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Zámbó GG, Schlagintweit JF, Reich RM, Kühn FE. Organometallic 3d transition metal NHC complexes in oxidation catalysis. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00127f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of processes for the selective oxidation of hydrocarbons is a major focus in catalysis research. Making this process simultaneously environmentally friendly is still challenging. 3d transition metals are...
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Ottenbacher RV, Talsi EP, Bryliakov KP. Recent progress in catalytic oxygenation of aromatic C–H groups with the environmentally benign oxidants H
2
O
2
and O
2. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5900] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Roman V. Ottenbacher
- Novosibirsk State University, Faculty of Natural Sciences Pirogova, 1 Novosibisk 630090 Russia
- Boreskov Institute of Catalysis Pr. Lavrentieva 5 Novosibisk 630090 Russia
| | - Evgenii P. Talsi
- Novosibirsk State University, Faculty of Natural Sciences Pirogova, 1 Novosibisk 630090 Russia
- Boreskov Institute of Catalysis Pr. Lavrentieva 5 Novosibisk 630090 Russia
| | - Konstantin P. Bryliakov
- Novosibirsk State University, Faculty of Natural Sciences Pirogova, 1 Novosibisk 630090 Russia
- Boreskov Institute of Catalysis Pr. Lavrentieva 5 Novosibisk 630090 Russia
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Liang Q, Song D. Iron N-heterocyclic carbene complexes in homogeneous catalysis. Chem Soc Rev 2020; 49:1209-1232. [DOI: 10.1039/c9cs00508k] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review article summarizes recent development of homogeneous iron N-heterocyclic carbene catalysts.
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Affiliation(s)
- Qiuming Liang
- Davenport Chemical Research Laboratories
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | - Datong Song
- Davenport Chemical Research Laboratories
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
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Lyakin OY, Bryliakov KP, Talsi EP. Non-heme oxoiron(V) intermediates in chemo-, regio- and stereoselective oxidation of organic substrates. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.01.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Schlagintweit JF, Nguyen L, Dyckhoff F, Kaiser F, Reich RM, Kühn FE. Exploring different coordination modes of the first tetradentate NHC/1,2,3-triazole hybrid ligand for group 10 complexes. Dalton Trans 2019; 48:14820-14828. [DOI: 10.1039/c9dt03430g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis and characterisation of the first tetradentate N-heterocyclic carbene (NHC)/1,2,3-triazole hybrid ligand obtained by means of copper(i) catalyzed “click” chemistry and its application for the synthesis of group 10 complexes is reported.
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Affiliation(s)
- Jonas F. Schlagintweit
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Linda Nguyen
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Florian Dyckhoff
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Felix Kaiser
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Robert M. Reich
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
| | - Fritz E. Kühn
- Molecular Catalysis
- Catalysis Research Center and Department of Chemistry
- Technische Universität München
- D-85748 Garching bei München
- Germany
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Mechanism of selective benzene hydroxylation catalyzed by iron-containing zeolites. Proc Natl Acad Sci U S A 2018; 115:12124-12129. [PMID: 30429333 DOI: 10.1073/pnas.1813849115] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A direct, catalytic conversion of benzene to phenol would have wide-reaching economic impacts. Fe zeolites exhibit a remarkable combination of high activity and selectivity in this conversion, leading to their past implementation at the pilot plant level. There were, however, issues related to catalyst deactivation for this process. Mechanistic insight could resolve these issues, and also provide a blueprint for achieving high performance in selective oxidation catalysis. Recently, we demonstrated that the active site of selective hydrocarbon oxidation in Fe zeolites, named α-O, is an unusually reactive Fe(IV)=O species. Here, we apply advanced spectroscopic techniques to determine that the reaction of this Fe(IV)=O intermediate with benzene in fact regenerates the reduced Fe(II) active site, enabling catalytic turnover. At the same time, a small fraction of Fe(III)-phenolate poisoned active sites form, defining a mechanism for catalyst deactivation. Density-functional theory calculations provide further insight into the experimentally defined mechanism. The extreme reactivity of α-O significantly tunes down (eliminates) the rate-limiting barrier for aromatic hydroxylation, leading to a diffusion-limited reaction coordinate. This favors hydroxylation of the rapidly diffusing benzene substrate over the slowly diffusing (but more reactive) oxygenated product, thereby enhancing selectivity. This defines a mechanism to simultaneously attain high activity (conversion) and selectivity, enabling the efficient oxidative upgrading of inert hydrocarbon substrates.
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Zhou Y, Ma Z, Tang J, Yan N, Du Y, Xi S, Wang K, Zhang W, Wen H, Wang J. Immediate hydroxylation of arenes to phenols via V-containing all-silica ZSM-22 zeolite triggered non-radical mechanism. Nat Commun 2018; 9:2931. [PMID: 30050071 PMCID: PMC6062531 DOI: 10.1038/s41467-018-05351-w] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 06/20/2018] [Indexed: 11/13/2022] Open
Abstract
Hydroxylation of arenes via activation of aromatic Csp2–H bond has attracted great attention for decades but remains a huge challenge. Herein, we achieve the ring hydroxylation of various arenes with stoichiometric hydrogen peroxide (H2O2) into the corresponding phenols on a robust heterogeneous catalyst series of V–Si–ZSM-22 (TON type vanadium silicalite zeolites) that is straightforward synthesized from an unusual ionic liquid involved dry-gel-conversion route. For benzene hydroxylation, the phenol yield is 30.8% (selectivity >99%). Ring hydroxylation of mono-/di-alkylbenzenes and halogenated aromatic hydrocarbons cause the yields up to 26.2% and selectivities above 90%. The reaction is completed within 30 s, the fastest occasion so far, resulting in ultra-high turnover frequencies (TOFs). Systematic characterization including 51V NMR and X-ray absorption fine structure (XAFS) analyses suggest that such high activity associates with the unique non-radical hydroxylation mechanism arising from the in situ created diperoxo V(IV) state. Hydroxylation of arenes via activation of aromatic Csp2–H bond remains a challenge. Here, the authors have managed to get various arenes hydroxylated to corresponding phenols using stoichiometric hydrogen peroxide and a series of robust V–Si–ZSM-22 catalysts synthesized via an ionic liquid involved dry-gel-conversion route.
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Affiliation(s)
- Yu Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University (former Nanjing University of Technology), Nanjing, 210009, P.R. China
| | - Zhipan Ma
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University (former Nanjing University of Technology), Nanjing, 210009, P.R. China
| | - Junjie Tang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University (former Nanjing University of Technology), Nanjing, 210009, P.R. China
| | - Ning Yan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.
| | - Yonghua Du
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore
| | - Kai Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University (former Nanjing University of Technology), Nanjing, 210009, P.R. China
| | - Wei Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University (former Nanjing University of Technology), Nanjing, 210009, P.R. China
| | - Haimeng Wen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University (former Nanjing University of Technology), Nanjing, 210009, P.R. China
| | - Jun Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University (former Nanjing University of Technology), Nanjing, 210009, P.R. China.
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