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Reusable Metal Bound Polystyrene-Anchored Thiophene-2-carboxaldehyde Catalysts for Efficient Oxidation of Benzyl Alcohol
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120326
S. Kumari, P. K. Gupta, R. K. Rawal, S. Kumar
{"title":"Reusable Metal Bound Polystyrene-Anchored Thiophene-2-carboxaldehyde Catalysts for Efficient Oxidation of Benzyl Alcohol","authors":"S. Kumari,&nbsp;P. K. Gupta,&nbsp;R. K. Rawal,&nbsp;S. Kumar","doi":"10.1134/S1070363224120326","DOIUrl":"10.1134/S1070363224120326","url":null,"abstract":"<p>Cross-linked amino-polystyrene was reacted with thiophene-2-carboxyldehyde followed by the reaction with different metal salts [Cu(II), Mn(II), V(IV), Fe(III) and Ni(II)] to form new heterogeneous polystyrene-anchored catalysts. The structures of the immobilized catalysts were established on the basis of CHNS, DRS, FTIR, AAS, EDX and EPR techniques. The catalytic activity of polystyrene-anchored catalysts was estimated for the oxidation of benzyl alcohol using <i>tert</i>-butyl hydroperoxide and hydrogen peroxide as oxidants. The influence of different reaction parameters like temperature, time, oxidant and the quantity of catalyst on the oxidation were investigated. Under optimized condition, the results show that TBHP as an oxidant provides 90% conversion with the nickel catalyst. The copper catalyst, when used with TBHP, demonstrated the highest selectivity for benzaldehyde, reaching 98%. Under optimal conditions, the catalysts can be reused four times without considerable loss in its activity.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3401 - 3412"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109750","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}
引用次数: 0
Complexes of Cobalt(II) with 2-Methoxy-N-{(1S)-1-phenyl-2-[(prop-2-en(in)-1-yl)oxy]ethyl}aniline and Their Applications
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120193
A. Z. Zalov
{"title":"Complexes of Cobalt(II) with 2-Methoxy-N-{(1S)-1-phenyl-2-[(prop-2-en(in)-1-yl)oxy]ethyl}aniline and Their Applications","authors":"A. Z. Zalov","doi":"10.1134/S1070363224120193","DOIUrl":"10.1134/S1070363224120193","url":null,"abstract":"<p>The reaction of cobalt(II) with two ligands was studied by the extraction-photometric method. (<i>S</i>)-<i>N</i>-[2-(Allyloxy)-1-phenylethyl]-2-methoxyaniline and (<i>S</i>)-2-methoxy-<i>N</i>-[1-phenyl-2-(prop-2-yn-1-yloxy)ethyl]aniline were used as ligands. CoL<sub>2</sub> complexes are electrically neutral. A single extraction with chloroform yielded 98.2–99.5% Co(II). Phase volume ratios of 5 : 5–115 : 5 did not affect the recovery. The yield of CoL<sub>2</sub> was maximum at <i>C</i><sub>L</sub> = 0.008M and did not decompose for 24 hours or more than 30 days after extraction. The optimal acidity was at pH<sub>opt</sub> = 3.3–6.5 (pH<sub>form</sub> = 1.1–8.8). Compliance with the fundamental law of light absorption is achieved at <i>C</i><sub>Co(II)</sub> = 0.16–20 μg/mL. The ratio of components in the complex is 1 : 2, the coordinating ion is Co<sup>2+</sup>. The following do not interfere with the determination of Co(II): Li<sup>+</sup>, Na<sup>+</sup>, K<sup>+</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup>, Ba<sup>2+</sup>, La<sup>3+</sup>, Ce<sup>3+</sup>, Pr<sup>3+</sup>, Nd<sup>3+</sup>, Sm<sup>3+</sup>, Eu<sup>3+</sup>, Gd<sup>3+</sup>, Tb<sup>3+</sup>, Dy<sup>3+</sup>, Ho<sup>3+</sup>, Er<sup>3+</sup>, Tm<sup>3+</sup>, Yb<sup>3+</sup> and Lu<sup>3+</sup>. The developed extraction-photometric method was applied to determine cobalt in wheat, oats and peas.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3288 - 3295"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109599","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}
引用次数: 0
Antibacterial Activity and Mechanism of Action of New Benzylamine-Containing Coumarin Derivatives
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120363
S. Bai, M. Zhang, M. Li, S. Wan, F. Wang, S. Tang, X. Wei, S. Feng, R. Wu
{"title":"Antibacterial Activity and Mechanism of Action of New Benzylamine-Containing Coumarin Derivatives","authors":"S. Bai,&nbsp;M. Zhang,&nbsp;M. Li,&nbsp;S. Wan,&nbsp;F. Wang,&nbsp;S. Tang,&nbsp;X. Wei,&nbsp;S. Feng,&nbsp;R. Wu","doi":"10.1134/S1070363224120363","DOIUrl":"10.1134/S1070363224120363","url":null,"abstract":"<p>A series of novel coumarin derivatives was successfully synthesized by combining the coumarin skeleton with a benzylamine moiety. These derivatives showed better antibacterial activities <i>in vitro</i> tests, especially compound, which was particularly effective. The mechanism of the antibacterial action of compound was thoroughly investigated, and the experimental results revealed that compound was able to increase the permeability of bacterial cell membranes, leading to the disruption of <i>Xoc</i> membranes and effectively inhibiting bacterial growth and reproduction. This finding not only elucidates the antibacterial mechanism of compound, but also provides an important scientific basis for the development of new antibacterial agents in the future.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3436 - 3447"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109651","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}
引用次数: 0
pH-Sensitive Amphiphilic Block Copolymer for Kaempferol Delivery in Controlled Drug Release Therapy for Chronic Obstructive Pulmonary Disease
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120272
Y. Cao, Y.-M. Lu
{"title":"pH-Sensitive Amphiphilic Block Copolymer for Kaempferol Delivery in Controlled Drug Release Therapy for Chronic Obstructive Pulmonary Disease","authors":"Y. Cao,&nbsp;Y.-M. Lu","doi":"10.1134/S1070363224120272","DOIUrl":"10.1134/S1070363224120272","url":null,"abstract":"<p>Chronic obstructive pulmonary disease (COPD) is a common pulmonary disorder with high morbidity, often leading to complications like pulmonary hypertension. Kaempferol, with its antioxidant and anti-inflammatory properties, shows promise in improving COPD outcomes. In this study, we developed a pH-sensitive fluorescent polymer, PAAS-DIA-SDOO, to load 4-(2-methoxyphenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylic acid methyl ester and kaempferol, forming the nanocomposite PAAS-DIA-SDOO@<b>1</b>@Kaempferol. This nanocomposite demonstrated high drug-loading capacity and allowed real-time monitoring of drug release. In COPD model cells, it significantly enhanced cell proliferation and reduced inflammation, highlighting its potential as a smart drug delivery system for targeted COPD treatment. This innovation offers promising therapeutic improvements by enhancing drug efficacy and reducing side effects.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3363 - 3371"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109745","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}
引用次数: 0
Identification and Synthesis of a New L-Carnitine Impurity
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120351
X. Wang, S. Yan, X. Qiu, J. Hou, Z. Chen
{"title":"Identification and Synthesis of a New L-Carnitine Impurity","authors":"X. Wang,&nbsp;S. Yan,&nbsp;X. Qiu,&nbsp;J. Hou,&nbsp;Z. Chen","doi":"10.1134/S1070363224120351","DOIUrl":"10.1134/S1070363224120351","url":null,"abstract":"<p>L-Carnitine is an endogenous substance essential for energy metabolism in mammals and a drug for the treatment of cardiovascular and neurological diseases. In this study, we reported and characterized a new impurity of L-carnitine (3-ethoxy-4-trimethylammonium 2-butenoate). The compound was synthesized from ethyl 4-chloroacetoacetate by a three-step reaction. It can be used as the impurity reference for the quality study and control of L-carnitine.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3431 - 3435"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109751","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}
引用次数: 0
Base-Free Fluoride-Mediated Vinylation of Alcohols with Calcium Carbide
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120041
V. V. Voronin, M. S. Ledovskaya
{"title":"Base-Free Fluoride-Mediated Vinylation of Alcohols with Calcium Carbide","authors":"V. V. Voronin,&nbsp;M. S. Ledovskaya","doi":"10.1134/S1070363224120041","DOIUrl":"10.1134/S1070363224120041","url":null,"abstract":"<p>Here, we demonstrate that the reaction between calcium carbide and aliphatic and benzyl alcohols does not require an additional base as a catalyst and can be effectively promoted by readily available potassium fluoride. Potassium fluoride acts as a phase-transferring reagent, activating the calcium hydroxide base released from the reaction of calcium carbide with water. Given this insight, we have developed a novel synthetic pathway for the construction of alkyl vinyl ethers.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3155 - 3163"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109413","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}
引用次数: 0
Synthesis of Quinine Ester of Naproxen and Study of Its Photophysical Properties
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120156
I. N. Egorov, M. I. Valieva, D. S. Kopchuk, I. S. Kovalev, G. V. Zyryanov
{"title":"Synthesis of Quinine Ester of Naproxen and Study of Its Photophysical Properties","authors":"I. N. Egorov,&nbsp;M. I. Valieva,&nbsp;D. S. Kopchuk,&nbsp;I. S. Kovalev,&nbsp;G. V. Zyryanov","doi":"10.1134/S1070363224120156","DOIUrl":"10.1134/S1070363224120156","url":null,"abstract":"<p>Quinine Ester of Naproxen was obtained for the first time by O-acylation of quinine with naproxen [(<i>S</i>)-6-methoxy-α-methyl-2-naphthaleneacetic acid] chloride under alkaline conditions. The structure of the product was proved by <sup>1</sup>H NMR. The photophysical properties of the resulting compound were studied, an intense fluorescent response to picric acid with a Stern–Volmer constant <i>K</i><sub>sv</sub> ≈ 1×10<sup>6</sup> M<sup>–1</sup> was shown.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3249 - 3251"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109556","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}
引用次数: 0
Regularities of Oxidation Reactions of Sulfolanopyrazolidines and Sulfolanoisoxazolidines with Bromine
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120284
I. E. Efremova, O. Yu. Ozerova, A. V. Serebryannikova, D. R. Gerasimov, M. V. Tsaplinskaya
{"title":"Regularities of Oxidation Reactions of Sulfolanopyrazolidines and Sulfolanoisoxazolidines with Bromine","authors":"I. E. Efremova,&nbsp;O. Yu. Ozerova,&nbsp;A. V. Serebryannikova,&nbsp;D. R. Gerasimov,&nbsp;M. V. Tsaplinskaya","doi":"10.1134/S1070363224120284","DOIUrl":"10.1134/S1070363224120284","url":null,"abstract":"<p>It has been established that the bromine action on bicyclic derivatives of nitrosulfolane with pyrazolidine and isoxazolidine rings under mild conditions leads to the oxidation of the nitrogen-containing heterocycle with the formation of isomeric sulfolanopyrazolines and sulfolanoisoxazolines. The structure of the obtained compounds was established by IR, <sup>1</sup>H NMR, <sup>13</sup>C{<sup>1</sup>H}, <sup>1</sup>H–<sup>13</sup>C HMQC, <sup>1</sup>H–<sup>13</sup>C HMBC, <sup>1</sup>H–<sup>1</sup>H NOESY spectroscopy.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3372 - 3377"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109780","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}
引用次数: 0
Novel C,N-Donor Analogs of Nitrone and Pd/NHC Complexes Based Thereon
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120181
A. Yu. Chernenko, M. A. Shevchenko, M. E. Minyaev, V. M. Chernyshev
{"title":"Novel C,N-Donor Analogs of Nitrone and Pd/NHC Complexes Based Thereon","authors":"A. Yu. Chernenko,&nbsp;M. A. Shevchenko,&nbsp;M. E. Minyaev,&nbsp;V. M. Chernyshev","doi":"10.1134/S1070363224120181","DOIUrl":"10.1134/S1070363224120181","url":null,"abstract":"<p>Novel 1,2,4-triazolium salts, 4-aryl-3-arylamino-1-(pyridin-2-yl)-1,2,4-triazolium bromides, were synthesized. These triazolium salts can be used as precursors of base-ionizable N-heterocyclic carbene (NHC) ligands capable of deprotonating the NH-acidic arylamino group. New Pd/NHC complexes, in which NHC acts as a bidentate C,N-donor chelating ligand, were prepared by metallation of the synthesized triazolium salts with palladium acetate. It was found that the obtained complexes have enhanced stability in strongly basic media and may be of interest as potential catalysts for cross-coupling reactions.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3277 - 3287"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109596","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}
引用次数: 0
Calculation of 13C NMR Shifts of Atoms Directly Bound to Platinum
IF 0.9 4区 化学
Russian Journal of General Chemistry Pub Date : 2025-01-27 DOI: 10.1134/S1070363224120211
S. A. Kondrashova, Sh. K. Latypov
{"title":"Calculation of 13C NMR Shifts of Atoms Directly Bound to Platinum","authors":"S. A. Kondrashova,&nbsp;Sh. K. Latypov","doi":"10.1134/S1070363224120211","DOIUrl":"10.1134/S1070363224120211","url":null,"abstract":"<p>A calculation method has been proposed for estimating the <sup>13</sup>C NMR chemical shifts of atoms directly bound to platinum. The practically significant accuracy can only be obtained by calculating the shielding within the framework of a fully relativistic formalism (mDKS). “Economical” locally dense basis sets can be used to calculate the shielding. The PBE0/{6-31+G(d); Pt(SDD)} level is sufficient for the geometry optimization. Considering that the <sup>13</sup>C NMR chemical shift of such atoms strongly depends on the features of the electronic structure, the proposed approach may open new possibilities in the analysis of platinum complexes.</p>","PeriodicalId":761,"journal":{"name":"Russian Journal of General Chemistry","volume":"94 12","pages":"3303 - 3312"},"PeriodicalIF":0.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109598","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}
引用次数: 0
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