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Catalytic Benzoylation of Alanine in Two-Phase Water–Dichloromethane System 两相水-二氯甲烷体系中丙氨酸的催化苯甲酰化反应
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-05-19 DOI: 10.1007/s11237-023-09763-8
V. M. Anishchenko, A. M. Redko, O. M. Dykun, V. I. Rybachenko
{"title":"Catalytic Benzoylation of Alanine in Two-Phase Water–Dichloromethane System","authors":"V. M. Anishchenko,&nbsp;A. M. Redko,&nbsp;O. M. Dykun,&nbsp;V. I. Rybachenko","doi":"10.1007/s11237-023-09763-8","DOIUrl":"10.1007/s11237-023-09763-8","url":null,"abstract":"<div><div><p>The inverse phase transfer process of catalytic benzoylation of α-amino acids (on the example of alanine) in a two-phase water–dichloromethane system in the presence of pyridine derivatives as catalysts is investigated. The effect of the initial concentration of alanine, its form in solution, and the initial catalyst concentration on the reaction rate and the composition of the products is studied. It is established that using 4-methyl- and 4-methoxy pyridine N-oxides combined with a double excess of the sodium salt of alanine makes it possible to obtain 2-benzamidopropionic acid with a yield of more than 80%.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 1","pages":"38 - 41"},"PeriodicalIF":1.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4763177","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
Selectivity of Tryptophan and Phenylalanine Adsorption by Activated Coconut Carbon of Medical Assignment 医用活性炭吸附色氨酸和苯丙氨酸的选择性研究
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-05-19 DOI: 10.1007/s11237-023-09766-5
I. A. Farbun, V. A. Trykhlib
{"title":"Selectivity of Tryptophan and Phenylalanine Adsorption by Activated Coconut Carbon of Medical Assignment","authors":"I. A. Farbun,&nbsp;V. A. Trykhlib","doi":"10.1007/s11237-023-09766-5","DOIUrl":"10.1007/s11237-023-09766-5","url":null,"abstract":"<div><div><p>The adsorption capacity of carbon adsorbent KARBON™ for tryptophan and phenylalanine from the individual solutions, their mixtures, and in the presence of leucine, isoleucine, and valine has been studied. It is established that, at the adsorption from the mixture of these amino acids, the overall removal of tryptophan and phenylalanine is an order of magnitude exceeding the removal of aliphatic analogues. Maximum removals (&gt;90%) of tryptophan and phenylalanine are achieved at concentrations of 2.0-2.8 mmol/L, as the concentrations increase to 20-24 mmol/L, the efficiency of the removal of these amino acids is decreased approximately twice. The obtained data show that the enterofraction of the adsorbent KARBON™ can be used as an alternative to amino acid therapy for various diseases.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 1","pages":"59 - 65"},"PeriodicalIF":1.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4762822","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: 1
Spectral and Luminescence Properties of Mixed-Ligand Eu3+ and Tb3+ Complexes with tris(3-[2′-pyridyl]-pyrazolyl)borate and Carboxylates Containing an N-Salicylideneimine Fragment 三(3-[2 ' -吡啶基]-吡唑基)硼酸盐和含有n -水杨基亚胺片段的羧酸盐混合配体Eu3+和Tb3+配合物的光谱和发光性质
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-04-04 DOI: 10.1007/s11237-023-09756-7
E. A. Mikhalyova, K. V. Borysova, E. A. Goreshnik, A. W. Addison
{"title":"Spectral and Luminescence Properties of Mixed-Ligand Eu3+ and Tb3+ Complexes with tris(3-[2′-pyridyl]-pyrazolyl)borate and Carboxylates Containing an N-Salicylideneimine Fragment","authors":"E. A. Mikhalyova,&nbsp;K. V. Borysova,&nbsp;E. A. Goreshnik,&nbsp;A. W. Addison","doi":"10.1007/s11237-023-09756-7","DOIUrl":"10.1007/s11237-023-09756-7","url":null,"abstract":"<div><div><p>It has been shown by single crystal X-ray diffraction analysis that the salicylideneimine fragment of Tp<sup>Py</sup>Ln(sch)<sub>2</sub>(H<sub>2</sub>O) (Ln = Eu, Tb; Tp<sup>Py–</sup> = tris(3-[2′-pyridyl]pyrazolyl)borate; schH = p-schH, m-schH are carboxylate Schiff bases prepared by the reaction of 4- and 3-aminobenzoic acids, respectively, with salicylaldehyde) is not coordinated to the metal ion. The obtained Tb<sup>3+</sup> complexes exhibit ligand-centered emission, while in the luminescence spectra of Eu<sup>3+</sup> compounds narrow bands of characteristic emission of Eu<sup>3+</sup> are also observed. It is found that when the complexes are irradiated with UV light, the transformations of carboxylate ligands in the coordination compounds occur.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"409 - 416"},"PeriodicalIF":1.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4148084","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
Structure and Photosensitaizer Ability of Polymethine Dyes in Photodynamic Therapy: A Review 聚甲基染料在光动力治疗中的结构及光敏性研究进展
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-04-04 DOI: 10.1007/s11237-023-09754-9
A. A. Ishchenko, A. T. Syniugina
{"title":"Structure and Photosensitaizer Ability of Polymethine Dyes in Photodynamic Therapy: A Review","authors":"A. A. Ishchenko,&nbsp;A. T. Syniugina","doi":"10.1007/s11237-023-09754-9","DOIUrl":"10.1007/s11237-023-09754-9","url":null,"abstract":"<div><div><p>Different approaches to the development of promising photosensitizers based on polymethine dyes (PD) for photodynamic therapy are systematized, summarized, and analyzed. PD of the near-IR spectral range has drawn special attention. The influence of a heavy atom (chalcogens, halogens, and noble metals), the chromophore interaction, electron transfer, and free radicals on the singlet oxygen generation by PD is discussed. The PD photodynamic activity mechanisms under hypoxia conditions are considered. The PD structural modifications that ensure their targeted delivery to cancer cells are analyzed.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"373 - 401"},"PeriodicalIF":1.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4149863","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: 7
Catalytic Properties of Nickel-Containing Hierarchical Zeolites in the Reaction of n-Hexane Hydroizomerization 含镍分级沸石在正己烷氢异构化反应中的催化性能
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-04-01 DOI: 10.1007/s11237-023-09758-5
M. M. Kurmach, K. M. Konysheva, O. P. Pertko, P. S. Yaremov, Yu. G. Voloshyna, O. V. Shvets
{"title":"Catalytic Properties of Nickel-Containing Hierarchical Zeolites in the Reaction of n-Hexane Hydroizomerization","authors":"M. M. Kurmach,&nbsp;K. M. Konysheva,&nbsp;O. P. Pertko,&nbsp;P. S. Yaremov,&nbsp;Yu. G. Voloshyna,&nbsp;O. V. Shvets","doi":"10.1007/s11237-023-09758-5","DOIUrl":"10.1007/s11237-023-09758-5","url":null,"abstract":"<div><div><p>It is shown that H-forms of hierarchical aluminosilicate zeolites MOR, BEA, and MFI exhibit catalytic activity in the process of cracking <i>n</i>-hexane, while the introduction of nickel nanoparticles with an average size in the range of 2.3-5.5 nm changes the reaction direction towards isomerization. This opens up the prospects in creating catalysts based on Ni-containing zeolites for the reaction of the hydroisomerization of linear hydrocarbons.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"427 - 434"},"PeriodicalIF":1.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4001615","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: 2
Influence of the Structure of Nanocomposites Based on Co,N,S-Doped Carbon and Co9S8 on the Catalytic Properties in the Processes of Quinoline and Its Methyl Derivatives Hydrogenation Co、N、s掺杂碳和Co9S8纳米复合材料结构对喹啉及其甲基衍生物加氢催化性能的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-04-01 DOI: 10.1007/s11237-023-09757-6
O. O. Pariiska, D. O. Mazur, V. M. Asaula, V. V. Buryanov, R. Socha, Ya.I. Kurys, S. V. Kolotilov, V. G. Koshechko, V. D. Pokhodenko
{"title":"Influence of the Structure of Nanocomposites Based on Co,N,S-Doped Carbon and Co9S8 on the Catalytic Properties in the Processes of Quinoline and Its Methyl Derivatives Hydrogenation","authors":"O. O. Pariiska,&nbsp;D. O. Mazur,&nbsp;V. M. Asaula,&nbsp;V. V. Buryanov,&nbsp;R. Socha,&nbsp;Ya.I. Kurys,&nbsp;S. V. Kolotilov,&nbsp;V. G. Koshechko,&nbsp;V. D. Pokhodenko","doi":"10.1007/s11237-023-09757-6","DOIUrl":"10.1007/s11237-023-09757-6","url":null,"abstract":"<div><div><p>It has been found that composites based on Co,N,S-doped carbon and Co<sub>9</sub>S<sub>8</sub> can act as catalysts for the hydrogenation of quinoline and its monomethyl derivatives providing the formation of 1,2,3,4-tetrahydroquinolines with 75-99% yields. The high efficiency of these systems is caused first of all with the presence of Co-N<sub><i>x</i></sub> sites in their composition, which are formed as a result of the pyrolysis of cobalt salts and poly-5-aminoindole. The use of highly dispersed Vulcan XC72R carbon black as a component of the reaction mixture during the composite catalyst preparation by the pyrolysis contributes to a greater extent to the formation of active Co-N<sub><i>x</i></sub> sites in them, compared to graphene oxide or in the case when a carbon component is not added.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"417 - 426"},"PeriodicalIF":1.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4001874","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: 2
Effect of CsPbBr3 Content in Mechanochemically Obtained CsPbBr3/h-BN Nanocomposites on Their Photoluminescent Characteristics 机械化学制备的CsPbBr3/h-BN纳米复合材料中CsPbBr3含量对其光致发光特性的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-03-31 DOI: 10.1007/s11237-023-09755-8
N. V. Konoshchuk, O. P. Rozovik, V. G. Koshechko, V. D. Pokhodenko
{"title":"Effect of CsPbBr3 Content in Mechanochemically Obtained CsPbBr3/h-BN Nanocomposites on Their Photoluminescent Characteristics","authors":"N. V. Konoshchuk,&nbsp;O. P. Rozovik,&nbsp;V. G. Koshechko,&nbsp;V. D. Pokhodenko","doi":"10.1007/s11237-023-09755-8","DOIUrl":"10.1007/s11237-023-09755-8","url":null,"abstract":"<div><div><p>A number of CsPbBr<sub>3</sub>/h-BN nanocomposites with different contents of inorganic halide perovskite (IHP) nanoparticles, which are characterized by bright photoluminescence (PL) in the green region of the spectrum, were obtained by mechanochemical synthesis. It is shown that the use of a mechanochemical approach leads to a significant delamination of boron nitride (both at the stage of preliminary grinding of h-BN with cesium bromide and in the process of mechanochemical production of nanocomposites), the degree of which decreases in the range of CsBr/h-BN = 1:10 &gt; 1 :50 &gt; 1:100 &gt; 1:250. The increase in the content of boron nitride in the reaction mixture during the mechanochemical synthesis of CsPbBr<sub>3</sub>/h-BN nanocomposite contributes to a reduction of the size of the formed perovskite nanoparticles leading to a significant increase in the PL intensity (<i>I</i><sub>PL</sub>). Optimal content of IHP in the synthesized nanocomposites (~25 wt.%) for obtaining the material with the highest PL intensity has been estimated from the extreme dependence between the <i>I</i><sub>PL</sub> value of CsPbBr<sub>3</sub>/h-BN nanocomposites and their CsPbBr<sub>3</sub> content.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"402 - 408"},"PeriodicalIF":1.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5179040","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
Catalytic Properties and Resource Characteristics of Modified Nickel Composites in the Processes of Oxidative Reforming of C1-C4 Alkanes 改性镍复合材料在C1-C4烷烃氧化重整过程中的催化性能及资源特征
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-02-22 DOI: 10.1007/s11237-023-09751-y
S. M. Orlyk, V. I. Chedryk, S. O. Soloviev, O. D. Vasylyev
{"title":"Catalytic Properties and Resource Characteristics of Modified Nickel Composites in the Processes of Oxidative Reforming of C1-C4 Alkanes","authors":"S. M. Orlyk,&nbsp;V. I. Chedryk,&nbsp;S. O. Soloviev,&nbsp;O. D. Vasylyev","doi":"10.1007/s11237-023-09751-y","DOIUrl":"10.1007/s11237-023-09751-y","url":null,"abstract":"<div><div><p>Modified nickel composites based on stabilized zirconia as prototypes of anode materials of solid oxide fuel cells (SOFC) showed high catalytic activity and stability in the oxidative reforming of alkanes (tri-reforming of methane and steam-(oxygen) reforming of butane). Modification of Ni-10Sc1CeSZ composite with Cu and CeO<sub>2</sub> increases its resistance to carbonization, and doping with platinum or palladium (0.1 wt.%) increases the resistance to H<sub>2</sub>S poisoning. Structured Ni-(CeO<sub>2</sub>, La<sub>2</sub>O<sub>3</sub>)-Al<sub>2</sub>O<sub>3</sub>/cordierite catalysts are characterized by high activity and stability in the oxidative reforming of C<sub>1</sub>-C<sub>3</sub> alkanes into syngas and can be effective in an external processor integrated with SOFC. Bench tests of the fuel cell showed the achievement of acceptable electrical characteristics.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 5","pages":"350 - 362"},"PeriodicalIF":1.0,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4853347","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
Correction to: Influence of Molecular and Electronic Structure of Ln3+ Complexes on the Occurrence of Monoionic Magnetism: A Review 修正:Ln3+配合物的分子和电子结构对单离子磁性发生的影响:综述
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-02-16 DOI: 10.1007/s11237-023-09753-w
A. V. Pavlishchuk, V. V. Pavlishchuk
{"title":"Correction to: Influence of Molecular and Electronic Structure of Ln3+ Complexes on the Occurrence of Monoionic Magnetism: A Review","authors":"A. V. Pavlishchuk,&nbsp;V. V. Pavlishchuk","doi":"10.1007/s11237-023-09753-w","DOIUrl":"10.1007/s11237-023-09753-w","url":null,"abstract":"","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 5","pages":"372 - 372"},"PeriodicalIF":1.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4934486","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
Formation of Silicon Carbide Nanoclusters in the Process of Methyltrichlorosilane Oligomerization 甲基三氯硅烷低聚过程中碳化硅纳米团簇的形成
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-02-15 DOI: 10.1007/s11237-023-09749-6
P. M. Sylenko, A. V. Pokropivny, D. I. Andrushchenko, Yu.M. Solonin
{"title":"Formation of Silicon Carbide Nanoclusters in the Process of Methyltrichlorosilane Oligomerization","authors":"P. M. Sylenko,&nbsp;A. V. Pokropivny,&nbsp;D. I. Andrushchenko,&nbsp;Yu.M. Solonin","doi":"10.1007/s11237-023-09749-6","DOIUrl":"10.1007/s11237-023-09749-6","url":null,"abstract":"<div><div><p>On the basis of quantum-chemical analysis, it has been shown that the formation of silicon carbide nanoclusters can occur due to the chemical reaction between two CH<sub>3</sub>SiCl<sub>3</sub> molecules on the first step of the process with the subsequent reaction between CH<sub>3</sub>SiCl<sub>3</sub> and the formed clusters, rather than due to the homolytic C–Si bond rupture in the CH<sub>3</sub>SiCl<sub>3</sub> molecule. Cases where a chlorine atom of a CH<sub>3</sub>SiCl<sub>3</sub> molecule interacts with one hydrogen atom of another CH<sub>3</sub>SiCl<sub>3</sub> molecule or cluster, and three chlorine atoms of a methyltrichlorosilane molecule form a three-center complex with three hydrogen atoms of a cluster have been considered. It is shown that the second case leads to the formation of SiC nanoparticles.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 5","pages":"336 - 341"},"PeriodicalIF":1.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4604514","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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