Article
Chemistry, Physical
David Tetour, Tomas Paska, Veronika Makova, Barbora Nikendey Holubova, Jana Karpiskova, Michal Rezanka, Jiri Brus, Jana Hodacova
Summary: Two hybrid organosilica materials containing bis-cinchonine-phthalazine bridging organic unit were synthesized and used as heterogenized ligands in catalysis of enantioselective Sharpless alkene dihydroxylation. The nanostructured material exhibited higher enantioselectivities than the bulk material and could be used at least five times without loss of enantioselectivity.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Zeyang Liu, Yongjie Wang, Kaihong Liu, Shanshan Wang, Haocheng Liao, Yuanli Zhu, Baoming Hou, Chunxia Tan, Guohua Liu
Summary: This study developed a cost-efficient hydration/asymmetric transfer hydrogenation (ATH) process for the synthesis of valuable chiral alcohols from alkynes, achieving good yields with up to 99% ee values. The immobilized Ru/diamine catalyst could be recycled at least three times in the sequential reaction system, demonstrating a general method for sustainable organic synthesis through one-pot asymmetric sequential catalysis.
FRONTIERS IN CHEMISTRY
(2021)
Review
Biochemistry & Molecular Biology
Anna Wolny, Anna Chrobok
Summary: Supported ionic liquid phases offer several advantages in catalysis, providing catalytic activity or efficient matrix and improving mass transport. Silica-based materials, due to their cost-efficiency and specific properties, are widely used in this field.
Article
Nanoscience & Nanotechnology
Miguel Sanchez-Fuente, Alberto Lopez-Magano, Alicia Moya, Ruben Mas-Balleste
Summary: Condensation of BINAPO-(PhCHO)(2) and 1,3,5-tris(4-aminophenyl)benzene(TAPB) leads to a new imine-based chiral organic material (COM) that can be post-functionalized through reductive transformation of imine linkers to amines. Although the imine-based material is not stable enough to be used as a heterogeneous catalyst, the reduced amine-linked framework can be efficiently utilized in asymmetric allylation of various aromatic aldehydes. The obtained yields and enantiomeric excesses are comparable to those observed for the molecular BINAP oxide catalyst, with the added advantage of recyclability offered by the amine-based material.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiao-Shan Lin, Yanzi Yu, Li-Peng Zhou, Lizhen He, Tianfeng Chen, Qing-Fu Sun
Summary: In this study, a ship-in-a-bottle synthetic strategy was used to enhance the stability and luminescence performance of LOPs by embedding them into mesoporous silica nanoparticles (MSNs). The biotin-modified hybrid material showed significantly enhanced fluorescence-imaging ability towards cancer cells.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Yuki Saito, Shu Kobayashi
Summary: The application of heterogeneous catalysts in continuous-flow enantioselective hydroacylation reactions was studied. Catalysts were prepared by mixing supports and rhodium complexes, and showed excellent activity and enantioselectivity. Under optimized conditions, the catalysts exhibited high turnover numbers and could be applied to various substrates. Furthermore, sequential-flow reactions with other heterogeneous catalysts were demonstrated for the synthesis of biologically active molecules and functional materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Yue Cao, Yong Wu, Yuanteng Zhang, Jing Zhou, Wei Xiao, Dong Gu
Summary: Mesoporous cobalt oxide as a catalyst shows excellent performance in the synthesis of N-heterocycles, with high turnover numbers and easy recyclability for at least six times. Comparative studies reveal that the high surface area of the catalyst plays a crucial role in catalytic reactivity.
Review
Chemistry, Multidisciplinary
Chun Xu, Chang Lei, Yue Wang, Chengzhong Yu
Summary: Dendritic mesoporous silica nanoparticles have attracted attention due to their wide applications, but the terminology used is ambiguous. This review provides a critical analysis of reported dendritic silica nanoparticles according to their structural classification, updating the understanding of their formation mechanisms and the control of structural parameters. The review also focuses on the applications of dendritic mesoporous nanoparticles in the biomedical field, offering new insights into the structure-property relationship.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Physical
Aniello Costantini, Valeria Califano
Summary: Lipases are essential enzymes involved in the hydrolysis of triacylglycerol into fatty acids and have versatile applications, including biodiesel production. To maintain their stability and activity, lipases need to be immobilized on insoluble supports, with mesoporous silica nanoparticles being a promising option due to their thermal and mechanical stability, controlled textural characteristics, and surface functionalization capabilities.
Article
Chemistry, Physical
Raoul D. Brand, Steffen A. Busche, Hans G. Boerner, Bernd M. Smarsly
Summary: The peptide-based catalyst is conveniently immobilized on different mesoporous silica supports through the ligation of tetrazine and norbornene via inverse electron-demand Diels-Alder reaction. The materials exhibit high catalytic activity in the continuous flow synthesis of n-butanal to ss-nitrostyrene with high yield and enantioselectivity.
Article
Chemistry, Physical
Chao Wang, Yan Wang, Xuelei Jia, Junrong Huang, Hengzhi You, Fen -Er Chen
Summary: The immobilization of recyclable Taniaphos/copper(I) complex on commercial accessible silica has been achieved using thiol-ene coupling reaction. The immobilization strategy and linker length significantly affect catalyst selectivities. Heterogeneous asymmetric allylic alkylation reactions involving organometallic reagents were successfully performed using this catalyst system, with up to 95% enantioselectivity and 96% yield for three types of cinnamyl bromide substrates. The catalyst exhibits good stability and cyclicity after five recycles, without loss of selectivity, and the products can be easily isolated with > 95% purity without chromatography purification.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Junwen Wang, Jun Li, Yan Wang, Sisi He, Hengzhi You, Fen -Er Chen
Summary: In this study, a polymer-supported chiral heterogeneous copper catalyst was reported, which demonstrated high reactivity and enantioselectivity in asymmetric conjugate addition reactions.
Article
Chemistry, Applied
Costanza Leonardi, Arianna Brandolese, Lorenzo Preti, Olga Bortolini, Eleonora Polo, Paolo Dambruoso, Daniele Ragno, Graziano Di Carmine, Alessandro Massi
Summary: This study presents a strategy for immobilizing chiral 2,3-bisaminocyclopropenium salt onto polystyrene and silica supports, and a procedure for converting it into cyclopropenimine superbase catalysts. The silica-supported cyclopropenimine showed superior stability and comparable efficiency in batch tests, and could be used as packing material for fixed-bed reactors. Continuous-flow experiments demonstrated satisfactory long-term stability and unaltered conversion efficiency and enantioselectivity.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Yuzhu Ma, Kun Lan, Borui Xu, Li Xu, Linlin Duan, Mengli Liu, Liang Chen, Tiancong Zhao, Jun-Ye Zhang, Zirui Lv, Ahmed A. Elzatahry, Xiaomin Li, Dongyuan Zhao
Summary: A novel method for synthesizing streamlined mesoporous nanotadpoles has been reported in this study, which exhibit large inner cavities, high surface areas, and uniform mesopore sizes. By loading Fe3O4 into the nanoparticles, H2O2-driven mesoporous nanomotors with outstanding directionality and a diffusion coefficient of 8.15 μm(2) s(-1) can be designed.
Article
Chemistry, Physical
Zuyun Yin, Jie Liu, Jianing Zhang, Xuebing Ma
Summary: In this paper, a simple and direct strategy for covalently anchoring (S)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl dioxide (BINAPO) to hollow mesoporous polystyrene nanospheres (HMPNs) is developed to fabricate HMPNs-supported BINAPO (HMPNs@BINAPO) via one-pot Friedel-Crafts alkylation. HMPNs@BINAPO possesses a nanoscale and spherical morphology with a thin and mesoporous shell suitable for fast mass transfer of reactants and products.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Analytical
Lei Zhao, Hanxin Zhou, Qinghai Zhou, Cheng Peng, Tanyu Cheng, Guohua Liu
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Multidisciplinary
Xi Liu, Yi Qin, Junlong Zhu, Xiaoli Zhao, Tanyu Cheng, Yanrong Jiang, Haitao Sun, Lin Xu
Summary: A series of TPA derivatives with different substituent groups were prepared and showed unique absorption and fluorescence characteristics due to the substituent effect. The presence of pyridine units in these derivatives enabled acid-induced tunable multicolor fluorescence emission, making them suitable for constructing stimuli-responsive fluorescent films and inks for inkjet printing.
CHINESE CHEMICAL LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Qinghui Ling, Tanyu Cheng, Shaoying Tan, Junhai Huang, Lin Xu
CHINESE CHEMICAL LETTERS
(2020)
Article
Chemistry, Physical
Fengwei Chang, Shitong Wang, Zhitong Zhao, Lijian Wang, Tanyu Cheng, Guohua Liu
Article
Chemistry, Physical
Shitong Wang, Chengyi Wang, Ning Lv, Chunxia Tan, Tanyu Cheng, Guohua Liu
Summary: A yolk-shell-structured bifunctional magnetic catalyst was successfully prepared in this study, enabling efficient aerobic oxysulfonylation reactions of aryl-substituted terminal alkynes and asymmetric transfer hydrogenation to chiral beta-hydroxysulfones with high catalytic efficiency and enantioselectivity. Furthermore, this magnetic catalyst can be conveniently recovered and recycled via an additional outer magnet.
Article
Chemistry, Applied
Hui Xu, Han Zhang, Chengyi Wang, Kang Chen, Guohua Liu, Chunxia Tan, Tanyu Cheng
Summary: In this study, a hemicyanine-based dual-modal probe for the detection of a nerve agent mimic has been developed, showing fast response, high selectivity, and excellent sensitivity. The probe-loaded test strips can sense DCNP vapor in low concentration and distinguish it from other nerve agent mimics visually and fluorescently.
Article
Chemistry, Multidisciplinary
Yilong Li, Chengyi Wang, Qipeng Chen, Hongyu Li, Yu Su, Tanyu Cheng, Guohua Liu, Chunxia Tan
Summary: The study developed a multiple continuous-flow system with two different catalysts packed in separate reactors, which boosted the reactivity and selectivity in a sequential enantioselective cascade reaction. This approach successfully provided chiral biarylols with enhanced yields and enantioselectivities, demonstrating the potential for scale-up preparation of optically pure organic molecules under environmentally-friendly conditions.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Chemistry, Applied
Yong Tang, Kaihong Liu, Ye Wu, Siyu Zhou, Tanyu Cheng, Guohua Liu
Summary: The development of cooperative catalysis is important for multi-step sequential enantioselective organic transformations. This study presents the design of an integrated Cu/bisoxazoline and Ru/diamine co-catalyst system for the direct preparation of 1,3-distereocentered beta-sulfonamido alcohols. The cascade reaction enables efficient and selective synthesis of chiral products.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Applied
Hui Xu, Guohua Shen, Cheng Peng, Xiumin Han, Liping Duan, Tanyu Cheng
Summary: A new fluorescence probe BDY-OH was developed for efficient detection of HSA, showing high signal to noise ratio and selectivity, and exhibited excellent recognition rate in clinical urine samples, suggesting great potential for early diagnosis of kidney related diseases.
Article
Chemistry, Organic
Ruixin Liu, Xiaojuan Liu, Tanyu Cheng, Yaofeng Chen
Summary: Alkynylsilanes are important organic compounds that can be synthesized through dehydrogenative coupling of hydrosilanes with terminal alkynes, and the use of organocalcium complexes in organic synthesis has been gaining increasing attention.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Dongfeng Yang, Chengyi Wang, Yu Wang, Guohua Liu, Tanyu Cheng, Rui Liu
Summary: A new method for the preparation of enantiomerically pure 1,4-oxazines via asymmetric transfer hydrogenation/cyclization enantio-relay process catalyzed by Ru and Au bimetallic catalysts has been developed. The reaction exhibits high stereoselectivity and enriches the understanding of gold catalysis from a mechanistic perspective.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Yongkang Song, Jian Wang, Shaomin Deng, Guohua Liu, Tanyu Cheng
Summary: Domino catalytic reactions are a powerful strategy for synthesizing complex and high-value compounds. In this study, a domino enantioselective Michael addition/cyclization process, catalyzed by inexpensive and readily available quinidine, was developed. The reaction proceeded smoothly under mild conditions at room temperature within 2 hours, affording chiral 1,4-dihydro-pyridine containing benzosultams in good yields (up to 95%) and excellent enantioselectivities (up to 99% ee).
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Organic
Chengyi Wang, Shaomin Deng, Rui Chen, Guohua Liu, Tanyu Cheng, Rui Liu
Summary: A mechanochemical asymmetric transfer hydrogenation (ATH) of diketones has been developed under solvent-free conditions with a ruthenium complex, leading to chiral 1,3-diol derivatives. This method offers advantages such as rapid reaction kinetics, no solvent requirement, and excellent enantioselectivity.
Article
Chemistry, Organic
Jijun Xu, Yi Li, Xuanyu Zhu, Shisong Lv, Yiming Xu, Tanyu Cheng, Guohua Liu, Rui Liu
Summary: We have developed a versatile platform for the synthesis of ketones containing tri-, di-, and monofluoromethyl using pyridinium-masked enol and blue light irradiation. By changing the F-source, α-trifluoromethyl ketones, α-difluoromethyl ketones, and α-monofluoromethyl ketones could be easily prepared in one step with moderate to excellent yields. This method also has potential applications for the synthesis of sulfonyl ketones.
Article
Chemistry, Organic
Min Zhou, Jing Li, Jie Cheng, Congwu Ge, Tanyu Cheng, Xike Gao
Summary: This study investigated NDI-based optically pure compounds, mesomers, and racemic mixtures, and their impact on molecule self-assembly, packing structures, and device performance. The UV-vis absorption spectra, cyclic voltammetry, circular dichroism, and organic field-effect transistor performance were analyzed to demonstrate the influence of chirality on these aspects. Mesomers and racemic mixtures showed better device performance than optically pure compounds, indicating the importance of chirality in controlling material properties.
CHINESE JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Yifan Sun, Ye Lv, Wei Li, Jinli Zhang, Yan Fu
Summary: In this study, PtRu electrocatalysts were fabricated on carbon paper via cyclic electrodeposition for the electrocatalytic hydrogenation (ECH) of phenol. The Pt3Ru3 catalyst exhibited excellent activity and stability for the conversion of phenol to cyclohexanol at ambient temperature and various current densities. The in situ Raman spectroscopy and kinetic study revealed the hydrogenation mechanism of phenol over Pt3Ru3 in acidic electrolyte, providing an effective electrochemical strategy for the facile construction of durable electrode materials and efficient phenol hydrogenation.
JOURNAL OF CATALYSIS
(2024)
Article
Chemistry, Physical
Amir Shahzad, Khezina Rafiq, Muhammad Zeeshan Abid, Naseem Ahmad Khan, Syed Shoaib Ahmad Shah, Raed H. Althomali, Abdul Rauf, Ejaz Hussain
Summary: Photocatalytic hydrogen production through water splitting is an effective method for meeting future energy demands. In this study, researchers synthesized a 1 % Ag2S/Cu2S co-doped CdZnS catalyst and found that it can produce hydrogen at a higher rate. The co-doping of Ag2S and Cu2S in the CdZnS catalyst showed a synergistic effect, with Ag2S promoting oxidation reactions and Cu2S promoting reduction reactions.
JOURNAL OF CATALYSIS
(2024)
