Chemistry - An Asian Journal最新文献_第10页

CBr₄ as an Efficient Halogen Bond Donor Catalyst in Pictet-Spengler Cyclizations: A Metal-Free Approach to the Synthesis of Benzazepinoindoles and Tetrahydro-β-carbolines. CBr4作为Pictet-Spengler环化反应中高效卤素键供体催化剂：无金属方法合成苯并氮平吲哚和四氢β-羰基化合物。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-01 DOI: 10.1002/asia.70280

Gokulprasanth Nataraj, Diksha Bansal, Ranjithkumar Chandran, Sunandan Sarkar, Mrinal Kanti Das, Saikat Chaudhuri

{"title":"CBr4 as an Efficient Halogen Bond Donor Catalyst in Pictet-Spengler Cyclizations: A Metal-Free Approach to the Synthesis of Benzazepinoindoles and Tetrahydro-β-carbolines.","authors":"Gokulprasanth Nataraj, Diksha Bansal, Ranjithkumar Chandran, Sunandan Sarkar, Mrinal Kanti Das, Saikat Chaudhuri","doi":"10.1002/asia.70280","DOIUrl":"https://doi.org/10.1002/asia.70280","url":null,"abstract":"Indole-based alkaloids, such as benzazepinoindoles and tetrahydro-β-carbolines, hold profound significance in synthetic organic chemistry due to their diverse biological properties. These structurally intricate molecules are efficiently accessed through the well-established Pictet-Spengler cyclization, a reaction that entails the condensation of amines with carbonyl compounds, followed by an intramolecular cyclization. This transformation was effectively catalyzed by tetrabromomethane (CBr4), an effective metal-free organocatalyst that facilitates high-yielding reactions while accommodating a broad substrate scope. The remarkable adaptability of this strategy enables the construction of a variety of architecturally distinct frameworks, including seven-membered spirobenzazepinoindoles, tetrahydrobenzazepinoindoles, and six-membered tetrahydro-β-carbolines, notably encompassing the naturally occurring alkaloid kovamine. The synthesized compounds were extensively characterized using spectroscopic techniques such as NMR (1H, 13C, 19F, and DEPT-135), IR, and mass spectrometry. NMR titration analysis, alongside DFT computations, were performed to elucidate the molecular-level interactions between CBr4 and carbonyl functionalities.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70280"},"PeriodicalIF":3.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Electron-Donor Functionalization at the N-Position of Ethylenediamine Derivatives for Enhanced Aluminum Corrosion Inhibition. 乙二胺衍生物n位电子给体官能化对铝的增强缓蚀作用。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-31 DOI: 10.1002/asia.202500818

Huilian Liao, Haohua Huang, Lin Li, Shanlei Wang, Lanpo Lv, Xue Han, Anruo Chen, Shengping Wang

{"title":"Electron-Donor Functionalization at the N-Position of Ethylenediamine Derivatives for Enhanced Aluminum Corrosion Inhibition.","authors":"Huilian Liao, Haohua Huang, Lin Li, Shanlei Wang, Lanpo Lv, Xue Han, Anruo Chen, Shengping Wang","doi":"10.1002/asia.202500818","DOIUrl":"https://doi.org/10.1002/asia.202500818","url":null,"abstract":"The use of ethylenediamine-based compounds, including ethylenediamine (EDA), tetramethylethylenediamine (TMEDA), and disodium ethylenediaminetetraacetate (EDTA-2Na), as corrosion inhibitors for aluminum radiators in high-voltage direct current (HVDC) converter valve systems is investigated. The results of the electrochemical analysis demonstrate that EDA spontaneously adsorbs on aluminum surfaces through N-Al coordination, resulting in the formation of a protective layer that achieves a 97.28% corrosion inhibition rate. The electron-donating effect of methyl and carboxymethyl groups increases the electron cloud density of N, which facilitates their electrophilic reaction with Al. The carboxymethyl groups of EDTA-2Na facilitate chelate bonding via simultaneous Al-O/N coordination, resulting in the formation of stable complexes that achieve 99.09% inhibition efficiency. In contrast, the steric hindrance of the methyl group attached to the N atom of TMEDA weakens the adsorption between N and Al, lowering the inhibition efficiency to 96.10%. These molecular-level insights establish definitive structure‒activity relationships, providing scientific guidance for optimizing HVDC coolant formulations through strategic N-functionalization of ethylenediamine scaffolds.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00818"},"PeriodicalIF":3.3,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

From Inception to Innovation: 20 Years of Nanoarchitectonics. 从开始到创新：纳米建筑学的20年。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-31 DOI: 10.1002/asia.202500836

Katsuhiko Ariga, Jingwen Song, Kohsaku Kawakami

{"title":"From Inception to Innovation: 20 Years of Nanoarchitectonics.","authors":"Katsuhiko Ariga, Jingwen Song, Kohsaku Kawakami","doi":"10.1002/asia.202500836","DOIUrl":"https://doi.org/10.1002/asia.202500836","url":null,"abstract":"The term \"nanoarchitectonics\" emerged as the 21st century approached, and it has been in use for around 20 years. We here look back accomplishments of nanoarchitectonics. However, this review will explore several typical topics and their trends instead of a comprehensive description in a chronicle-like manner. Atomic switches and local probe chemistry handle basic-level nanoarchitectonics involving atomic/molecular manipulations. Even within these typical approaches to nanoarchitectonics, the latest research focuses on artificial intelligence. Innovation is also coming to fundamental nanoarchitectonics. Nanoarchitectonics of two-dimensional (2D) and layered materials are characterized by their potential for various practical applications. This lends nanoarchitectonics a sense of innovation with a view to practical applications. Nanoarchitectonics at liquid interfaces have broad applicability to a range of systems, from simple molecules to complex biological systems. The ability to control molecular structure through macroscopic movements that can be used for mass production paves the way for nanoarchitectonics to be applied in industry. The number of papers claiming to be in this field has increased significantly in recent years, as has the scope of its applications. Given these limitless advancements, one might say that nanoarchitectonics is a method for everything in materials science.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00836"},"PeriodicalIF":3.3,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Organocatalytic Regio- and Enantioselective Friedel-Crafts Alkylation of N-Aryl Anilines with Aurone-Derived Azadienes: Access to Benzofuran Embedded Triarylmethanes. n -芳基苯胺与auron衍生的氮杂烯的区域和对映选择性Friedel-Crafts烷基化有机催化：苯并呋喃包埋的三芳基甲烷的获取。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-31 DOI: 10.1002/asia.202500722

Rupkumar Khuntia, Subhrajit Karmakar, Koyal Roy, Kalishankar Bhattacharyya, Subhas Chandra Pan

引用次数: 0

Enantioselective Gram-Scale Synthesis of Rasagiline via Chiral Phosphoric Acid-Catalyzed Reduction of Cyclic Imine. 手性磷酸催化环亚胺还原对映选择性合成雷沙吉兰的研究。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-31 DOI: 10.1002/asia.70286

Hayate Ishizuka, Toma Osawa, Yuta Shimizu, Hideyuki Sogo, Ryoya Imaizumi, Naohisa Shiba, Ayato Nureki, Taisei Matoba, Minami Odagi, Kazuo Nagasawa

{"title":"Enantioselective Gram-Scale Synthesis of Rasagiline via Chiral Phosphoric Acid-Catalyzed Reduction of Cyclic Imine.","authors":"Hayate Ishizuka, Toma Osawa, Yuta Shimizu, Hideyuki Sogo, Ryoya Imaizumi, Naohisa Shiba, Ayato Nureki, Taisei Matoba, Minami Odagi, Kazuo Nagasawa","doi":"10.1002/asia.70286","DOIUrl":"https://doi.org/10.1002/asia.70286","url":null,"abstract":"Rasagiline mesylate is a monoamine oxidase B inhibitor used clinically for treating Parkinson's disease. Conventional synthesis relies on optical resolution, which limits efficiency and scalability. To overcome these challenges, we developed an enantioselective synthesis route using asymmetric transfer hydrogenation (ATH) of a cyclic propargyl imine intermediate. Although cyclic imines are difficult to reduce due to their rigid structures, this challenge was overcome using a chiral phosphoric acid catalyst with a Hantzsch ester, affording chiral amines in high yield and enantioselectivity. The method was successfully scaled to the gram level, affording rasagiline mesylate with >96% enantiomeric excess. Furthermore, this approach showed broad substrate compatibility, underscoring its general utility in the asymmetric reduction of cyclic imine derivatives. Our strategy offers a practical and scalable alternative to existing methods for the synthesis of rasagiline and structurally related optically active amines.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70286"},"PeriodicalIF":3.3,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Stimuli-Responsive Supramolecular Polymers of Mono- and Bis-triazolylphenylazoaniline-Functionalized Copillar[5]Arenes: With Distinctive Binding Modes. 单、双三唑基苯基偶氮苯胺功能化的共柱[5]芳烃的刺激响应超分子聚合物：具有不同的结合模式。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-31 DOI: 10.1002/asia.202500601

Chun-Yi Yao, Yung-Yu Chang, Reguram Arumugaperumal, Tzu-Yi Chao, Putikam Raghunath, Ming-Chang Lin, Wen-Sheng Chung

{"title":"Stimuli-Responsive Supramolecular Polymers of Mono- and Bis-triazolylphenylazoaniline-Functionalized Copillar[5]Arenes: With Distinctive Binding Modes.","authors":"Chun-Yi Yao, Yung-Yu Chang, Reguram Arumugaperumal, Tzu-Yi Chao, Putikam Raghunath, Ming-Chang Lin, Wen-Sheng Chung","doi":"10.1002/asia.202500601","DOIUrl":"https://doi.org/10.1002/asia.202500601","url":null,"abstract":"Mono- and bis-triazolylphenylazoaniline-functionalized copillar[5]arenes 1 and 2 were synthesized forming linear supramolecular polymers with dual pH and photo responsiveness. Upon acidification, copillar[5]arene 1 undergoes protonation, converting its aniline group into a primary ammonium ion (1-H), which significantly enhances its supramolecular polymerization compared to 1. Designed as an AB-type supramolecular polymer, 1-H exhibits distinct polymerization behavior in contrast to neutral copillar[5]arene 2, which forms a 1:1 supramolecular polymer with dimethoxypillar[5]arene (DMP5). Copillar[5]arene 2 is believed to bind DMP5 through its cavity, linking two aniline groups from separate molecules to form a two component supramolecular polymer. The degree of polymerization of 1-H and the 1:1 ratio of 2 and DMP5 can be controlled by adjusting the pH, as confirmed by pH- and concentration-dependent 1H-NMR and diffusion-ordered spectroscopy (DOSY) experiments. UV-vis spectroscopy and FE-SEM were further used to examine the effects of photoirradiation on polymer morphology and absorption at varying concentrations.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00601"},"PeriodicalIF":3.3,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Recent Advances in the Synthesis of Bicyclo[4.1.0]Heptane Scaffolds. 双环[4.1.0]庚烷支架的合成研究进展。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-29 DOI: 10.1002/asia.202500824

Jiguo Yang, Yue Wang, Er-Qing Li

引用次数: 0

Pd₂₀Te₇ Nanowires as an Efficient Multifunctional Catalyst for CO₂ and O₂ Electroreduction. Pd20Te7纳米线作为CO2和O2电还原的高效多功能催化剂。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-29 DOI: 10.1002/asia.202500833

Chenchen Li, Kailei Cao, Long Chen, Penghao Li, Hanzhuo Luo, Sihui Pan, Qi Shao

{"title":"Pd20Te7 Nanowires as an Efficient Multifunctional Catalyst for CO2 and O2 Electroreduction.","authors":"Chenchen Li, Kailei Cao, Long Chen, Penghao Li, Hanzhuo Luo, Sihui Pan, Qi Shao","doi":"10.1002/asia.202500833","DOIUrl":"https://doi.org/10.1002/asia.202500833","url":null,"abstract":"Discovering a multifunctional electrocatalyst that can achieve the selective electrochemical reduction of a variety of small molecules (such as CO2 and O2, etc.) is a highly promising process. However, most reported Pd-based nanomaterials can only convert one kind of small molecule. In this study, we have constructed Pd20Te7 intermetallic nanowires (Pd20Te7 NWs) with numerous low-coordinated atoms, which can serve as an efficient and multifunctional catalyst for CO2 reduction reaction (CO2RR) and oxygen reduction reaction (ORR). For CO2RR, Pd20Te7 NWs can achieve CO Faraday efficiency (FECO) of 96.2% at the potential of -0.8 V versus RHE. For ORR, Pd20Te7 NWs have selectivity for H2O2 of over 90%. Moreover, at 0.2 V versus RHE, the H2O2 production rate of Pd20Te7 NWs can achieve 1624.2 mmol gPd -1 h-1, which is approximately 8.5 times that of Pd NWs. Compared with Pd NWs, the optimized electronic structure and surface morphology of Pd20Te7 NWs balance the adsorption of COOH* and CO* on the catalyst during CO2RR and change the adsorption mode of O2 (side-on to end-on) during ORR, thus promoting CO and H2O2 generation during CO2RR and ORR, respectively. This work highlights the importance of electronic structure and surface morphology modification of metal catalysts for electrocatalytic reactions.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00833"},"PeriodicalIF":3.3,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Influence of Ligand's Electronic Effect vs Temperature on Solvent Free Catalytic CO₂ Fixation and Noncovalent Interactions in Molecular Architecture of Zn-Complexes. 配体电子效应随温度变化对无溶剂催化CO2固定和锌配合物分子结构非共价相互作用的影响

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-28 DOI: 10.1002/asia.202500823

Anindita Das, Surajit Das, Dhiraj Das, Sayan Sarkar, Kuntal Pal

{"title":"Influence of Ligand's Electronic Effect vs Temperature on Solvent Free Catalytic CO2 Fixation and Noncovalent Interactions in Molecular Architecture of Zn-Complexes.","authors":"Anindita Das, Surajit Das, Dhiraj Das, Sayan Sarkar, Kuntal Pal","doi":"10.1002/asia.202500823","DOIUrl":"https://doi.org/10.1002/asia.202500823","url":null,"abstract":"A series of mononuclear bis-ligated Zn(II) octahedral complexes [Zn(LMes)2] (ZnMes), [Zn(LOMe)2] (ZnOMe), [Zn(LCF3)2] (ZnCF3), and [Zn(LCl)2] (ZnCl) have been synthesized using tridentate N/N/N donors, maleonitrile tethered, half-reduced Schiff base ligands, ((2-(benzylamino)-3-((E)-(pyridin-2-ylmethylene)amino)maleonitrile) derivatives, HLMes, HLOMe, HLCF3 and HLCl). All the compounds were well characterized by spectroscopy and structurally. The noncovalent interactions present in the lattice of Zn-complexes were studied in detail to explain the origin of molecular architecture using Hirshfeld surface (HS) analysis. The catalytic activity for the coupling of CO2 with epoxides under mild and solvent free condition was demonstrated. The variable electronic effect of ligands due to different substitution at the ligand's backbone was correlated with the variation in catalytic yield. The reverse electronic effect of the ligand due to the rise of temperature in the yield of catalysis was mechanistically explained in terms of the way to the formation of the active catalyst.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00823"},"PeriodicalIF":3.3,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Yolk-Shell Fe₃O₄/Pd@ZrO₂ Catalyst with Space-Confined Effect for Enhancing 4-Nitrophenol Reduction. 具有空间限制效应的蛋黄壳Fe3O4/Pd@ZrO2催化剂促进4-硝基苯酚还原

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-08-28 DOI: 10.1002/asia.202500401

Xiaojing Huang, Quanhua Gan, Dandan Wang, Huixu Qiu, Jian Luo, Weiting Yang, Yida Deng

{"title":"A Yolk-Shell Fe3O4/Pd@ZrO2 Catalyst with Space-Confined Effect for Enhancing 4-Nitrophenol Reduction.","authors":"Xiaojing Huang, Quanhua Gan, Dandan Wang, Huixu Qiu, Jian Luo, Weiting Yang, Yida Deng","doi":"10.1002/asia.202500401","DOIUrl":"https://doi.org/10.1002/asia.202500401","url":null,"abstract":"Submicron catalysts with tailored 3D architectures offer unique opportunities to manipulate nanoscale mass transport and active site distribution, thereby enhancing catalytic performance. Herein, we constructed a yolk-shell Fe3O4@H-ZrO2 carrier to provide a semi-open interstitial cavity. Subsequently, Pd nanoparticles were introduced into this cavity by a vacuum-assisted strategy, which resulted in precise confinement and uniform dispersion of Pd nanoparticles. This structural confinement improved the accessibility of the active site while inhibiting aggregation and surface migration. To systematically evaluate the confinement effect, we synthesized and compared three structurally distinct carriers: hollow (H-ZrO2), core-shell (Fe3O4@ZrO2), and yolk-shell (Fe3O4@H-ZrO2). Among them, Fe3O4/Pd@H-ZrO2 completely reduced 4-nitrophenol to 4-aminophenol within 7 min under ambient conditions. Post-catalytic characterizations (HRTEM, PXRD, FTIR) confirmed the excellent structural robustness and palladium retention. Magnetic separation-driven cycling further demonstrated the high reusability of the catalyst, with 96.2% of the activity retained after eight cycles. In addition, pH effects, common environmental anions, and humic acid interference were investigated to fully assess catalytic stability and environmental suitability. This work can generally construct space-confined catalysts and provide new perspectives on structure-performance relationships in environmental catalysis and beyond.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00401"},"PeriodicalIF":3.3,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144937084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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