Journal of Organometallic Chemistry最新文献_第8页

A chitosan-tragacanth gum polymeric composite for the creation of gold nanoparticles as an efficient catalyst for CC coupling in water 壳聚糖-黄甲胶聚合物复合材料，用于制备金纳米颗粒，作为CC在水中偶联的有效催化剂

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-30 DOI: 10.1016/j.jorganchem.2025.123928

Narinderjit Singh Sawaran Singh , Waqid Al-Mussawi , P.D. Jangir , Muktha Eti , Tanmoy Prida , S. Radhika , Gaganjot Kaur , Erkaboy Davletov , Usmonjon Akhmedov , Alisher Abduvokhidov , M.A. Diab , Heba A. El-Sabban

A composite material made from chitosan and tragacanth gum (CS-TG) was made and applied to help create gold nanoparticles in water by reducing and stabilizing them. A variety of modern tests, such as Ultraviolet-visible (UV–Vis), Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FE-SEM), Energy-dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), and Inductively coupled plasma optical emission spectroscopy (ICP-OES), confirmed that the CS-TG/Au NPs were successfully fabricated. The images from TEM showed that the Au NPs were round, evenly distributed, and approximately 40–60 nanometers in size. After analyzing the CS-TG/Au NPs, it was effectively used as a catalyst in the CC coupling connection through the Suzuki-Miyaura coupling (SMC), producing high amounts of biaryls under gentle conditions in water. The catalyst showed great stability and true heterogeneity, which was verified by experiments involving hot filtration. Importantly, the catalyst could be reused for 7 times in a row with only a slight decrease in effectiveness, showing that it could be a strong and eco-friendly choice for constructing CC bonds.

制备了一种由壳聚糖和黄棘胶（CS-TG）制成的复合材料，并应用于通过还原和稳定水中的金纳米颗粒来帮助生成金纳米颗粒。紫外-可见（UV-Vis）、透射电子显微镜（TEM）、场发射扫描电子显微镜（FE-SEM）、能量色散x射线（EDX）、x射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）和电感耦合等离子体光学发射光谱（ICP-OES）等多种现代测试证实了CS-TG/Au NPs的成功制备。TEM图像显示，Au NPs呈圆形，分布均匀，尺寸约为40-60纳米。通过对CS-TG/Au NPs的分析，发现CS-TG/Au NPs通过Suzuki-Miyaura偶联（SMC）有效地作为CC偶联连接的催化剂，在温和的条件下在水中产生大量的双芳烯。通过热过滤实验验证了催化剂的稳定性和非均质性。重要的是，该催化剂可以连续重复使用7次，而效率仅略有下降，这表明它可能是构建CC键的强大且环保的选择。

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引用次数: 0

Photophysical and electrochemical behaviour of ferrocene–triazole–BODIPY conjugate: Experimental and theoretical investigations 二茂铁-三唑- bodipy共轭物的光物理和电化学行为：实验和理论研究

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-28 DOI: 10.1016/j.jorganchem.2025.123923

Supriya Routray , Laxmipriya Nayak , Subhadeep Acharya , Simran Pattnaik , Saiprakash Rout , Sikha Sayantani , Rashmirekha Satapathy

A novel ferrocene-triazole-BODIPY conjugate (Fc-Tz-BDP) and its non-ferrocenyl analogue (Ph-Tz-BDP) were designed and synthesized via the copper(I)-catalyzed azide-alkyne cycloaddition reaction. The newly synthesized conjugates were characterized using ¹H NMR, ¹³C NMR, ¹¹B NMR, ¹⁹F NMR, FT-IR, and mass spectral analysis. A detailed investigation into their photophysical, electrochemical, and theoretical properties was conducted to elucidate the electronic interactions between the ferrocene and BODIPY moieties. Photophysical studies revealed that the ferrocene unit acts as a quencher of the BODIPY fluorescence, with the quantum yield being more than four times lower than that of the reference Ph-Tz-BDP due to an efficient PET mechanism. Cyclic voltammetry experiments confirmed that the HOMO is localized on the electron-donating ferrocene unit, while the LUMO resides on the BODIPY core, providing the driving force for PET. These experimental results were supported by DFT and TD-DFT calculations.

通过铜(I)催化叠氮化物-炔环加成反应，设计并合成了一种新型二茂铁-三唑- bodipy共轭物（Fc-Tz-BDP）及其非二茂铁基类似物（Ph-Tz-BDP）。采用1H NMR、13C NMR、11B NMR、19F NMR、FT-IR和质谱分析对新合成的共轭物进行了表征。研究了它们的光物理、电化学和理论性质，以阐明二茂铁和BODIPY基团之间的电子相互作用。光物理研究表明，二铁单元作为BODIPY荧光的猝灭剂，由于有效的PET机制，其量子产率比参考Ph-Tz-BDP低4倍以上。循环伏安实验证实，HOMO定位在给电子的二茂铁单元上，而LUMO则位于BODIPY核上，为PET提供了动力。这些实验结果得到了DFT和TD-DFT计算的支持。

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引用次数: 0

Structure, electronic, vibrational, and NLO properties of thiolato-bridged diruthenium cations: A computational study 巯基偶联二钌阳离子的结构、电子、振动和NLO性质：计算研究

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-25 DOI: 10.1016/j.jorganchem.2025.123911

Abdelatif Messaoudi

This study presents a computational investigation of five monocationic dinuclear Ruthenium compounds with three bridges, which are either thiolate or hydride anions, according to the formulas The [(η⁶-arene)Ru(μ-H)_n({μ-(p-X-C₆H₄)-S}_mRu(η⁶-arene)]⁺ (with either n=1/m=2 or n=2/m=1). Depending on the nature of the terminal and symmetric hexahapto arene ligands (1,2,4,5-Me₄C₆H₂ or C₆Me₆) and the nature of terminal thiolate substituent (X = Br, Me, C₄H₃S), the five compounds are nicknamed as A1-A5, the first dimer in the series being the unique doubly H bridged species. The DFT and time-dependent TD-DFT methods were used to explore and compare structural, electronic, and optical properties. The geometry optimizations were performed at various levels of theory, all showing satisfactory agreements with the experimental crystallographic structures, especially concerning the skeletal Ru-Ru and Ru-S bond distances. Reactivity descriptors derived from the nature of the frontier MOs revealed that the doubly H-bridged complex A1 is the most electrophilic and reactive species, while A4 and A2 are the most electronically stable. Partial charge analysis confirmed the nucleophilic character of hydride ligands and the dual donor–acceptor behavior of sulfur atoms. UV-Vis spectra simulations highlighted metal-to-ligand charge transfer (MLCT) as the dominant excitation mode across all the complexes. At the same time, the Br-substituents at the thiolate bridges in A3 seem to confer additional ligand–ligand charge transfer (LLCT) character. Complex A5 emerged as the most promising system, showing the highest oscillator strengths and intense π→π* transitions. Nonlinear optical (NLO) analysis revealed exceptional first hyperpolarizability (β_tot) for A5, with values up to 5763.38 × 10-³³ esu over 25,000 times higher than that of urea. These findings position A5 as a strong candidate for optoelectronic and second-order NLO applications. Overall, this work provides valuable insights into the structure–property relationships of diruthenium complexes and underscores the importance of functional and basis set selection in modeling transition metal systems.

本文根据公式the [（η - 6-芳烃）Ru(μ- h)n({μ-(p-X-C6H4)- s}mRu（η - 6-芳烃）]+ （n=1/m=2或n=2/m=1）计算了5种具有硫酸盐或氢化物阴离子的单离子双核钌化合物。根据末端和对称六链芳烃配体（1,2,4,5- me4c6h2或C6Me6）的性质以及末端硫代取代基（X = Br, Me, C4H3S）的性质，这五种化合物被昵称为A1-A5，该系列中的第一个二聚体是独特的双H桥物种。使用DFT和时间相关的TD-DFT方法来探索和比较结构，电子和光学性质。在不同的理论水平上进行了几何优化，都显示出与实验晶体结构满意的一致，特别是在骨架Ru-Ru和Ru-S键距离方面。根据前沿MOs性质得出的反应性描述符表明，双h桥配合物A1是最亲电性和活性最强的物质，而A4和A2是最稳定的电子物质。部分电荷分析证实了氢化物配体的亲核性质和硫原子的双给受体行为。紫外可见光谱模拟表明，金属-配体电荷转移（MLCT）是所有配合物的主要激发模式。同时，A3中巯基桥上的br取代基似乎赋予了额外的配体-配体电荷转移（LLCT）特征。配合物A5表现出最高的振荡强度和强烈的π→π*跃迁，是最有希望的体系。非线性光学（NLO）分析表明，A5的第一超极化率（βtot）高达5763.38 × 10-33 esu，是尿素的2.5万倍以上。这些发现使A5成为光电和二阶NLO应用的有力候选者。总的来说，这项工作为二钌配合物的结构-性质关系提供了有价值的见解，并强调了在过渡金属系统建模中功能和基集选择的重要性。

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引用次数: 0

Graphene/graphitic-based metal-organic frameworks (MOFs) for photocatalytic degradation of pharmaceutical pollutants: A review 用于光催化降解药物污染物的石墨烯/石墨基金属有机框架（mof）研究进展

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-25 DOI: 10.1016/j.jorganchem.2025.123915

Stephen Sunday Emmanuel , Abdullah K. Alanazi , Ademidun Adeola Adesibikan , Christopher Olusola Olawoyin , Ebenezer Temiloluwa Abimbola , Olumide James Oluwole

Recently, efforts have been directed toward the use of improved functional nanomaterials like graphene/graphitic-based metal-organic frameworks (GBMOFs) with abundant active sites, better light absorption, enhanced surface functionalities, and recyclability to advance photocatalytic technology for the remediation of aquatic pollutants like pharmaceuticals. Thus, this study aims to review and explore original research works on the photocatalytic degradation of pharmaceutical pollutants in aqueous environments using GBMOFs. The scope of this study covers degradation performance, reusability, and stability dynamics, the effect of co-existing ions, degradation mechanism/pathways, and the potential of GBMOFs in industrial/real pharmaceutical effluent treatment. Notably, from the study, it was found that over 75 % degradation efficiency can be achieved by various GBMOFs in <120 min and irradiation power of 5–500 W for most pharmaceutical pollutants. This excellent degradation performance was discovered to be largely facilitated by •O₂⁻and •OH through hydroxylation, deamination, decarboxylation, dealkylation, CN/S-N bond cleavage, demethylation, and ring-opening processes due to abundant active oxygen-containing functional groups present in GBMOFs. It was also revealed that spent GBMOFs can be reused for about 3–10 cycles while still maintaining >75 % degradation efficiency in most cases without serious structural damage. Findings from the effect of co-existing ions (where monovalent ions exhibit less effect compared to divalent ions) and real pharmaceutical effluent degradation studies established that GBMOFs hold great promise for pilot/industrial scale applications. Overall, this review contributes to the advancement of wastewater treatment, water security, material science, and Sustainable Development Goals 6 and 14.

近年来，人们一直致力于使用功能纳米材料，如石墨烯/石墨基金属有机框架（GBMOFs），这些材料具有丰富的活性位点、更好的光吸收、增强的表面功能和可回收性，以推进光催化技术对水生污染物（如药物）的修复。因此，本研究旨在回顾和探索利用GBMOFs光催化降解水环境中药物污染物的原始研究成果。本研究的范围包括降解性能、可重用性和稳定性动力学、共存离子的影响、降解机制/途径以及GBMOFs在工业/实际制药废水处理中的潜力。值得注意的是，从研究中发现，各种GBMOFs在120 min和5-500 W的照射功率下，对大多数药物污染物的降解效率可达到75%以上。研究发现，由于GBMOFs中含有丰富的活性含氧官能团，因此•O2−和•OH通过羟基化、脱胺、脱羧、脱烷基、cn - s - n键裂解、去甲基化和开环等过程促进了这种优异的降解性能。研究还表明，在大多数情况下，使用过的GBMOFs可以重复使用约3-10个循环，同时仍保持75%的降解效率，而不会造成严重的结构破坏。共存离子（单价离子的作用小于二价离子）和真正的制药废水降解研究的结果表明，GBMOFs在中试/工业规模应用方面具有很大的前景。总的来说，这篇综述有助于推进废水处理、水安全、材料科学和可持续发展目标6和14。

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引用次数: 0

Preparation and characterization of Cu (II)-porphyrin supported on Fe3O4-SiO2 (CuIIMTNCPP-SiO2-Fe3O4) in one-pot and pseudo-four-component synthesis of benzimidazole derivatives Fe3O4-SiO2负载Cu (II)-卟啉（CuIIMTNCPP-SiO2-Fe3O4）的制备及表征及伪四组分合成苯并咪唑衍生物

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-25 DOI: 10.1016/j.jorganchem.2025.123914

Ameer H. Alwash , Mustafa H. Ghazi , Mahmoud S. Muter , Qais R. Lahhob

This study presents the development of a novel, sustainable nanocatalyst, Cu (II)-porphyrin supported on a Fe₃O₄-SiO₂ nanostructure, designed for the efficient synthesis of benzimidazole derivatives. The catalyst was meticulously synthesized via sequential approaches, involving ligand preparation, metalation of ligand, surface functionalization of Fe₃O₄, and covalent immobilization, ensuring high purity, stability, and reusability. Comprehensive characterization techniques, including FE-SEM, FT-IR, XRD, VSM, XPS and AAS, confirmed the structural integrity, magnetic properties, and active metal loading of the nanocomposite. The catalytic activity was evaluated through the synthesis of benzimidazoles using a variety of benzaldehyde derivatives, benzo-1,2-quinone, and ammonium acetate under mild, alcoholic aqueous medium at room temperature. Results demonstrated excellent yields (up to 96%) within short reaction times (20–60 min), with the catalyst exhibiting high turnover numbers (up to 480) and turnover frequencies (up to 1154 h⁻¹). Importantly, the catalyst demonstrated remarkable recyclability, maintaining over 85% yield after five cycles. This methodology offers a cost-effective, environmentally friendly alternative to traditional protocols, with broad substrate scope and potential for large-scale application in pharmaceutically relevant heterocycle synthesis.

本研究提出了一种新型的、可持续的纳米催化剂，Fe₃O₄-SiO₂纳米结构负载的Cu (II)-卟啉，用于高效合成苯并咪唑衍生物。该催化剂通过配体制备、配体金属化、Fe3O4表面功能化和共价固定等一系列步骤精心合成，确保了高纯度、稳定性和可重复使用性。FE-SEM、FT-IR、XRD、VSM、XPS和AAS等综合表征技术证实了纳米复合材料的结构完整性、磁性能和活性金属负载。以多种苯甲醛衍生物、苯并1,2-醌和乙酸铵为原料，在温和的、含酒精的室温条件下合成苯并咪唑，考察了其催化活性。结果表明，在很短的反应时间内（20-60分钟），收率高达96%，催化剂的周转次数（高达480次）和周转频率（高达1154 h⁻¹）很高。重要的是，催化剂表现出显著的可回收性，在5次循环后保持85%以上的收率。该方法为传统方法提供了一种经济、环保的替代方案，具有广泛的底物范围和在药学相关的杂环合成中大规模应用的潜力。

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引用次数: 0

Synthesis, characterization, and catalytic applications of graphene oxide-based tin-cobalt oxide bimetallic nanocomposites (GOSnCoO): Structural insights and influence on fuel properties 氧化石墨烯基锡-氧化钴双金属纳米复合材料（GOSnCoO）的合成、表征和催化应用：结构洞察及其对燃料性能的影响

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-24 DOI: 10.1016/j.jorganchem.2025.123913

Saba Jamil , Mehwish Shabbir , Nadia Mushtaq , Shanza Rauf Khan , Sarah Alharthi , Mohammed A. Amin , Muhammad Ramzan Saeed Ashraf Janjua , Muhammad Usman Khan

The nanocomposites have attained a lot of attention mainly due to their immense number of uses in various industries. This study used the Hummer's technique to synthesize graphene oxide and the hydrothermal approach to create tin cobalt oxide nanoparticles. Nanocomposites were synthesized by solvothermal method from the prepared graphene oxide and cobalt tin oxide nanoparticles. The freshly created product was examined using a variety of instruments to analyze its structure and related properties, such as Scanning Electron Microscope (to analyze the surface morphology and structure of materials at a very high magnification and resolution), UV-Vis spectroscopy(to evaluate the optical properties and monitor dye degradation by measuring light absorbance in the UV and visible range) and FTIR (to identify the functional groups and analyze the chemical bonding present in a materials by measuring its infrared absorption spectrum). Data were further analyzed by using different software i.e. MATCH, Origin and VESTA. Vesta software was used to confirm the structural composition of the product as well as its other parameters, which were explained by X-ray powder diffraction analysis (XRD) (to determine the crystalline structure,phase identification and crystalline size of materials by analyzing the diffraction pattern of X-rays interacting with the crystal lattice). The utilization of GOSnCoO nanocomposite for the degradation of Rhodamine B (RhB) dye was performed to investigate its photocatalytic activity. This nanocomposite was able to degrade and decolorize Congo red dye and RhB dye, suggesting its potential for wastewater treatments. Additionally, the nanocomposite was explored in other investigations as a fuel additive and differences in the flash point, fire point, pour point, and cloud point as key diesel oil characteristics. These key diesel oil characteristics varied as a result of the addition of the nanocomposite and in relation to concentration, affected the physicochemical behavior of the diesel. Exploring both environmental and fuel-related uses with a single material adds novelty and highlights its versatile potential.

纳米复合材料因其在各行业的广泛应用而受到广泛关注。本研究使用悍马的技术合成氧化石墨烯，并使用水热方法制备氧化锡钴纳米颗粒。将制备的氧化石墨烯和氧化钴锡纳米颗粒采用溶剂热法制备了纳米复合材料。使用各种仪器检查新创建的产品以分析其结构和相关特性，例如扫描电子显微镜（以非常高的放大倍率和分辨率分析材料的表面形态和结构）；紫外-可见光谱学（通过测量紫外和可见光范围内的光吸收来评估光学特性并监测染料降解）和红外光谱（通过测量材料的红外吸收光谱来识别功能基团并分析材料中存在的化学键）。使用MATCH、Origin和VESTA软件对数据进行进一步分析。利用Vesta软件确定产品的结构组成及其他参数，并通过x射线粉末衍射分析（XRD）进行解释（通过分析x射线与晶格相互作用的衍射图来确定材料的晶体结构、物相识别和晶体尺寸）。利用GOSnCoO纳米复合材料降解罗丹明B （Rhodamine B, RhB）染料，考察其光催化活性。该纳米复合材料能够降解和脱色刚果红染料和RhB染料，表明其在废水处理中的潜力。此外，在其他研究中，纳米复合材料作为燃料添加剂进行了探索，并将闪点、燃点、倾点和浊点的差异作为柴油的关键特性。这些关键的柴油特性随着纳米复合材料的加入而变化，并与浓度有关，影响了柴油的物理化学行为。用单一材料探索环境和燃料相关的用途增加了新颖性，并突出了它的多用途潜力。

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引用次数: 0

Palladium nanoparticles supported over magnetic chitosan-tamarind gum composite as a reusable catalyst for CC coupling reactions 磁性壳聚糖-罗望子胶复合材料负载钯纳米粒子作为CC偶联反应的可重复使用催化剂

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-24 DOI: 10.1016/j.jorganchem.2025.123912

Waqid Al-Mussawi , Narinderjit Singh Sawaran Singh , Ammar Yasir Ahmed , P.R. Jangir , Alejandro Pérez-Larios , Carlos Soto-Robles , Osmin Áviles-García , Mustafa Ahmed Diab , H. Ahamd El Sabban , Mutabar Latipova , Ruslanbek Siddikov , Abdulrahman A. Almehizia

In this work, we detailed the fabrication and assessment of an innovative magnetic material that features Pd NPs decorated on functionalized Fe₃O₄ nanoparticles utilizing chitosan-tamarind gum (CHI-TG) combine polymers. The fabricated nanocatalyst (Fe₃O₄@CHI-TG/Pd NPs) was analyzed using various methods, including TEM, FESEM, EDS, mapping atudy, VSM, and ICP-OES spectroscopy. The catalytic efficacy of the Fe₃O₄@CHI-TG/Pd NPs was evaluated for the formation of C–C bonds via Stille coupling reactions. The related biaryl products were produced in good yields, and the Fe₃O₄@CHI-TG/Pd NPs catalyst was successfully recovered using a magnetic field and demonstrated sufficient stability for reuse over 6 consecutive cycles with a minimal decline in activity.

在这项工作中，我们详细介绍了利用壳聚糖-罗望子胶（CHI-TG）组合聚合物在功能化Fe3O4纳米颗粒上修饰Pd NPs的创新磁性材料的制备和评估。对制备的纳米催化剂（Fe3O4@CHI-TG/Pd NPs）进行了TEM、FESEM、EDS、图谱研究、VSM和ICP-OES等分析。考察了Fe3O4@CHI-TG/Pd NPs通过Stille偶联反应形成C-C键的催化效能。相关的联芳基产品产率很高，并且Fe3O4@CHI-TG/Pd NPs催化剂在磁场作用下成功回收，并且表现出足够的稳定性，可以在连续6次循环中重复使用，活性下降最小。

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引用次数: 0

Recyclable and reusable AuBr3/PEG-400/H2O system for highly efficient three-component coupling of aldehydes, alkynes, and amines 可回收和可重复使用的AuBr3/PEG-400/H2O体系，用于醛、炔和胺的高效三组分偶联

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-23 DOI: 10.1016/j.jorganchem.2025.123908

Xiao Chen, Jiatao Zhang, Mingzhong Cai

AuBr₃ in a mixture of poly(ethylene glycol) (PEG-400) and water is shown to be a highly efficient catalyst for the three-component coupling of aldehydes, alkynes, and amines via C‒H activation of alkynes. In the presence of 1 mol% of AuBr₃, the reaction proceeds smoothly in PEG-400/H₂O (1:1) at 100 °C, generating a variety of propargylamines in 57–96% yields along with water as the only byproduct. The isolation of the products is easily performed by the extraction with cyclohexane and more importantly, expensive AuBr₃ in PEG-400/H₂O system could be readily recycled and reused at least six times without any significant loss of catalytic efficiency. Compared with recyclable metal-catalyzed A³-coupling, the easy product isolation, the AuBr₃/PEG-400/H₂O system recycling, and avoiding the preparation of supported metal catalysts, which requires a complex multi-step procedure, are important advantages of the developed methodology.

在聚乙二醇（PEG-400）和水的混合物中，AuBr3是一种高效的催化剂，通过C-H活化炔烃，实现醛、炔和胺的三组分偶联。当AuBr3浓度为1mol %时，在PEG-400/H2O（1:1）条件下，反应在100℃下顺利进行，生成多种丙胺，产率为57-96%，唯一的副产物是水。更重要的是，昂贵的AuBr3在PEG-400/H2O体系中可以很容易地回收和重复使用至少6次，而没有明显的催化效率损失。与可回收金属催化的a3偶联相比，该方法具有易于产物分离、AuBr3/PEG-400/H2O体系可循环利用、避免制备负载型金属催化剂等重要优点。

引用次数: 0

Sonogashira reaction using DMF-stabilized Pd nanoclusters as catalysts and its application to synthesis for polycyclic aromatic hydrocarbon-fused benzofurans dmf稳定钯纳米团簇催化Sonogashira反应及其在多环芳烃-苯并呋喃合成中的应用

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-22 DOI: 10.1016/j.jorganchem.2025.123909

Rui Umeda, Ryoya Miyamoto, Ryohei Takeshita, Shota Nakahama, Minori Shibano

Efficient reaction conditions for the Sonogashira coupling between o-iodoanisole and terminal acetylenes were developed using 0.1 mol% DMF-stabilized palladium nanoclusters as the catalysts. The resulting diarylacetylenes bearing an ortho-methoxy group were subsequently converted into benzofuran derivatives via iodine-mediated iodocyclization. Further transformation through palladium-catalyzed intramolecular cyclization afforded PAH-fused benzofuran derivatives.

以0.1 mol% dmf稳定的钯纳米团簇为催化剂，建立了邻碘苯甲醚与末端乙炔间Sonogashira偶联的高效反应条件。得到的含邻甲氧基的二芳基乙炔随后通过碘介导的碘环化转化为苯并呋喃衍生物。通过钯催化的分子内环化进一步转化得到多环芳烃融合的苯并呋喃衍生物。

引用次数: 0

Recent advances in the chemistry of 1,3-oxaselenolanes, 1,3-oxaselenoles, benzo[d][1,3]oxaselenoles and their analogues 1,3-草烯烯烷、1,3-草烯烯烷、苯并[d][1,3]草烯烯烷及其类似物的化学进展

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-22 DOI: 10.1016/j.jorganchem.2025.123906

Eman R. Elsharkawy , Rasha Jame , Ateyatallah Aljuhani , Moustafa A. Gouda

1,3-Oxaselenoles are a class of five-membered heterocyclic compounds containing oxygen and selenium atoms in the 1 and 3 positions, respectively, and have garnered attention in organic chemistry due to their unique reactivity and potential applications. The synthesis of 1,3-oxaselenolanes, along with related compounds like 1,3-oxaselenoles and benzo[d][1,3]oxaselenoles, can be accomplished using various methods. These include (i) cycloselenization of 2-selanyl-1-ethanol or selenoacetic acid with various aldehydes, (ii) cycloselenization of isoselenocyanates or isocyanates with various substrates, (iii) reaction of gem‑dicyano epoxides with KSeCN, (iv) reaction of 1,3-diketone with SeO₂, (v) reaction of selenoamide with α-haloketones, (vi) Viehe's salt with o-bromophenols among other techniques.

1,3-氧硒烯醚是一类氧和硒原子分别位于1位和3位的五元杂环化合物，因其独特的反应活性和潜在的应用前景而受到有机化学领域的关注。1,3-草烯烯烷及其相关化合物如1,3-草烯烯烷和苯并[d][1,3]草烯烯烷可通过多种方法合成。这些技术包括(i) 2-selanyl-1-乙醇或硒乙酸与各种醛的环硒化反应，（ii）异硒氰酸酯或异氰酸酯与各种底物的环硒化反应，（iii）双氰基环氧化物与KSeCN的反应，（iv） 1,3-二酮与SeO2的反应，(v)硒酰胺与α-卤酮的反应，（vi） Viehe盐与邻溴酚的反应等等。

引用次数: 0