride/Et<sub>2</sub>AlCl+Bu<sub>2</sub>Mg is efficient in the synthesis of ethylene-octene copolymers (to 4050 (kg copolymer) (mol Ti)<sup>−1</sup> h<sup>−1</sup>; inclusion of oct-1-ene from 1 to 4 mol.%).</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 8","pages":"2402 - 2408"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189854","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. Novikov, N. N. Balaneva, O. P. Shestak, V. P. Glazunov, A. I. Kalinovsky
{"title":"Synthesis of 1,4-dihydroxyanthraquinones by the reactions of naphthazarins with α-unbranched alkanals","authors":"V. L. Novikov, N. N. Balaneva, O. P. Shestak, V. P. Glazunov, A. I. Kalinovsky","doi":"10.1007/s11172-026-5096-x","DOIUrl":"10.1007/s11172-026-5096-x","url":null,"abstract":"<div><p>Reactions of 5,8-dihydroxy-1,4-naphthoquinones (naphthazarins) with excess of α-unbranched aliphatic aldehydes in refluxing benzene in the presence of sulfonic acids (TsOH or MsOH) for 1.5–2.5 h afforded 5,7-dialkyl-substituted 1,4-dihydroxyanthraquinones in the yields ranging from 33 to 68%. In some cases, the reactions were accompanied with the formation of the side products, 6-substituted anthraquinones.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 8","pages":"2480 - 2495"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189839","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. V. Zolotareva, V. V. Sushev, A. V. Khristolyubova, M. D. Grishin, R. V. Rumyantcev, G. K. Fukin, A. N. Kornev
{"title":"Addition of 3,6-di-tert-butyl-o-benzoquinone to 3a,6a-diaza-1,4-diphosphapentalene","authors":"N. V. Zolotareva, V. V. Sushev, A. V. Khristolyubova, M. D. Grishin, R. V. Rumyantcev, G. K. Fukin, A. N. Kornev","doi":"10.1007/s11172-026-5101-4","DOIUrl":"10.1007/s11172-026-5101-4","url":null,"abstract":"<div><p>3a,6a-Diaza-1,4-diphosphapentalene (DDP) can sequentially add up to four 3,6-di-<i>tert</i>-butyl-<i>o</i>-benzoquinone (BQ) molecules forming the diazo compound (Cat)<sub>2</sub>P—CMe=CMe—N=N—CMe=CMe—P(Cat)<sub>2</sub> (Cat is catecholate) as the final product. The first and second steps involve the addition of BQ to the same phosphorus atom through the cleavage of the N—P covalent bond of the heteropentalene framework. However, the N⋯P interaction is retained in the products and is transformed into a pnictogen bond. The N⋯P distances are 2.340 and 2.015 Å in the primary and secondary addition products of quinone, respectively. The addition of the third quinone molecule was detected only by spectroscopy due to the high reactivity of the intermediate and its subsequent reaction with quinone, which is accompanied by the complete opening of the heteropentalene framework.</p></div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"75 8","pages":"2541 - 2549"},"PeriodicalIF":1.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189968","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}