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Seki R, Kido H, Ko K, Imoto K, Miura H, Shishido T, Nakao Y. Rhodium/Indium Heterobimetallic Alloy as an Effective Catalyst for Reductive C(sp 3)─O Silylation of Ethers with Chlorosilanes. Angew Chem Int Ed Engl 2025:e202505028. [PMID: 40331520 DOI: 10.1002/anie.202505028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2025] [Revised: 04/12/2025] [Accepted: 05/07/2025] [Indexed: 05/08/2025]
Abstract
C(sp3)─O bonds are ubiquitous in natural and synthetic small molecules as well as polymers. The methodology for functionalizing C(sp3)─O bonds is of great importance for reforming these molecular structures into high-value-added chemical feedstocks. Here, we describe the reductive C(sp3)─O bond silylation of ethers with chlorosilanes and magnesium reductants by cooperative rhodium and indium catalysis. This methodology allows the incorporation of silyl moieties into the C(sp3)─O bond of various unactivated cyclic and acyclic alkyl ethers using chlorotriorganosilanes. Not only the mixture of rhodium complex with indium reagent but also rhodium nanoparticles supported on indium oxide showed high catalytic activity, indicating a remarkable cooperative effect by the two metals. Notably, in both cases, the generation of rhodium/indium heterobimetallic alloy nanoparticles was revealed by mechanistic studies including XRD, XAS, and TEM imaging. This research advances the development of heterogeneous nanoparticle catalysts as an option to enable organic transformations that have not yet been achieved using homogeneous catalysts.
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Affiliation(s)
- Rin Seki
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Haruka Kido
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kana Ko
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Kaoru Imoto
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Hiroki Miura
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Tetsuya Shishido
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Yoshiaki Nakao
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
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Khaleghi N, Mojtabapour Z, Rashvandi Z, Mohammadi A, Forouzandeh-Malati M, Ganjali F, Zarei-Shokat S, Kashtiaray A, Taheri-Ledari R, Maleki A. Fast synthesis of [1,2,3]-triazole derivatives on a Fe/Cu-embedded nano-catalytic substrate. NANOSCALE ADVANCES 2023; 5:4911-4924. [PMID: 37705809 PMCID: PMC10496887 DOI: 10.1039/d3na00326d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 08/06/2023] [Indexed: 09/15/2023]
Abstract
Triazoles are biologically important compounds that play a crucial role in biomedical applications. In this study, we present an innovative and eco-friendly nanocatalyst system for synthesizing compounds via the click reaction. The system is composed of Arabic gum (AG), iron oxide magnetic nanoparticles (Fe3O4 MNPs), (3-chloropropyl) trimethoxysilane (CPTMS), 2-aminopyridine (AP), and Cu(i) ions. Using AP as an anchor for Cu(i) ions and Fe3O4 MNPs allows facile separation using an external magnet. The hydrophilic nature of the Fe3O4@AG/AP-Cu(i) nanocomposite makes it highly efficient in water as a green solvent. The highest reaction efficiency (95.0%) was achieved in H2O solvent with 50.0 mg of nanocatalyst for 60 min at room temperature. The reaction yield remained consistent for six runs, demonstrating the stability and effectiveness of the catalyst.
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Affiliation(s)
- Nima Khaleghi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Zahrasadat Mojtabapour
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Zahra Rashvandi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Adibeh Mohammadi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Mohadeseh Forouzandeh-Malati
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Fatemeh Ganjali
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Simindokht Zarei-Shokat
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Amir Kashtiaray
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Reza Taheri-Ledari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran +98 2173021584 +98 21 77240640-50
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Mu D, Li Z, Yu S, Liu S. Wastewater treatment via hydro-de-heteroatoms using hydrogen donors. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Lan H, Liu Y, Mao Y, Han J, Wang Y, Wang Y, Wang L. Rational design of hydrogen bonds for driving thermo-responsive phase transition and assembly behavior of block copolymer in water. Polym Chem 2022. [DOI: 10.1039/d1py01578h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen bonding interactions were intensified in the present study by adjusting the chain architectures, which provided a sufficient driving force for UCST phase transition in pure water.
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Affiliation(s)
- Huiling Lan
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang, China
| | - Yuanyuan Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang, China
| | - Yanli Mao
- Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, 467036 Pingdingshan, China
| | - Juan Han
- School of Food and Biological Engineering, Jiangsu University, 212013 Zhenjiang, China
| | - Yu Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang, China
| | - Yun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang, China
| | - Lei Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang, China
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Abstract
Four vinyl polymer gels (VPGs) were synthesized by free radical polymerization of divinylbenzene, ethane-1,2-diyl dimethacrylate, and copolymerization of divinylbenzene with styrene, and ethane-1,2-diyl dimethacrylate with methyl methacrylate, as supports for palladium nanoparticles. VPGs obtained from divinylbenzene and from divinylbenzene with styrene had spherical shapes while those obtained from ethane-1,2-diyl dimethacrylate and from ethane-1,2-diyl dimethacrylate with methyl methacrylate did not have any specific shapes. Pd(OAc)2 was impregnated onto VPGs and reduced to form Pd0 nanoparticles within VPGs. The structures of Pd0-loaded VPGs were analyzed by XRD, TEM, and nitrogen gas adsorption. Pd0-loaded VPGs had nanocrystals of Pd0 within and on the surface of the polymeric supports. Pd0/VPGs efficiently catalyzed the oxidation/disproportionation of benzyl alcohol into benzaldehyde/toluene, where activity and selectivity between benzaldehyde and toluene varied, depending on the structure of VPG and the weight percentage loading of Pd0. The catalysts were stable and Pd leaching to liquid phase did not occur. The catalysts were separated and reused for five times without any significant decrease in the catalytic activity.
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