1
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Choukairi Afailal N, Borrell M, Cianfanelli M, Costas M. Dearomative syn-Dihydroxylation of Naphthalenes with a Biomimetic Iron Catalyst. J Am Chem Soc 2024; 146:240-249. [PMID: 38123164 PMCID: PMC10785824 DOI: 10.1021/jacs.3c08565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/15/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
Arenes are interesting feedstocks for organic synthesis because of their natural abundance. However, the stability conferred by aromaticity severely limits their reactivity, mostly to reactions where aromaticity is retained. Methods for oxidative dearomatization of unactivated arenes are exceedingly rare but particularly valuable because the introduction of Csp3-O bonds transforms the flat aromatic ring in 3D skeletons and confers the oxygenated molecules with a very rich chemistry suitable for diversification. Mimicking the activity of naphthalene dioxygenase (NDO), a non-heme iron-dependent bacterial enzyme, herein we describe the catalytic syn-dihydroxylation of naphthalenes with hydrogen peroxide, employing a sterically encumbered and exceedingly reactive yet chemoselective iron catalyst. The high electrophilicity of hypervalent iron oxo species is devised as a key to enabling overcoming the aromatically promoted kinetic stability. Interestingly, the first dihydroxylation of the arene renders a reactive olefinic site ready for further dihydroxylation. Sequential bis-dihydroxylation of a broad range of naphthalenes provides valuable tetrahydroxylated products in preparative yields, amenable for rapid diversification.
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Affiliation(s)
- Najoua Choukairi Afailal
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
| | - Margarida Borrell
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
| | - Marco Cianfanelli
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
| | - Miquel Costas
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
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2
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Chen J, Zhang J, Sun Y, Xu Y, Yang Y, Lee YM, Ji W, Wang B, Nam W, Wang B. Mononuclear Non-Heme Manganese-Catalyzed Enantioselective cis-Dihydroxylation of Alkenes Modeling Rieske Dioxygenases. J Am Chem Soc 2023; 145:27626-27638. [PMID: 38064642 DOI: 10.1021/jacs.3c09508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The practical catalytic enantioselective cis-dihydroxylation of olefins that utilize earth-abundant first-row transition metal catalysts under environmentally friendly conditions is an important yet challenging task. Inspired by the cis-dihydroxylation reactions catalyzed by Rieske dioxygenases and non-heme iron models, we report the biologically inspired cis-dihydroxylation catalysis that employs an inexpensive and readily available mononuclear non-heme manganese complex bearing a tetradentate nitrogen-donor ligand and aqueous hydrogen peroxide (H2O2) and potassium peroxymonosulfate (KHSO5) as terminal oxidants. A wide range of olefins are efficiently oxidized to enantioenriched cis-diols in practically useful yields with excellent cis-dihydroxylation selectivity and enantioselectivity (up to 99% ee). Mechanistic studies, such as isotopically 18O-labeled water experiments, and density functional theory (DFT) calculations support that a manganese(V)-oxo-hydroxo (HO-MnV═O) species, which is formed via the water-assisted heterolytic O-O bond cleavage of putative manganese(III)-hydroperoxide and manganese(III)-peroxysulfate precursors, is the active oxidant that effects the cis-dihydroxylation of olefins; this is reminiscent of the frequently postulated iron(V)-oxo-hydroxo (HO-FeV═O) species in the catalytic arene and alkene cis-dihydroxylation reactions by Rieske dioxygenases and synthetic non-heme iron models. Further, DFT calculations for the mechanism of the HO-MnV═O-mediated enantioselective cis-dihydroxylation of olefins reveal that the first oxo attack step controls the enantioselectivity, which exhibits a high preference for cis-dihydroxylation over epoxidation. In this study, we are able to replicate both the catalytic function and the key chemical principles of Rieske dioxygenases in mononuclear non-heme manganese-catalyzed enantioselective cis-dihydroxylation of olefins.
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Affiliation(s)
- Jie Chen
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Jinyan Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ying Sun
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Yuankai Xu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Yinan Yang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Wenhua Ji
- Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
| | - Binju Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Bin Wang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
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3
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Zhu W, Kumar A, Xiong J, Abernathy MJ, Li XX, Seo MS, Lee YM, Sarangi R, Guo Y, Nam W. Seeing the cis-Dihydroxylating Intermediate: A Mononuclear Nonheme Iron-Peroxo Complex in cis-Dihydroxylation Reactions Modeling Rieske Dioxygenases. J Am Chem Soc 2023; 145:4389-4393. [PMID: 36795537 PMCID: PMC10544271 DOI: 10.1021/jacs.2c13551] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The nature of reactive intermediates and the mechanism of the cis-dihydroxylation of arenes and olefins by Rieske dioxygenases and synthetic nonheme iron catalysts have been the topic of intense research over the past several decades. In this study, we report that a spectroscopically well characterized mononuclear nonheme iron(III)-peroxo complex reacts with olefins and naphthalene derivatives, yielding iron(III) cycloadducts that are isolated and characterized structurally and spectroscopically. Kinetics and product analysis reveal that the nonheme iron(III)-peroxo complex is a nucleophile that reacts with olefins and naphthalenes to yield cis-diol products. The present study reports the first example of the cis-dihydroxylation of substrates by a nonheme iron(III)-peroxo complex that yields cis-diol products.
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Affiliation(s)
- Wenjuan Zhu
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Akhilesh Kumar
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Jin Xiong
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Macon J Abernathy
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford, California 94025, United States
| | - Xiao-Xi Li
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
| | - Mi Sook Seo
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Ritimukta Sarangi
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford, California 94025, United States
| | - Yisong Guo
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
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4
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Biologically inspired nonheme iron complex-catalyzed cis-dihydroxylation of alkenes modeling Rieske dioxygenases. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Biswas JP, Ansari M, Paik A, Sasmal S, Paul S, Rana S, Rajaraman G, Maiti D. Effect of the Ligand Backbone on the Reactivity and Mechanistic Paradigm of Non‐Heme Iron(IV)‐Oxo during Olefin Epoxidation. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jyoti Prasad Biswas
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Mursaleem Ansari
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Aniruddha Paik
- Department of Chemistry University of North Bengal Raja Rammohunpur Darjeeling West Bengal, Pin 734013 India
| | - Sheuli Sasmal
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Sabarni Paul
- Department of Chemistry University of North Bengal Raja Rammohunpur Darjeeling West Bengal, Pin 734013 India
| | - Sujoy Rana
- Department of Chemistry University of North Bengal Raja Rammohunpur Darjeeling West Bengal, Pin 734013 India
| | - Gopalan Rajaraman
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
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6
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Biswas JP, Ansari M, Paik A, Sasmal S, Paul S, Rana S, Rajaraman G, Maiti D. Effect of the Ligand Backbone on the Reactivity and Mechanistic Paradigm of Non-Heme Iron(IV)-Oxo during Olefin Epoxidation. Angew Chem Int Ed Engl 2021; 60:14030-14039. [PMID: 33836110 DOI: 10.1002/anie.202102484] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Indexed: 01/08/2023]
Abstract
The oxygen atom transfer (OAT) reactivity of the non-heme [FeIV (2PyN2Q)(O)]2+ (2) containing the sterically bulky quinoline-pyridine pentadentate ligand (2PyN2Q) has been thoroughly studied with different olefins. The ferryl-oxo complex 2 shows excellent OAT reactivity during epoxidations. The steric encumbrance and electronic effect of the ligand influence the mechanistic shuttle between OAT pathway I and isomerization pathway II (during the reaction stereo pure olefins), resulting in a mixture of cis-trans epoxide products. In contrast, the sterically less hindered and electronically different [FeIV (N4Py)(O)]2+ (1) provides only cis-stilbene epoxide. A Hammett study suggests the role of dominant inductive electronic along with minor resonance effect during electron transfer from olefin to 2 in the rate-limiting step. Additionally, a computational study supports the involvement of stepwise pathways during olefin epoxidation. The ferryl bend due to the bulkier ligand incorporation leads to destabilization of both d z 2 and d x 2 - y 2 orbitals, leading to a very small quintet-triplet gap and enhanced reactivity for 2 compared to 1. Thus, the present study unveils the role of steric and electronic effects of the ligand towards mechanistic modification during olefin epoxidation.
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Affiliation(s)
- Jyoti Prasad Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Mursaleem Ansari
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Aniruddha Paik
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling, West Bengal, Pin, 734013, India
| | - Sheuli Sasmal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Sabarni Paul
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling, West Bengal, Pin, 734013, India
| | - Sujoy Rana
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling, West Bengal, Pin, 734013, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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7
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Achard T, Bellemin‐Laponnaz S. Recent Advances on Catalytic Osmium‐Free Olefin
syn
‐Dihydroxylation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Thierry Achard
- Département des Matériaux Organiques Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) Université de Strasbourg CNRS UMR‐7504 23 rue du Loess, BP 43 67034 Strasbourg Cedex 2 France
| | - Stéphane Bellemin‐Laponnaz
- Département des Matériaux Organiques Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) Université de Strasbourg CNRS UMR‐7504 23 rue du Loess, BP 43 67034 Strasbourg Cedex 2 France
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8
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Wei J, Wu L, Wang HX, Zhang X, Tse CW, Zhou CY, Huang JS, Che CM. Iron-Catalyzed Highly Enantioselective cis-Dihydroxylation of Trisubstituted Alkenes with Aqueous H 2 O 2. Angew Chem Int Ed Engl 2020; 59:16561-16571. [PMID: 32500643 DOI: 10.1002/anie.202002866] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Indexed: 01/02/2023]
Abstract
Reliable methods for enantioselective cis-dihydroxylation of trisubstituted alkenes are scarce. The iron(II) complex cis-α-[FeII (2-Me2 -BQPN)(OTf)2 ], which bears a tetradentate N4 ligand (Me2 -BQPN=(R,R)-N,N'-dimethyl-N,N'-bis(2-methylquinolin-8-yl)-1,2-diphenylethane-1,2-diamine), was prepared and characterized. With this complex as the catalyst, a broad range of trisubstituted electron-deficient alkenes were efficiently oxidized to chiral cis-diols in yields of up to 98 % and up to 99.9 % ee when using hydrogen peroxide (H2 O2 ) as oxidant under mild conditions. Experimental studies (including 18 O-labeling, ESI-MS, NMR, EPR, and UV/Vis analyses) and DFT calculations were performed to gain mechanistic insight, which suggested possible involvement of a chiral cis-FeV (O)2 reaction intermediate as an active oxidant. This cis-[FeII (chiral N4 ligand)]2+ /H2 O2 method could be a viable green alternative/complement to the existing OsO4 -based methods for asymmetric alkene dihydroxylation reactions.
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Affiliation(s)
- Jinhu Wei
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Liangliang Wu
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Hai-Xu Wang
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Xiting Zhang
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Chun-Wai Tse
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Cong-Ying Zhou
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Jie-Sheng Huang
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.,HKU Shenzhen Institute of Research & Innovation, Shenzhen, China
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9
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Wei J, Wu L, Wang H, Zhang X, Tse C, Zhou C, Huang J, Che C. Iron‐Catalyzed Highly Enantioselective
cis
‐Dihydroxylation of Trisubstituted Alkenes with Aqueous H
2
O
2. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jinhu Wei
- State Key Laboratory of Synthetic Chemistry and Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong China
| | - Liangliang Wu
- State Key Laboratory of Synthetic Chemistry and Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong China
| | - Hai‐Xu Wang
- State Key Laboratory of Synthetic Chemistry and Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong China
| | - Xiting Zhang
- State Key Laboratory of Synthetic Chemistry and Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong China
| | - Chun‐Wai Tse
- State Key Laboratory of Synthetic Chemistry and Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong China
| | - Cong‐Ying Zhou
- State Key Laboratory of Synthetic Chemistry and Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong China
| | - Jie‐Sheng Huang
- State Key Laboratory of Synthetic Chemistry and Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong China
| | - Chi‐Ming Che
- State Key Laboratory of Synthetic Chemistry and Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong China
- HKU Shenzhen Institute of Research & Innovation Shenzhen China
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10
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Parise A, Muraca MC, Russo N, Toscano M, Marino T. The Generation of the Oxidant Agent of a Mononuclear Nonheme Fe(II) Biomimetic Complex by Oxidative Decarboxylation. A DFT Investigation. Molecules 2020; 25:molecules25020328. [PMID: 31947511 PMCID: PMC7024176 DOI: 10.3390/molecules25020328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 11/16/2022] Open
Abstract
The oxidative decarboxylation of the iron(II) α-hydroxy acid (mandelic acid) complex model, biomimetic of Rieske dioxygenase, has been investigated at the density functional level. The explored mechanism sheds light on the role of the α-hydroxyl group on the dioxygen activation. The potential energy surfaces have been explored in different electronic spin states. The rate-determining step of the process is the proton transfer. The oxidative decarboxylation preferentially takes place on the quintet state.
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Affiliation(s)
| | | | - Nino Russo
- Correspondence: (N.R.); (T.M.); Tel.: +39-0984-492106 (N.R.); +39-0984-492085 (T.M.)
| | | | - Tiziana Marino
- Correspondence: (N.R.); (T.M.); Tel.: +39-0984-492106 (N.R.); +39-0984-492085 (T.M.)
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11
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Chatterjee S, Bhattacharya S, Paine TK. Bioinspired Olefin cis-Dihydroxylation and Aliphatic C–H Bond Hydroxylation with Dioxygen Catalyzed by a Nonheme Iron Complex. Inorg Chem 2018; 57:10160-10169. [DOI: 10.1021/acs.inorgchem.8b01353] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Sayanti Chatterjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Shrabanti Bhattacharya
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Tapan Kanti Paine
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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12
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Bag R, Punniyamurthy T. K2S2O8-Mediated Dioxygenation of Aryl Alkenes UsingN-Hydroxylamines and Air. ChemistrySelect 2018. [DOI: 10.1002/slct.201801154] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Raghunath Bag
- Department of Chemistry; Indian Institution of Technology Guwahati; Guwahati - 781039 India
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13
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Lu HF, Chen HF, Kao CL, Chao I, Chen HY. A computational study of the Fenton reaction in different pH ranges. Phys Chem Chem Phys 2018; 20:22890-22901. [DOI: 10.1039/c8cp04381g] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The mechanism of the Fenton reaction is pH dependent and four distinct reactive species have been identified and found to display quite different oxidation reactivities.
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Affiliation(s)
- Hsiu-Feng Lu
- Institute of Chemistry
- Academia Sinica
- Taipei 11529
- Taiwan
| | - Hui-Fen Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Chai-Lin Kao
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Ito Chao
- Institute of Chemistry
- Academia Sinica
- Taipei 11529
- Taiwan
| | - Hsing-Yin Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
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14
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Tretbar M, Stark CBW. Large-Scale Synthesis of Symmetric Tetramine Ligands by Using a Modular Double Reductive Amination Approach. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Maik Tretbar
- Fachbereich Chemie; Institut für Organische Chemie; Universität Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| | - Christian B. W. Stark
- Fachbereich Chemie; Institut für Organische Chemie; Universität Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
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15
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Borrell M, Costas M. Mechanistically Driven Development of an Iron Catalyst for Selective Syn-Dihydroxylation of Alkenes with Aqueous Hydrogen Peroxide. J Am Chem Soc 2017; 139:12821-12829. [DOI: 10.1021/jacs.7b07909] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Margarida Borrell
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
| | - Miquel Costas
- Institut de Química
Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
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16
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Srinivas BTV, Supriya P, Rohithrao V, Naidu NVS, Sreedhar B. Magnetic CuFe
2
O
4
and Fe
3
O
4
Nanoparticles Catalyzed Diacetoxylation of Alkenes and 1,2‐Oxyacetoxylation of Terminal Alkynes Using PhI(OAc)
2
as Oxidant. ChemistrySelect 2017. [DOI: 10.1002/slct.201700205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- B. T. V. Srinivas
- Inorganic & Physical Chemistry DivisionIndian Institute of Chemical Technology (Council of Scientific & Industrial Research) Hyderabad - 500007 India
| | - P. Supriya
- Department of ChemistrySri Venkateshwara University Tirupati, Andhra Pradesh India
| | - V. Rohithrao
- Inorganic & Physical Chemistry DivisionIndian Institute of Chemical Technology (Council of Scientific & Industrial Research) Hyderabad - 500007 India
| | - N. V. S. Naidu
- Department of ChemistrySri Venkateshwara University Tirupati, Andhra Pradesh India
| | - B. Sreedhar
- Inorganic & Physical Chemistry DivisionIndian Institute of Chemical Technology (Council of Scientific & Industrial Research) Hyderabad - 500007 India
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17
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Oxidation of alkane and alkene moieties with biologically inspired nonheme iron catalysts and hydrogen peroxide: from free radicals to stereoselective transformations. J Biol Inorg Chem 2017; 22:425-452. [DOI: 10.1007/s00775-016-1434-z] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/27/2016] [Indexed: 11/26/2022]
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18
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Olivo G, Cussó O, Costas M. Biologically Inspired C−H and C=C Oxidations with Hydrogen Peroxide Catalyzed by Iron Coordination Complexes. Chem Asian J 2016; 11:3148-3158. [DOI: 10.1002/asia.201601170] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 09/26/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Giorgio Olivo
- Departament de Química I Institut de Química Computacional i Catàlisi (IQCC); Universitat de Girona; Facultat de Ciències, Campus de Montilivi; Girona 17071 Spain
| | - Olaf Cussó
- Departament de Química I Institut de Química Computacional i Catàlisi (IQCC); Universitat de Girona; Facultat de Ciències, Campus de Montilivi; Girona 17071 Spain
| | - Miquel Costas
- Departament de Química I Institut de Química Computacional i Catàlisi (IQCC); Universitat de Girona; Facultat de Ciències, Campus de Montilivi; Girona 17071 Spain
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19
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Zang C, Liu Y, Xu ZJ, Tse CW, Guan X, Wei J, Huang JS, Che CM. Highly Enantioselective Iron-Catalyzed cis
-Dihydroxylation of Alkenes with Hydrogen Peroxide Oxidant via an FeIII
-OOH Reactive Intermediate. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603410] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chao Zang
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis; Shanghai Institute of Organic Chemistry; 354 Feng Lin Road Shanghai China
| | - Yungen Liu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong China
| | - Zhen-Jiang Xu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis; Shanghai Institute of Organic Chemistry; 354 Feng Lin Road Shanghai China
| | - Chun-Wai Tse
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong China
| | - Xiangguo Guan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong China
| | - Jinhu Wei
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong China
| | - Jie-Sheng Huang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong China
| | - Chi-Ming Che
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis; Shanghai Institute of Organic Chemistry; 354 Feng Lin Road Shanghai China
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong China
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20
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Zang C, Liu Y, Xu ZJ, Tse CW, Guan X, Wei J, Huang JS, Che CM. Highly Enantioselective Iron-Catalyzed cis-Dihydroxylation of Alkenes with Hydrogen Peroxide Oxidant via an Fe(III) -OOH Reactive Intermediate. Angew Chem Int Ed Engl 2016; 55:10253-7. [PMID: 27457506 DOI: 10.1002/anie.201603410] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/07/2016] [Indexed: 02/07/2023]
Abstract
The development of environmentally benign catalysts for highly enantioselective asymmetric cis-dihydroxylation (AD) of alkenes with broad substrate scope remains a challenge. By employing [Fe(II) (L)(OTf)2 ] (L=N,N'-dimethyl-N,N'-bis(2-methyl-8-quinolyl)-cyclohexane-1,2-diamine) as a catalyst, cis-diols in up to 99.8 % ee with 85 % isolated yield have been achieved in AD of alkenes with H2 O2 as an oxidant and alkenes in a limiting amount. This "[Fe(II) (L)(OTf)2 ]+H2 O2 " method is applicable to both (E)-alkenes and terminal alkenes (24 examples >80 % ee, up to 1 g scale). Mechanistic studies, including (18) O-labeling, UV/Vis, EPR, ESI-MS analyses, and DFT calculations lend evidence for the involvement of chiral Fe(III) -OOH active species in enantioselective formation of the two C-O bonds.
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Affiliation(s)
- Chao Zang
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, 354 Feng Lin Road, Shanghai, China
| | - Yungen Liu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Zhen-Jiang Xu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, 354 Feng Lin Road, Shanghai, China
| | - Chun-Wai Tse
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Xiangguo Guan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Jinhu Wei
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Jie-Sheng Huang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Chi-Ming Che
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, 354 Feng Lin Road, Shanghai, China. .,Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
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21
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Kang YB, Chen XM, Yao CZ, Ning XS. Direct oxidative lactonization of alkenoic acids mediated solely by NaIO4: beyond a simple oxidant. Chem Commun (Camb) 2016; 52:6193-6. [PMID: 27078217 DOI: 10.1039/c6cc02246d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Triflic acid-catalyzed direct oxidative lactonization of alkenoic acids mediated solely by NaIO4 without halogen salts is described. Sodium periodate works not only as an oxidant, but also as an active reagent and directly mediates the lactonization. A new cheap, green, and practical oxidative lactonization approach has been developed using NaIO4 as the sole reagent.
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Affiliation(s)
- Yan-Biao Kang
- Center of Advanced Nanocatalysis, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
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22
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Kejriwal A, Biswas S, Biswas AN, Bandyopadhyay P. cis-Dihydroxylation of electron deficient olefins catalysed by an oxo-bridged diiron(III) complex with H2O2. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2015.11.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Folkertsma E, de Waard EF, Korpershoek G, van Schaik AJ, Solozabal Mirón N, Borrmann M, Nijsse S, Moelands MAH, Lutz M, Otte M, Moret M, Klein Gebbink RJM. Mimicry of the 2‐His‐1‐Carboxylate Facial Triad Using Bulky N,N,O‐Ligands: Non‐Heme Iron Complexes Featuring a Single Facial Ligand and Easily Exchangeable Co‐Ligands. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501406] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Emma Folkertsma
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Esther F. de Waard
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Gerda Korpershoek
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Arnoldus J. van Schaik
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Naiara Solozabal Mirón
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Mandy Borrmann
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Sjoerd Nijsse
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Marcel A. H. Moelands
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Matthias Otte
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Marc‐Etienne Moret
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
| | - Robertus J. M. Klein Gebbink
- Organic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands, http://www.uu.nl/en/research/organic‐chemistry‐catalysis
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24
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Leurs M, Spiekermann PS, Tiller JC. Optimization of and Mechanistic Considerations for the Enantioselective Dihydroxylation of Styrene Catalyzed by Osmate-Laccase-Poly(2-Methyloxazoline) in Organic Solvents. ChemCatChem 2015. [DOI: 10.1002/cctc.201501083] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Melanie Leurs
- Chair of Biomaterials and Polymer Science; Department of Biochemical and Chemical Engineering; TU Dortmund; Emil-Figge-Strasse 66 44227 Dortmund Germany), Fax: (+49) 231-755-2480
| | - Pia S. Spiekermann
- Chair of Biomaterials and Polymer Science; Department of Biochemical and Chemical Engineering; TU Dortmund; Emil-Figge-Strasse 66 44227 Dortmund Germany), Fax: (+49) 231-755-2480
| | - Joerg C. Tiller
- Chair of Biomaterials and Polymer Science; Department of Biochemical and Chemical Engineering; TU Dortmund; Emil-Figge-Strasse 66 44227 Dortmund Germany), Fax: (+49) 231-755-2480
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25
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Olivo G, Nardi M, Vìdal D, Barbieri A, Lapi A, Gómez L, Lanzalunga O, Costas M, Di Stefano S. C-H Bond Oxidation Catalyzed by an Imine-Based Iron Complex: A Mechanistic Insight. Inorg Chem 2015; 54:10141-52. [PMID: 26457760 DOI: 10.1021/acs.inorgchem.5b01500] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A family of imine-based nonheme iron(II) complexes (LX)2Fe(OTf)2 has been prepared, characterized, and employed as C-H oxidation catalysts. Ligands LX (X = 1, 2, 3, and 4) stand for tridentate imine ligands resulting from spontaneous condensation of 2-pycolyl-amine and 4-substituted-2-picolyl aldehydes. Fast and quantitative formation of the complex occurs just upon mixing aldehyde, amine, and Fe(OTf)2 in a 2:2:1 ratio in acetonitrile solution. The solid-state structures of (L1)2Fe(OTf)(ClO4) and (L3)2Fe(OTf)2 are reported, showing a low-spin octahedral iron center, with the ligands arranged in a meridional fashion. (1)H NMR analyses indicate that the solid-state structure and spin state is retained in solution. These analyses also show the presence of an amine-imine tautomeric equilibrium. (LX)2Fe(OTf)2 efficiently catalyze the oxidation of alkyl C-H bonds employing H2O2 as a terminal oxidant. Manipulation of the electronic properties of the imine ligand has only a minor impact on efficiency and selectivity of the oxidative process. A mechanistic study is presented, providing evidence that C-H oxidations are metal-based. Reactions occur with stereoretention at the hydroxylated carbon and selectively at tertiary over secondary C-H bonds. Isotopic labeling analyses show that H2O2 is the dominant origin of the oxygen atoms inserted in the oxygenated product. Experimental evidence is provided that reactions involve initial oxidation of the complexes to the ferric state, and it is proposed that a ligand arm dissociates to enable hydrogen peroxide binding and activation. Selectivity patterns and isotopic labeling studies strongly suggest that activation of hydrogen peroxide occurs by heterolytic O-O cleavage, without the assistance of a cis-binding water or alkyl carboxylic acid. The sum of these observations provides sound evidence that controlled activation of H2O2 at (LX)2Fe(OTf)2 differs from that occurring in biomimetic iron catalysts described to date.
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Affiliation(s)
- Giorgio Olivo
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" and Istituto CNR di Metodologie Chimiche (IMC-CNR), Sezione Meccanismi di Reazione, c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy.,Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona , Campus de Montilivi, 17071 Girona, Spain
| | - Martina Nardi
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" and Istituto CNR di Metodologie Chimiche (IMC-CNR), Sezione Meccanismi di Reazione, c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy
| | - Diego Vìdal
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona , Campus de Montilivi, 17071 Girona, Spain
| | - Alessia Barbieri
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" and Istituto CNR di Metodologie Chimiche (IMC-CNR), Sezione Meccanismi di Reazione, c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy
| | - Andrea Lapi
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" and Istituto CNR di Metodologie Chimiche (IMC-CNR), Sezione Meccanismi di Reazione, c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy.,Consortium of Chemical Catalysis and Reactivity, CIRCC Interuniversity , Via Celso Ulpiani 27, 70126 Bari, Italy
| | - Laura Gómez
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona , Campus de Montilivi, 17071 Girona, Spain.,Serveis Tècnics de Recerca (STR), Universitat de Girona , Parc Cientı́fic i Tecnològic, E-17003 Girona, Spain
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" and Istituto CNR di Metodologie Chimiche (IMC-CNR), Sezione Meccanismi di Reazione, c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy.,Consortium of Chemical Catalysis and Reactivity, CIRCC Interuniversity , Via Celso Ulpiani 27, 70126 Bari, Italy
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona , Campus de Montilivi, 17071 Girona, Spain
| | - Stefano Di Stefano
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" and Istituto CNR di Metodologie Chimiche (IMC-CNR), Sezione Meccanismi di Reazione, c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy.,Consortium of Chemical Catalysis and Reactivity, CIRCC Interuniversity , Via Celso Ulpiani 27, 70126 Bari, Italy
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26
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Chatterjee S, Paine TK. Olefincis-Dihydroxylation and Aliphatic CH Bond Oxygenation by a Dioxygen-Derived Electrophilic Iron-Oxygen Oxidant. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502229] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Chatterjee S, Paine TK. Olefin cis-Dihydroxylation and Aliphatic C-H Bond Oxygenation by a Dioxygen-Derived Electrophilic Iron-Oxygen Oxidant. Angew Chem Int Ed Engl 2015; 54:9338-42. [PMID: 26088714 DOI: 10.1002/anie.201502229] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/16/2015] [Indexed: 12/22/2022]
Abstract
Many iron-containing enzymes involve metal-oxygen oxidants to carry out O2-dependent transformation reactions. However, the selective oxidation of C-H and C=C bonds by biomimetic complexes using O2 remains a major challenge in bioinspired catalysis. The reactivity of iron-oxygen oxidants generated from an Fe(II)-benzilate complex of a facial N3 ligand were thus investigated. The complex reacted with O2 to form a nucleophilic oxidant, whereas an electrophilic oxidant, intercepted by external substrates, was generated in the presence of a Lewis acid. Based on the mechanistic studies, a nucleophilic Fe(II)-hydroperoxo species is proposed to form from the benzilate complex, which undergoes heterolytic O-O bond cleavage in the presence of a Lewis acid to generate an Fe(IV)-oxo-hydroxo oxidant. The electrophilic iron-oxygen oxidant selectively oxidizes sulfides to sulfoxides, alkenes to cis-diols, and it hydroxylates the C-H bonds of alkanes, including that of cyclohexane.
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Affiliation(s)
- Sayanti Chatterjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata-700032 (India)
| | - Tapan Kanti Paine
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata-700032 (India).
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28
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29
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Marchi-Delapierre C, Rondot L, Cavazza C, Ménage S. Oxidation Catalysis by Rationally Designed Artificial Metalloenzymes. Isr J Chem 2014. [DOI: 10.1002/ijch.201400110] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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30
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Reddi RN, Prasad PK, Sudalai A. I2-Catalyzed Regioselective Oxo- and Hydroxy-acyloxylation of Alkenes and Enol Ethers: A Facile Access to α-Acyloxyketones, Esters, and Diol Derivatives. Org Lett 2014; 16:5674-7. [DOI: 10.1021/ol5027393] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Rambabu N. Reddi
- Chemical
Engineering and
Process Development Division, National Chemical Laboratory, Pashan Road, Pune, 411008, India
| | - Pragati K. Prasad
- Chemical
Engineering and
Process Development Division, National Chemical Laboratory, Pashan Road, Pune, 411008, India
| | - Arumugam Sudalai
- Chemical
Engineering and
Process Development Division, National Chemical Laboratory, Pashan Road, Pune, 411008, India
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31
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Iyer SR, Javadi MM, Feng Y, Hyun MY, Oloo WN, Kim C, Que L. A chameleon catalyst for nonheme iron-promoted olefin oxidation. Chem Commun (Camb) 2014; 50:13777-80. [DOI: 10.1039/c4cc06164k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Bryliakov KP, Talsi EP. Active sites and mechanisms of bioinspired oxidation with H2O2, catalyzed by non-heme Fe and related Mn complexes. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.06.009] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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33
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Codola Z, Lloret-Fillol J, Costas M. Aminopyridine Iron and Manganese Complexes as Molecular Catalysts for Challenging Oxidative Transformations. PROGRESS IN INORGANIC CHEMISTRY: VOLUME 59 2014. [DOI: 10.1002/9781118869994.ch07] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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34
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Zhao Y, Xing X, Zhang S, Wang DZ. N,N-Dimethylaminobenzoates enable highly enantioselective Sharpless dihydroxylations of 1,1-disubstituted alkenes. Org Biomol Chem 2014; 12:4314-7. [PMID: 24847852 DOI: 10.1039/c4ob00621f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A design scenario aimed at exploring beneficial catalyst-substrate π-π stacking electronic interactions in the classical Sharpless asymmetric dihydroxylations (SAD) leads to the identification of highly polarizable allylic N,N-dimethylaminobenzoate as a remarkably efficient auxiliary for inducing high levels of enantioselectivities (up to 99% ee) in the traditionally challenging substrate class of 1,1-disubstituted aliphatic alkenes.
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Affiliation(s)
- Yaohong Zhao
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen University Town, Shenzhen, China 518055.
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35
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Pabis A, Geronimo I, Paneth P. A DFT study of the cis-dihydroxylation of nitroaromatic compounds catalyzed by nitrobenzene dioxygenase. J Phys Chem B 2014; 118:3245-56. [PMID: 24624972 PMCID: PMC3970850 DOI: 10.1021/jp4076299] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
![]()
The
mechanism of cis-dihydroxylation of nitrobenzene
and 2-nitrotoluene catalyzed by nitrobenzene 1,2-dioxygenase (NBDO),
a member of the naphthalene family of Rieske non-heme iron dioxygenases,
was studied by means of the density functional theory method using
four models of the enzyme active site. Different possible reaction
pathways for the substrate dioxygenation initiated either by the FeIII–OOH or HO–FeV=O attack
on the aromatic ring were considered and the computed activation barriers
compared with the Gibbs free energy of activation for the oxygen–oxygen
cleavage leading to the formation of the iron(V)–oxo species
from its ferric hydroperoxo precursor. The mechanism of the substrate cis-dihydroxylation leading to the formation of a cis-dihydrodiol was then investigated, and the most feasible
mechanism was found to be starting with the attack of the high-valent
iron–oxo species on the substrate ring yielding a radical intermediate,
which further evolves toward the final product.
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Affiliation(s)
- Anna Pabis
- Institute of Applied Radiation Chemistry, Lodz University of Technology , Zeromskiego 116, 90-924 Lodz, Poland
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36
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Paria S, Chatterjee S, Paine TK. Reactivity of an Iron–Oxygen Oxidant Generated upon Oxidative Decarboxylation of Biomimetic Iron(II) α-Hydroxy Acid Complexes. Inorg Chem 2014; 53:2810-21. [DOI: 10.1021/ic402443r] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sayantan Paria
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sayanti Chatterjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Tapan Kanti Paine
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science (IACS), 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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37
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Ariga K, Ji Q, Mori T, Naito M, Yamauchi Y, Abe H, Hill JP. Enzyme nanoarchitectonics: organization and device application. Chem Soc Rev 2014; 42:6322-45. [PMID: 23348617 DOI: 10.1039/c2cs35475f] [Citation(s) in RCA: 270] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Fabrication of ultrasmall functional machines and their integration within ultrasmall areas or volumes can be useful for creation of novel technologies. The ultimate goal of the development of ultrasmall machines and device systems is to construct functional structures where independent molecules operate as independent device components. To realize exotic functions, use of enzymes in device structures is an attractive solution because enzymes can be regarded as efficient machines possessing high reaction efficiencies and specificities and can operate even under ambient conditions. In this review, recent developments in enzyme immobilization for advanced functions including device applications are summarized from the viewpoint of micro/nano-level structural control, or nanoarchitectonics. Examples are roughly classified as organic soft matter, inorganic soft materials or integrated/organized media. Soft matter such as polymers and their hybrids provide a medium appropriate for entrapment and encapsulation of enzymes. In addition, self-immobilization based on self-assembly and array formation results in enzyme nanoarchitectures with soft functions. For the confinement of enzymes in nanospaces, hard inorganic mesoporous materials containing well-defined channels play an important role. Enzymes that are confined exhibit improved stability and controllable arrangement, which are useful for formation of functional relays and for their integration into artificial devices. Layer-by-layer assemblies as well as organized lipid assemblies such as Langmuir-Blodgett films are some of the best media for architecting controllable enzyme arrangements. The ultrathin forms of these films facilitate their connection with external devices such as electrodes and transistors. Artificial enzymes and enzyme-mimicking catalysts are finally briefly described as examples of enzyme functions involving non-biological materials. These systems may compensate for the drawbacks of natural enzymes, such as their instabilities under harsh conditions. We believe that enzymes and their mimics will be freely coupled, organized and integrated upon demand in near future technologies.
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Affiliation(s)
- Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan.
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38
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Midya GC, Parasar B, Dhara K, Dash J. Ligand mediated iron catalyzed dimerization of terminal aryl alkynes: scope and limitations. Org Biomol Chem 2014; 12:1812-22. [DOI: 10.1039/c3ob42365d] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Prat I, Company A, Corona T, Parella T, Ribas X, Costas M. Assessing the Impact of Electronic and Steric Tuning of the Ligand in the Spin State and Catalytic Oxidation Ability of the FeII(Pytacn) Family of Complexes. Inorg Chem 2013; 52:9229-44. [DOI: 10.1021/ic4004033] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Irene Prat
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
| | - Anna Company
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
| | - Teresa Corona
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
| | - Teodor Parella
- Servei
de Ressonància
Magnètica Nuclear, Universitat Autònoma de Barcelona, Bellaterra, E08193 Barcelona, Catalonia,
Spain
| | - Xavi Ribas
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
| | - Miquel Costas
- Grup de Química Bioinorgànica
i Supramolecular (QBIS), Institut de Química Computacional
i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, E17071 Girona,
Catalonia, Spain
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Moelands MAH, Nijsse S, Folkertsma E, de Bruin B, Lutz M, Spek AL, Klein Gebbink RJM. Bioinspired Nonheme Iron Complexes Derived from an Extended Series of N,N,O-Ligated BAIP Ligands. Inorg Chem 2013; 52:7394-410. [DOI: 10.1021/ic400096e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marcel A. H. Moelands
- Organic Chemistry and Catalysis,
Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht,
The Netherlands
| | - Sjoerd Nijsse
- Organic Chemistry and Catalysis,
Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht,
The Netherlands
| | - Emma Folkertsma
- Organic Chemistry and Catalysis,
Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht,
The Netherlands
| | - Bas de Bruin
- Van’t
Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720, 1090 GE Amsterdam, The Netherlands
| | - Martin Lutz
- Van’t
Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720, 1090 GE Amsterdam, The Netherlands
- Bijvoet Center for Biomolecular
Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The
Netherlands
| | - Anthony L. Spek
- Van’t
Hoff Institute
for Molecular Sciences (HIMS), University of Amsterdam, P.O. Box 94720, 1090 GE Amsterdam, The Netherlands
- Bijvoet Center for Biomolecular
Research, Crystal and Structural Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The
Netherlands
| | - Robertus J. M. Klein Gebbink
- Organic Chemistry and Catalysis,
Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht,
The Netherlands
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41
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Bekkaye M, Su Y, Masson G. Metal-Free Dioxygenation of Enecarbamates Mediated by a Hypervalent Iodine Reagent. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300501] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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42
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Sugimoto H, Ashikari K, Itoh S. Osmium(III) and osmium(V) complexes bearing a macrocyclic ligand: a simple and efficient catalytic system for cis-dihydroxylation of alkenes with hydrogen peroxide. Chem Asian J 2013; 8:2154-60. [PMID: 23653395 DOI: 10.1002/asia.201300329] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Indexed: 11/12/2022]
Abstract
A simple protocol that uses [Os(III)(OH)(H2O)(L-N4Me2)](PF6)2 (1; L-N4Me2 = N,N'-dimethyl-2,11-diaza[3.3](2,6)pyridinophane) as a catalyst and H2O2 as a terminal oxidant for efficient cis-1,2-dihydroxylation of alkenes is presented. Unfunctionalized (or aliphatic) alkenes and alkenes/styrenes containing electron-withdrawing groups are selectively oxidized to the corresponding vicinal diols in good to excellent yields (46-99 %). In the catalytic reactions, the stoichiometry of alkene:H2O2 is 1:1, and thus the oxidant efficiency is very high. For the dihydroxylation of cyclohexene, the catalytic amount of 1 can be reduced to 0.01 mol % to achieve a very high turnover number of 5500. The active oxidant is identified as the Os(V)(O)(OH) species (2), which is formed via the hydroperoxide adduct, an Os(III)(OOH) species. The active oxidant 2 is successfully isolated and crystallographically characterized.
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Affiliation(s)
- Hideki Sugimoto
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
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43
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Oloo WN, Fielding AJ, Que L. Rate-determining water-assisted O-O bond cleavage of an Fe(III)-OOH intermediate in a bio-inspired nonheme iron-catalyzed oxidation. J Am Chem Soc 2013; 135:6438-41. [PMID: 23594282 DOI: 10.1021/ja402759c] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrocarbon oxidations by bio-inspired nonheme iron catalysts and H2O2 have been proposed to involve an Fe(III)-OOH intermediate that decays via a water-assisted mechanism to form an Fe(V)(O)(OH) oxidant. Herein we report kinetic evidence for this pathway in the oxidation of 1-octene catalyzed by [Fe(II)(TPA)(NCCH3)](2+) (1, TPA = tris(2-pyridylmethyl)amine). The (TPA)Fe(III)(OOH) intermediate 2 can be observed at -40 °C and is found to undergo first-order decay, which is accelerated by water. Interestingly, the decay rate of 2 is comparable to that of product formation, indicating that the decay of 2 results in olefin oxidation. Furthermore, the Eyring activation parameters for the decay of 2 and product formation are identical, and both processes are associated with an H2O/D2O KIE of 2.5. Taken together with previous (18)O-labeling data, these results point to a water-assisted heterolytic O-O bond cleavage of 2 as the rate-limiting step in olefin oxidation.
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Affiliation(s)
- Williamson N Oloo
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, Minnesota 55455, USA
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44
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45
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Prat I, Company A, Postils V, Ribas X, Que L, Luis JM, Costas M. The mechanism of stereospecific C-H oxidation by Fe(Pytacn) complexes: bioinspired non-heme iron catalysts containing cis-labile exchangeable sites. Chemistry 2013; 19:6724-38. [PMID: 23536410 DOI: 10.1002/chem.201300110] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Indexed: 11/08/2022]
Abstract
A detailed mechanistic study of the hydroxylation of alkane C-H bonds using H2O2 by a family of mononuclear non heme iron catalysts with the formula [Fe(II)(CF3SO3)2(L)] is described, in which L is a tetradentate ligand containing a triazacyclononane tripod and a pyridine ring bearing different substituents at the α and γ positions, which tune the electronic or steric properties of the corresponding iron complexes. Two inequivalent cis-labile exchangeable sites, occupied by triflate ions, complete the octahedral iron coordination sphere. The C-H hydroxylation mediated by this family of complexes takes place with retention of configuration. Oxygen atoms from water are incorporated into hydroxylated products and the extent of this incorporation depends in a systematic manner on the nature of the catalyst, and the substrate. Mechanistic probes and isotopic analyses, in combination with detailed density functional theory (DFT) calculations, provide strong evidence that C-H hydroxylation is performed by highly electrophilic [Fe(V)(O)(OH)L] species through a concerted asynchronous mechanism, involving homolytic breakage of the C-H bond, followed by rebound of the hydroxyl ligand. The [Fe(V)(O)(OH)L] species can exist in two tautomeric forms, differing in the position of oxo and hydroxide ligands. Isotopic-labeling analysis shows that the relative reactivities of the two tautomeric forms are sensitively affected by the α substituent of the pyridine, and this reactivity behavior is rationalized by computational methods.
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Affiliation(s)
- Irene Prat
- Institut de Química Computacional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, 17071 Girona, Spain
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46
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Prat I, Font D, Company A, Junge K, Ribas X, Beller M, Costas M. Fe(PyTACN)-Catalyzedcis-Dihydroxylation of Olefins with Hydrogen Peroxide. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200938] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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47
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Zeng G, Sakaki S. Unexpected electronic process of H2 activation by a new nickel borane complex: comparison with the usual homolytic and heterolytic activations. Inorg Chem 2013; 52:2844-53. [PMID: 23464622 DOI: 10.1021/ic301733r] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
H-H σ-bond activation promoted by Ni[MesB(o-Ph2PC6H4)2] (1(Mes)) was theoretically investigated with the density functional theory method. In 1(Mes), the nickel 3d, 4s, and 4p orbital populations are similar to those of the typical nickel(II) complex. First, one H2 molecule coordinates with the nickel center to form a dihydrogen complex, 2, which induces an increase in the nickel 3d and 4p orbital populations and thus a decrease in the nickel oxidation state. Then, the H-H σ-bond is cleaved under the unusual cooperation of the electron-rich nickel center and the electron-deficient borane ligand in a polarized manner, leading to an unprecedented trans-nickel(II) hydridoborohydrido complex, 3. In the transition state, charge transfer (CT) occuring from the H2 moiety to the 1(Mes) moiety (0.683 e) is much larger than the reverse CT (0.284 e). As a result, cleavage of the H-H σ-bond affords two positively charged hydrogen atoms. In this process, the boron atomic population and the nickel 4p orbital population increase, but the nickel 3d orbital population decreases. After cleavage of the H-H σ-bond, CT from the nickel 4p orbital to these positively charged hydrogen atoms occurs to afford 3, where the oxidation state of the nickel center increases to +2. These electronic processes are different from those of the usual homolytic and heterolytic H-H σ-bond activations. Regeneration of 1(Mes) and the role of the borane ligand in these reactions are also discussed in detail.
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Affiliation(s)
- Guixiang Zeng
- Fukui Institute for Fundamental Chemistry, Kyoto University, Takano-Nishihiraki-cho 34-4, Sakyo-ku, Kyoto 606-8103, Japan
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48
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Perandones BF, del Río Nieto E, Godard C, Castillón S, De Frutos P, Claver C. Fe-Catalyzed Olefin Epoxidation with Tridentate Non-Heme Ligands and Hydrogen Peroxide as the Oxidant. ChemCatChem 2013. [DOI: 10.1002/cctc.201200764] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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49
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Cheng S, Li J, Yu X, Chen C, Ji H, Ma W, Zhao J. Selective activation of secondary C–H bonds by an iron catalyst: insights into possibilities created by the use of a carboxyl-containing bipyridine ligand. NEW J CHEM 2013. [DOI: 10.1039/c3nj00656e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Oloo WN, Feng Y, Iyer S, Parmelee S, Xue G, Que L. Cyclohexene as a substrate probe for the nature of the high-valent iron-oxo oxidant in Fe(TPA)-catalyzed oxidations. NEW J CHEM 2013. [DOI: 10.1039/c3nj00524k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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