1
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Patil RD, Pratihar S. Ruthenium(II)-Catalyzed Hydrogenation and Tandem (De)Hydrogenation via Metal-Ligand Cooperation: Base- and Solvent-Assisted Switchable Selectivity. J Org Chem 2024; 89:1361-1378. [PMID: 36283058 DOI: 10.1021/acs.joc.2c01965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A versatile, selective, solvent (methanol vs ethanol)- and base (potassium vs lithium carbonate)-assisted switchable synthesis of saturated ketone and α-methyl saturated ketone from α,β-unsaturated ketone is developed. Mechanistic aspects, evaluated from spectroscopic studies, in situ monitoring of the reaction progress, control studies, and labeling studies, further indicate the involvement of a tandem dehydrogenation-condensation-hydrogenation sequence in the reaction, in which the interconvertible coordination mode (imino N → Ru and amido N-Ru) of coordinated imidazole with Ru(II)-para-cymene is crucial, without which the efficiency and selectivity of the catalyst are completely lost. The catalyst demonstrates good efficiency, selectivity, and functional group tolerance and displays a broad scope (69 examples) for monomethylation and hydrogenation of unsaturated chalcones, double methylation of ketones, and N-methylation of amines.
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Affiliation(s)
- Rahul Daga Patil
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Inorganic Materials and Catalysis Division, CSIR-Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
| | - Sanjay Pratihar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Inorganic Materials and Catalysis Division, CSIR-Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
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2
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Yamauchi Y, Mondori Y, Uetake Y, Takeichi Y, Kawakita T, Sakurai H, Ogoshi S, Hoshimoto Y. Reversible Modulation of the Electronic and Spatial Environment around Ni(0) Centers Bearing Multifunctional Carbene Ligands with Triarylaluminum. J Am Chem Soc 2023. [PMID: 37467307 PMCID: PMC10401715 DOI: 10.1021/jacs.3c06267] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Designing and modulating the electronic and spatial environments surrounding metal centers is a crucial issue in a wide range of chemistry fields that use organometallic compounds. Herein, we demonstrate a Lewis-acid-mediated reversible expansion, contraction, and transformation of the spatial environment surrounding nickel(0) centers that bear N-phosphine oxide-substituted N-heterocyclic carbenes (henceforth referred to as (S)PoxIms). Reaction between tetrahedral (syn-κ-C,O-(S)PoxIm)Ni(CO)2 and Al(C6F5)3 smoothly afforded heterobimetallic Ni/Al species such as trigonal-planar {κ-C-Ni(CO)2}(μ-anti-(S)PoxIm){κ-O-Al(C6F5)3} via a complexation-induced rotation of the N-phosphine oxide moieties, while the addition of 4-dimethylaminopyridine resulted in the quantitative regeneration of the former Ni complexes. The corresponding interconversion also occurred between (SPoxIm)Ni(η2:η2-diphenyldivinylsilane) and {κ-C-Ni(η2:η2-diene)}(μ-anti-SPoxIm){κ-O-Al(C6F5)3} via the coordination and dissociation of Al(C6F5)3. The shape and size of the space around the Ni(0) center was drastically changed through this Lewis-acid-mediated interconversion. Moreover, the multinuclear NMR, IR, and XAS analyses of the aforementioned carbonyl complexes clarified the details of the changes in the electronic states on the Ni centers; i.e., the electron delocalization was effectively enhanced among the Ni atom and CO ligands in the heterobimetallic Ni/Al species. The results presented in this work thus provide a strategy for reversibly modulating both the electronic and spatial environment of organometallic complexes, in addition to the well-accepted Lewis-base-mediated ligand-substitution methods.
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Affiliation(s)
- Yasuhiro Yamauchi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yutaka Mondori
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuta Uetake
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
| | - Yasuo Takeichi
- Department of Applied Physics, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takahiro Kawakita
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hidehiro Sakurai
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yoichi Hoshimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
- Center for Future Innovation (CFi), Division of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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3
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Lin WS, Kuwata S. Recent Developments in Reactions and Catalysis of Protic Pyrazole Complexes. Molecules 2023; 28:molecules28083529. [PMID: 37110763 PMCID: PMC10143336 DOI: 10.3390/molecules28083529] [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: 03/16/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Protic pyrazoles (N-unsubstituted pyrazoles) have been versatile ligands in various fields, such as materials chemistry and homogeneous catalysis, owing to their proton-responsive nature. This review provides an overview of the reactivities of protic pyrazole complexes. The coordination chemistry of pincer-type 2,6-bis(1H-pyrazol-3-yl)pyridines is first surveyed as a class of compounds for which significant advances have made in the last decade. The stoichiometric reactivities of protic pyrazole complexes with inorganic nitrogenous compounds are then described, which possibly relates to the inorganic nitrogen cycle in nature. The last part of this article is devoted to outlining the catalytic application of protic pyrazole complexes, emphasizing the mechanistic aspect. The role of the NH group in the protic pyrazole ligand and resulting metal-ligand cooperation in these transformations are discussed.
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Affiliation(s)
- Wei-Syuan Lin
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 E4-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Shigeki Kuwata
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu 525-8577, Shiga, Japan
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4
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Zhang J, Lei P, Yu D, Li Y, Zhong M, Shen W, Guo S. Oxidative Cleavage of β-O-4 Linkage in Lignin via Co Nanoparticles Embedded in 3DNG as Catalyst. Chemistry 2023; 29:e202203144. [PMID: 36408758 DOI: 10.1002/chem.202203144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/15/2022] [Accepted: 11/20/2022] [Indexed: 11/22/2022]
Abstract
The cleavage of β-O-4 linkage in lignin is one of the key steps for oxidative conversion of lignin to low-molecular-weight aromatics. Herein, Co nanoparticles embedded in three-dimensional network of nitrogen-doped graphene (Co/NG@3DNG-X) were prepared through an immersion-pyrolysis procedure, in which X denotes the pyrolysis temperature. The detailed characterization of Co/NG@3DNG-X shows that the Co nanoparticles are coated with a few layers of nitrogen-doped graphene (NG) sheets that are further embedded in 3DNG matrix. The catalytic activities of the Co/NG@3DNG-X for the oxidative cleavage of β-O-4 linkage in lignin model compounds with O2 as oxidant are explored. It is demonstrated that catalytic activities of as-prepared Co/NG@3DNG-X can be tuned by varying the pyrolysis condition, and the Co/NG@3DNG-900 shows the highest catalytic activity, which is attributed to the enriched Co-Nx species, the strong surface basicity, the high specific surface and the mesoporous motif of 3DNG network. More pronouncedly, the Co/NG@3DNG-900 can also effectively catalyze the oxidative cleavage of organosolv lignin, generating certain monomeric aromatics. Additionally, the intrinsic magnetic property of Co nanoparticles makes the Co/NG@3DNG-X be easily recovered from the reaction mixture, and the as-coated thin NG layer can protect Co nanoparticle from oxidation condition, which putting together afford the Co/NG@3DNG-X with good reusability and stability.
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Affiliation(s)
- Jiali Zhang
- Department of Electronic Engineering, School of Electronic Information and Electric Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Puyi Lei
- Department of Electronic Engineering, School of Electronic Information and Electric Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Daobo Yu
- Department of Electronic Engineering, School of Electronic Information and Electric Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Yanfang Li
- Department of Electronic Engineering, School of Electronic Information and Electric Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Min Zhong
- Department of Electronic Engineering, School of Electronic Information and Electric Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Wenzhuo Shen
- Department of Electronic Engineering, School of Electronic Information and Electric Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Shouwu Guo
- Department of Electronic Engineering, School of Electronic Information and Electric Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
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5
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Kasera A, Biswas JP, Ali Alshehri A, Ahmed Al-Thabaiti S, Mokhtar M, Maiti D. Transition metal pincer complexes: A series of potential catalysts in C H activation reactions. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Barranco S, Pérez-Temprano MH. Merging homogeneous transition metal catalysis and hydrogen isotope exchange. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2023. [DOI: 10.1016/bs.adomc.2022.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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7
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Koppaka A, Kirkland JK, Periana RA, Ess DH. Experimental Demonstration and Density Functional Theory Mechanistic Analysis of Arene C-H Bond Oxidation and Product Protection by Osmium Tetroxide in a Strongly Basic/Nucleophilic Solvent. J Org Chem 2022; 87:13573-13582. [PMID: 36191170 DOI: 10.1021/acs.joc.2c01159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reactions that result in the oxy-functionalization of sp2 C-H bonds to give phenols are relatively rare. Here we report experiments and density functional theory (DFT) calculations that demonstrate selective C-H bond hydroxylation of nitroarenes to their corresponding mono-phenoxide as the exclusive product using OsO4 in a highly basic solvent mixture of water, hydroxide, and pyridine. DFT calculations using a mixed explicit/continuum solvent approach indicate that there is likely a mixture of OsO4-hydroxide/pyridine ground-state structures that have competitive reactivity and that the mechanism involves the nucleophilic addition of an anionic metal-oxo species to the arene followed by a hydride transfer process that is different from the standard [3 + 2] mechanism often invoked for the OsO4 oxidation of σ and π bonds. This work demonstrates the utility of using a strongly basic solvent for C-H bond oxidation reactions as this effectively converts any reactive phenolic product into the corresponding phenoxide, which is protected and essentially inert to further oxidation by the nucleophilic metal-oxo species.
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Affiliation(s)
- Anjaneyulu Koppaka
- The Scripps Energy and Materials Center, Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458, United States
| | - Justin K Kirkland
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Roy A Periana
- The Scripps Energy and Materials Center, Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458, United States
| | - Daniel H Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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8
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Patil RD, Dutta M, Pratihar S. Hydrogenation Involving Two Different Proton- and Hydride-Transferring Reagents through Metal–Ligand Cooperation: Mechanism and Scope. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rahul Daga Patil
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Inorganic Materials and Catalysis Division, CSIR─Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
| | - Manali Dutta
- Department of Chemical Sciences, Tezpur University, Tezpur 784028, Assam, India
| | - Sanjay Pratihar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Inorganic Materials and Catalysis Division, CSIR─Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
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9
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Seth K. Recent progress in rare-earth metal-catalyzed sp 2 and sp 3 C–H functionalization to construct C–C and C–heteroelement bonds. Org Chem Front 2022. [DOI: 10.1039/d1qo01859k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The review presents rare-earth metal-catalyzed C(sp2/sp3)–H functionalization accessing C–C/C–heteroatom bonds and olefin (co)polymerization, highlighting substrate scope, mechanistic realization, and origin of site-, enantio-/diastereo-selectivity.
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Affiliation(s)
- Kapileswar Seth
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) – Guwahati, Sila Katamur, Changsari, Kamrup 781101, Assam, India
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10
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Pearce BH, Joseph MC, Nkabyo HA, Luckay RC. Pincer-like pyrazole- and imidazole-pyridinyl compounds: Synthesis, characterisation, crystallographic and computational investigation. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Deolka S, Fayzullin RR, Khaskin E. Bulky PNP ligands blocking metal-ligand cooperation allow for isolation of Ru(0), and lead to catalytically active Ru complexes in acceptorless alcohol dehydrogenation. Chemistry 2021; 28:e202103778. [PMID: 34741487 DOI: 10.1002/chem.202103778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Indexed: 11/12/2022]
Abstract
We synthesized two 4Me-PNP ligands which block metal-ligand cooperation (MLC) with the Ru center and compared their Ru complex chemistry to their two traditional analogues used in acceptorless alcohol dehydrogenation catalysis. The corresponding 4Me-PNP complexes, which do not undergo dearomatization upon addition of base, allowed us to obtain rare, albeit unstable, 16 electron mono CO Ru(0) complexes. Reactivity with CO and H 2 allows for stabilization and extensive characterization of bis CO Ru(0) 18 electron and Ru(II) cis and trans dihydride species that were also shown to be capable of C(sp2)-H activation. Reactivity and catalysis are contrasted to non-methylated Ru(II) species, showing that an MLC pathway is not necessary, with dramatic differences in outcomes during catalysis between i Pr and t Bu PNP complexes within each of the 4Me and non-methylated backbone PNP series being observed. Unusual intermediates are characterized in one of the new and one of the traditional complexes, and a common catalysis deactivation pathway was identified.
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Affiliation(s)
- Shubham Deolka
- Okinawa Institute of Science and Technology Graduate University, Chemistry, JAPAN
| | - Robert R Fayzullin
- Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific Center of Russian Academy of Sciences: Institut organicheskoj i fizicheskoj khimii imeni A E Arbuzova KazNC RAN, Organic and Physical Chemistry, RUSSIAN FEDERATION
| | - Eugene Khaskin
- Okinawa Institute of Science and Technology Graduate University, Chemistry, 1919-1 Tancha, 904-0495, Onna, JAPAN
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12
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Song W, Song M, Jiang X, Yi X, Lai W. Hydrolytic cleavage of lignin derived C-O bonds by acid/base catalysis in water. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-021-01990-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Su XL, Jiang SP, Ye L, Xu GX, Chen JJ, Gu QS, Li ZL, Liu XY. A general copper-catalyzed radical C(sp3)−C(sp2) cross-coupling to access 1,1-diarylalkanes under ambient conditions. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Scalambra F, Imberti S, Holzmann N, Bernasconi L, Romerosa A. Neutron Scattering Techniques for Studying Metal Complexes in Aqueous Solution. ACS OMEGA 2021; 6:1751-1757. [PMID: 33521416 PMCID: PMC7841769 DOI: 10.1021/acsomega.0c05030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Neutron scattering combined with ab initio calculations provides a powerful tool for studying metal complexes in different solvents and, particularly, in water. The majority of traditional characterization techniques in catalysis provide only limited information on homogeneous catalytic processes. Neutron scattering, on the other hand, thanks to its sensitivity to hydrogen atoms, and therefore water molecules, can be used to build detailed models of reaction paths and to observe, at a molecular level, the influence of solvent molecules on a catalytic process. In this Mini-Review we describe several examples on how neutron scattering combined with ab initio calculations can be used to examine the nature of the interaction of water molecules with catalytically active metal complexes in solution.
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Affiliation(s)
- Franco Scalambra
- Área
de Química Inorgánica-CIESOL, Universidad de Almería, 04120 Almería, Spain
| | - Silvia Imberti
- Global
Journals Development, ACS International
Ltd., Oxford OX2 0QS, United Kingdom
| | - Nicole Holzmann
- Scientific
Computing Department, STFC Rutherford Appleton
Laboratory, Harwell Oxford, Didcot OX11 0QX U.K.
| | - Leonardo Bernasconi
- Center
for Research Computing, University of Pittsburgh, 4420 Bayard Street, Pittsburgh, Pennsylvania 15260, United States
| | - Antonio Romerosa
- Área
de Química Inorgánica-CIESOL, Universidad de Almería, 04120 Almería, Spain
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15
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Chatterjee B, Chang W, Werlé C. Molecularly Controlled Catalysis – Targeting Synergies Between Local and Non‐local Environments. ChemCatChem 2020. [DOI: 10.1002/cctc.202001431] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Basujit Chatterjee
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
- Ruhr University Bochum Universitätsstr. 150 44801 Bochum Germany
| | - Wei‐Chieh Chang
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
- Ruhr University Bochum Universitätsstr. 150 44801 Bochum Germany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy Conversion Stiftstr. 34–36 45470 Mülheim an der Ruhr Germany
- Ruhr University Bochum Universitätsstr. 150 44801 Bochum Germany
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16
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Ogo S, Minh LTT, Kikunaga T, Ando T, Matsumoto T, Yatabe T, Kato K. Direct Synthesis of Hydrogen Peroxide in Water by Means of a Rh-Based Catalyst. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00565] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Seiji Ogo
- Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Le Tu Thi Minh
- Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takahiro Kikunaga
- Mitsubishi Gas Chemical Company Inc., Marunouchi,
Chiyoda-ku, Tokyo 100-8324, Japan
| | - Tatsuya Ando
- Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takahiro Matsumoto
- Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi 332-0012, Japan
| | - Takeshi Yatabe
- Center for Small Molecule Energy, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenji Kato
- Mitsubishi Gas Chemical Company Inc., Marunouchi,
Chiyoda-ku, Tokyo 100-8324, Japan
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17
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Zhu G, Shi S, Zhao L, Liu M, Gao J, Xu J. Catalytic Activation of Carbon–Hydrogen Bonds in Lignin Linkages over Strong-Base-Modified Covalent Triazine Frameworks for Lignin Oxidative Cleavage. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00247] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Guozhi Zhu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Song Shi
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Li Zhao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Meng Liu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Jin Gao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Jie Xu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
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18
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Shahsavari HR, Babadi Aghakhanpour R, Biglari A, Niazi M, Mastrorilli P, Todisco S, Gallo V, Lalinde E, Moreno MT, Giménez N, Halvagar MR. C(sp 2)–C(sp 2) Reductive Elimination from a Diarylplatinum(II) Complex Induced by a S–S Bond Oxidative Addition at Room Temperature. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00771] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hamid R. Shahsavari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Reza Babadi Aghakhanpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Abbas Biglari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Maryam Niazi
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | | | | | - Vito Gallo
- DICATECh, Politecnico di Bari, I-70125 Bari, Italy
| | - Elena Lalinde
- Departamento de Química-Centro de Síntesis Química de La Rioja (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
| | - M. Teresa Moreno
- Departamento de Química-Centro de Síntesis Química de La Rioja (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
| | - Nora Giménez
- Departamento de Química-Centro de Síntesis Química de La Rioja (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
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19
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Sharma D, Bulusheva LG, Bulushev DA, Gupta N. The synthesis of biphenyl through C–H bond activation in benzene over a Pd catalyst supported on graphene oxide. NEW J CHEM 2020. [DOI: 10.1039/d0nj02230f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This is the first report on carbon–hydrogen (C–H) bond activation in benzene over a palladium catalyst supported on graphene oxide (GO) leading to the sole formation of biphenyl with a yield of 78%.
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Affiliation(s)
- Deepika Sharma
- School of Chemistry
- Faculty of Sciences
- Shoolini University
- Solan (H.P.)
- India
| | - Lyubov G. Bulusheva
- Nikolaev Institute of Inorganic Chemistry
- Novosibirsk 630090
- Russia
- Novosibirsk State University
- Novosibirsk 630090
| | | | - Neeraj Gupta
- School of Chemistry
- Faculty of Sciences
- Shoolini University
- Solan (H.P.)
- India
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20
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Guerra RB, Huamaní LSC, Tenorio JC, Guimarães WM, Bonacin JA, Barboza Formiga AL. Analysis of solvent-accessible voids and proton-coupled electron transfer of 2,6-bis(1H-imidazol-2-yl)pyridine and its hydrochloride. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:1359-1371. [PMID: 31589152 DOI: 10.1107/s2053229619011951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 08/29/2019] [Indexed: 11/11/2022]
Abstract
The crystal structures of the solid form of solvated 2,6-bis(1H-imidazol-2-yl)pyridine (H2dimpy) trihydrate, C11H9N5·3H2O·[+solvent], I, and its hydrate hydrochloride salt 2-[6-(1H-imidazol-2-yl)pyridin-2-yl]-1H-imidazol-3-ium chloride trihydrate, C11H10N5+·Cl-·3H2O, II, are reported and analysed in detail, along with potentiometric and spectrophotometric titrations for evaluation of the acid-base equilibria and proton-coupled electron-transfer reactions. Compound I crystallizes in the high-symmetry trigonal space group P3221 with an atypical formation of solvent-accessible voids, as a consequence of the 32 screw axis in the crystallographic c-axis direction, which are probably occupied by uncharacterized disordered solvent molecules. Additionally, the trihydrated chloride salt crystallizes in the conventional monoclinic space group P21/c without the formation of solvent-accessible voids. The acid-base equilibria of H2dimpy were studied by potentiometric and spectrophotometric titrations, and the results suggest the formation of H3dimpy+ (pKa1 = 5.40) and H4dimpy2+ (pKa2 = 3.98), with the electrochemical behaviour of these species showing two consecutive irreversible proton-coupled electron-transfer reactions. Density functional theory (DFT) calculations corroborate the interpretation of the experimental results and support the assignment of the electrochemical behaviour.
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Affiliation(s)
- Renan B Guerra
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - Luis S C Huamaní
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - Juan C Tenorio
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - Willian M Guimarães
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - Juliano A Bonacin
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - André Luiz Barboza Formiga
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
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21
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Li H, Song G. Ru-Catalyzed Hydrogenolysis of Lignin: Base-Dependent Tunability of Monomeric Phenols and Mechanistic Study. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00556] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Helong Li
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, People’s Republic of China
| | - Guoyong Song
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, People’s Republic of China
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22
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Scalambra F, Holzmann N, Bernasconi L, Imberti S, Romerosa A. The Interaction of Water with cis
and trans
{Ru(bpy)2
(PTA)2
}2+
(PTA = 1,3,5-Triaza-7-phosphaadamantane) Studied by Neutron Scattering and Ab Initio Calculations. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n Almería Spain
| | - Nicole Holzmann
- Scientific Computing Department; STFC Rutherford Appleton Laboratory; Harwell Oxford Didcot OX11 0QX UK
| | - Leonardo Bernasconi
- Center for Research Computing; University of Pittsburgh; 312 Schenley Place, 4420 Bayard Street Pittsburgh PA 15260 USA
| | - Silvia Imberti
- ISIS Neutron and Muon Source; STFC Rutherford Appleton Laboratory; Harwell Oxford Didcot OX11 0QX UK
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n Almería Spain
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23
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Viere EJ, Kuhn AE, Roeder MH, Piro NA, Kassel WS, Dudley TJ, Paul JJ. Spectroelectrochemical studies of a ruthenium complex containing the pH sensitive 4,4'-dihydroxy-2,2'-bipyridine ligand. Dalton Trans 2018; 47:4149-4161. [PMID: 29473071 DOI: 10.1039/c7dt04554a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Attaining high oxidation states at the metal center of transition metal complexes is a key design principle for many catalytic processes. One way to support high oxidation state chemistry is to utilize ligands that are electron-donating in nature. Understanding the structural and electronic changes of metal complexes as higher oxidation states are reached is critical towards designing more robust catalysts that are able to turn over at high rates without decomposing. To this end, we report herein the changes in structural and electronic properties as [Ru(bpy)2(44'bpy(OH)2)]2+ is oxidized to [Ru(bpy)2(44'bpy(OH)2)]3+ (bpy = 2,2'-bipyridine; 44'bpy(OH)2 = 4,4'-dihydroxy-2,2'-bipyridine). The 44'bpy(OH)2 ligand is a pH-dependent ligand where deprotonation of the hydroxyl groups leads to significant electronic donation to the metal center. A Pourbaix Diagram of the complex reveals a pH independent reduction potential below pH = 2.0 for the Ru3+/2+ process at 0.91 V vs. Ag/AgCl. Above pH = 2.0, pH dependence is observed with a decrease in reduction potential until pH = 6.8 where the complex is completely deprotonated, resulting in a reduction potential of 0.62 V vs. Ag/AgCl. Spectroelectrochemical studies as a function of pH reveal the disappearance of the Metal to Ligand Charge Transfer (MLCT) or Mixed Metal-Ligand to Charge Transfer bands upon oxidation and the appearance of a new low energy band. DFT calculations for this low energy band were carried out using both B3LYP and M06-L functionals for all protonation states and suggest that numerous new transition types occur upon oxidation to Ru3+.
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Affiliation(s)
- Erin J Viere
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Ashley E Kuhn
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Margaret H Roeder
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Nicholas A Piro
- Department of Chemistry, Albright College, 1621 N. 13th Street, Reading, PA 19604, USA
| | - W Scott Kassel
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Timothy J Dudley
- Math, Science and Technology Department, University of Minnesota Crookston, 2900 University Ave., Crookston, MN 56716, USA
| | - Jared J Paul
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
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24
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Li L, Luo Q, Cui H, Li R, Zhang J, Peng T. Air-stable Ruthenium(II)-NNN Pincer Complexes for the Efficient Coupling of Aromatic Diamines and Alcohols to 1H
-benzo[d
]imidazoles with the Liberation of H2. ChemCatChem 2018. [DOI: 10.1002/cctc.201800017] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Lin Li
- College of Chemistry&Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Qi Luo
- College of Chemistry&Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Huahua Cui
- College of Chemistry&Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Renjie Li
- College of Chemistry&Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Jing Zhang
- College of Chemistry&Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
| | - Tianyou Peng
- College of Chemistry&Molecular Sciences; Wuhan University; Wuhan 430072 P.R. China
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25
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Atzrodt J, Derdau V, Kerr WJ, Reid M. Methoden der C-H-Funktionalisierung für den Wasserstoffisotopenaustausch. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201708903] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jens Atzrodt
- Isotope Chemistry and Metabolite Synthesis, Integrated Drug Discovery, Medicinal Chemistry; Industriepark Höchst, G876 65926 Frankfurt Deutschland
| | - Volker Derdau
- Isotope Chemistry and Metabolite Synthesis, Integrated Drug Discovery, Medicinal Chemistry; Industriepark Höchst, G876 65926 Frankfurt Deutschland
| | - William J. Kerr
- Department of Pure and Applied Chemistry, WestCHEM; University of Strathclyde; 295 Cathedral Street Glasgow Scotland G1 1XL Großbritannien
| | - Marc Reid
- Department of Pure and Applied Chemistry, WestCHEM; University of Strathclyde; 295 Cathedral Street Glasgow Scotland G1 1XL Großbritannien
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26
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Atzrodt J, Derdau V, Kerr WJ, Reid M. C-H Functionalisation for Hydrogen Isotope Exchange. Angew Chem Int Ed Engl 2018; 57:3022-3047. [PMID: 29024330 DOI: 10.1002/anie.201708903] [Citation(s) in RCA: 307] [Impact Index Per Article: 51.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Indexed: 11/06/2022]
Abstract
The various applications of hydrogen isotopes (deuterium, D, and tritium, T) in the physical and life sciences demand a range of methods for their installation in an array of molecular architectures. In this Review, we describe recent advances in synthetic C-H functionalisation for hydrogen isotope exchange.
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Affiliation(s)
- Jens Atzrodt
- Isotope Chemistry and Metabolite Synthesis, Integrated Drug Discovery, Medicinal Chemistry, Industriepark Höchst, G876, 65926, Frankfurt, Germany
| | - Volker Derdau
- Isotope Chemistry and Metabolite Synthesis, Integrated Drug Discovery, Medicinal Chemistry, Industriepark Höchst, G876, 65926, Frankfurt, Germany
| | - William J Kerr
- Department of Pure and Applied Chemistry, WestCHEM, University of Strathclyde, 295 Cathedral Street, Glasgow, Scotland, G1 1XL, UK
| | - Marc Reid
- Department of Pure and Applied Chemistry, WestCHEM, University of Strathclyde, 295 Cathedral Street, Glasgow, Scotland, G1 1XL, UK
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27
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Pankow RM, Ye L, Thompson BC. Copper catalyzed synthesis of conjugated copolymers using direct arylation polymerization. Polym Chem 2018. [DOI: 10.1039/c8py00913a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
As an effort to replace palladium catalysts, we report the first example of a Copper-catalyzed Direct Arylation Polymerization (DArP).
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Affiliation(s)
- Robert M. Pankow
- Department of Chemistry and Loker Hydrocarbon Research Institute
- University of Southern California
- Los Angeles
- USA
| | - Liwei Ye
- Department of Chemistry and Loker Hydrocarbon Research Institute
- University of Southern California
- Los Angeles
- USA
| | - Barry C. Thompson
- Department of Chemistry and Loker Hydrocarbon Research Institute
- University of Southern California
- Los Angeles
- USA
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28
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Walczak A, Stefankiewicz AR. pH-Induced Linkage Isomerism of Pd(II) Complexes: A Pathway to Air- and Water-Stable Suzuki–Miyaura-Reaction Catalysts. Inorg Chem 2017; 57:471-477. [DOI: 10.1021/acs.inorgchem.7b02711] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Anna Walczak
- Department
of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
- Centre for Advanced Technologies, Umultowska 89c, 61-614 Poznań, Poland
| | - Artur R. Stefankiewicz
- Department
of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
- Centre for Advanced Technologies, Umultowska 89c, 61-614 Poznań, Poland
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29
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Suna Y, Himeda Y, Fujita E, Muckerman JT, Ertem MZ. Iridium Complexes with Proton-Responsive Azole-Type Ligands as Effective Catalysts for CO 2 Hydrogenation. CHEMSUSCHEM 2017; 10:4535-4543. [PMID: 28985455 DOI: 10.1002/cssc.201701676] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 10/03/2017] [Indexed: 06/07/2023]
Abstract
Pentamethylcyclopentadienyl iridium (Cp*Ir) complexes with bidentate ligands consisting of a pyridine ring and an electron-rich diazole ring were prepared. Their catalytic activity toward CO2 hydrogenation in 2.0 m KHCO3 aqueous solutions (pH 8.5) at 50 °C, under 1.0 MPa CO2 /H2 (1:1) have been reported as an alternative to photo- and electrochemical CO2 reduction. Bidentate ligands incorporating an electron-rich diazole ring improved the catalytic performance of the Ir complexes compared to the bipyridine ligand. Complexes 2, 4, and 6, possessing both a hydroxy group and an uncoordinated NH group, which are proton-responsive and capable of generating pendent bases in basic media, recorded high initial turnover frequency values of 1300, 1550, and 2000 h-1 , respectively. Spectroscopic and computational investigations revealed that the reversible deprotonation changes the electronic properties of the complexes and causes interactions between pendent base and substrate and/or solvent water molecules, resulting in high catalytic performance in basic media.
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Affiliation(s)
- Yuki Suna
- Research Institute of Energy Frontier, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Yuichiro Himeda
- Research Institute of Energy Frontier, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Etsuko Fujita
- Chemistry Division, Brookhaven National Laboratory, Upton, NY, 11973-5000, USA
| | - James T Muckerman
- Chemistry Division, Brookhaven National Laboratory, Upton, NY, 11973-5000, USA
| | - Mehmed Z Ertem
- Chemistry Division, Brookhaven National Laboratory, Upton, NY, 11973-5000, USA
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30
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Rommel SA, Sorsche D, Fleischmann M, Rau S. Optical Sensing of Anions via Supramolecular Recognition with Biimidazole Complexes. Chemistry 2017; 23:18101-18119. [PMID: 28317177 DOI: 10.1002/chem.201605782] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Indexed: 12/30/2022]
Abstract
Phosphorescent metal complexes with peripheral N-H donor functionalities have attracted great attention as potential molecular sensing units for anionic species lately. In this contribution we discuss the development and potential of anion recognition and sensing features of recent examples of luminescent 2,2'-biimidazole complexes of ruthenium(II), iridium(III), osmium(II) and cobalt(III). The general dependency of photophysical features in these complexes regarding the acid-base chemistry of the peripheral N-H functionalities will be outlined as a basic requirement for optical ion recognition. Systematic strategies for the tuning and specific improvement by synthetic means will be discussed regarding recent reports. With respect to their distinct photophysical features, different transition metals are considered individually to demonstrate particular trends regarding ligand modification within the respective groups. In summary, this review elucidates the current state-of-the-art and future potential of the versatile class of 2,2'-biimidazole based sensor chromophores.
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Affiliation(s)
- Sebastian A Rommel
- Institute for Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Dieter Sorsche
- Institute for Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Maximilian Fleischmann
- Institute for Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Sven Rau
- Institute for Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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31
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Ellwanger MA, Steinhauer S, Golz P, Beckers H, Wiesner A, Braun-Cula B, Braun T, Riedel S. Taming the High Reactivity of Gold(III) Fluoride: Fluorido Gold(III) Complexes with N-Based Ligands. Chemistry 2017; 23:13501-13509. [PMID: 28759145 DOI: 10.1002/chem.201702663] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Indexed: 11/09/2022]
Abstract
The synthesis of [NMe4 ][AuF4 ] and [NEt4 ][AuF4 ], as well as an improved one-pot synthesis of Cs[AuF4 ], is reported. The new [AuF4 ]- salts were structurally characterized by single crystal X-ray diffraction, NMR spectroscopy, vibrational spectroscopy, and mass spectrometry. These salts are the first gold(III) fluoride salts that can be isolated in pure form and are convenient to be used in usual organic solvents for subsequent synthesis. The formation of molecular AuF3 complexes in solution is further reported, characterized as [F3 Au(NCCH3 )] at low temperature, as [F3 Au(py)] and a binuclear derivative which are stable at room temperature. The stability of these species in common organic solvents was investigated and they showed a satisfying stability.
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Affiliation(s)
- Mathias A Ellwanger
- Freie Universität Berlin, Institut für Chemie und Biochemie, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Simon Steinhauer
- Freie Universität Berlin, Institut für Chemie und Biochemie, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Paul Golz
- Freie Universität Berlin, Institut für Chemie und Biochemie, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Helmut Beckers
- Freie Universität Berlin, Institut für Chemie und Biochemie, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Anja Wiesner
- Freie Universität Berlin, Institut für Chemie und Biochemie, Fabeckstr. 34/36, 14195, Berlin, Germany
| | - Beatrice Braun-Cula
- Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Straße 2, 12489, Berlin, Germany
| | - Thomas Braun
- Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Straße 2, 12489, Berlin, Germany
| | - Sebastian Riedel
- Freie Universität Berlin, Institut für Chemie und Biochemie, Fabeckstr. 34/36, 14195, Berlin, Germany
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32
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García-Argüelles S, Ferrer ML, Iglesias M, Del Monte F, Gutiérrez MC. Study of Superbase-Based Deep Eutectic Solvents as the Catalyst in the Chemical Fixation of CO₂ into Cyclic Carbonates under Mild Conditions. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E759. [PMID: 28773128 PMCID: PMC5551802 DOI: 10.3390/ma10070759] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 06/28/2017] [Accepted: 06/29/2017] [Indexed: 12/05/2022]
Abstract
Superbases have shown high performance as catalysts in the chemical fixation of CO₂ to epoxides. The proposed reaction mechanism typically assumes the formation of a superbase, the CO₂ adduct as the intermediate, most likely because of the well-known affinity between superbases and CO₂, i.e., superbases have actually proven quite effective for CO₂ absorption. In this latter use, concerns about the chemical stability upon successive absorption-desorption cycles also merits attention when using superbases as catalysts. In this work, ¹H NMR spectroscopy was used to get further insights about (1) whether a superbase, the CO₂ adduct, is formed as an intermediate and (2) the chemical stability of the catalyst after reaction. For this purpose, we proposed as a model system the chemical fixation of CO₂ to epichlorohydrin (EP) using a deep eutectic solvent (DES) composed of a superbase, e.g., 2,3,4,6,7,8-hexahydro-1H-pyrimido[1,2-a]pyrimidine (TBD) or 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine (DBU), as a hydrogen acceptor and an alcohol as a hydrogen bond donor, e.g., benzyl alcohol (BA), ethylene glycol (EG), and methyldiethanolamine (MDEA), as the catalyst. The resulting carbonate was obtained with yields above 90% and selectivities approaching 100% after only two hours of reaction in pseudo-mild reaction conditions, e.g., 1.2 bars and 100 °C, and after 20 h if the reaction conditions of choice were even milder, e.g., 1.2 bars and 50 °C. These results were in agreement with previous works using bifunctional catalytic systems composed of a superbase and a hydrogen bond donor (HBD) also reporting good yields and selectivities, thus confirming the suitability of our choice to perform this study.
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Affiliation(s)
- Sara García-Argüelles
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
- Departamento de Tecnología Química y Energética, Tecnologia Química y Ambiental y Tecnología Mecánica y Química Analítica, Universidad Rey Juan Carlos, 28933 Madrid, Spain.
| | - Maria Luisa Ferrer
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
| | - Marta Iglesias
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
| | - Francisco Del Monte
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
| | - María Concepción Gutiérrez
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
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33
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Ru(II) complexes bearing 2,6-bis(benzimidazole-2-yl)pyridine ligands: A new class of catalysts for efficient dehydrogenation of primary alcohols to carboxylic acids and H2 in the alcohol/CsOH system. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.11.038] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Miller AJM. Controlling ligand binding for tunable and switchable catalysis: cation-modulated hemilability in pincer-crown ether ligands. Dalton Trans 2017; 46:11987-12000. [DOI: 10.1039/c7dt02156a] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The development of cation-responsive “pincer-crown ether” complexes featuring tunable hemilability is reviewed in the context of switchable and tunable catalysis.
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35
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Esteruelas MA, García-Yebra C, Martín J, Oñate E. mer, fac, and Bidentate Coordination of an Alkyl-POP Ligand in the Chemistry of Nonclassical Osmium Hydrides. Inorg Chem 2016; 56:676-683. [DOI: 10.1021/acs.inorgchem.6b02837] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Miguel A. Esteruelas
- Departamento de Química Inorgánica,
Instituto de Síntesis Química y Catálisis Homogénea
(ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Cristina García-Yebra
- Departamento de Química Inorgánica,
Instituto de Síntesis Química y Catálisis Homogénea
(ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Jaime Martín
- Departamento de Química Inorgánica,
Instituto de Síntesis Química y Catálisis Homogénea
(ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica,
Instituto de Síntesis Química y Catálisis Homogénea
(ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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36
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Charboneau DJ, Piro NA, Kassel WS, Dudley TJ, Paul JJ. Reprint of: Structural, electronic and acid/base properties of [Ru(bpy)(bpy(OH)2)2]2+ (bpy = 2,2′-bipyridine, bpy(OH)2= 4,4′-dihydroxy-2,2′-bipyridine). Polyhedron 2016. [DOI: 10.1016/j.poly.2016.05.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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Wang Q, Wu K, Yu Z. Ruthenium(III)-Catalyzed β-Alkylation of Secondary Alcohols with Primary Alcohols. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00130] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qingfu Wang
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian, Liaoning 116023, China
| | - Kaikai Wu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian, Liaoning 116023, China
| | - Zhengkun Yu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian, Liaoning 116023, China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China
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Semwal S, Choudhury J. Molecular Coordination-Switch in a New Role: Controlling Highly Selective Catalytic Hydrogenation with Switchability Function. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00150] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shrivats Semwal
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
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40
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Scalambra F, Serrano-Ruiz M, Nahim-Granados S, Romerosa A. Ruthenium Complexes Containing 2,2′-Bipyridine and 1,3,5-Triaza-7-phosphaadamantane. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501357] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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41
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Adam R, Alberico E, Baumann W, Drexler HJ, Jackstell R, Junge H, Beller M. NNP-Type Pincer Imidazolylphosphine Ruthenium Complexes: Efficient Base-Free Hydrogenation of Aromatic and Aliphatic Nitriles under Mild Conditions. Chemistry 2016; 22:4991-5002. [DOI: 10.1002/chem.201504709] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Indexed: 01/05/2023]
Affiliation(s)
- Rosa Adam
- Leibniz-Institut für Katalyse e.V.; Albert Einstein Str. 29a 18059 Rostock Germany
| | - Elisabetta Alberico
- Leibniz-Institut für Katalyse e.V.; Albert Einstein Str. 29a 18059 Rostock Germany
- Istituto di Chimica Biomolecolare; Consiglio Nazionale delle Ricerche; Tr. La Crucca 3 07100 Sassari Italy
| | - Wolfgang Baumann
- Leibniz-Institut für Katalyse e.V.; Albert Einstein Str. 29a 18059 Rostock Germany
| | - Hans-Joachim Drexler
- Leibniz-Institut für Katalyse e.V.; Albert Einstein Str. 29a 18059 Rostock Germany
| | - Ralf Jackstell
- Leibniz-Institut für Katalyse e.V.; Albert Einstein Str. 29a 18059 Rostock Germany
| | - Henrik Junge
- Leibniz-Institut für Katalyse e.V.; Albert Einstein Str. 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V.; Albert Einstein Str. 29a 18059 Rostock Germany
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42
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Liberman-Martin AL, Levine DS, Liu W, Bergman RG, Tilley TD. Biaryl Reductive Elimination Is Dramatically Accelerated by Remote Lewis Acid Binding to a 2,2′-Bipyrimidyl–Platinum Complex: Evidence for a Bidentate Ligand Dissociation Mechanism. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b01003] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Daniel S. Levine
- Department
of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
| | - Wenjun Liu
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Robert G. Bergman
- Department
of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
| | - T. Don Tilley
- Department
of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
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43
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Geri JB, Szymczak NK. A Proton-Switchable Bifunctional Ruthenium Complex That Catalyzes Nitrile Hydroboration. J Am Chem Soc 2015; 137:12808-14. [DOI: 10.1021/jacs.5b08406] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jacob B. Geri
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, Michigan 48109-1055, United States
| | - Nathaniel K. Szymczak
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, Michigan 48109-1055, United States
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Di Giuseppe A, Castarlenas R, Oro LA. Mechanistic considerations on catalytic H/D exchange mediated by organometallic transition metal complexes. CR CHIM 2015. [DOI: 10.1016/j.crci.2015.02.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Sementa L, Barcaro G, Fortunelli A. Analogy between homogeneous and heterogeneous catalysis by subnanometer metal clusters: Ethylene oxidation on Ag trimers supported on MgO(1 0 0). Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.10.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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Charboneau DJ, Piro NA, Kassel WS, Dudley TJ, Paul JJ. Structural, electronic and acid/base properties of [Ru(bpy)(bpy(OH)2)2]2+ (bpy=2,2′-bipyridine, bpy(OH)2=4,4′-dihydroxy-2,2′-bipyridine). Polyhedron 2015. [DOI: 10.1016/j.poly.2015.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Burgess SA, Bolaño T, Gunnoe TB, Sabat M, Myers WH. Synthesis of RhIIIAnilido, Hydroxide, and Methoxide Complexes. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403147] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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49
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Tridentate pyrrolylzinc compounds: Synthesis, structures, reactivities and catalytic cyclotrimerization reaction of isocyanate. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.11.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Gunanathan C, Milstein D. Bond activation and catalysis by ruthenium pincer complexes. Chem Rev 2014; 114:12024-87. [PMID: 25398045 DOI: 10.1021/cr5002782] [Citation(s) in RCA: 710] [Impact Index Per Article: 71.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Chidambaram Gunanathan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) , Bhubaneswar 751005, India
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