1
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Yu K, Ward TR. C-H functionalization reactions catalyzed by artificial metalloenzymes. J Inorg Biochem 2024; 258:112621. [PMID: 38852295 DOI: 10.1016/j.jinorgbio.2024.112621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/23/2024] [Accepted: 05/25/2024] [Indexed: 06/11/2024]
Abstract
CH functionalization, a promising frontier in modern organic chemistry, facilitates the direct conversion of inert CH bonds into many valuable functional groups. Despite its merits, traditional homogeneous catalysis, often faces challenges in efficiency, selectivity, and sustainability towards this transformation. In this context, artificial metalloenzymes (ArMs), resulting from the incorporation of a catalytically-competent metal cofactor within an evolvable protein scaffold, bridges the gap between the efficiency of enzymatic transformations and the versatility of transition metal catalysis. Accordingly, ArMs have emerged as attractive tools for various challenging catalytic transformations. Additionally, the coming of age of directed evolution has unlocked unprecedented avenues for optimizing enzymatic catalysis. Taking advantage of their genetically-encoded protein scaffold, ArMs have been evolved to catalyze various CH functionalization reactions. This review delves into the recent developments of ArM-catalyzed CH functionalization reactions, highlighting the benefits of engineering the second coordination sphere around a metal cofactor within a host protein.
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Affiliation(s)
- Kun Yu
- Department of Chemistry, University of Basel, Mattenstrasse 22, Basel CH-4058, Switzerland
| | - Thomas R Ward
- Department of Chemistry, University of Basel, Mattenstrasse 22, Basel CH-4058, Switzerland.
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2
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Zeng M, Chen JL, Luo X, Zou YJ, Liu ZN, Dai J, Jiang DZ, Li JJ. Oxygen-Free Csp 3-H Oxidation of Pyridin-2-yl-methanes to Pyridin-2-yl-methanones with Water by Copper Catalysis. Molecules 2023; 28:7587. [PMID: 38005308 PMCID: PMC10673412 DOI: 10.3390/molecules28227587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/03/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Aromatic ketones are important pharmaceutical intermediates, especially the pyridin-2-yl-methanone motifs. Thus, synthetic methods for these compounds have gained extensive attention in the last few years. Transition metals catalyze the oxidation of Csp3-H for the synthesis of aromatic ketones, which is arresting. Here, we describe an efficient copper-catalyzed synthesis of pyridin-2-yl-methanones from pyridin-2-yl-methanes through a direct Csp3-H oxidation approach with water under mild conditions. Pyridin-2-yl-methanes with aromatic rings, such as substituted benzene, thiophene, thiazole, pyridine, and triazine, undergo the reaction well to obtain the corresponding products in moderate to good yields. Several controlled experiments are operated for the mechanism exploration, indicating that water participates in the oxidation process, and it is the single oxygen source in this transformation. The current work provides new insights for water-involving oxidation reactions.
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Affiliation(s)
- Ming Zeng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China; (M.Z.)
| | - Jia-Le Chen
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China; (M.Z.)
| | - Xue Luo
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China; (X.L.)
| | - Yan-Jiao Zou
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China; (M.Z.)
| | - Zhao-Ning Liu
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China; (X.L.)
| | - Jun Dai
- Analytical and Testing Center, Jiujiang University, Jiujiang 332005, China
| | - Deng-Zhao Jiang
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China; (M.Z.)
- Jiujiang Key Laboratory for the Development and Utilization of Traditional Chinese Medicine Resources in Northwest Jiangxi, Jiujiang 332005, China
| | - Jin-Jing Li
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China; (X.L.)
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3
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Selective electrochemical oxidation of aromatic hydrocarbons and preparation of mono/multi-carbonyl compounds. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1061-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Li S, Zhou R, Zhao W, Du H. Synthesis of novel acyclic and multiple phenyl iron tetraamino ligand catalysts and its catalytic activity for degradation of dye wastewater by H
2
O
2. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shun‐Lai Li
- College of Chemistry Beijing University of Chemical Technology Beijing China
| | - Run Zhou
- College of Chemistry Beijing University of Chemical Technology Beijing China
| | - Wei‐Jing Zhao
- College of Chemistry Beijing University of Chemical Technology Beijing China
| | - Hong‐Guang Du
- College of Chemistry Beijing University of Chemical Technology Beijing China
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5
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Li J, Fang F, Wang R, Li Y, Xu B, Liu H, Zhou Y. A Rh(iii)-catalyzed C–H activation/regiospecific annulation cascade of benzoic acids with propargyl acetates to unusual 3-alkylidene-isochromanones. Org Chem Front 2021. [DOI: 10.1039/d1qo00387a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a new approach to synthesize isochromanones with benzoic acids and propargyl acetates, which introducing an unusual exocyclic C–C double bond at the 3-position with high regioselectivity and moderate to excellent yields.
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Affiliation(s)
- Jiyuan Li
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
- State Key Laboratory of Drug Research
| | - Feifei Fang
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Run Wang
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Yuan Li
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Bin Xu
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Hong Liu
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Yu Zhou
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
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6
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Serrano-Plana J, Rumo C, Rebelein JG, Peterson RL, Barnet M, Ward TR. Enantioselective Hydroxylation of Benzylic C(sp 3)-H Bonds by an Artificial Iron Hydroxylase Based on the Biotin-Streptavidin Technology. J Am Chem Soc 2020; 142:10617-10623. [PMID: 32450689 PMCID: PMC7332155 DOI: 10.1021/jacs.0c02788] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The selective hydroxylation of C–H
bonds is of great interest
to the synthetic community. Both homogeneous catalysts and enzymes
offer complementary means to tackle this challenge. Herein, we show
that biotinylated Fe(TAML)-complexes (TAML = Tetra Amido Macrocyclic
Ligand) can be used as cofactors for incorporation into streptavidin
to assemble artificial hydroxylases. Chemo-genetic optimization of
both cofactor and streptavidin allowed optimizing the performance
of the hydroxylase. Using H2O2 as oxidant, up
to ∼300 turnovers for the oxidation of benzylic C–H
bonds were obtained. Upgrading the ee was achieved by kinetic resolution
of the resulting benzylic alcohol to afford up to >98% ee for (R)-tetralol. X-ray analysis of artificial hydroxylases highlights
critical details of the second coordination sphere around the Fe(TAML)
cofactor.
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Affiliation(s)
- Joan Serrano-Plana
- Department of Chemistry, University of Basel, BPR1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland
| | - Corentin Rumo
- Department of Chemistry, University of Basel, BPR1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland
| | - Johannes G Rebelein
- Department of Chemistry, University of Basel, BPR1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland
| | - Ryan L Peterson
- Department of Chemistry, University of Basel, BPR1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland.,Department of Chemistry and Biochemistry, Texas State University, 78666 Texas, United States
| | - Maxime Barnet
- Department of Chemistry, University of Basel, BPR1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland
| | - Thomas R Ward
- Department of Chemistry, University of Basel, BPR1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland
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7
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Lubov DP, Talsi EP, Bryliakov KP. Methods for selective benzylic C–H oxofunctionalization of organic compounds. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4918] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Dantignana V, Company A, Costas M. Oxoiron(V) Complexes of Relevance in Oxidation Catalysis of Organic Substrates. Isr J Chem 2020. [DOI: 10.1002/ijch.201900161] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Valeria Dantignana
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química Universitat de Girona C/M. Aurèlia Capmany 69 17003 Girona, Catalonia Spain
| | - Anna Company
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química Universitat de Girona C/M. Aurèlia Capmany 69 17003 Girona, Catalonia Spain
| | - Miquel Costas
- Grup de Química Bioinspirada, Supramolecular i Catàlisi (QBIS-CAT), Institut de Química Computacional i Catàlisi (IQCC), Departament de Química Universitat de Girona C/M. Aurèlia Capmany 69 17003 Girona, Catalonia Spain
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9
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Jayram J, Xulu BA, Jeena V. Iodine/DMSO promoted oxidation of benzylic Csp3–H bonds to diketones – A mechanistic investigation. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130617] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Tan J, Liu XB, Chen WF, Hu YL. Synthesis of Magnetically Separable Nanocatalyst CoFe2O4@SiO
2
@MIL‐53(Fe) for Highly Efficient and Selective Oxidation of Alcohols and Benzylic Compounds with Hydrogen Peroxide. ChemistrySelect 2019. [DOI: 10.1002/slct.201901690] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jin Tan
- College of Materials and Chemical EngineeringKey laboratory of inorganic nonmetallic crystalline and energy conversion materialsChina Three Gorges University Yichang 443002, Hubei province P. R. China
| | - Xiao Bing Liu
- College of Chemistry and Chemical EngineeringJinggangshan University Ji'an 343009 P. R. China
| | - Wei Feng Chen
- College of Materials and Chemical EngineeringKey laboratory of inorganic nonmetallic crystalline and energy conversion materialsChina Three Gorges University Yichang 443002, Hubei province P. R. China
| | - Yu Lin Hu
- College of Materials and Chemical EngineeringKey laboratory of inorganic nonmetallic crystalline and energy conversion materialsChina Three Gorges University Yichang 443002, Hubei province P. R. China
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11
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Wegeberg C, Browne WR, McKenzie CJ. Catalytic Alkyl Hydroperoxide and Acyl Hydroperoxide Disproportionation by a Nonheme Iron Complex. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02882] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Christina Wegeberg
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Wesley R. Browne
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Christine J. McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
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12
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Xu R, Gu J, Zhong W, Liu Z, Cui Q, Wang H. Liquid‐Phase Oxidation Reaction and Mechanism of
p
‐Diethylbenzene to
p
‐Ethylacetophenone with H
2
O
2
in a Batch Reactor and a Fixed Bed Reactor. ChemistrySelect 2018. [DOI: 10.1002/slct.201801181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ruxia Xu
- Department of Chemical EngineeringNanjing Tech University No. 5 Xinmofan Road Nanjing 210009 P. R. China
| | - Jing Gu
- Department of Chemical EngineeringNanjing Tech University No. 5 Xinmofan Road Nanjing 210009 P. R. China
| | - Wen Zhong
- Department of Chemical EngineeringNanjing Tech University No. 5 Xinmofan Road Nanjing 210009 P. R. China
| | - Zongjian Liu
- Department of Chemical EngineeringNanjing Tech University No. 5 Xinmofan Road Nanjing 210009 P. R. China
| | - Qun Cui
- Department of Chemical EngineeringNanjing Tech University No. 5 Xinmofan Road Nanjing 210009 P. R. China
| | - Haiyan Wang
- Department of Chemical EngineeringNanjing Tech University No. 5 Xinmofan Road Nanjing 210009 P. R. China
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13
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Pankhurst JR, Curcio M, Sproules S, Lloyd-Jones GC, Love JB. Earth-Abundant Mixed-Metal Catalysts for Hydrocarbon Oxygenation. Inorg Chem 2018; 57:5915-5928. [DOI: 10.1021/acs.inorgchem.8b00420] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- James R. Pankhurst
- EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, U.K
| | - Massimiliano Curcio
- EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, U.K
| | - Stephen Sproules
- WestCHEM School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Guy C. Lloyd-Jones
- EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, U.K
| | - Jason B. Love
- EaStCHEM School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, U.K
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14
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Tian X, Ren F, Zhao B, Ren YL, Zhao S, Wang J. Nitric acid-catalyzed aerobic oxidation of benzylic sp3 C H bonds of isochromans, xanthenes and 9-fluorenone under additive-free conditions. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2017.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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15
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Liu J, Hu KF, Qu JP, Kang YB. Organopromoted Selectivity-Switchable Synthesis of Polyketones. Org Lett 2017; 19:5593-5596. [DOI: 10.1021/acs.orglett.7b02731] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jie Liu
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Kang-Fei Hu
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jian-Ping Qu
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Biao Kang
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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16
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Affiliation(s)
- Eike B. Bauer
- University of Missouri - St. Louis; Department of Chemistry and Biochemistry; One University Boulevard St. Louis, MO 63121 USA
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17
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Malekafzali A, Malinovska K, Patureau FW. The cumene/O 2 system: a very simple tool for the radical chain oxidation of some functional groups. NEW J CHEM 2017; 41:6981-6985. [PMID: 30450001 PMCID: PMC6208464 DOI: 10.1039/c7nj01666b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 06/27/2017] [Indexed: 11/21/2022]
Abstract
Due to the relative stability of the cumyl radical, cumenes and α-methyl-styrenes are ideally structured to directly harvest the oxidizing reactivity of O2 and initiate radical chain reactions in catalyst-free conditions. In the absence of additional substrates, these processes can lead to acetophenones. In the presence of substrates, the cumene oxidation process can be intercepted in various chain reactions, affording very simple protocols for functional group oxidation.
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Affiliation(s)
- A Malekafzali
- FB Chemie , Technische Universiät Kaiserslautern , Erwin-Schrödinger Str. 52 , 67663 Kaiserslautern , Germany . ; http://www.chemie.uni-kl.de/patureau
- Chemistry Department , Tarbiat Modares University , Jalale-Ale-Ahmad Highway , 14117-13116 Tehran , Iran
| | - K Malinovska
- FB Chemie , Technische Universiät Kaiserslautern , Erwin-Schrödinger Str. 52 , 67663 Kaiserslautern , Germany . ; http://www.chemie.uni-kl.de/patureau
| | - F W Patureau
- FB Chemie , Technische Universiät Kaiserslautern , Erwin-Schrödinger Str. 52 , 67663 Kaiserslautern , Germany . ; http://www.chemie.uni-kl.de/patureau
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18
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Collins TJ, Ryabov AD. Targeting of High-Valent Iron-TAML Activators at Hydrocarbons and Beyond. Chem Rev 2017; 117:9140-9162. [PMID: 28488444 DOI: 10.1021/acs.chemrev.7b00034] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
TAML activators of peroxides are iron(III) complexes. The ligation by four deprotonated amide nitrogens in macrocyclic motifs is the signature of TAMLs where the macrocyclic structures vary considerably. TAML activators are exceptional functional replicas of the peroxidases and cytochrome P450 oxidizing enzymes. In water, they catalyze peroxide oxidation of a broad spectrum of compounds, many of which are micropollutants, compounds that produce undesired effects at low concentrations-as with the enzymes, peroxide is typically activated with near-quantitative efficiency. In nonaqueous solvents such as organic nitriles, the prototype TAML activator gave the structurally authenticated reactive iron(V)oxo units (FeVO), wherein the iron atom is two oxidation equivalents above the FeIII resting state. The iron(V) state can be achieved through the intermediacy of iron(IV) species, which are usually μ-oxo-bridged dimers (FeIVFeIV), and this allows for the reactivity of this potent reactive intermediate to be studied in stoichiometric processes. The present review is primarily focused at the mechanistic features of the oxidation by FeVO of hydrocarbons including cyclohexane. The main topic is preceded by a description of mechanisms of oxidation of thioanisoles by FeVO, because the associated studies provide valuable insight into the ability of FeVO to oxidize organic molecules. The review is opened by a summary of the interconversions between FeIII, FeIVFeIV, and FeVO species, since this information is crucial for interpreting the kinetic data. The highest reactivity in both reaction classes described belongs to FeVO. The resting state FeIII is unreactive oxidatively. Intermediate reactivity is typically found for FeIVFeIV; therefore, kinetic features for these species in interchange and oxidation processes are also reviewed. Examples of using TAML activators for C-H bond cleavage applied to fine organic synthesis conclude the review.
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Affiliation(s)
- Terrence J Collins
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D Ryabov
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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19
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Hong C, Ma J, Li M, Jin L, Hu X, Mo W, Hu B, Sun N, Shen Z. Ferric nitrate-catalyzed aerobic oxidation of benzylic sp 3 C H bonds of ethers and alkylarenes. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.04.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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20
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Song Y, Mayes HG, Queensen MJ, Bauer EB, Dupureur CM. Spectroscopic investigation and direct comparison of the reactivities of iron pyridyl oxidation catalysts. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:130-137. [PMID: 27889672 DOI: 10.1016/j.saa.2016.11.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 11/06/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023]
Abstract
The growing interest in green chemistry has fueled attention to the development and characterization of effective iron complex oxidation catalysts. A number of iron complexes are known to catalyze the oxidation of organic substrates utilizing peroxides as the oxidant. Their development is complicated by a lack of direct comparison of the reactivities of the iron complexes. To begin to correlate reactivity with structural elements, we compare the reactivities of a series of iron pyridyl complexes toward a single dye substrate, malachite green (MG), for which colorless oxidation products are established. Complexes with tetradentate, nitrogen-based ligands with cis open coordination sites were found to be the most reactive. While some complexes reflect sensitivity to different peroxides, others are similarly reactive with either H2O2 or tBuOOH, which suggests some mechanistic distinctions. [Fe(S,S-PDP)(CH3CN)2](SbF6)2 and [Fe(OTf)2(tpa)] transition under the oxidative reaction conditions to a single intermediate at a rate that exceeds dye degradation (PDP=bis(pyridin-2-ylmethyl) bipyrrolidine; tpa=tris(2-pyridylmethyl)amine). For the less reactive [Fe(OTf)2(dpa)] (dpa=dipicolylamine), this reaction occurs on a timescale similar to that of MG oxidation. Thus, the spectroscopic method presented herein provides information about the efficiency and mechanism of iron catalyzed oxidation reactions as well as about potential oxidative catalyst decomposition and chemical changes of the catalyst before or during the oxidation reaction.
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Affiliation(s)
- Yang Song
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Howard G Mayes
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Matthew J Queensen
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States
| | - Eike B Bauer
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States.
| | - Cynthia M Dupureur
- Department of Chemistry & Biochemistry, University of Missouri St. Louis, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri St. Louis, St. Louis, MO 63121, United States.
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21
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Zhang Y, Zhao L, Zhang H, Huang R, Zhao J. Oxidation of alkanes and secondary alcohols to ketones with tert
-butyl hydroperoxide catalyzed by a water-soluble ruthenium complex under solvent-free conditions. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3709] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yuecheng Zhang
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 People's Republic of China
| | - Liyuan Zhao
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 People's Republic of China
| | - Hongyu Zhang
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 People's Republic of China
| | - Rong Huang
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 People's Republic of China
| | - Jiquan Zhao
- School of Chemical Engineering and Technology; Hebei University of Technology; Tianjin 300130 People's Republic of China
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22
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Liu F, Zhang K, Liu Y, Chen S, Chen Y, Zhang D, Lin C, Wang B. Solvent-free one-pot oxidation of ethylarenes for the preparation of α-ketoamides under mild conditions. RSC Adv 2017. [DOI: 10.1039/c6ra26679g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here we developed a highly efficient solvent-free, one-pot procedure for synthesizing α-ketoamides from ethylarenes and amines, by oxidizing a C–H bond sp3 center.
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Affiliation(s)
- Fuyan Liu
- State Key Lab of Marine Resource Utilisation in South China Sea
- Hainan University
- Haikou 570228
- PR China
| | - Kuan Zhang
- State Key Lab of Marine Resource Utilisation in South China Sea
- Hainan University
- Haikou 570228
- PR China
| | - Yanfeng Liu
- State Key Lab of Marine Resource Utilisation in South China Sea
- Hainan University
- Haikou 570228
- PR China
| | - Shan Chen
- Institute of Chemical Engineering
- College of Materials and Chemical Engineering
- Hainan University
- Haikou 570228
- PR China
| | - Yiping Chen
- State Key Lab of Marine Resource Utilisation in South China Sea
- Hainan University
- Haikou 570228
- PR China
| | - Dela Zhang
- State Key Lab of Marine Resource Utilisation in South China Sea
- Hainan University
- Haikou 570228
- PR China
| | - Chunfu Lin
- State Key Lab of Marine Resource Utilisation in South China Sea
- Hainan University
- Haikou 570228
- PR China
- Institute of Chemical Engineering
| | - Bo Wang
- State Key Lab of Marine Resource Utilisation in South China Sea
- Hainan University
- Haikou 570228
- PR China
- Institute of Chemical Engineering
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23
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Mills MR, Weitz AC, Zhang DZ, Hendrich MP, Ryabov AD, Collins TJ. A "Beheaded" TAML Activator: A Compromised Catalyst that Emphasizes the Linearity between Catalytic Activity and pK a. Inorg Chem 2016; 55:12263-12269. [PMID: 27934426 DOI: 10.1021/acs.inorgchem.6b01988] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Studies of the new tetra-amido macrocyclic ligand (TAML) activator [FeIII{(Me2CNCOCMe2NCO)2CMe2}OH2]- (4) in water in the pH range of 2-13 suggest its pseudo-octahedral geometry with two nonequivalent axial H2O ligands and revealed (i) the anticipated basic drift of the first pKa of water to 11.38 due to four electron-donating methyl groups alongside (ii) its counterintuitive enhanced resistance to acid-induced iron(III) ejection from the macrocycle. The catalytic activity of 4 in the oxidation of Orange II (S) by H2O2 in the pH range of 7-12 is significantly lower than that of previously reported TAML activators, though it follows the common rate law (v/[FeIII] = kIkII[H2O2][S]/(kI[H2O2] + kII[S]) and typical pH profiles for kI and kII. At pH 7 and 25 °C the rate constants kI and kII equal 0.63 ± 0.02 and 1.19 ± 0.03 M-1 s-1, respectively. With these new values for pKa, kI and kII establishing new high and low limits, respectively, the rate constants kI and kII were correlated with pKa values of all TAML activators. The relations log k = log k0 + α × pKa were established with log k0 = 13 ± 2 and 20 ± 4 and α = -1.1 ± 0.2 and -1.8 ± 0.4 for kI and kII, respectively. Thus, the reactivity of TAML activators across four generations of catalysts is predictable through their pKa values.
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Affiliation(s)
- Matthew R Mills
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew C Weitz
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - David Z Zhang
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Michael P Hendrich
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D Ryabov
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J Collins
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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24
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Alanthadka A, Devi ES, Nagarajan S, Sridharan V, Suvitha A, Maheswari CU. NHC-Catalyzed Benzylic Csp³-H Bond Activation of Alkylarenes andN-Benzylamines for the Synthesis of 3H-Quinazolin-4-ones: Experimental and Theoretical Study. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600792] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anitha Alanthadka
- Organic Synthesis Group; Department of Chemistry; School of Chemical and Biotechnology; SASTRA University; 613401 Thanjavur India
| | - E. Sankari Devi
- Organic Synthesis Group; Department of Chemistry; School of Chemical and Biotechnology; SASTRA University; 613401 Thanjavur India
| | - Subbiah Nagarajan
- Organic Synthesis Group; Department of Chemistry; School of Chemical and Biotechnology; SASTRA University; 613401 Thanjavur India
| | - Vellaisamy Sridharan
- Organic Synthesis Group; Department of Chemistry; School of Chemical and Biotechnology; SASTRA University; 613401 Thanjavur India
| | - Ambigapathy Suvitha
- Computational Molecular Biophysics Laboratory; Department of Chemistry; School of Chemical and Biotechnology; SASTRA University; 613401 Thanjavur India
| | - C. Uma Maheswari
- Organic Synthesis Group; Department of Chemistry; School of Chemical and Biotechnology; SASTRA University; 613401 Thanjavur India
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25
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Hossain MM, Shyu SG. Biphasic copper-catalyzed C–H bond activation of arylalkanes to ketones with tert-butyl hydroperoxide in water at room temperature. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.066] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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Zhang Z, Gao Y, Liu Y, Li J, Xie H, Li H, Wang W. Organocatalytic Aerobic Oxidation of Benzylic sp3 C–H Bonds of Ethers and Alkylarenes Promoted by a Recyclable TEMPO Catalyst. Org Lett 2015; 17:5492-5. [DOI: 10.1021/acs.orglett.5b02877] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhiguang Zhang
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Yuan Gao
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Yuan Liu
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Jianjun Li
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Hexin Xie
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Hao Li
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Wei Wang
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
- Department
of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
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27
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Mills MR, Burton AE, Mori DI, Ryabov AD, Collins TJ. Iron(IV) or iron(V)? Heterolytic or free radical? Oxidation pathways of a TAML activator in acetonitrile at −40 °C. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1073270] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Matthew R. Mills
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Abigail E. Burton
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Dylan I. Mori
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
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