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Mendeleev Communications最新文献

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4-Phenyldiazenyl-substituted 3,6-di-tert-butylcatechol: synthesis and azo–hydrazone equilibrium 4-苯基二氮基取代的 3,6-二叔丁基邻苯二酚：合成与偶氮腙平衡
IF 1.8 4区 化学
Mendeleev Communications Pub Date : 2024-07-01 DOI: 10.1016/j.mencom.2024.06.038
{"title":"4-Phenyldiazenyl-substituted 3,6-di-tert-butylcatechol: synthesis and azo–hydrazone equilibrium","authors":"","doi":"10.1016/j.mencom.2024.06.038","DOIUrl":"10.1016/j.mencom.2024.06.038","url":null,"abstract":"<div><p>Reaction of 3-hydroxy-2,5-di-<em>tert</em>-butyl-1,4-benzoquinone with phenylhydrazine hydrochloride mainly leads to the corresponding hydrazone at the position 1 existing in tautomeric equilibrium with 3,6-di-<em>tert</em>-butyl-4-(phenyl- diazenyl)catechol. Thermodynamic parameters of the tautomerization were evaluated by NMR spectroscopy. The hydrazone structure was confirmed by XRD study.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963696","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
The homodimer approach to the design of a new long-acting depot prodrug of abiraterone 设计阿比特龙新型长效去势原药的同源二聚体方法
IF 1.8 4区 化学
Mendeleev Communications Pub Date : 2024-07-01 DOI: 10.1016/j.mencom.2024.06.010
{"title":"The homodimer approach to the design of a new long-acting depot prodrug of abiraterone","authors":"","doi":"10.1016/j.mencom.2024.06.010","DOIUrl":"10.1016/j.mencom.2024.06.010","url":null,"abstract":"<div><p>The synthesis of homodimeric bis<em>-</em>esters of abiraterone (an inhibitor of androgens synthesis used for treatment of prostate cancer) as a novel depot form of the drug intended for parenteral administration has been undertaken. The conjugate with succinic linker has been synthesized, while only mono-esters of malic and citric acid were obtained. The target ‘twin’ demonstrated excellent characteristics in preliminary biotests, proving the concept of long-lasting depot-prodrug.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141959884","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
Cyclization of adiponitrile in the reaction with diphenylzirconocene 己二腈与二苯基锆烯的环化反应
IF 1.8 4区 化学
Mendeleev Communications Pub Date : 2024-07-01 DOI: 10.1016/j.mencom.2024.06.026
{"title":"Cyclization of adiponitrile in the reaction with diphenylzirconocene","authors":"","doi":"10.1016/j.mencom.2024.06.026","DOIUrl":"10.1016/j.mencom.2024.06.026","url":null,"abstract":"<div><p>Intramolecular cyclization of adiponitrile with the formation of an amidinate functional group in zirconium coordination sphere was found. The obtained complex can be protolyzed with HCl in dioxane to afford a new representative of amidines, namely, 7-phenyl-1,3,4,5-tetrahydro-2<em>H</em>-azepin-2- imine in hydrochloride form.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141953056","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
NiCo-Gd0.1Ti0.1Zr0.1Ce0.7O2 catalyst for dry reforming and partial oxidation of methane: effect of NiCo applying method on the conversion of methane to synthesis gas 用于甲烷干重整和部分氧化的 NiCo-Gd0.1Ti0.1Zr0.1Ce0.7O2 催化剂：NiCo 应用方法对甲烷转化为合成气的影响
IF 1.8 4区 化学
Mendeleev Communications Pub Date : 2024-07-01 DOI: 10.1016/j.mencom.2024.06.034
{"title":"NiCo-Gd0.1Ti0.1Zr0.1Ce0.7O2 catalyst for dry reforming and partial oxidation of methane: effect of NiCo applying method on the conversion of methane to synthesis gas","authors":"","doi":"10.1016/j.mencom.2024.06.034","DOIUrl":"10.1016/j.mencom.2024.06.034","url":null,"abstract":"<div><p>A series of catalysts based on mesoporous ceria solid solutions containing NiCo active component was synthesized <em>via</em> co- precipitation, impregnation, hydrothermal and core–shell (sol–gel) methods and applied to partial oxidation and dry reforming of methane. In the co-precipitated and impregnated catalysts, a better NiCo dispersion and a stronger interaction between NiCo species and the ceria- based support in comparison with other catalysts were observed, which affected activity and selectivity. Thus, simpler methods of applying the active component were more advantageous owing to the manifestation of strong metal–support interactions.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963692","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
Electrochemical C–H arylation of heteroarenes with in situ diazotizated anilines 原位重氮化苯胺与杂环烯的电化学 C-H 芳基化反应
IF 1.8 4区 化学
Mendeleev Communications Pub Date : 2024-07-01 DOI: 10.1016/j.mencom.2024.06.036
{"title":"Electrochemical C–H arylation of heteroarenes with in situ diazotizated anilines","authors":"","doi":"10.1016/j.mencom.2024.06.036","DOIUrl":"10.1016/j.mencom.2024.06.036","url":null,"abstract":"<div><p>A simple and efficient electrochemical C–H arylation of five- membered active heteroarenes involves the application of arenediazonium salts generated <em>in situ</em> from anilines and <em>tert</em>- butyl nitrite. A cathodic reduction-induced radical chain mechanism is proposed.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963694","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 new heterylmethylidene derivatives of isomeric imidazo[4,5-e]thiazolo-fused [1,2,4]triazines 异构咪唑并[4,5-e]噻唑并[1,2,4]三嗪新杂环亚甲基衍生物的合成
IF 1.8 4区 化学
Mendeleev Communications Pub Date : 2024-07-01 DOI: 10.1016/j.mencom.2024.06.029
{"title":"Synthesis of new heterylmethylidene derivatives of isomeric imidazo[4,5-e]thiazolo-fused [1,2,4]triazines","authors":"","doi":"10.1016/j.mencom.2024.06.029","DOIUrl":"10.1016/j.mencom.2024.06.029","url":null,"abstract":"<div><p>Novel 6-heterylmethylidene-3a,9a-diphenylimidazo[4,5-<em>e</em>]-thiazolo[3,2-<em>b</em>][1,2,4]triazines were synthesized by the three-component condensation of imidazo[4,5-<em>e</em>][1,2,4]triazine-3-thione derivative with bromoacetic acid and hetero-aromatic aldehydes. The following MeONa-induced skeletal rearrangement gave the recyclized isomeric products, <em>viz</em>. 7-heterylmethylidene-3a,9a-diphenylimidazo-[4,5-<em>e</em>]thi azolo[2,3-<em>c</em>][1,2,4]triazines.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141952362","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
Adsorption phenomena in solutions of cucurbit[6]uril in the presence of magnesium sulfate 硫酸镁存在下葫芦[6]脲溶液中的吸附现象
IF 1.8 4区 化学
Mendeleev Communications Pub Date : 2024-07-01 DOI: 10.1016/j.mencom.2024.06.040
{"title":"Adsorption phenomena in solutions of cucurbit[6]uril in the presence of magnesium sulfate","authors":"","doi":"10.1016/j.mencom.2024.06.040","DOIUrl":"10.1016/j.mencom.2024.06.040","url":null,"abstract":"<div><p>The behavior of cucurbit[6]uril at the electrode/solution interface in the presence of magnesium sulfate was investigated and quantified. It has been established that at the highest positive potential available for the adsorption of organic compounds, a structure is formed that consists entirely of neutral cavitand molecules.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960180","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
Iodocyclization of olefinic amides with acetoxybenziodoxolone and NaI toward 4-iodomethylated benzoxazines 烯烃酰胺与乙酰氧基苯并碘酮和 NaI 的碘环化反应，生成 4-碘甲基化苯并噁嗪
IF 1.8 4区 化学
Mendeleev Communications Pub Date : 2024-07-01 DOI: 10.1016/j.mencom.2024.06.032
{"title":"Iodocyclization of olefinic amides with acetoxybenziodoxolone and NaI toward 4-iodomethylated benzoxazines","authors":"","doi":"10.1016/j.mencom.2024.06.032","DOIUrl":"10.1016/j.mencom.2024.06.032","url":null,"abstract":"<div><p>Iodocyclization of <em>N</em>-(2-alkenylphenyl)carboxamides with acetoxybenziodoxolone/NaI system gives 4-iodomethyl- 4<em>H</em>-3,1-benzoxazines with high efficiency. The process is triggered by the oxidation of NaI with acetoxybenziodo- xolone to afford iodine cation which is added to alkene moiety to form iodonium species, and the ultimate intra- molecular nucleophilic addition generates the final products.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963701","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
A novel method for a nanosized ZSM-5 (MFI) zeolite synthesis in proton form 以质子形式合成纳米级 ZSM-5（MFI）沸石的新方法
IF 1.9 4区 化学
Mendeleev Communications Pub Date : 2024-05-01 DOI: 10.1016/j.mencom.2024.04.039
Alexey G. Dedov , Alexander A. Karavaev , Alexey S. Loktev , Malika N. Vagapova , Kirill A. Cherednichenko , Konstantin I. Maslakov , Alexey A. Sadovnikov , Sergey P. Molchanov
{"title":"A novel method for a nanosized ZSM-5 (MFI) zeolite synthesis in proton form","authors":"Alexey G. Dedov ,&nbsp;Alexander A. Karavaev ,&nbsp;Alexey S. Loktev ,&nbsp;Malika N. Vagapova ,&nbsp;Kirill A. Cherednichenko ,&nbsp;Konstantin I. Maslakov ,&nbsp;Alexey A. Sadovnikov ,&nbsp;Sergey P. Molchanov","doi":"10.1016/j.mencom.2024.04.039","DOIUrl":"https://doi.org/10.1016/j.mencom.2024.04.039","url":null,"abstract":"<div><p>A new method for the synthesis of nanosized ZSM-5 zeolite with the MFI structure in the proton form is reported. The material was synthesized by the hydrothermal-microwave method and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, low-temperature nitrogen physisorption, thermal desorption of ammonia and solid- state <sup>27</sup>Al NMR. The synthesized material is formed by zeolite particles of 30–80 nm in size, which ensures its high specific surface area, pore volume and interparticle porosity.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141240545","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
Simple and effective synthesis of functionalized (hydroxymethylene)bis(phosphonic) acids 简单有效地合成功能化（羟基亚甲基）双膦酸
IF 1.9 4区 化学
Mendeleev Communications Pub Date : 2024-05-01 DOI: 10.1016/j.mencom.2024.04.029
Anastasia M. Zhirkova, Kirill V. Zaitsev, Andrey A. Prishchenko, Mikhail V. Vasiliev, Marina V. Kotova, Karina A. Uschakova, Laura A. Martirosyan, Irina V. Perminova
{"title":"Simple and effective synthesis of functionalized (hydroxymethylene)bis(phosphonic) acids","authors":"Anastasia M. Zhirkova,&nbsp;Kirill V. Zaitsev,&nbsp;Andrey A. Prishchenko,&nbsp;Mikhail V. Vasiliev,&nbsp;Marina V. Kotova,&nbsp;Karina A. Uschakova,&nbsp;Laura A. Martirosyan,&nbsp;Irina V. Perminova","doi":"10.1016/j.mencom.2024.04.029","DOIUrl":"https://doi.org/10.1016/j.mencom.2024.04.029","url":null,"abstract":"<div><p>‘Technical’ tris(trimethylsilyl) phosphite, (Me<sub>3</sub>SiO)<sub>3</sub>P, as a mixture with (Me<sub>3</sub>SiO)<sub>2</sub>P(O)H and (Me<sub>3</sub>SiO)<sub>3</sub>P(O) (71 : 20 : 9) was obtained upon the action of (Me Si) NH on phosphorous acid H<sub>3</sub>PO<sub>3</sub> in the presence of catalytic amount of Me<sub>3</sub>SiCl. The action of this material on acid chlorides RC(O)Cl affords (hydroxymethylene)bis(phosphonic) acids RC(OH)[P(O)(OH)<sub>2</sub>]<sub>2</sub> in preparative yields.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141240537","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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