1
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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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2
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Recent progress in oxidation chemistry of high-valent ruthenium-oxo and osmium-oxo complexes and related species. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Fujimoto T, Ueda Y, Sugimoto H, Nakazawa J, Hikichi S, Itoh S. Alkane Oxidation with H2O2 Catalyzed by OsO4-carboxylate Adduct and Its Application to Heterogeneous Catalyst. CHEM LETT 2022. [DOI: 10.1246/cl.210751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tomohiro Fujimoto
- Department of Molecular Chemistry, Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka. Suita, Osaka 565-0871, Japan
| | - Yuta Ueda
- Department of Molecular Chemistry, Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka. Suita, Osaka 565-0871, Japan
| | - Hideki Sugimoto
- Department of Molecular Chemistry, Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka. Suita, Osaka 565-0871, Japan
| | - Jun Nakazawa
- Department of Material and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi. Kanagawa-ku, Yokohama, Kanagawa 221-8686, Japan
| | - Shiro Hikichi
- Department of Material and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi. Kanagawa-ku, Yokohama, Kanagawa 221-8686, Japan
| | - Shinobu Itoh
- Department of Molecular Chemistry, Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka. Suita, Osaka 565-0871, Japan
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4
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Fujimoto T, Hirata Y, Sugimoto H, Miyanishi M, Shiota Y, Yoshizawa K, Itoh S. Halide-Adducts of OsO4. Structure and Reactivity in Alcohol-Oxidation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210377] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tomohiro Fujimoto
- Department of Molecular Chemistry, Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yuka Hirata
- Department of Molecular Chemistry, Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hideki Sugimoto
- Department of Molecular Chemistry, Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Mayuko Miyanishi
- Institute for Materials Chemistry and Engineering and International Research Center for Molecular System, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering and International Research Center for Molecular System, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering and International Research Center for Molecular System, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shinobu Itoh
- Department of Molecular Chemistry, Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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5
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van Niekerk DME, Geswindt TE, Gerber WJ. Kinetic UV-Vis Spectroscopic and DFT Mechanistic Study of the Redox Reaction of [Os VIIIO 4(OH) n] n- ( n = 1, 2) and Methanol in a Basic Aqueous Matrix. Inorg Chem 2021; 60:782-797. [PMID: 33411524 DOI: 10.1021/acs.inorgchem.0c02799] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This combined experimental and computational study builds on our previous studies to elucidate the reaction mechanism of methanol oxidation by OsVIII oxido/hydroxido species (in basic aqueous media) while accounting for the simultaneous formation of OsVII species via a comproportionation reaction between OsVIII and OsVI. UV-Vis spectroscopy kinetic analyses with either CH3OH or the deuterated analogue CD3OH as a reducing agent revealed that transfer of α-carbon-hydrogen of methanol is the partial rate-limiting step. The resulting relatively large KIE value of approximately 11.82 is a combination of primary and secondary isotope effects. The Eyring plots for the oxidation of these isotopologues of methanol under the same reaction conditions are parallel to each other and hence have the same activation enthalpy [Δ⧧H° = 14.4 ± 1.2 kcal mol-1 (CH3OH) and 14.5 ± 1.3 kcal mol-1 (CD3OH)] but lowered activation entropy (Δ⧧S°) from -12.5 ± 4.1 cal mol-1 K-1 (CH3OH) to -17.1 ± 4.4 cal mol-1 K-1 (CD3OH). DFT computational studies at the PBE-D3 level with QZ4P (Os) and pVQZ (O and H) basis sets provide clear evidence to support the data and interpretations derived from the experimental kinetic work. Comparative DFT mechanistic investigations in a simulated aqueous phase (COSMO) indicate that methanol and OsVIII first associate to form a noncovalent adduct bound together by intermolecular H-bonding interactions. This is followed by spin-forbidden α-carbon-hydrogen transfer (not O-H transfer) from methanol to OsVIII by means of HAT, which is found to be the partial rate-limiting step. Without the organic and inorganic fragments dissociating from each other during the entire stepwise redox reaction (in order to avoid formation of highly energetically unfavorable monomer species), the HAT step is followed by PT and then ET before the final product monomers formaldehyde and OsVI dissociate from each other. DFT-calculated Δ⧧H° is within 5 kcal mol-1 of the experimentally obtained value, while the DFT Δ⧧S° is three times larger than that found from the experiment.
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Affiliation(s)
- Daniël M E van Niekerk
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch, 7602 Western Cape, South Africa
| | - Theodor E Geswindt
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch, 7602 Western Cape, South Africa
| | - Wilhelmus J Gerber
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch, 7602 Western Cape, South Africa
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6
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van Niekerk DME, Gerber WJ. A DFT Mechanistic Study of the trans-[Os VIO 2(OH) 4] 2– and [Os VIIIO 4(OH) n] n− ( n = 1, 2 cis) Comproportionation Proton-Coupled Electron Transfer Reaction. Inorg Chem 2018; 57:8909-8922. [DOI: 10.1021/acs.inorgchem.8b00840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniël M. E. van Niekerk
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch, 7602 Western Cape, South Africa
| | - Wilhelmus J. Gerber
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch, 7602 Western Cape, South Africa
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7
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Sharkey BE, Denning AL, Jentoft FC, Gangadhara R, Gopaladasu TV, Nicholas KM. New solid oxo-rhenium and oxo-molybdenum catalysts for the deoxydehydration of glycols to olefins. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.05.090] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Shul'pin GB, Vinogradov MM, Shul'pina LS. Oxidative functionalization of C–H compounds induced by the extremely efficient osmium catalysts (a review). Catal Sci Technol 2018. [DOI: 10.1039/c8cy00659h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent years, osmium complexes have found applications not only in thecis-hydroxylation of olefins but also very efficient in the oxygenation of C–H compounds (saturated and aromatic hydrocarbons and alcohols) by hydrogen peroxide as well as organic peroxides.
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Affiliation(s)
- Georgiy B. Shul'pin
- Semenov Institute of Chemical Physics
- Russian Academy of Sciences
- Moscow
- Russia
- Plekhanov Russian University of Economics
| | - Mikhail M. Vinogradov
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russia
| | - Lidia S. Shul'pina
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russia
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9
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Han X, Xiang L, Lamsfus CA, Mao W, Lu E, Maron L, Leng X, Chen Y. Synthesis and Reactivity of a Scandium Terminal Hydride: H2
Activation by a Scandium Terminal Imido Complex. Chemistry 2017; 23:14728-14732. [DOI: 10.1002/chem.201703905] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Xianghao Han
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P. R. China
| | - Li Xiang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P. R. China
| | - Carlos A. Lamsfus
- LPCNO, CNRS & INSA; Université Paul Sabatier; 135 Avenue de Rangueil 31077 Toulouse France
| | - Weiqing Mao
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P. R. China
| | - Erli Lu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P. R. China
| | - Laurent Maron
- LPCNO, CNRS & INSA; Université Paul Sabatier; 135 Avenue de Rangueil 31077 Toulouse France
| | - Xuebing Leng
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P. R. China
| | - Yaofeng Chen
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P. R. China
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10
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van Niekerk DM, Gerber WJ. A spectroscopic (stopped-flow UV–Vis and 1 H NMR Evans method) and DFT thermodynamic study of the comproportionation reaction of [Os VIII O 4 (OH) n ] n − ( n = 1, 2) and [Os VI O 2 (OH) 4 ] 2−. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.10.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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van Niekerk DME, Gerber WJ, Koch KR. A DFT study to unravel the ligand exchange kinetics and thermodynamics of Os(VIII) oxo/hydroxido/aqua complexes in aqueous matrices. Dalton Trans 2016; 45:7028-41. [PMID: 26991070 DOI: 10.1039/c6dt00657d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Os(VIII) oxo/hydroxido complexes that are abundant in mild to relatively concentrated basic aqueous solutions are Os(VIII)O4, [Os(VIII)O4(OH)](-) and two cis-[Os(VIII)O4(OH)2](2-) species. Os(VIII) complexes that contain water ligands are thermodynamically unfavoured w.r.t. the abovementioned species. Os(VIII)O4 reacts with hydroxide in two, consecutive, elementary coordination sphere expansion steps to form the [Os(VIII)O4(OH)](-) complex and then the cis-[Os(VIII)O4(OH)2](2-) species. The Gibbs energy of activation for both reactions, in the forward and reverse direction, are in the range of 6-12 kcal mol(-1) and are relatively close to diffusion-controlled. The thermodynamic driving force of the first reaction is the bonding energy of the Os(VIII)-OH metal-hydroxido ligand, while of the second reaction it is the relatively large hydration energy of the doubly-charged cis-[Os(VIII)O4(OH)2](2-) product compared to the singly-charged reactants. The DFT-calculated (PBE-D3 functional) in the simulated aqueous phase (COSMO) is -2.4 kcal mol(-1) for the first reaction and -0.6 kcal mol(-1) for the second reaction and agree to within 1 kcal mol(-1) with reported experimental values, at -2.7 and 0.3 kcal mol(-1) respectively. From QTAIM and EDA analyses it is deduced that the Os(VIII)[double bond, length as m-dash]O bonding interactions are ionic (closed-shell) and that Os(VIII)-OH bonding interactions are polar covalent (dative). In contrast to QTAIM, NCI analysis allowed for the identification of relatively weak intramolecular hydrogen bonding interactions between neighbouring oxo and hydroxido ligands in both [Os(VIII)O4(OH)](-) and cis-[Os(VIII)O4(OH)2](2-) complexes.
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Affiliation(s)
- Daniel M E van Niekerk
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch 7602, Western Cape, South Africa.
| | - Wilhelmus J Gerber
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch 7602, Western Cape, South Africa.
| | - Klaus R Koch
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch 7602, Western Cape, South Africa.
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12
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Dethlefsen JR, Lupp D, Teshome A, Nielsen LB, Fristrup P. Molybdenum-Catalyzed Conversion of Diols and Biomass-Derived Polyols to Alkenes Using Isopropyl Alcohol as Reductant and Solvent. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00427] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Johannes R. Dethlefsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet
207, DK-2800
Kgs. Lyngby, Denmark
| | - Daniel Lupp
- Department of Chemistry, Technical University of Denmark, Kemitorvet
207, DK-2800
Kgs. Lyngby, Denmark
| | - Ayele Teshome
- Department of Chemistry, Technical University of Denmark, Kemitorvet
207, DK-2800
Kgs. Lyngby, Denmark
| | - Lasse B. Nielsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet
207, DK-2800
Kgs. Lyngby, Denmark
| | - Peter Fristrup
- Department of Chemistry, Technical University of Denmark, Kemitorvet
207, DK-2800
Kgs. Lyngby, Denmark
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13
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Hassanpour A, Acuña-Parés F, Luis JM, Cusso O, Morales de la Rosa S, Campos-Martín JM, Fierro JLG, Costas M, Lloret-Fillol J, Mas-Ballesté R. H2 oxidation versus organic substrate oxidation in non-heme iron mediated reactions with H2O2. Chem Commun (Camb) 2015; 51:14992-5. [DOI: 10.1039/c5cc06402c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A mixture of α-[Fe(CF3SO3)2(BPMCN)] and H2O2 is able to oxidize H2. However, the presence of acetic acid enhances organic substrate oxidation.
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Affiliation(s)
- Azin Hassanpour
- Departamento de Química Inorgánica
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
| | - Ferran Acuña-Parés
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | - Josep M. Luis
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | - Olaf Cusso
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | | | | | - Jose L. G. Fierro
- Instituto de Catálisis y Petroleoquímica
- CSIC
- Marie Curie
- 2
- 28049 Madrid
| | - Miquel Costas
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | - Julio Lloret-Fillol
- Departament de Química and Institute of Computational Chemistry and Catalysis (IQCC)
- Universitat de Girona
- Campus Montilivi
- 17071 Girona
- Spain
| | - Rubén Mas-Ballesté
- Departamento de Química Inorgánica
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
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14
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Piccialli V. Ruthenium tetroxide and perruthenate chemistry. Recent advances and related transformations mediated by other transition metal oxo-species. Molecules 2014; 19:6534-82. [PMID: 24853716 PMCID: PMC6270930 DOI: 10.3390/molecules19056534] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 05/14/2014] [Accepted: 05/16/2014] [Indexed: 11/16/2022] Open
Abstract
In the last years ruthenium tetroxide is increasingly being used in organic synthesis. Thanks to the fine tuning of the reaction conditions, including pH control of the medium and the use of a wider range of co-oxidants, this species has proven to be a reagent able to catalyse useful synthetic transformations which are either a valuable alternative to established methods or even, in some cases, the method of choice. Protocols for oxidation of hydrocarbons, oxidative cleavage of C-C double bonds, even stopping the process at the aldehyde stage, oxidative cleavage of terminal and internal alkynes, oxidation of alcohols to carboxylic acids, dihydroxylation of alkenes, oxidative degradation of phenyl and other heteroaromatic nuclei, oxidative cyclization of dienes, have now reached a good level of improvement and are more and more included into complex synthetic sequences. The perruthenate ion is a ruthenium (VII) oxo-species. Since its introduction in the mid-eighties, tetrapropylammonium perruthenate (TPAP) has reached a great popularity among organic chemists and it is mostly employed in catalytic amounts in conjunction with N-methylmorpholine N-oxide (NMO) for the mild oxidation of primary and secondary alcohols to carbonyl compounds. Its use in the oxidation of other functionalities is known and recently, its utility in new synthetic transformations has been demonstrated. New processes, synthetic applications, theoretical studies and unusual transformations, published in the last eight years (2006-2013), in the chemistry of these two oxo-species, will be covered in this review with the aim of offering a clear picture of their reactivity. When appropriate, related oxidative transformations mediated by other metal oxo-species will be presented to highlight similarities and differences. An historical overview of some aspects of the ruthenium tetroxide chemistry will be presented as well.
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Affiliation(s)
- Vincenzo Piccialli
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli "Federico II", Via Cintia 4, 80126, Napoli, Italy.
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15
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Vinogradov MM, Kozlov YN, Nesterov DS, Shul'pina LS, Pombeiro AJL, Shul'pin GB. Oxidation of hydrocarbons with H2O2/O2 catalyzed by osmium complexes containing p-cymene ligands in acetonitrile. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00492b] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Osmium π-complexes containing p-cymene ligands efficiently catalyze (TONs up to 200 000) the oxidation of alkanes to alkyl hydroperoxides with H2O2.
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Affiliation(s)
- Mikhail M. Vinogradov
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991, Russia
- Centro de Química Estrutural
- Complexo I
| | - Yuriy N. Kozlov
- Semenov Institute of Chemical Physics
- Russian Academy of Science
- 119991 Moscow, Russia
| | - Dmytro S. Nesterov
- Centro de Química Estrutural
- Complexo I
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisbon, Portugal
| | - Lidia S. Shul'pina
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119991, Russia
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural
- Complexo I
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisbon, Portugal
| | - Georgiy B. Shul'pin
- Semenov Institute of Chemical Physics
- Russian Academy of Science
- 119991 Moscow, Russia
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16
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Gianetti TL, La Pierre HS, Arnold J. Group 5 Imides and Bis(imide)s as Selective Hydrogenation Catalysts. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300202] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Tsvetkov NP, Andino JG, Fan H, Verat AY, Caulton KG. Reactivity of the terminal oxo species ((tBu2PCH2SiMe2)2N)RhO. Dalton Trans 2013; 42:6745-55. [DOI: 10.1039/c3dt31972e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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18
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Bi S, Wang J, Liu L, Li P, Lin Z. Mechanism of the MeReO3-Catalyzed Deoxygenation of Epoxides. Organometallics 2012. [DOI: 10.1021/om300485w] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Siwei Bi
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong Province, People’s
Republic of China
| | - Jiayong Wang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong Province, People’s
Republic of China
| | - Lingjun Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong Province, People’s
Republic of China
| | - Ping Li
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong Province, People’s
Republic of China
| | - Zhenyang Lin
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People’s
Republic of China
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19
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Geswindt TE, Gerber WJ, Rohwer HE, Koch KR. A kinetic and thermodynamic study of the unexpected comproportionation reaction between cis-[Os(VIII)O4(OH)2](2-) and trans-[Os(VI)O2(OH)4](2-) to form a postulated [Os(VII)O3(OH)3](2-) complex anion. Dalton Trans 2011; 40:8581-8. [PMID: 21792440 DOI: 10.1039/c1dt10290g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A kinetic study of [OsO(4)] reduction by aliphatic alcohols (MeOH and EtOH) was performed in a 2.0 M NaOH matrix at 298.1 K. The rate model that best fitted the UV-VIS data supports a one-step, two electron reduction of Os(VIII) (present as both the [Os(VIII)O(4)(OH)](-) and cis-[Os(VIII)O(4)(OH)(2)](2-) species in a ratio of 0.34:0.66) to form the trans-[Os(VI)O(2)(OH)(4)](2-) species. The formed trans-[Os(VI)O(2)(OH)(4)](2-) species subsequently reacts relatively rapidly with the cis-[Os(VIII)O(4)(OH)(2)](2-) complex anion to form a postulated [Os(VII)O(3)(OH)(3)](2-) species according to: cis-[Os(VIII)O(4)(OH)(2)](2-) + trans-[Os(VI)O(2)(OH)(4)](2-) (k+2) <−> (k-2) 2[Os(VII)O(3)(OH)(3)](2-). The calculated forward, k(+2), and reverse, k(-2), reaction rate constants of this comproportionation reaction are 620.9 ± 14.6 M(-1) s(-1) and 65.7 ± 1.2 M(-1) s(-1) respectively. Interestingly, it was found that the postulated [Os(VII)O(3)(OH)(3)](2-) complex anion does not oxidize MeOH or EtOH. Furthermore, the reduction of Os(VIII) with MeOH or EtOH is first order with respect to the aliphatic alcohol concentration. In order to corroborate the formation of the [Os(VII)O(3)(OH)(3)](2-) species predicted with the rate model simulations, several Os(VIII)/Os(VI) mole fraction and mole ratio titrations were conducted in a 2.0 M NaOH matrix at 298.1 K under equilibrium conditions. These titrations confirmed that the cis-[Os(VIII)O(4)(OH)(2)](2-) and trans-[Os(VI)O(2)(OH)(4)](2-) species react in a 1:1 ratio with a calculated equilibrium constant, K(COM), of 9.3 ± 0.4. The ratio of rate constants k(+2) and k(-2) agrees quantitatively with K(COM), satisfying the principle of detailed balance. In addition, for the first time, the molar extinction coefficient spectrum of the postulated [Os(VII)O(3)(OH)(3)](2-) complex anion is reported.
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Affiliation(s)
- Theodor E Geswindt
- Research Group of PGM Chemistry, Dept of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Stellenbosch 7602, Western Cape, South Africa
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Gómez-Gallego M, Sierra MA. Kinetic isotope effects in the study of organometallic reaction mechanisms. Chem Rev 2011; 111:4857-963. [PMID: 21545118 DOI: 10.1021/cr100436k] [Citation(s) in RCA: 524] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mar Gómez-Gallego
- Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain.
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La Pierre HS, Arnold J, Toste FD. Z-Selective Semihydrogenation of Alkynes Catalyzed by a Cationic Vanadium Bisimido Complex. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007876] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Z-Selective Semihydrogenation of Alkynes Catalyzed by a Cationic Vanadium Bisimido Complex. Angew Chem Int Ed Engl 2011; 50:3900-3. [DOI: 10.1002/anie.201007876] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 02/07/2011] [Indexed: 11/07/2022]
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Ziegler JE, Zdilla MJ, Evans AJ, Abu-Omar MM. H2-Driven Deoxygenation of Epoxides and Diols to Alkenes Catalyzed by Methyltrioxorhenium. Inorg Chem 2009; 48:9998-10000. [PMID: 19807132 DOI: 10.1021/ic901792b] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeanette E. Ziegler
- Brown Laboratory, The Center for Catalytic Conversion of Biomass to Biofuels (C3Bio), Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907
| | - Michael J. Zdilla
- Brown Laboratory, The Center for Catalytic Conversion of Biomass to Biofuels (C3Bio), Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907
| | - Andrew J. Evans
- Brown Laboratory, The Center for Catalytic Conversion of Biomass to Biofuels (C3Bio), Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907
| | - Mahdi M. Abu-Omar
- Brown Laboratory, The Center for Catalytic Conversion of Biomass to Biofuels (C3Bio), Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907
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Ishiwata K, Kuwata S, Ikariya T. Hydrogen- and Oxygen-Driven Interconversion between Imido-Bridged Dirhodium(III) and Amido-Bridged Dirhodium(II) Complexes. J Am Chem Soc 2009; 131:5001-9. [DOI: 10.1021/ja900650j] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Koji Ishiwata
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Shigeki Kuwata
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Takao Ikariya
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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Conley B, Ganesh S, Gonzales J, Ess D, Nielsen R, Ziatdinov V, Oxgaard J, Goddard W, Periana R. Facile Oxy-Functionalization of a Nucleophilic Metal Alkyl with acis-Dioxo Metal Species via a (2+3) Transition State. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Facile Oxy-Functionalization of a Nucleophilic Metal Alkyl with acis-Dioxo Metal Species via a (2+3) Transition State. Angew Chem Int Ed Engl 2008; 47:7849-52. [DOI: 10.1002/anie.200802575] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Valliant-Saunders K, Gunn E, Shelton GR, Hrovat DA, Borden WT, Mayer JM. Oxidation of Tertiary Silanes by Osmium Tetroxide. Inorg Chem 2007; 46:5212-9. [PMID: 17511445 DOI: 10.1021/ic062468u] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the presence of an excess of pyridine ligand L, osmium tetroxide oxidizes tertiary silanes (Et(3)SiH, (i)Pr(3)SiH, Ph(3)SiH, or PhMe(2)SiH) to the corresponding silanols. With L = 4-tert-butylpyridine ((t)Bupy), OsO(4)((t)Bupy) oxidizes Et(3)SiH and PhMe(2)SiH to yield 100 +/- 2% of silanol and the structurally characterized osmium(VI) mu-oxo dimer [OsO(2)((t)Bupy)(2)](2)(mu-O)(2) (1a). With L = pyridine (py), only 40-60% yields of R(3)SiOH are obtained, apparently because of coprecipitation of osmium(VIII) with [Os(O)(2)py(2)](2)(mu-O)(2) (1b). Excess silane in these reactions causes further reduction of the OsVI products, and similar osmium "over-reduction" is observed with PhSiH(3), Bu(3)SnH, and boranes. The pathway for OsO(4)(L) + R(3)SiH involves an intermediate, which forms rapidly at 200 K and decays more slowly to products. NMR and IR spectra indicate that the intermediate is a monomeric Os(VI)-hydroxo-siloxo complex, trans-cis-cis-Os(O)(2)L(2)(OH)(OSiR(3)). Mechanistic studies and density functional theory calculations indicate that the intermediate is formed by the [3 + 2] addition of an Si-H bond across an O=Os=O fragment. This is the first direct observation of a [3 + 2] intermediate in a sigma-bond oxidation, though such species have previously been implicated in reactions of H-H and C-H bonds with OsO(4)(L) and RuO(4).
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Affiliation(s)
- Karine Valliant-Saunders
- University of Washington, Department of Chemistry, P.O. Box 351700, Seattle, Washington 98195-1700, USA
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Hanna TE, Lobkovsky E, Chirik PJ. Dihydrogen and Silane Addition to Base-Free, Monomeric Bis(cyclopentadienyl)titanium Oxides. Inorg Chem 2007; 46:2359-61. [PMID: 17328544 DOI: 10.1021/ic070205+] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthesis of a family of monomeric, base-free bis(cyclopentadienyl)titanium oxide complexes, (eta5-C5Me4R)2Ti=O (R = iPr, SiMe3, SiMe2Ph), has been accomplished by deoxygenation of styrene oxide by the corresponding sandwich compound. One example, (eta5-C5Me4SiMe2Ph)2Ti=O, was characterized by X-ray diffraction. All three complexes undergo clean and facile hydrogenation at 23 degrees C, yielding the titanocene hydroxy hydride complexes (eta5-C5Me4R)2Ti(OH)H. For (eta5-C5Me4SiMe3)2Ti=O, the kinetics of hydrogenation were first-order in dihydrogen and exhibited a normal, primary kinetic isotope effect of 2.7(3) at 23 degrees C consistent with a 1,2-addition pathway. Isotope effects of the same direction but smaller magnitudes were determined for silane addition.
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Affiliation(s)
- Tamara E Hanna
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, USA
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Osako T, Watson EJ, Dehestani A, Bales BC, Mayer JM. Methane Oxidation by Aqueous Osmium Tetroxide and Sodium Periodate: Inhibition of Methanol Oxidation by Methane. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200602560] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Osako T, Watson EJ, Dehestani A, Bales BC, Mayer JM. Methane Oxidation by Aqueous Osmium Tetroxide and Sodium Periodate: Inhibition of Methanol Oxidation by Methane. Angew Chem Int Ed Engl 2006; 45:7433-6. [PMID: 17086587 DOI: 10.1002/anie.200602560] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takao Osako
- Department of Chemistry, University of Washington, Seattle, WA 98195-1700, USA
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Drees M, Strassner T. Ruthenium Tetraoxide Oxidations of Alkanes: DFT Calculations of Barrier Heights and Kinetic Isotope Effects. J Org Chem 2006; 71:1755-60. [PMID: 16496958 DOI: 10.1021/jo051521d] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The oxidation of C-H and C-C bonds by metal-oxo compounds is of general interest. We studied the RuO4-mediated catalytic oxidation of several cycloalkanes such as adamantane and cis- and trans-decalin as well as methane. B3LYP/6-31G(d) calculations on the experimentally proposed (3+2) mechanism are in good agreement with known experimental results. Comparison of experimental and theoretical kinetic isotope effects confirms the proposed mechanism. Besides RuO4, we also looked at RuO4(OH)- as a potential active species to account for ruthenium tetraoxide oxidations under strong basic conditions.
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Affiliation(s)
- Markus Drees
- Institut für Organische Chemie, Technische Universität Dresden, 01062 Dresden, Germany
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Appel AM, DuBois DL, DuBois MR. Molybdenum−Sulfur Dimers as Electrocatalysts for the Production of Hydrogen at Low Overpotentials. J Am Chem Soc 2005; 127:12717-26. [PMID: 16144422 DOI: 10.1021/ja054034o] [Citation(s) in RCA: 152] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
(CpMomu-S)2S2CH2, 2, and related derivatives serve as electrocatalysts for the reduction of protons with current efficiencies near 100%. The kinetics of the electrochemical reduction process has been studied, and the effects of varying the proton source, the solvent, the cyclopentadienyl substituents, and the sulfur substituents on the catalyst have been examined. The reduction of excess p-cyanoanilinium tetrafluoroborate under a hydrogen atmosphere in 0.3 M Et4NBF4/acetonitrile buffered at pH 7.6 is catalyzed by 2 at -0.64 V versus ferrocene, with an overpotential of 120 mV. Protonation of the sulfido ligand in 2 is an initial step in the catalytic process, and the rate-determining step at high acid concentrations appears to be the elimination of dihydrogen. The elimination may occur either from adjacent hydrosulfido sites or from a hydrosulfido-molybdenum hydride intermediate.
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Affiliation(s)
- Aaron M Appel
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
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Kamachi T, Kouno T, Yoshizawa K. Participation of Multioxidants in the pH Dependence of the Reactivity of Ferrate(VI). J Org Chem 2005; 70:4380-8. [PMID: 15903315 DOI: 10.1021/jo050091o] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Alcohol oxidation by ferrate (FeO(4)(2)(-)) in water is investigated from B3LYP density functional theory calculations in the framework of polarizable continuum model. The oxidizing power of three species, nonprotonated, monoprotonated, and diprotonated ferrates, was evaluated. The LUMO energy levels of nonprotonated and monoprotonated ferrates are greatly reduced by solvent effects, and as a result the oxidizing power of these two species is increased enough to effectively mediate a hydrogen-atom abstraction from the C-H and O-H bonds of methanol. The oxidizing power of these oxidants increases in the order nonprotonated ferrate < monoprotonated ferrate < diprotonated ferrate. The reaction pathway is initiated by C-H bond activation, followed by the formation of a hydroxymethyl radical intermediate or an organometallic intermediate with an Fe-C bond. Kinetic aspects of this reaction are analyzed from calculated energy profiles and experimentally known pK(a) values. The pH dependence of this reaction in water is explained well in terms of a multioxidant scheme.
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Affiliation(s)
- Takashi Kamachi
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 812-8581, Japan
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