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Synthesis of 5,5-Disubstituted N-Methyl-1,3-oxazinanes Containing Monoterpene Fragments 含单萜烯片段的 5,5-二取代 N-甲基-1,3-恶嗪酮的合成
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S001250082360058X
I. V. Nechepurenko, K. P. Volcho,  N. F. Salakhutdinov
{"title":"Synthesis of 5,5-Disubstituted N-Methyl-1,3-oxazinanes Containing Monoterpene Fragments","authors":"I. V. Nechepurenko,&nbsp;K. P. Volcho,&nbsp; N. F. Salakhutdinov","doi":"10.1134/S001250082360058X","DOIUrl":"10.1134/S001250082360058X","url":null,"abstract":"<p>A new method has been developed for the synthesis of 5,5-disubstituted <i>N</i>-methyl-1,3-oxazinanes as a mixture of diastereomers at the 5-position containing monoterpene and branched alkyl substituents in the 5-position. 1,3-Oxazinanes were obtained for the first time by reacting 2,2-substituted 3-aminopropan-1-ols with formaldehyde and sodium borohydride in one stage.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 2","pages":"281 - 287"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057146","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
Stability of Pd/C Catalysts in Solvents for Organic Synthesis Pd/C 催化剂在有机合成溶剂中的稳定性
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823600657
A. S. Galushko, V. V. Ilyushenkova, Yu. V. Burykina, R. R. Shaidullin, E. O. Pentsak
{"title":"Stability of Pd/C Catalysts in Solvents for Organic Synthesis","authors":"A. S. Galushko,&nbsp;V. V. Ilyushenkova,&nbsp;Yu. V. Burykina,&nbsp;R. R. Shaidullin,&nbsp;E. O. Pentsak","doi":"10.1134/S0012500823600657","DOIUrl":"10.1134/S0012500823600657","url":null,"abstract":"<p>The effect of carbon supports and preparation methods of Pd/C catalysts on leaching of palladium-containing species to the solution upon interaction of a catalyst with a solvent was considered. The leaching of palladium from the support surface into pure solvents was studied by high resolution mass spectrometry. It has been shown that the type of leached palladium species formed in the solution depends not only on the solvent, but also on the method of catalyst deposition on the support and the support nature. It has been found that the use of phosphorus-doped carbon (PC) as a support also results in palladium leaching into solution. In addition, the activity of the catalysts supported on graphite and PC decreased to the same degree both in the Suzuki–Miyaura and Mizoroki–Heck reactions.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 2","pages":"292 - 297"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057405","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
Current Trends in the Synthesis of Inorganic and Organoelement Phosphorus- and Sulfur-Containing Polymers. A Review 当前无机和有机元素含磷和含硫聚合物的合成趋势。综述
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823600670
N. P. Tarasova, E. G. Krivoborodov, Ya. O. Mezhuev
{"title":"Current Trends in the Synthesis of Inorganic and Organoelement Phosphorus- and Sulfur-Containing Polymers. A Review","authors":"N. P. Tarasova,&nbsp;E. G. Krivoborodov,&nbsp;Ya. O. Mezhuev","doi":"10.1134/S0012500823600670","DOIUrl":"10.1134/S0012500823600670","url":null,"abstract":"<p>An analysis of literature data on the set of reactions for the production of macromolecules with a high content of phosphorus and sulfur has been carried out, and basic approaches that allow the introduction of these elements into the composition of polymers and polymeric materials have been considered in compliance with the fundamental principles of green chemistry. Methods for synthesis of functional polymers under mild conditions that require minimal energy input from external sources, which can become new growth points for green industrial technologies, are considered. Particular attention focuses on the synthesis of polyphosphazenes and polyphosphoesters for biomedical purposes, as well as on the inverse vulcanization reaction to give polymers used in sorption wastewater treatment, the creation of current sources, and IR optics.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 1","pages":"217 - 231"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0012500823600670.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139056972","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}
引用次数: 0
New Polyfunctional Lubricating Oil Additive Based on a Sulfur-Containing Derivative of 2,6-Dimethylphenol 基于 2,6-二甲基苯酚含硫衍生物的新型多官能团润滑油添加剂
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823600761
E. G. Bordubanova, E. Yu. Oganesova, A. S. Lyadov, O. P. Parenago
{"title":"New Polyfunctional Lubricating Oil Additive Based on a Sulfur-Containing Derivative of 2,6-Dimethylphenol","authors":"E. G. Bordubanova,&nbsp;E. Yu. Oganesova,&nbsp;A. S. Lyadov,&nbsp;O. P. Parenago","doi":"10.1134/S0012500823600761","DOIUrl":"10.1134/S0012500823600761","url":null,"abstract":"<p>New dialkyldithio derivatives of 2,6-dimethylphenol have been synthesized and characterized. The multifunctional properties have been studied for the first time for these compounds as additives to lubricating oils in friction and wear processes under boundary friction conditions, as inhibitors of high-temperature oxidation of hydrocarbons, and as protectors of metal surfaces. It was determined that even a 0.5 wt % concentration of the synthesized additives in lubricating oils contain more than doubles anti-wear properties. It was shown that the additives exhibit a complex antioxidant effect and high efficiency at all stages of the oxidation process, and even at ultralow concentrations (0.005 wt %), their ability to resist oxidation exceeds widely used analogues. The new additives are of significant interest to modern lubricant science and can be used in motor oil formulations and other lubricants.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 2","pages":"267 - 271"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057108","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
Controlled Radical Polymerization of Lauryl Methacrylate in the Synthetic Polyalphaolefin Base Oil 甲基丙烯酸月桂酯在合成聚α烯烃基础油中的受控辐射聚合反应
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823600712
E. V. Chernikova, M. S. Pavlova, A. V. Plutalova, E. A. Litmanovich,  A. L. Maksimov
{"title":"Controlled Radical Polymerization of Lauryl Methacrylate in the Synthetic Polyalphaolefin Base Oil","authors":"E. V. Chernikova,&nbsp;M. S. Pavlova,&nbsp;A. V. Plutalova,&nbsp;E. A. Litmanovich,&nbsp; A. L. Maksimov","doi":"10.1134/S0012500823600712","DOIUrl":"10.1134/S0012500823600712","url":null,"abstract":"<p>Controlled radical polymerization of lauryl methacrylate in polyalphaolefin base oil has been performed for the first time in the presence of 2-cyano-2-propyl dodecyl trithiocarbonate. It has been shown that polymerization proceeds to high monomer conversions and leads to the formation of a polymer with a narrow molecular weight distribution. At the same time, the reaction mixtures retain their transparency after polymerization is completed. The synthesized polymers have a thickening ability, which naturally increases with an increase in their number-average molecular weight.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 1","pages":"249 - 254"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057186","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
Structural Design of Eu2+-Containing Glasses and Glass-Ceramics Based on the BaO–ZrO2–SiO2–MgF2 System for LED Application 基于 BaO-ZrO2-SiO2-MgF2 体系的含 Eu2+ 玻璃和玻璃陶瓷的结构设计，用于 LED 应用
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823700180
S. K. Evstropiev,  V. L. Stolyarova, N. B. Knyazyan, G. G. Manukyan, A. V. Shashkin
{"title":"Structural Design of Eu2+-Containing Glasses and Glass-Ceramics Based on the BaO–ZrO2–SiO2–MgF2 System for LED Application","authors":"S. K. Evstropiev,&nbsp; V. L. Stolyarova,&nbsp;N. B. Knyazyan,&nbsp;G. G. Manukyan,&nbsp;A. V. Shashkin","doi":"10.1134/S0012500823700180","DOIUrl":"10.1134/S0012500823700180","url":null,"abstract":"<p>An approach to designing the structure of Eu<sup>2+</sup>-containing silicate glass-crystalline materials was implemented for the first time, using which a rare-earth activator is introduced into Ba-containing silicates formed during glass crystallization. Eu<sup>2+</sup>-activated fluorine-containing glasses and glass-ceramics in the MgO–BaO–ZrO<sub>2</sub>–SiO<sub>2</sub> system were synthesized, and their crystal structure and luminescence properties were studied. It was shown that the simultaneous incorporation of Eu into several different silicate crystals formed during the crystallization of glasses yields a material with a broad luminescence band in the visible part of the spectrum. A study of the luminescence excitation and emission spectra of glass demonstrated the possibility of excitation energy transfer from Eu<sup>2+</sup> ions to Eu<sup>3+</sup> ions. The approach proposed for the first time to designing the structure of glass-crystalline materials is quite promising for the further creation of new optical media used in high-power light-emitting diodes.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 2","pages":"304 - 308"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057187","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
Phase Formation in the Mg3 – nNinBPO7 System Mg3 - nNinBPO7 系统中的相形成
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823600645
M. N. Smirnova, M. A. Kop’eva, G. D. Nipan, G. E. Nikiforova, A. D. Yapryntsev, A. A. Arkhipenko
{"title":"Phase Formation in the Mg3 – nNinBPO7 System","authors":"M. N. Smirnova,&nbsp;M. A. Kop’eva,&nbsp;G. D. Nipan,&nbsp;G. E. Nikiforova,&nbsp;A. D. Yapryntsev,&nbsp;A. A. Arkhipenko","doi":"10.1134/S0012500823600645","DOIUrl":"10.1134/S0012500823600645","url":null,"abstract":"<p>Mg<sub>3 –</sub> <sub><i>n</i></sub>Ni<sub><i>n</i></sub>BPO<sub>7</sub> samples (<i>n</i> = 0–3) were synthesized by gel combustion followed by annealing at 980°C, cooled under inertial-thermal conditions, and then studied by X-ray powder diffraction analysis, IR spectroscopy, and X-ray fluorescence spectrometry. A crystalline phase of Ni<sub>3</sub>BPO<sub>7</sub> with the β-Zn<sub>3</sub>BPO<sub>7</sub> structure was experimentally obtained for the first time. When varying the composition of the samples from Mg<sub>3</sub>BPO<sub>7</sub> to Ni<sub>3</sub>BPO<sub>7</sub>, in borophosphate, a region of coexistence of α‑Mg<sub>3</sub>BPO<sub>7</sub> and β-Ni<sub>3</sub>BPO<sub>7</sub> was discovered. Analysis of diffuse reflectance spectra of Mg<sub>1.5</sub>Ni<sub>1.5</sub>BPO<sub>7</sub> showed the presence of Ni<sup>2+</sup> cations in an environment different from the symmetrical octahedral or tetrahedral environment.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 2","pages":"298 - 303"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057056","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
New Efficient Approach to the Preparation of (+)-Camphor and (–)-Fenchone Anils under Homogeneous Catalysis Conditions 在均相催化条件下高效制备(+)-樟脑和(-)-葑酮苯胺的新方法
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823600700
A. A. Vernigora, R. V. Brunilin, V. V. Burmistrov, A. V. Davidenko, M. B. Nawrozkij, N. A. Salykin, V. V. Chernyshov,  I. A. Novakov
{"title":"New Efficient Approach to the Preparation of (+)-Camphor and (–)-Fenchone Anils under Homogeneous Catalysis Conditions","authors":"A. A. Vernigora,&nbsp;R. V. Brunilin,&nbsp;V. V. Burmistrov,&nbsp;A. V. Davidenko,&nbsp;M. B. Nawrozkij,&nbsp;N. A. Salykin,&nbsp;V. V. Chernyshov,&nbsp; I. A. Novakov","doi":"10.1134/S0012500823600700","DOIUrl":"10.1134/S0012500823600700","url":null,"abstract":"<p>An efficient approach to the synthesis of (+)-camphor and (–)-fenchone anils has been developed, which involves the reaction of the corresponding bicyclic monoterpenoid ketones with substituted anilines in the presence of in situ prepared (<i>i</i>-PrO)<sub>2</sub>Ti(OTf)<sub>2</sub>·(<i>i</i>-PrOH)<sub>2</sub> complex, as a homogeneous catalyst, and (<i>i-</i>PrO)<sub>4</sub>Ti, as a dehydrating agent. The advantage of the suggested method lies not only in obtaining target products in good yield and high purity, but also in a simplified procedure for their isolation. These products are of interest as potential pharmacologically active compounds, antioxidants for rubber mixtures, and components of 3D-printing formulations.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 1","pages":"260 - 265"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057113","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
Single-Atom Alloy Pd1Ag6/Al2O3 Egg-Shell Catalyst for Selective Acetylene Hydrogenation 用于选择性乙炔加氢的单原子合金 Pd1Ag6/Al2O3 蛋壳催化剂
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823600736
I. S. Mashkovsky, D. P. Melnikov, P. V. Markov, G. N. Baeva, N. S. Smirnova, G. O. Bragina, A. Yu. Stakheev
{"title":"Single-Atom Alloy Pd1Ag6/Al2O3 Egg-Shell Catalyst for Selective Acetylene Hydrogenation","authors":"I. S. Mashkovsky,&nbsp;D. P. Melnikov,&nbsp;P. V. Markov,&nbsp;G. N. Baeva,&nbsp;N. S. Smirnova,&nbsp;G. O. Bragina,&nbsp;A. Yu. Stakheev","doi":"10.1134/S0012500823600736","DOIUrl":"10.1134/S0012500823600736","url":null,"abstract":"<p>Here, we report the synthesis of a single-atom alloy Pd<sub>1</sub>Ag<sub>6</sub>/Al<sub>2</sub>O<sub>3</sub> catalyst with an egg-shell distribution of the active component over the catalyst granules for the selective hydrogenation of acetylene traces in ethylene. The formation of an egg-shell structure has been confirmed by electron probe microanalysis, which demonstrates that metals are predominantly localized at a depth of 130–160 µm from the granule surface. Transmission electron microscopy and X-ray photoelectron spectroscopy have provided evidence of the formation of a PdAg substitutional solid solution with electron density transfer from Ag to Pd. The formation of Pd<sub>1</sub> single sites has been confirmed by IR spectra of adsorbed CO. In the selective hydrogenation of acetylene, the synthesized single-atom alloy Pd<sub>1</sub>Ag<sub>6</sub>/Al<sub>2</sub>O<sub>3</sub> with an egg-shell distribution shows high selectivity, which radically exceeds the selectivity of the palladium counterpart.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 2","pages":"272 - 280"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057147","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
Chiral N-(Octahydro-2H-chromen-4-yl)-2-(dialkylamino)acetamides: Synthesis and Analgesic Activity 手性 N-(八氢-2H-色烯-4-基)-2-(二烷基氨基)乙酰胺：合成与镇痛活性
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2023-12-25 DOI: 10.1134/S0012500823600694
N. S. Li-Zhulanov, K. M. Nikolaichuk, Yu. V. Gatilov, K. P. Volcho, M. V. Khvostov, T. G. Tolstikova,  N. F. Salakhutdinov
{"title":"Chiral N-(Octahydro-2H-chromen-4-yl)-2-(dialkylamino)acetamides: Synthesis and Analgesic Activity","authors":"N. S. Li-Zhulanov,&nbsp;K. M. Nikolaichuk,&nbsp;Yu. V. Gatilov,&nbsp;K. P. Volcho,&nbsp;M. V. Khvostov,&nbsp;T. G. Tolstikova,&nbsp; N. F. Salakhutdinov","doi":"10.1134/S0012500823600694","DOIUrl":"10.1134/S0012500823600694","url":null,"abstract":"<p>A number of new derivatives of octahydro-2<i>H</i>-chromene based on monoterpenoid (–)-isopulegol has been synthesized. The composition and structure of the products have been established using NMR spectroscopy, high-resolution mass spectrometry, and X-ray diffraction analysis. It has been shown that the majority of obtained compounds show high analgesic activity in vivo. (4<i>S</i>)‑Diastereomers of morpholinoacetamide derivatives of octahydro-2<i>H</i>-chromene showed the highest efficiency in both tests (acetic acid-induced writhing test and hot plate test).</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"512 1","pages":"242 - 248"},"PeriodicalIF":0.8,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057106","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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