1
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Gillespie JE, Lam NYS, Phipps RJ. Ortho-Selective amination of arene carboxylic acids via rearrangement of acyl O-hydroxylamines. Chem Sci 2023; 14:10103-10111. [PMID: 37772106 PMCID: PMC10530477 DOI: 10.1039/d3sc03293k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/17/2023] [Indexed: 09/30/2023] Open
Abstract
Direct amination of arene C-H bonds is an attractive disconnection to form aniline-derived building blocks. This transformation presents significant practical challenges; classical methods for ortho-selective amination require strongly acidic or forcing conditions, while contemporary catalytic processes often require bespoke directing groups and/or precious metal catalysis. We report a mild and procedurally straightforward ortho-selective amination of arene carboxylic acids, arising from a facile rearrangement of acyl O-hydroxylamines without requiring precious metal catalysts. A broad scope of benzoic acid substrates are compatible and the reaction can be applied to longer chain arene carboxylic acids. Mechanistic studies probe the specific requirement for trifluoroacetic acid in generating the active aminating agent, and suggest that two separate mechanisms may be operating in parallel in the presence of an iron catalyst: (i) an iron-nitrenoid intermediate and (ii) a radical chain pathway. Regardless of which mechanism is followed, high ortho selectivity is obtained, proposed to arise from the directivity (first) or attractive interactions (second) arising with the carboxylic acid motif.
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Affiliation(s)
- James E Gillespie
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Nelson Y S Lam
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Robert J Phipps
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
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2
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Hu X, Zhao X, Lv X, Wu YB, Bu Y, Lu G. Ab Initio Metadynamics Simulations of Hexafluoroisopropanol Solvent Effects: Synergistic Role of Solvent H-Bonding Networks and Solvent-Solute C-H/π Interactions. Chemistry 2023; 29:e202203879. [PMID: 36575142 DOI: 10.1002/chem.202203879] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 12/27/2022] [Indexed: 12/29/2022]
Abstract
The solvent effects in Friedel-Crafts cycloalkylation of epoxides and Cope rearrangement of aldimines were investigated by using ab initio molecular dynamics simulations. Explicit molecular treatments were applied for both reactants and solvents. The reaction mechanisms were elucidated via free energy calculations based on metadynamics simulations. The results reveal that both reactions proceed in a concerted fashion. Key solvent-substrate interactions are identified from the structures of transition states with explicit solvent molecules. The remarkable promotion effect of hexafluoroisopropanol solvent is ascribed to the synergistic effect of H-bonding networks and C-H/π interactions with substrates.
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Affiliation(s)
- Xinmin Hu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, P. R. China
| | - Xia Zhao
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, P. R. China
| | - Xiangying Lv
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, P. R. China
| | - Yan-Bo Wu
- Key Lab for Materials of Energy Conversion and Storage of Shanxi Province, and Key Lab of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, Shanxi, 030006, P. R. China
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, P. R. China
| | - Gang Lu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong, 250100, P. R. China
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3
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Bauer EB, Jurkowski K. Ferrocenium Ions as Catalysts: Decomposition Studies and Counteranion Influence on Catalytic Activity. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1705992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractCatalyst decomposition has a negative effect on catalytic activity, and knowledge of decomposition pathways can assist with catalyst development. Ferrocenium cations have been employed as catalysts in a number of organic transformations, and we investigated the stability of a number of ferrocenium salts in solution. The observed rate decomposition constants for [Fc]Cl, [Fc]PF6, [Fc]BF4, [Fc]CSA [Fc = ferrocenium, CSA = camphor-10-sulfonate (β)], [AcFc]SbF6, (AcFc = acetylated ferrocene), and [FcB(OH)2]SbF6 [FcB(OH)2 = ferrocenylboronic acid] were determined in CH2Cl2 solution by time-resolved UV-vis spectroscopy. The rate decomposition constants depended on the nature of the counterion, with [Fc]Cl being the most stable complex in solution. The decomposition rate constants dropped by roughly an order of magnitude in most cases when the experiments were performed in nitrogenated solvent, demonstrating that the decomposition is mainly an oxidative process. The cosolvent HFIP (1,1,1,3,3,3-hexafluoropropan-2-ol) slowed the decomposition of the ferrocenium cations as well. Many catalytic or stoichiometric reactions of ferrocenium cations are performed with alcohols; we determined that hexan-1-ol is decomposed over the course of 16 hours, but not oxidized in the presence of a ferrocenium cation. Finally, the different ferrocenium cations were employed in a test reaction to determine catalytic activity. The nucleophilic substitution of hydroxyl groups in a tertiary propargylic alcohol by an alcohol is catalyzed by all complexes, and, again, a counterion dependency of the catalytic activity was observed. Also, HFIP increases the catalytic activity of the ferrocenium cations. The research has importance in the development of ferrocenium-based catalyst systems, because changes in the counterion as well as the architecture of the ferrocenium cation have an influence on stability and catalytic activity.
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4
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Chen X, Sun D, Gao L, Zhao Y, de Visser SP, Wang Y. Theoretical studies unveil the unusual bonding in oxygenation reactions involving cobalt(ii)-iodylarene complexes. Chem Commun (Camb) 2021; 57:3115-3118. [PMID: 33630000 DOI: 10.1039/d0cc07894h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT calculations reveal that the iodine of cobalt(ii)-iodylarene complexes acts as a directing group via halogen bonding interaction to substrates. A transient 3c-4e bond is formed during oxidation reactions to decrease the activation energy by electron delocalization. Dehydrogenation of dihydroantharacene proceeds via a novel concerted hydride transfer/proton transfer mechanism.
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Affiliation(s)
- Xiaolu Chen
- Institute of Drug Discovery Technology, Ningbo University, Ningbo, Zhejiang, China.
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5
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Ji X, Zhang Z, Wang Y, Han Y, Peng H, Li F, Liu L. Catalyst-free synthesis of α,α-disubstituted carboxylic acid derivatives under ambient conditions via a Wolff rearrangement reaction. Org Chem Front 2021. [DOI: 10.1039/d1qo01265g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Herein, a hexafluoroisopropanol (HFIP)-promoted Wolff rearrangement reaction was developed, delivering various α,α-disubstituted carboxylic acid derivatives in good to excellent yields.
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Affiliation(s)
- Xin Ji
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Zhikun Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Yuzhu Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Yazhe Han
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Huiling Peng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Fangzhu Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
| | - Lu Liu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, P. R. China
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6
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Highly efficient transformation of ethylbenzene into acetophenone catalyzed by NHPI/Co(II) using molecular oxygen in hexafluoropropan-2-ol. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111244] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Tang L, Wang ZL, He YH, Guan Z. An Electrochemical Beckmann Rearrangement: Traditional Reaction via Modern Radical Mechanism. CHEMSUSCHEM 2020; 13:4929-4936. [PMID: 32710520 DOI: 10.1002/cssc.202001553] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Electrosynthesis as a potential means of introducing heteroatoms into the carbon framework is rarely studied. Herein, the electrochemical Beckmann rearrangement, i. e. the direct electrolysis of ketoximes to amides, is presented for the first time. Using a constant current as the driving force, the reaction can be easily carried out under neutral conditions at room temperature. Based on a series of mechanistic studies, a novel radical Beckmann rearrangement mechanism is proposed. This electrochemical Beckmann rearrangement does not follow the trans-migration rule of the classical Beckmann rearrangement.
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Affiliation(s)
- Li Tang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Zhi-Lv Wang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Yan-Hong He
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
| | - Zhi Guan
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China
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8
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Wei C, He Y, Wang J, Ye X, Wojtas L, Shi X. Hexafluoroisopropanol-Promoted Disulfidation and Diselenation of Alkyne, Alkene, and Allene. Org Lett 2020; 22:5462-5465. [PMID: 32588633 PMCID: PMC10264211 DOI: 10.1021/acs.orglett.0c01834] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hexafluoroisopropanol (HFIP)-promoted disulfidation and diselenation of C-C unsaturated bonds is reported. Reactions of unactivated alkyne, alkene, and allene, respectively, with disulfides or diselenides in HFIP led to desired products in good to excellent yields (up to 96%). In contrast, other solvents, such as isopropanol and dichloroethane, could not promote the same reaction. This method revealed an example of HFIP-promoted transformations under the mild conditions, which greatly highlighted the unique reactivity of this special solvent.
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Affiliation(s)
- Chiyu Wei
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Ying He
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Jin Wang
- College of Chemistry, Chemical Engineering and Material Science, Shandong Normal University, Jinan, Shandong 250014, China
| | - Xiaohan Ye
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
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9
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Možina Š, Iskra J. Aerobic Oxidation of Secondary Alcohols with Nitric Acid and Iron(III) Chloride as Catalysts in Fluorinated Alcohol. J Org Chem 2019; 84:14579-14586. [PMID: 31642683 DOI: 10.1021/acs.joc.9b02109] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Fluorinated alcohols as solvents strongly influence and direct chemical reaction through donation of strong hydrogen bonds while being weak acceptors. We used 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) as the activating solvent for a nitric acid and FeCl3-catalyzed aerobic oxidation of secondary alcohols to ketones. Reaction proceeded selectively with excellent yields with no reaction on the primary alcohol group. Oxidation of benzyl alcohols proceeds selectively to aldehydes with only HNO3 as the catalyst, while reaction on tertiary alcohols proceeds through dehydration and dimerization. A mechanistic study showed in situ formation of NOCl that converts alcohol into alkyl nitrite, which in the presence of Fe3+ ions and fluorinated alcohol decomposes into ketone. The study indicates that iron(III) acts also as the single-electron transfer catalyst in regeneration of NOCl reactive species.
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Affiliation(s)
- Štefan Možina
- Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins , Jamova Cesta 39 , 1000 Ljubljana , Slovenia.,Jožef Stefan International Postgraduate School , Jamova Cesta 39 , 1000 Ljubljana , Slovenia
| | - Jernej Iskra
- Department of Physical and Organic Chemistry , Jožef Stefan Institute , Jamova Cesta 39 , 1000 Ljubljana , Slovenia.,Faculty of Chemistry and Chemical Technology , University of Ljubljana , Večna Pot 113 , 1000 Ljubljana , Slovenia
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10
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Bach RD. Structure and Mechanism for Alkane Oxidation and Alkene Epoxidation with Hydroperoxides, α-Hydroxy Hydroperoxides, and Peroxyacids: A Theoretical Study. J Phys Chem A 2019; 123:9520-9530. [DOI: 10.1021/acs.jpca.9b06803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert D. Bach
- Department of Chemistry and Biochemistry, University of Delaware, 210 South College Avenue, Newark, Delaware 19716, United States
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11
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Zhao W, Lv Y, Li J, Feng Z, Ni Y, Hadjichristidis N. Fast and selective organocatalytic ring-opening polymerization by fluorinated alcohol without a cocatalyst. Nat Commun 2019; 10:3590. [PMID: 31399569 PMCID: PMC6689068 DOI: 10.1038/s41467-019-11524-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 07/17/2019] [Indexed: 11/12/2022] Open
Abstract
Organocatalysis is an important branch of catalysis for various organic transformations and materials preparation. Polymerizations promoted by organic catalysts can produce polymeric materials without any metallic residues, providing charming materials for high-value and sensitive domains such as biomedical applications, microelectronic devices and food packaging. Herein, we describe a fluorinated alcohol based catalytic system for polypeptide synthesis via catalytic ring-opening polymerization (ROP) of α-amino acid N-carboxyanhydride (NCA), fulfilling cocatalyst free, metal free, high rate and high selectivity. During polymerization, the fluorinated alcohol catalyst forms multiple dynamic hydrogen bonds with the initiator, monomer and propagating polymer chain. These cooperative hydrogen bonding interactions activate the NCA monomers and simultaneously protect the overactive initiator/propagating polymer chain-ends, which offers the whole polymerization with high activity and selectivity. Mechanistic studies indicate a monocomponent-multifunctional catalytic mode of fluorinated alcohol. This finding provides a metal free and fast approach to access well-defined polypeptides. Polymerizations promoted by organic catalysts can produce polymeric materials without any metallic residues contamination. Here the authors show a fluorinated alcohol based catalytic system for polypeptide synthesis from α-amino acid N-carboxyanhydride, fulfilling cocatalyst and metal free conditions with high rate and selectivity.
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Affiliation(s)
- Wei Zhao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, People's Republic of China.
| | - Yanfeng Lv
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, People's Republic of China
| | - Ji Li
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, People's Republic of China
| | - Zihao Feng
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, 710021, Xi'an, People's Republic of China
| | - Yonghao Ni
- Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - Nikos Hadjichristidis
- KAUST Catalysis Center, Polymer Synthesis Laboratory, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
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12
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Shi G, Xu S, Bao Y, Xu J, Liang Y. Selective aerobic oxidation of toluene to benzaldehyde on immobilized CoOx on SiO2 catalyst in the presence of N-hydroxyphthalimide and hexafluoropropan-2-ol. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.01.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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13
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Zhang L, Liardet L, Luo J, Ren D, Grätzel M, Hu X. Photoelectrocatalytic Arene C-H Amination. Nat Catal 2019; 2:266-373. [PMID: 30984910 PMCID: PMC6459354 DOI: 10.1038/s41929-019-0231-9] [Citation(s) in RCA: 141] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 01/11/2019] [Indexed: 12/26/2022]
Abstract
Photoelectrochemical cells are widely studied for solar energy conversion. However, they have rarely been used for the synthesis of high added-value organic molecules. Here we describe a strategy to use hematite, an abundant and robust photoanode, for non-directed arene C-H amination. Under illumination the photo generated holes in hematite oxidizes electron-rich arenes to radical cations which further react with azoles to give nitrogen heterocycles of medicinal interest. Unusual ortho-selectivity has been achieved probably due to a hydrogen bonding interaction between the substrates and the hexafluoroisopropanol co-solvent. The method exhibits broad scope and is successfully applied for the late-stage functionalization of several pharmaceutical molecules.
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Affiliation(s)
- Lei Zhang
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, 1015 Lausanne, Switzerland
| | - Laurent Liardet
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, 1015 Lausanne, Switzerland
| | - Jingshan Luo
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LPI, 1015 Lausanne, Switzerland
- Institute of Photoelectronic Thin Film Devices and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
| | - Dan Ren
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LPI, 1015 Lausanne, Switzerland
| | - Michael Grätzel
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LPI, 1015 Lausanne, Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, 1015 Lausanne, Switzerland
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14
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Hollóczki O, Macchieraldo R, Gleede B, Waldvogel SR, Kirchner B. Interfacial Domain Formation Enhances Electrochemical Synthesis. J Phys Chem Lett 2019; 10:1192-1197. [PMID: 30802066 DOI: 10.1021/acs.jpclett.9b00112] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The electroorganic C,C coupling of phenols to other aryl components is controlled by the fluoroalcohol-alcohol mixture solvents. Classical molecular dynamics and static density functional theory reveal that both kinds of solvents interact with the substrates, influencing the electronic structure of a phenoxyl radical intermediate in a cooperative manner to achieve maximal efficiency and selectivity. Simulations of the electrolyte-electrode interface showed that the substrates adsorb on the diamond surface in such a way that the repulsive fluorous-lipophilic interactions can be minimized and the attractive lipophilic-lipophilic interplay can be maximized, whereas the advantageous hydrogen bonding with the solvent can be retained. Accordingly, the solvent induces efficiency through the interaction of hydrogen bonding and the structure that controls the mesoscopic separation in these fluids. Since these findings are not specific to electrochemistry, by extending this principle to other heterogeneous processes, e.g., catalysis, their rate, yield, and selectivity can be potentially increased as well.
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Affiliation(s)
- Oldamur Hollóczki
- Mulliken Center for Theoretical Chemistry , University of Bonn , Beringstrasse 4+6 , D-53115 Bonn , Germany
| | - Roberto Macchieraldo
- Mulliken Center for Theoretical Chemistry , University of Bonn , Beringstrasse 4+6 , D-53115 Bonn , Germany
| | - Barbara Gleede
- Institute of Organic Chemistry , Johannes Gutenberg University Mainz , Duesbergweg 10-14 , D-55128 Mainz , Germany
| | - Siegfried R Waldvogel
- Institute of Organic Chemistry , Johannes Gutenberg University Mainz , Duesbergweg 10-14 , D-55128 Mainz , Germany
| | - Barbara Kirchner
- Mulliken Center for Theoretical Chemistry , University of Bonn , Beringstrasse 4+6 , D-53115 Bonn , Germany
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15
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Saá JM, Lillo VJ, Mansilla J. Catalysis by Networks of Cooperative Hydrogen Bonds. NONCOVALENT INTERACTIONS IN CATALYSIS 2019. [DOI: 10.1039/9781788016490-00066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The main paradigm of today's chemistry is sustainability. In pursuing sustainability, we need to learn from chemical processes carried out by Nature and realize that Nature does not use either strong acids, or strong bases or fancy reagents to achieve outstanding chemical processes. Instead, enzyme activity leans on the cooperation of several chemical entities to avoid strong acids or bases or to achieve such an apparently simple goal as transferring a proton from an NuH unit to an E unit (NuH + E → Nu–EH). Hydrogen bond catalysis emerged strongly two decades ago in trying to imitate Nature and avoid metal catalysis. Now to mount another step in pursuing the goal of sustainability, the focus is upon cooperativity between the different players involved in catalysis. This chapter looks at the concept of cooperativity and, more specifically, (a) examines the role of cooperative hydrogen bonded arrays of the general type NuH⋯(NuH)n⋯NuH (i.e. intermolecular cooperativity) to facilitate general acid–base catalysis, not only in the solution phase but also under solvent-free and catalyst-free conditions, and, most important, (b) analyzes the capacity of designer chiral organocatalysts displaying intramolecular networks of cooperative hydrogen bonds (NCHBs) to facilitate enantioselective synthesis by bringing conformational rigidity to the catalyst in addition to simultaneously increasing the acidity of key hydrogen atoms so to achieve better complementarity in the highly polarized transition states.
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Affiliation(s)
- José M. Saá
- Department de Química, Universitat de les Illes Balears Crta. de Valldemossa km 7.5 07122 Palma de Mallorca Illes Balears Spain
| | - Victor J. Lillo
- Department de Química, Universitat de les Illes Balears Crta. de Valldemossa km 7.5 07122 Palma de Mallorca Illes Balears Spain
| | - Javier Mansilla
- Department de Química, Universitat de les Illes Balears Crta. de Valldemossa km 7.5 07122 Palma de Mallorca Illes Balears Spain
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16
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Li S, Zhou H, Xiao L, Fan J, Zheng X. Fabrication of Super-Hydrophobic Titanosilicate Sub-micro Sphere with Enhanced Epoxidation Catalytic Activity. Catal Letters 2019. [DOI: 10.1007/s10562-019-02720-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Shalit H, Dyadyuk A, Pappo D. Selective Oxidative Phenol Coupling by Iron Catalysis. J Org Chem 2019; 84:1677-1686. [DOI: 10.1021/acs.joc.8b03084] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hadas Shalit
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Alina Dyadyuk
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Doron Pappo
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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18
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Yu L, Li SS, Li W, Yu S, Liu Q, Xiao J. Fluorinated Alcohol-Promoted Reaction of Chlorohydrocarbons with Diverse Nucleophiles for the Synthesis of Triarylmethanes and Tetraarylmethanes. J Org Chem 2018; 83:15277-15283. [PMID: 30450905 DOI: 10.1021/acs.joc.8b02549] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This article reports an efficient synthesis of triarylmethanes and tetraarylmethanes from chlorohydrocarbons with miscellaneous nucleophiles in fluorinated alcohols, featuring metal-free, wide substrate scope, excellent functional group tolerance, and mild reaction conditions.
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Affiliation(s)
- Liping Yu
- College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China
| | - Shuai-Shuai Li
- Shandong Province Key Laboratory of Applied Mycology, College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao 266109 , China
| | - Weina Li
- Shandong Province Key Laboratory of Applied Mycology, College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao 266109 , China
| | - Shitao Yu
- College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao 266042 , China
| | - Qing Liu
- College of Chemical and Environmental Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
| | - Jian Xiao
- Shandong Province Key Laboratory of Applied Mycology, College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao 266109 , China
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19
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Affiliation(s)
- Belinda L. Slakman
- Department of Chemical Engineering Northeastern University Boston Massachusetts
| | - Richard H. West
- Department of Chemical Engineering Northeastern University Boston Massachusetts
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20
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Mondal M, Begum T, Bharali P. Regioselective C–H and N–H functionalization of purine derivatives and analogues: a synthetic and mechanistic perspective. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01860j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This perspective provides a systematic and concise overview of the recent development in C–H/N–H bond functionalization in purine derivatives and analogues.
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Affiliation(s)
- Manoj Mondal
- Department of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | - Tahshina Begum
- Chemical Sciences & Technology Division
- CSIR-NEIST
- AcSIR
- Jorhat-785006
- India
| | - Pankaj Bharali
- Department of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
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21
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22
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Gaster E, Kozuch S, Pappo D. Selective Aerobic Oxidation of Methylarenes to Benzaldehydes Catalyzed by N
-Hydroxyphthalimide and Cobalt(II) Acetate in Hexafluoropropan-2-ol. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702511] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Eden Gaster
- Department of Chemistry; Ben-Gurion University of the Negev; Beer Sheva 84105 Israel
| | - Sebastian Kozuch
- Department of Chemistry; Ben-Gurion University of the Negev; Beer Sheva 84105 Israel
| | - Doron Pappo
- Department of Chemistry; Ben-Gurion University of the Negev; Beer Sheva 84105 Israel
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23
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Gaster E, Kozuch S, Pappo D. Selective Aerobic Oxidation of Methylarenes to Benzaldehydes Catalyzed by N
-Hydroxyphthalimide and Cobalt(II) Acetate in Hexafluoropropan-2-ol. Angew Chem Int Ed Engl 2017; 56:5912-5915. [DOI: 10.1002/anie.201702511] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Eden Gaster
- Department of Chemistry; Ben-Gurion University of the Negev; Beer Sheva 84105 Israel
| | - Sebastian Kozuch
- Department of Chemistry; Ben-Gurion University of the Negev; Beer Sheva 84105 Israel
| | - Doron Pappo
- Department of Chemistry; Ben-Gurion University of the Negev; Beer Sheva 84105 Israel
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24
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Yoshino T, Matsunaga S. (Pentamethylcyclopentadienyl)cobalt(III)-Catalyzed C-H Bond Functionalization: From Discovery to Unique Reactivity and Selectivity. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700042] [Citation(s) in RCA: 356] [Impact Index Per Article: 50.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences; Hokkaido University; Sapporo 060-0812 Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences; Hokkaido University; Sapporo 060-0812 Japan
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25
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Hollóczki O, Berkessel A, Mars J, Mezger M, Wiebe A, Waldvogel SR, Kirchner B. The Catalytic Effect of Fluoroalcohol Mixtures Depends on Domain Formation. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03090] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oldamur Hollóczki
- Mulliken
Center for Theoretical Chemistry, University of Bonn, Beringstr. 4
+ 6, D-53115 Bonn, Germany
| | | | - Julian Mars
- Institute
of Physics, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Markus Mezger
- Institute
of Physics, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Anton Wiebe
- Institute
of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg
10-14, 55128 Mainz, Germany
| | - Siegfried R. Waldvogel
- Institute
of Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg
10-14, 55128 Mainz, Germany
| | - Barbara Kirchner
- Mulliken
Center for Theoretical Chemistry, University of Bonn, Beringstr. 4
+ 6, D-53115 Bonn, Germany
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26
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Možina Š, Stavber S, Iskra J. Dual Catalysis for the Aerobic Oxidation of Benzyl Alcohols - Nitric Acid and Fluorinated Alcohol. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601339] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Štefan Možina
- Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins; Jamova cesta 39 1000 Ljubljana Slovenia
- Jožef Stefan International Postgraduate School; Jamova cesta 39 1000 Ljubljana Slovenia
| | - Stojan Stavber
- Department of Physical and Organic Chemistry; Jožef Stefan Institute; Jamova cesta 39 1000 Ljubljana Slovenia
- Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins; Jamova cesta 39 1000 Ljubljana Slovenia
| | - Jernej Iskra
- Department of Physical and Organic Chemistry; Jožef Stefan Institute; Jamova cesta 39 1000 Ljubljana Slovenia
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; Večna pot 113 1000 Ljubljana Slovenia
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27
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Lebœuf D, Marin L, Michelet B, Perez-Luna A, Guillot R, Schulz E, Gandon V. Harnessing the Lewis Acidity of HFIP through its Cooperation with a Calcium(II) Salt: Application to the Aza-Piancatelli Reaction. Chemistry 2016; 22:16165-16171. [DOI: 10.1002/chem.201603592] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 01/05/2023]
Affiliation(s)
- David Lebœuf
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
| | - Lucile Marin
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
| | - Bastien Michelet
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
| | - Alejandro Perez-Luna
- Sorbonne Universités; UPMC Univ. Paris 6; Institut Parisien de Chimie Moléculaire (IPCM); CNRS UMR 8232; 4, place Jussieu 75005 Paris France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
| | - Emmanuelle Schulz
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); CNRS UMR 8182; Université Paris-Sud; Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
- Institut de Chimie des Substances Naturelles (ICSN); CNRS UPR 2301; Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
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28
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Computationally designed zirconium organometallic catalyst for direct epoxidation of alkenes without allylic H atoms: aromatic linkage eliminates formation of inert octahedral complexes. Theor Chem Acc 2016. [DOI: 10.1007/s00214-015-1789-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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29
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Carraro M, Gardan M, Sartorel A, Maccato C, Bonchio M. Hydrogen peroxide activation by fluorophilic polyoxotungstates for fast and selective oxygen transfer catalysis. Dalton Trans 2016; 45:14544-8. [DOI: 10.1039/c6dt01951j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyoxometalate (POM)-based polyanionic fluorosurfactants self-assemble in hexafluoroisopropanol (HFIP) and activate hydrogen peroxide (H2O2), yielding efficient epoxidation of terminal alkenes.
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Affiliation(s)
- Mauro Carraro
- ITM-CNR and Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
| | - Martino Gardan
- ITM-CNR and Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
| | - Andrea Sartorel
- ITM-CNR and Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
| | - Chiara Maccato
- ITM-CNR and Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
| | - Marcella Bonchio
- ITM-CNR and Department of Chemical Sciences
- University of Padova
- 35131 Padova
- Italy
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30
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Liu J, Wang L, Wang X, Xu L, Hao Z, Xiao J. Fluorinated alcohol-mediated [4 + 3] cycloaddition reaction of indolyl alcohols with cyclopentadiene. Org Biomol Chem 2016; 14:11510-11517. [DOI: 10.1039/c6ob01953f] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes a catalyst- and additive-free, [4 + 3] cycloaddition reaction of 3-indolylmethanols with cyclopentadiene in HFIP, producing cyclohepta[b]indole derivatives in high yields and with wide substrate scope.
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Affiliation(s)
- Jian Liu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Xiaoxiao Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Zhihui Hao
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Jian Xiao
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
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31
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Wen H, Wang L, Xu L, Hao Z, Shao CL, Wang CY, Xiao J. Fluorinated Alcohol-Mediated SN1-Type Reaction of Indolyl Alcohols with Diverse Nucleophiles. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500500] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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32
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Libman A, Shalit H, Vainer Y, Narute S, Kozuch S, Pappo D. Synthetic and Predictive Approach to Unsymmetrical Biphenols by Iron-Catalyzed Chelated Radical–Anion Oxidative Coupling. J Am Chem Soc 2015; 137:11453-60. [DOI: 10.1021/jacs.5b06494] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Anna Libman
- Department
of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Hadas Shalit
- Department
of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Yulia Vainer
- Department
of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Sachin Narute
- Department
of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Sebastian Kozuch
- Department
of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Doron Pappo
- Department
of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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33
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34
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Gaster E, Vainer Y, Regev A, Narute S, Sudheendran K, Werbeloff A, Shalit H, Pappo D. Significant Enhancement in the Efficiency and Selectivity of Iron-Catalyzed Oxidative Cross-Coupling of Phenols by Fluoroalcohols. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409694] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Gaster E, Vainer Y, Regev A, Narute S, Sudheendran K, Werbeloff A, Shalit H, Pappo D. Significant Enhancement in the Efficiency and Selectivity of Iron-Catalyzed Oxidative Cross-Coupling of Phenols by Fluoroalcohols. Angew Chem Int Ed Engl 2015; 54:4198-202. [DOI: 10.1002/anie.201409694] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 11/18/2014] [Indexed: 01/09/2023]
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36
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Khaksar S, Gholami M. An eco-benign and highly efficient access to dihydro-1H-indeno[1,2-b]pyridines in 2,2,2-trifluoroethanol. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.03.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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37
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Steenackers B, Neirinckx A, De Cooman L, Hermans I, De Vos D. The strained sesquiterpene β-caryophyllene as a probe for the solvent-assisted epoxidation mechanism. Chemphyschem 2014; 15:966-73. [PMID: 24615908 DOI: 10.1002/cphc.201300981] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Indexed: 11/10/2022]
Abstract
In our attempt to synthesize β-caryophyllene oxide in food-compatible conditions, we observed the uncatalyzed and highly selective epoxidation of β-caryophyllene, a strained bicyclic sesquiterpene, in ethanol with aqueous H2 O2 under radical-suppressing conditions without the addition of a catalyst. The unusual reactivity of β-caryophyllene allowed us to use it as a probe for the mechanism of the solvent-assisted epoxidation in a wide range of organic solvents. A kinetic study was performed to investigate the epoxidation mechanism; an excellent correlation was found between the observed epoxidation rates in different solvents and the Abraham's hydrogen bond formation parameters of these solvents. By means of computational analysis, it was found that the main role of the solvent consists of the stabilization of the elongated OO bond of H2 O2 in the transition state through hydrogen-bond donation to the leaving OH moiety of H2 O2 . α-Humulene was found to possess similar reactivity as β-caryophyllene whereas isocaryophyllene-the unstrained isomer of β-caryophyllene-was unreactive.
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Affiliation(s)
- Bart Steenackers
- Centre for Surface Science and Catalysis, KU Leuven, Kasteelpark Arenberg 23, 3001 Leuven (Belgium), Fax: (+32) 6321998
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38
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Manz TA, Yang B. Selective oxidation passing through η3-ozone intermediates: applications to direct propene epoxidation using molecular oxygen oxidant. RSC Adv 2014. [DOI: 10.1039/c4ra03729d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
An unprecedented catalytic route for selective oxidation is designed that passes through η3-ozone intermediates and uses molecular oxygen as the oxidant without requiring a coreductant. DFT-computed reaction cycles identify a new catalyst type with the lowest computed overall activation energy for direct propene epoxidation for any catalyst to date.
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Affiliation(s)
- Thomas A. Manz
- Chemical Engineering Department
- New Mexico State University
- Las Cruces, USA
| | - Bo Yang
- Chemical Engineering Department
- New Mexico State University
- Las Cruces, USA
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39
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Lebleu T, Ma X, Maddaluno J, Legros J. Selective monomethylation of primary amines with simple electrophiles. Chem Commun (Camb) 2014; 50:1836-8. [DOI: 10.1039/c3cc48997c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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40
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New examples of template catalysis based processes: glycerol-like units as efficient promoters for dehydrative nucleophilic substitutions of ferrocenylmethanol. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Kumar D, Latifi R, Kumar S, Rybak-Akimova EV, Sainna MA, de Visser SP. Rationalization of the Barrier Height for p-Z-styrene Epoxidation by Iron(IV)-Oxo Porphyrin Cation Radicals with Variable Axial Ligands. Inorg Chem 2013; 52:7968-79. [DOI: 10.1021/ic4005104] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Devesh Kumar
- Department of Applied Physics, School of Physical Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar,
Rae Bareilly Road, Lucknow 226-025, India
| | - Reza Latifi
- Manchester Institute of Biotechnology and School
of Chemical Engineering and Analytical Science, University of Manchester, 131 Princess Street, Manchester M1 7DN,
U.K
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United
States
| | - Suresh Kumar
- Department of Applied Physics, School of Physical Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar,
Rae Bareilly Road, Lucknow 226-025, India
| | | | - Mala A. Sainna
- Manchester Institute of Biotechnology and School
of Chemical Engineering and Analytical Science, University of Manchester, 131 Princess Street, Manchester M1 7DN,
U.K
| | - Sam P. de Visser
- Manchester Institute of Biotechnology and School
of Chemical Engineering and Analytical Science, University of Manchester, 131 Princess Street, Manchester M1 7DN,
U.K
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42
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Polyfluorinated mercaptoalcohol as a H-bond modifier of poly(2,3,4,5,6-pentafluorostyrene) (PPFS) enhancing miscibility of hydroxylated-PPFS with various acceptor polymers. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.05.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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Wang B, Li C, Cho KB, Nam W, Shaik S. The FeIII(H2O2) Complex as a Highly Efficient Oxidant in Sulfoxidation Reactions: Revival of an Underrated Oxidant in Cytochrome P450. J Chem Theory Comput 2013; 9:2519-25. [DOI: 10.1021/ct400190f] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Binju Wang
- Institute of Chemistry and the
Lise Meitner-Minerva Center for Computational Quantum Chemistry, The
Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Chunsen Li
- Institute of Chemistry and the
Lise Meitner-Minerva Center for Computational Quantum Chemistry, The
Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Kyung-Bin Cho
- Department of Bioinspired Science,
Ewha Womans University, Seoul 120-750, Korea
| | - Wonwoo Nam
- Department of Bioinspired Science,
Ewha Womans University, Seoul 120-750, Korea
| | - Sason Shaik
- Institute of Chemistry and the
Lise Meitner-Minerva Center for Computational Quantum Chemistry, The
Hebrew University of Jerusalem, 91904 Jerusalem, Israel
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44
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Li C, Shaik S. How Do Perfluorinated Alkanoic Acids Elicit Cytochrome P450 to Catalyze Methane Hydroxylation? An MD and QM/MM Study. RSC Adv 2013; 3:2995-3005. [PMID: 23682310 DOI: 10.1039/c2ra22294a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Recent experimental studies show that usage of perfluoro decanoic acid (PFDA), as a dummy substrate, can elicit P450BM3 to perform hydroxylation of small alkanes, such as methane (ref. 17) and propane (ref. 17 and ref. 18). To comprehend the mechanism whereby PFDA operates to potentiate P450BM3 to catalyze the hydroxylation of small alkanes, we used molecular dynamics (MD) and hybrid quantum mechanical / molecular mechanical (QM/MM) calculations. The MD results show that without the PFDA, methane escapes the active site, while the presence of PFDA can potentially induce a productive Cpd I-Methane juxtaposition for rapid oxidation. Nevertheless, when only a single methane molecule is present near the PFDA, it still escapes the pocket within less than a nanosecond. However, when three methane molecules are present in the pocket, they alternate quasi-periodically such that at all times (within 10 ns), a molecule of methane is always present in the proximity of Cpd I in a reactive conformation. Our results further demonstrate that the PFDA does not exert any electrostatic catalysis, whether the PFDA is in the protonated or deprotonated forms. Taken together, we conclude that methane hydroxylation requires, in addition to PFDA, a high partial pressure of methane that will cause a high methane concentration in the active site. Further study of ethane and propane hydroxylations demonstrates that higher alkane concentration is helpful for all the three small alkanes. Thus for the smallest alkane, methane, at least three molecules are necessary whereas for the larger ethane, two molecules are needed to force one ethane to be closer to Cpd I. Finally, for propane a second molecule is helpful but not absolutely necessary; for this molecule the PFDA may well be sufficient to keep propane close to Cpd I for efficient oxidation. We therefore propose that high alkane pressure should assist small alkane hydroxylation by P450 in a manner inversely proportional to the size of the alkanes.
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Affiliation(s)
- Chunsen Li
- Institute of Chemistry and the Lise-Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
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45
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de Torres M, Jiménez-Osés G, Mayoral JA, Pires E, Blanco RM, Fernández O. Evaluation of several catalytic systems for the epoxidation of methyl oleate using H2O2 as oxidant. Catal Today 2012. [DOI: 10.1016/j.cattod.2012.05.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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46
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Morozov AN, Chatfield DC. Chloroperoxidase-catalyzed epoxidation of cis-β-methylstyrene: distal pocket flexibility tunes catalytic reactivity. J Phys Chem B 2012; 116:12905-14. [PMID: 23020548 DOI: 10.1021/jp302763h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chloroperoxidase, the most versatile heme protein, has a hybrid active site pocket that shares structural features with peroxidases and cytochrome P450s. The simulation studies presented here show that the enzyme possesses a remarkable ability to efficiently utilize its hybrid structure, assuming structurally different peroxidase-like and P450-like distal pocket faces and thereby enhancing the inherent catalytic capability of the active center. We find that, during epoxidation of cis-β-methylstyrene (CBMS), the native peroxidase-like aspect of the distal pocket is diminished as the polar Glu183 side chain is displaced away from the active center and the distal pocket takes on a more hydrophobic, P450-like, aspect. The P450-like distal pocket provides a significant enthalpic stabilization of ∼4 kcal/mol of the 14 kcal/mol reaction barrier for gas-phase epoxidation of CMBS by an oxyferryl heme-thiolate species. This stabilization comes from breathing of the distal pocket. As until recently the active site of chloroperoxidase was postulated to be inflexible, these results suggest a new conceptual understanding of the enzyme's versatility: catalytic reactivity is tuned by flexibility of the distal pocket.
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Affiliation(s)
- Alexander N Morozov
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States.
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47
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Bednarz S, Ryś B, Bogdał D. Application of Hydrogen Peroxide Encapsulated in Silica Xerogels to Oxidation Reactions. Molecules 2012; 17:8068-78. [PMID: 22763743 PMCID: PMC6268296 DOI: 10.3390/molecules17078068] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Revised: 06/18/2012] [Accepted: 06/25/2012] [Indexed: 11/16/2022] Open
Affiliation(s)
- Szczepan Bednarz
- Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland.
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Vuluga D, Legros J, Crousse B, Slawin AMZ, Laurence C, Nicolet P, Bonnet-Delpon D. Influence of the Structure of Polyfluorinated Alcohols on Brønsted Acidity/Hydrogen-Bond Donor Ability and Consequences on the Promoter Effect. J Org Chem 2011; 76:1126-33. [DOI: 10.1021/jo1023816] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Daniela Vuluga
- Laboratoire BioCIS-CNRS, Faculté de Pharmacie, Univ. Paris Sud, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry, France
| | - Julien Legros
- Laboratoire BioCIS-CNRS, Faculté de Pharmacie, Univ. Paris Sud, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry, France
| | - Benoit Crousse
- Laboratoire BioCIS-CNRS, Faculté de Pharmacie, Univ. Paris Sud, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry, France
| | - Alexandra M. Z. Slawin
- Molecular Structure Laboratory, School of Chemistry, University of St. Andrews, St. Andrews, Fife KY16 9ST, United Kingdom
| | - Christian Laurence
- CEISAM CNRS UMR 6230, Faculté des Sciences et des Techniques, Univ. Nantes, 2 rue de la Houssinière, F-44322 Nantes, France
| | - Pierre Nicolet
- CEISAM CNRS UMR 6230, Faculté des Sciences et des Techniques, Univ. Nantes, 2 rue de la Houssinière, F-44322 Nantes, France
| | - Danièle Bonnet-Delpon
- Laboratoire BioCIS-CNRS, Faculté de Pharmacie, Univ. Paris Sud, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry, France
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García-Marín H, van der Toorn JC, Mayoral JA, García JI, Arends IWE. Epoxidation of cyclooctene and cyclohexene with hydrogen peroxide catalyzed by bis[3,5-bis(trifluoromethyl)-diphenyl] diselenide: Recyclable catalyst-containing phases through the use of glycerol-derived solvents. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcata.2010.10.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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De K, Legros J, Crousse B, Chandrasekaran S, Bonnet-Delpon D. Synthesis of substituted 8-aminoquinolines and phenanthrolines through a Povarov approach. Org Biomol Chem 2011; 9:347-50. [DOI: 10.1039/c0ob00496k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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