Article
Chemistry, Physical
Antonio J. LaPorte, Yao Shi, Jason E. Hein, Martin D. Burke
Summary: Stereospecific Csp(3) Suzuki-Miyaura cross-coupling simplifies the synthesis of stereochemically complex small molecules, but current methods are not compatible with complex building blocks commonly found in natural products and other complex targets. This study presents a method for embedding the alpha-methyl-beta-hydroxyl motif within stereochemically defined secondary alkyl boronic ester building blocks, allowing for stereospecific cross-coupling. The use of beta-aryloxysilyl groups addresses the decrease in reactivity and side reactions associated with beta-oxygen-containing Csp(3) boronic esters. Mechanistic studies reveal the activation of a dihydroxysiloxaborolate as a transmetalation partner in a stereospecific process that retains configuration.
Article
Multidisciplinary Sciences
Lara E. Zetzsche, Jessica A. Yazarians, Suman Chakrabarty, Meagan E. Hinze, Lauren A. M. Murray, April L. Lukowski, Leo A. Joyce, Alison R. H. Narayan
Summary: This study demonstrates the use of cytochrome P450 enzymes for biocatalytic cross-coupling reactions, enabling the formation of sterically hindered biaryl bonds through oxidative C-C bond formation. By engineering the substrate and atroposelectivity of the P450 enzyme, a highly efficient and selective process has been developed.
Article
Chemistry, Applied
Mingyang Gao, Jiamin Wang, Weixiang Shang, Yuchao Chai, Weili Dai, Guangjun Wu, Naijia Guan, Landong Li
Summary: Suzuki-Miyaura cross-coupling reaction is a powerful method to construct carbon-carbon bonds and is widely used in the synthesis of functional organic compounds. In this study, zeolite-encased Pd particles (Pd@MFI) were successfully prepared and investigated as promising heterogeneous catalysts for the Suzuki-Miyaura cross-coupling reaction. The Pd@MFI catalysts showed high activity, with dispersed Pd particles efficiently stabilized within the MFI zeolite matrix. The presence of basic sites adjacent to Pd sites was crucial for achieving high catalytic activity.
Article
Nanoscience & Nanotechnology
Jianguo Liu, Hao Zhan, Nan Wang, Yanpei Song, Chenguang Wang, Xinming Wang, Longlong Ma, Lungang Chen
Summary: A novel COFs-supported nanoparticles Pd catalyst for region-selective SMC reaction of aryl boronic acids and aryl halides, especially with halogenated aryl boronic acids, was reported. The methodology offers mild operating conditions, broad functional group tolerance, and environmental friendliness, and the catalysts are stable and reusable. The precise regulation of nanoparticles Pd activity with the well-designed COF ligand is the most outstanding advantage.
ACS APPLIED NANO MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Massimo C. D'Alterio, Eric Casals-Cruanas, Nikolaos V. Tzouras, Giovanni Talarico, Steven P. Nolan, Albert Poater
Summary: The story of C-C bond formation involves various reactions, with Suzuki-Miyaura reaction being one of the most outstanding ones. The focus is on the formation of catalytically active species, with preactivation potentially playing a role as the rate determining step in the overall reaction. Computational chemistry plays a key role in identifying the rate determining step and achieving milder conditions in experimental settings through predictive catalysis.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Organic
Ruoqian Fan, Meiying Kuai, Dong Lin, Felix Bauer, Weiwei Fang
Summary: A new palladacyclic N-heterocyclic carbene pre-catalyst was designed and successfully applied for Pd-catalyzed C-N cross-coupling reactions of challenging heteroaryl chlorides. The desired aminated products were achieved in good to excellent yields.
Article
Chemistry, Multidisciplinary
Sheng-Qi Qiu, Yu Chen, Xiang-Jun Peng, Shi-Jiang He, Jun Kee Cheng, Yong-Bin Wang, Shao-Hua Xiang, Jun Song, Peiyuan Yu, Junmin Zhang, Bin Tan
Summary: In this study, we achieved the arene-alkene Suzuki-Miyaura coupling reaction between hindered aryl halides and vinyl boronates by designing appropriate ligands and reaction parameters. The axially chiral acyclic aryl-alkenes obtained exhibited remarkable efficiency, enantioselectivity, and E/Z selectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Matthew J. Andrews, Sebastian Brunen, Ruaraidh D. McIntosh, Stephen M. Mansell
Summary: This paper describes the synthesis and catalytic testing of a palladium complex with a 5-membered chelating [N,O] ligand, derived from the condensation of 2,6-diisopropylphenyl aniline and maple lactone. The catalyst was active towards the Suzuki-Miyaura cross-coupling reaction, and its activity was optimised through the selection of base, solvent, catalytic loading and temperature. The catalyst exhibited good activity towards aryl bromides with electron-withdrawing groups, as well as a range of boronic acids and pinacol esters. It was also a capable catalyst for the cross-coupling of aryl chlorides and phenylboronic acid.
Article
Chemistry, Physical
Abdulelah Taher Ali Mohammed, Lijian Wang, Ronghua Jin, Guohua Liu, Chunxia Tan
Summary: The high stability heterogeneous catalyst HS@PdPPh2@MSN was constructed by immobilizing bis((diphenylphosphino)ethyltriethoxysilane)palladium acetate onto the inner wall of a mesoporous organicsilicane hollow shell, showing a well-defined single-site active species within the silicate network. It enabled an efficient Suzuki-Miyaura cross-coupling reaction with up to 95% yield in mild conditions, and could be reused at least five times with good activity, making it a cost-effective and easily synthesized candidate for fine chemical engineering.
Article
Chemistry, Physical
Yanhui Wang, Xiaotian Qi, Qiao Ma, Peng Liu, Gavin Chit Tsui
Summary: The diastereoselective synthesis of densely functionalized tetrasubstituted (E)-monofluoroalkenes via Pd(0)-catalyzed base-free Suzuki-Miyaura crosscouplings offers a significant method for producing pharmaceutically relevant compounds. Computational studies support the reaction design, revealing an intriguing mechanism of C-F bond activation leading to complete control of stereoselectivity. This method does not require extraneous base assistance, making it a powerful tool for stereocontrolled synthesis of monofluoroalkenes.
Article
Chemistry, Physical
Paul O. Peterson, Matthew Joannou, Eric M. Simmons, Steven R. Wisniewski, Junho Kim, Paul J. Chirik
Summary: The synthesis and characterization of phenoxy(imine) iron(II) alkyl precatalysts for C(sp2)-C(sp3) Suzuki-Miyaura cross-coupling reaction is reported. This method utilizes mild alkoxide bases and nonpolar solvents to achieve high efficiency C(sp2)-C(sp3) bond formation with various aryl boronic esters and alkyl bromides. The study also highlights the compatibility of the precatalysts with base-sensitive functionality and the role of boronate intermediates in transmetalation.
Article
Chemistry, Physical
Chau Ming So, On Ying Yuen, Shan Shan Ng, Zicong Chen
Summary: This study presents a general chemoselective Suzuki-Miyaura coupling using a Pd/L33 catalyst, showing efficient coupling of polyhalogenated aryl triflates by controlling reactivity order and key factors, achieving high yields and chemoselectivity with low Pd catalyst loading.
Article
Chemistry, Organic
Wen-Xin Li, Bo-Wen Yang, Xuan Ying, Zhuo-Wen Zhang, Xue-Qiang Chu, Xiaocong Zhou, Mengtao Ma, Zhi-Liang Shen
Summary: The direct cross-coupling of diaryl sulfoxides with aryl bromides via C-S bond cleavage was achieved using nickel(II) as the catalyst, 1,2-bis(diphenylphosphino)ethane (dppe) as the ligand, and magnesium turnings as the reducing metal in THF. This reaction showed a wide range of substrates and could be used for gram-scale synthesis. The one-pot reaction is operationally simple and economically efficient.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Hao Zhang, Xingcong Zhang, Shaolin Shi, Qian He, Xiaohui He, Tao Gan, Hongbing Ji
Summary: This study presents a facile method for the synthesis of high-productivity noble metal single-atom catalysts through direct ball milling. The as-prepared catalysts show excellent catalytic performance for the Suzuki-Miyaura cross-coupling reaction. Moreover, kilogram-scale synthesis of these catalysts is achieved in one batch, indicating great potential for industrial applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Inorganic & Nuclear
Li-Xin You, Ying Xu, Fan Zhang, Jian-Hong Hao, Shi-Yu Xie, Gang Xiong, Andrei S. Potapov, Fu Ding, Ya-Guang Sun
Summary: A novel 3D Sm-MOF was synthesized and functionalized with N-heterocyclic carbene-Pd(II) by post-synthesis modification (PSM) method. The resulting Sm-MOF-Pd exhibited high catalytic activity in Suzuki-Miyaura cross-coupling reactions, with a yield of 99% under optimal conditions. It also maintained good catalytic performance after four cycles.
Article
Chemistry, Physical
Nhan Nu Thanh Ton, Anh Thi Ngoc Dao, Koichiro Kato, Takuma Ikenaga, Dai Xuan Trinh, Toshiaki Taniike
Article
Chemistry, Multidisciplinary
Yoshitaka Koseki, Yoshikazu Ikuta, Liman Cong, Mayumi Takano-Kasuya, Hiroshi Tada, Mika Watanabe, Kohsuke Gonda, Takanori Ishida, Noriaki Ohuchi, Keita Tanita, Farsai Taemaitree, Anh Thi Ngoc Dao, Tsunenobu Onodera, Hidetoshi Oikawa, Hitoshi Kasai
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2019)
Article
Chemistry, Multidisciplinary
Farsai Taemaitree, Yoshitaka Koseki, Nozomi Saito, Ryuju Suzuki, Anh Thi Ngoc Dao, Hitoshi Kasai
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2020)
Article
Chemistry, Multidisciplinary
Farsai Taemaitree, Yoshitaka Koseki, Anh Thi Ngoc Dao, Hitoshi Kasai
Summary: Carrier-free drug nanoparticles are being improved with the use of serum albumin protein, which prevents aggregation and maintains stability in physiological environments, thereby enhancing their anticancer efficiency.
Article
Chemistry, Analytical
Hien Thi Dinh, Nam Trung Tran, Dai Xuan Trinh
Summary: In this study, the adsorptive removal of methylene blue and methyl orange by UiO-66-NO2 nanoparticles was investigated. The adsorption capacity of methyl orange on the nanoparticles was over three times higher than that of methylene blue, attributed to the presence of the -NO2 functional group causing a strong negative mesomeric effect in the metal-organic framework structure.
JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Dai Xuan Trinh, Ngo Nghia Pham, Patchanee Chammingkwan, Toshiaki Taniike
Summary: UiO-66 nanoparticles anchored to PES membranes showed superior desalination performance compared to blank membranes and ZrO2 reference membranes. The hydrophilicity of UiO-66 nanoparticles and the presence of nanochannels in their structure may contribute to this enhanced performance.
Article
Nanoscience & Nanotechnology
Qiang Zhang, Tomoko Inose, Monica Ricci, Jiangtao Li, Ya Tian, Han Wen, Shuichi Toyouchi, Eduard Fron, Anh Thi Ngoc Dao, Hitoshi Kasai, Susana Rocha, Kenji Hirai, Beatrice Fortuni, Hiroshi Uji-I
Summary: Gold-deposited silver nanowire endoscopy is a promising tool for studying pH variations in cells, with high spatiotemporal resolution and sensitivity, by accurately detecting specific pH changes in response to different treatments.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Y. Takeuchi, H. -J. Lee, A. T. N. Dao, H. Kasai, R. Teranishi, K. Kaneko
Summary: The study synthesized metallic nanoparticles of Ag-Pt double-shell on Au-core with a hollow-granular shell structure by a coreduction method. The nanostructures were examined in detail at different reduction reaction periods, revealing the competitive role of each reduction reaction and the successful increase in Pt surface area. The coreduction method contributed to enhancing the catalytic applications of the nanoparticles.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Crystallography
Yoshitaka Koseki, Yoshikazu Ikuta, Farsai Taemaitree, Nozomi Saito, Ryuju Suzuki, Anh Thi Ngoc Dao, Tsunenobu Onodera, Hidetoshi Oikawa, Hitoshi Kasai
Summary: The study fabricated pure drug nanocrystals using the ultrasound-assisted reprecipitation method, showing higher cytostatic activity against cancer cells, demonstrating the potential of fabricating carrier-free drug nanoparticles.
JOURNAL OF CRYSTAL GROWTH
(2021)
Article
Nanoscience & Nanotechnology
Qiang Zhang, Han Wen, Kiri Watanabe, Ibuki Kotani, Monica Ricci, Beatrice Fortuni, Anh Thi Ngoc Dao, Akito Masuhara, Kenji Hirai, Hitoshi Kasai, Tomoko Inose, Hiroshi Uji-i
ACS APPLIED NANO MATERIALS
(2020)
Meeting Abstract
Chemistry, Multidisciplinary
Anh Dao, Hitoshi Kasai
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Biochemistry & Molecular Biology
Goji Y. Shangkum, Patchanee Chammingkwan, Dai X. Trinh, Toshiaki Taniike
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)