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Zars E, Gravogl L, Gau MR, Carroll PJ, Meyer K, Mindiola DJ. Isostructural bridging diferrous chalcogenide cores [Fe II(μ-E)Fe II] (E = O, S, Se, Te) with decreasing antiferromagnetic coupling down the chalcogenide series. Chem Sci 2023; 14:6770-6779. [PMID: 37350823 PMCID: PMC10283490 DOI: 10.1039/d3sc01094e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/24/2023] [Indexed: 06/24/2023] Open
Abstract
Iron compounds containing a bridging oxo or sulfido moiety are ubiquitous in biological systems, but substitution with the heavier chalcogenides selenium and tellurium, however, is much rarer, with only a few examples reported to date. Here we show that treatment of the ferrous starting material [(tBupyrpyrr2)Fe(OEt2)] (1-OEt2) (tBupyrpyrr2 = 3,5-tBu2-bis(pyrrolyl)pyridine) with phosphine chalcogenide reagents E = PR3 results in the neutral phosphine chalcogenide adduct series [(tBupyrpyrr2)Fe(EPR3)] (E = O, S, Se; R = Ph; E = Te; R = tBu) (1-E) without any electron transfer, whereas treatment of the anionic starting material [K]2[(tBupyrpyrr2)Fe2(μ-N2)] (2-N2) with the appropriate chalcogenide transfer source yields cleanly the isostructural ferrous bridging mono-chalcogenide ate complexes [K]2[(tBupyrpyrr2)Fe2(μ-E)] (2-E) (E = O, S, Se, and Te) having significant deviation in the Fe-E-Fe bridge from linear in the case of E = O to more acute for the heaviest chalcogenide. All bridging chalcogenide complexes were analyzed using a variety of spectroscopic techniques, including 1H NMR, UV-Vis electronic absorbtion, and 57Fe Mössbauer. The spin-state and degree of communication between the two ferrous ions were probed via SQUID magnetometry, where it was found that all iron centers were high-spin (S = 2) FeII, with magnetic exchange coupling between the FeII ions. Magnetic studies established that antiferromagnetic coupling between the ferrous ions decreases as the identity of the chalcogen is tuned from O to the heaviest congener Te.
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Affiliation(s)
- Ethan Zars
- Department of Chemistry, University of Pennsylvania 231 S 34th St Philadelphia PA 19104 USA
| | - Lisa Gravogl
- Department of Chemistry & Pharmacy, Friedrich-Alexander-Universität Erlangen - Nürnberg (FAU) Egerlandstr. 1 91058 Erlangen Bavaria Germany
| | - Michael R Gau
- Department of Chemistry, University of Pennsylvania 231 S 34th St Philadelphia PA 19104 USA
| | - Patrick J Carroll
- Department of Chemistry, University of Pennsylvania 231 S 34th St Philadelphia PA 19104 USA
| | - Karsten Meyer
- Department of Chemistry & Pharmacy, Friedrich-Alexander-Universität Erlangen - Nürnberg (FAU) Egerlandstr. 1 91058 Erlangen Bavaria Germany
| | - Daniel J Mindiola
- Department of Chemistry, University of Pennsylvania 231 S 34th St Philadelphia PA 19104 USA
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2
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McClements IF, Wiesler CR, Tanski JM. Crystallographic and spectroscopic characterization of two 1-phenyl-1 H-imidazoles: 4-(1 H-imidazol-1-yl)benzaldehyde and 1-(4-meth-oxy-phen-yl)-1 H-imidazole. Acta Crystallogr E Crystallogr Commun 2023; 79:678-681. [PMID: 37601580 PMCID: PMC10439435 DOI: 10.1107/s2056989023005480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 06/21/2023] [Indexed: 08/22/2023]
Abstract
The title compounds, C10H8N2O, (I), and C10H10N2O, (II), are two 1-phenyl-1H-imidazole derivatives, which differ in the substituent para to the imidazole group on the arene ring, i.e. a benzaldehyde, (I), and an anisole, (II). Both mol-ecules pack with different motifs via similar weak C-H⋯N/O inter-actions and differ with respect to the angles between the mean planes of the imidazole and arene rings [24.58 (7)° in (I) and 43.67 (4)° in (II)].
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Affiliation(s)
| | - Clara R. Wiesler
- Department of Chemistry, Vassar College, Poughkeepsie, NY 12604, USA
| | - Joseph M. Tanski
- Department of Chemistry, Vassar College, Poughkeepsie, NY 12604, USA
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3
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Beller M, Mao S, Budweg S, Spannenberg A, Wen X, Yang Y, Li YW, Junge K. Iron‐Catalyzed Epoxidation of Linear α‐Olefins with Hydrogen Peroxide. ChemCatChem 2021. [DOI: 10.1002/cctc.202101668] [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)
- Matthias Beller
- Leibniz-Institut für Katalyse Homogeneous Catalysis Albert-Einstein-Straße 29a 18059 Rostock GERMANY
| | - Shuxin Mao
- Leibniz-Institut für Katalyse eV: Leibniz-Institut fur Katalyse eV Angewandte Homogenkatalyse GERMANY
| | - Svenja Budweg
- Leibniz-Institut für Katalyse eV: Leibniz-Institut fur Katalyse eV Angewandte Homogenkatalyse GERMANY
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse eV: Leibniz-Institut fur Katalyse eV Analytik GERMANY
| | - Xiaodong Wen
- Chinese Academy of Sciences Institute of Coal Chemistry CHINA
| | - Yong Yang
- Chinese Academy of Sciences Katalyse CHINA
| | - Yong-Wang Li
- Chinese Academy of Sciences Institute of Coal Chemistry CHINA
| | - Kathrin Junge
- Leibniz-Institut für Katalyse eV: Leibniz-Institut fur Katalyse eV Angewandte Homogenkatalyse GERMANY
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4
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Taşdemir V. Synthesis of imidazo-1,4-oxazinone derivatives and investigation of reaction mechanism. Turk J Chem 2021; 45:1639-1649. [PMID: 34849073 PMCID: PMC8596553 DOI: 10.3906/kim-2106-28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/02/2021] [Indexed: 11/18/2022] Open
Abstract
In this study, nine different C-2 aroyl imidazole derivatives were synthesized in a one pot reaction with two steps, and the reduction reactions of these derivatives with NaBH4 were carried out under mild conditions. Substitution reaction of obtained imidazo methanol derivatives with chloroacetylchloride reagent and ring reaction of substitution products were investigated. It was determined that 1,4-imidazoxazinone derivative was obtained as a result of the cyclization reaction. The intermediate products obtained during the cyclization reaction were isolated, and the path of the reaction under different conditions was discussed.
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Affiliation(s)
- Volkan Taşdemir
- Muradiye Vocational School, Van Yüzüncü Yıl University, Van Turkey
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5
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Fingerhut A, Vargas-Caporali J, Leyva-Ramírez MA, Juaristi E, Tsogoeva SB. Biomimetic Non-Heme Iron-Catalyzed Epoxidation of Challenging Terminal Alkenes Using Aqueous H2O2 as an Environmentally Friendly Oxidant. Molecules 2019; 24:molecules24173182. [PMID: 31480640 PMCID: PMC6749192 DOI: 10.3390/molecules24173182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/20/2019] [Accepted: 08/23/2019] [Indexed: 11/21/2022] Open
Abstract
Catalysis mediated by iron complexes is emerging as an eco-friendly and inexpensive option in comparison to traditional metal catalysis. The epoxidation of alkenes constitutes an attractive application of iron(III) catalysis, in which terminal olefins are challenging substrates. Herein, we describe our study on the design of biomimetic non-heme ligands for the in situ generation of iron(III) complexes and their evaluation as potential catalysts in epoxidation of terminal olefins. Since it is well-known that active sites of oxidases might involve imidazole fragment of histidine, various simple imidazole derivatives (seven compounds) were initially evaluated in order to find the best reaction conditions and to develop, subsequently, more elaborated amino acid-derived peptide-like chiral ligands (10 derivatives) for enantioselective epoxidations.
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Affiliation(s)
- Anja Fingerhut
- Department of Chemistry and Pharmacy, Institute of Organic Chemistry I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Jorge Vargas-Caporali
- Department of Chemistry, Centro de Investigación y de Estudios Avanzados, Av. Instituto Politécnico Nacional 2508, 07360 Ciudad de México, Mexico
| | - Marco Antonio Leyva-Ramírez
- Department of Chemistry, Centro de Investigación y de Estudios Avanzados, Av. Instituto Politécnico Nacional 2508, 07360 Ciudad de México, Mexico
| | - Eusebio Juaristi
- Department of Chemistry, Centro de Investigación y de Estudios Avanzados, Av. Instituto Politécnico Nacional 2508, 07360 Ciudad de México, Mexico.
- El Colegio Nacional, Donceles # 104, Centro Histórico, 06020 Ciudad de México, Mexico.
| | - Svetlana B Tsogoeva
- Department of Chemistry and Pharmacy, Institute of Organic Chemistry I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany.
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6
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Ma X, Su J, Zhang X, Song Q. Chlorodifluoromethane as a C1 Synthon in the Assembly of N-Containing Compounds. iScience 2019; 19:1-13. [PMID: 31344644 PMCID: PMC6658997 DOI: 10.1016/j.isci.2019.07.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/09/2019] [Accepted: 07/02/2019] [Indexed: 12/03/2022] Open
Abstract
The development of C1 synthons to afford the products that add one extra carbon has become an important research theme in the past decade, and significant progress has been achieved with CO2, CO, HCOOH, and others as C1 units. Despite the great advance, the search for new C1 synthons that display unique reactivity, complement to the current C1 sources, and add more value to C1 chemistry is still desirable. Herein, we report a quadruple cleavage of chlorodifluoromethane to yield a C1 source, which was successfully employed in the construction of various N-containing compounds especially with pharmaceutical molecules under mild conditions. This strategy provides a useful method for late-stage modification of pharmaceutical compounds. Four bonds in ClCF2H were orderly cleaved under basic conditions in the absence of transition metals. Preliminary mechanistic studies revealed that (E)-N-phenylformimidoyl fluoride intermediate is involved in this process by in situ1H NMR studies and control experiments. Quadruple cleavage of ClCF2H to afford a C1 synthon The cleavage of two stable C(sp3)-F bonds in aliphatic gem-difluoroalkanes Enrich C1 chemistry, green chemistry, and fluorine chemistry Various N-containing compounds were afforded via different role of ClCF2H
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Affiliation(s)
- Xingxing Ma
- The Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Jianke Su
- The Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai 200032, China.
| | - Qiuling Song
- The Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China; State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China; Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian 350108, China.
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7
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Self-assembled ruthenium (II) metallacycles and metallacages with imidazole-based ligands and their in vitro anticancer activity. Proc Natl Acad Sci U S A 2019; 116:4090-4098. [PMID: 30765514 DOI: 10.1073/pnas.1818677116] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Six tetranuclear rectangular metallacycles were synthesized via the [2+2] coordination-driven self-assembly of imidazole-based ditopic donor 1,4-bis(imidazole-1-yl)benzene and 1,3-bis(imidazol-1-yl)benzene, with dinuclear half-sandwich p-cymene ruthenium(II) acceptors [Ru2(µ-η4-oxalato)(η6-p-cymene)2](SO3CF3)2, [Ru2(µ-η4-2,5-dioxido-1,4-benzoquinonato)(η6-p-cymene)2](SO3CF3)2 and [Ru2(µ-η4-5,8-dioxido-1,4-naphtoquinonato)(η6-p-cymene)2](SO3CF3)2, respectively. Likewise, three hexanuclear trigonal prismatic metallacages were prepared via the [2+3] self-assembly of tritopic donor of 1,3,5-tri(1H-imidazol-1-yl)benzene with these ruthenium(II) acceptors respectively. Self-selection of the single symmetrical and stable metallacycle and cage was observed although there is the possibility of forming different conformational isomeric products due to different binding modes of these imidazole-based donors. The self-assembled macrocycles and cage containing the 5,8-dioxido-1,4-naphtoquinonato (donq) spacer exhibited good anticancer activity on all tested cancer cell lines (HCT-116, MDA-MB-231, MCF-7, HeLa, A549, and HepG-2), and showed decreased cytotoxicities in HBE and THLE-2 normal cells. The effect of Ru and imidazole moiety of these assemblies on the anticancer activity was discussed. The study of binding ability of these donq-based Ru assemblies with ctDNA indicated that the complex 9 with 180° linear 1 ligand has the highest bonding constant K b to ctDNA.
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8
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Cusso O, Giuliano MW, Ribas X, Miller SJ, Costas M. A Bottom Up Approach Towards Artificial Oxygenases by Combining Iron Coordination Complexes and Peptides. Chem Sci 2017; 8:3660-3667. [PMID: 29270284 PMCID: PMC5734052 DOI: 10.1039/c7sc00099e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The combination of peptides and a chiral iron coordination complex catalyzes high yield highly asymmetric epoxidation with aqueous hydrogen peroxide.
Supramolecular systems resulting from the combination of peptides and a chiral iron coordination complex catalyze asymmetric epoxidation with aqueous hydrogen peroxide, providing good to excellent yields and high enantioselectivities in short reaction times. The peptide is shown to play a dual role; the terminal carboxylic acid assists the iron center in the efficient H2O2 activation step, while its β-turn structure is crucial to induce high enantioselectivity in the oxygen delivering step. The high level of stereoselection (84–92% ee) obtained by these supramolecular catalysts in the epoxidation of 1,1′-alkyl ortho-substituted styrenes, a notoriously challenging class of substrates for asymmetric catalysis, is not attainable with any other epoxidation methodology described so far. The current work, combining an iron center ligated to N and O based ligands, and a peptide scaffold that shapes the second coordination sphere, may be seen as a bottom up approach towards the design of artificial oxygenases.
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Affiliation(s)
- Olaf Cusso
- Institut de Química Computational i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
| | - Michael W Giuliano
- Department of Chemistry and Biochemistry, College of Charleston, South Carolina, United States
| | - Xavi Ribas
- Institut de Química Computational i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
| | - Scott J Miller
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Miquel Costas
- Institut de Química Computational i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia, Spain
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9
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Roy B, Saha R, Ghosh AK, Patil Y, Mukherjee PS. Versatility of Two Diimidazole Building Blocks in Coordination-Driven Self-Assembly. Inorg Chem 2017; 56:3579-3588. [DOI: 10.1021/acs.inorgchem.7b00037] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Bijan Roy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Rupak Saha
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Aloke Kumar Ghosh
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Yogesh Patil
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Partha Sarathi Mukherjee
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560012, India
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10
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Lennon D, Winfield JM. Metal Fluorides, Metal Chlorides and Halogenated Metal Oxides as Lewis Acidic Heterogeneous Catalysts. Providing Some Context for Nanostructured Metal Fluorides. Molecules 2017; 22:molecules22020201. [PMID: 28134836 PMCID: PMC6155673 DOI: 10.3390/molecules22020201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/13/2017] [Accepted: 01/17/2017] [Indexed: 11/16/2022] Open
Abstract
Aspects of the chemistry of selected metal fluorides, which are pertinent to their real or potential use as Lewis acidic, heterogeneous catalysts, are reviewed. Particular attention is paid to β-aluminum trifluoride, aluminum chlorofluoride and aluminas γ and η, whose surfaces become partially fluorinated or chlorinated, through pre-treatment with halogenating reagents or during a catalytic reaction. In these cases, direct comparisons with nanostructured metal fluorides are possible. In the second part of the review, attention is directed to iron(III) and copper(II) metal chlorides, whose Lewis acidity and potential redox function have had important catalytic implications in large-scale chlorohydrocarbons chemistry. Recent work, which highlights the complexity of reactions that can occur in the presence of supported copper(II) chloride as an oxychlorination catalyst, is featured. Although direct comparisons with nanostructured fluorides are not currently possible, the work could be relevant to possible future catalytic developments in nanostructured materials.
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Affiliation(s)
- David Lennon
- School of Chemistry, University of Glasgow, G12 8QQ Glasgow, UK.
| | - John M Winfield
- School of Chemistry, University of Glasgow, G12 8QQ Glasgow, UK.
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11
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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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12
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Cuesta-Aluja L, Masdeu-Bultó AM. Iron(III) Versatile Catalysts for Cycloaddition of CO2to Epoxides and Epoxidation of Alkenes. ChemistrySelect 2016. [DOI: 10.1002/slct.201600488] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Laia Cuesta-Aluja
- Department of Physical and Inorganic Chemistry; Marcel⋅lí Domingo s/n. 43007 Tarragona Spain
| | - Anna M. Masdeu-Bultó
- Department of Physical and Inorganic Chemistry; Marcel⋅lí Domingo s/n. 43007 Tarragona Spain
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13
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Synthesis, isolation and characterization of dinuclear oxidodiiron(III) complexes modified by monodentate pyridines. INORG CHEM COMMUN 2016. [DOI: 10.1016/j.inoche.2016.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Cussó O, Cianfanelli M, Ribas X, Klein Gebbink RJM, Costas M. Iron Catalyzed Highly Enantioselective Epoxidation of Cyclic Aliphatic Enones with Aqueous H2O2. J Am Chem Soc 2016; 138:2732-8. [DOI: 10.1021/jacs.5b12681] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Olaf Cussó
- QBIS
Research Group, Institut de Química Computacional i Catàlisi
(IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia Spain
| | - Marco Cianfanelli
- QBIS
Research Group, Institut de Química Computacional i Catàlisi
(IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia Spain
| | - Xavi Ribas
- QBIS
Research Group, Institut de Química Computacional i Catàlisi
(IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia Spain
| | - Robertus J. M. Klein Gebbink
- Organic Chemistry & Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Miquel Costas
- QBIS
Research Group, 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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15
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Matsunaga H, Ishizuka T, Eshita I, Ando S. Efficient Preparation of a Versatile Chiral Synthon for 1,2-Diamines via the Fe(III)-Catalyzed Diastereoselective Oxidation of 2-Imidazolone and Its Application. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)96] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Döhlert P, Irran E, Kretschmer R, Enthaler S. Synthesis, characterization and application of iron N-substituted imidazole complexes with the motif ClFeL4OFeCl3. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2014.10.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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17
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18
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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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19
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20
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Mafua R, Jenny T, Labat G, Neels A, Stoeckli-Evans H. Crystal structures of trans-di-chlorido-tetra-kis-[1-(2,6-diiso-propyl-phen-yl)-1H-imidazole-κN (3)]iron(II), trans-di-bromido-tetra-kis-[1-(2,6-diiso-propyl-phen-yl)-1H-imidazole-κN (3)]iron(II) and trans-di-bromido-tetra-kis-[1-(2,6-diiso-propyl-phen-yl)-1H-imidazole-κN (3)]iron(II) diethyl ether disolvate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:72-6. [PMID: 25249858 PMCID: PMC4158527 DOI: 10.1107/s1600536814014056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 06/15/2014] [Indexed: 11/10/2022]
Abstract
The title compounds are iron(II) dihalide complexes of the bulky arylimidazole ligand 1-(2,6-diisopropylphenyl)-1H-imidazole. The FeCl2 and FeBr2 complexes are isotypic, while the third compound, also an FeBr2 complex, crystallizes as a diethyl ether disolvate. The title compounds, [FeCl2(C15H20N2)4], (I), [FeBr2(C15H20N2)4], (II), and [FeBr2(C15H20N2)4]·2C4H10O, (IIb), respectively, all have triclinic symmetry, with (I) and (II) being isotypic. The FeII atoms in each of the structures are located on an inversion center. They have octahedral FeX2N4 (X = Cl and Br, respectively) coordination spheres with the FeII atom coordinated by two halide ions in a trans arrangement and by the tertiary N atom of four arylimidazole ligands [1-(2,6-diisopropylphenyl)-1H-imidazole] in the equatorial plane. In the two independent ligands, the benzene and imidazole rings are almost normal to one another, with dihedral angles of 88.19 (15) and 79.26 (14)° in (I), 87.0 (3) and 79.2 (3)° in (II), and 84.71 (11) and 80.58 (13)° in (IIb). The imidazole rings of the two independent ligand molecules are inclined to one another by 70.04 (15), 69.3 (3) and 61.55 (12)° in (I), (II) and (IIb), respectively, while the benzene rings are inclined to one another by 82.83 (13), 83.0 (2) and 88.16 (12)°, respectively. The various dihedral angles involving (IIb) differ slightly from those in (I) and (II), probably due to the close proximity of the diethyl ether solvent molecule. There are a number of C—H⋯halide hydrogen bonds in each molecule involving the CH groups of the imidazole units. In the structures of compounds (I) and (II), molecules are linked via pairs of C—H⋯halogen hydrogen bonds, forming chains along the a axis that enclose R22(12) ring motifs. The chains are linked by C—H⋯π interactions, forming sheets parallel to (001). In the structure of compound (IIb), molecules are linked via pairs of C—H⋯halogen hydrogen bonds, forming chains along the b axis, and the diethyl ether solvent molecules are attached to the chains via C—H⋯O hydrogen bonds. The chains are linked by C—H⋯π interactions, forming sheets parallel to (001). In (I) and (II), the methyl groups of an isopropyl group are disordered over two positions [occupancy ratio = 0.727 (13):0.273 (13) and 0.5:0.5, respectively]. In (IIb), one of the ethyl groups of the diethyl ether solvent molecule is disordered over two positions (occupancy ratio = 0.5:0.5).
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Affiliation(s)
- Roger Mafua
- Department of Chemistry, University of Fribourg, Av. de Perolles, CH-1700 Fribourg, Switzerland
| | - Titus Jenny
- Department of Chemistry, University of Fribourg, Av. de Perolles, CH-1700 Fribourg, Switzerland
| | - Gael Labat
- Benefri Crystallography Service, University of Neuchâtel, Av. de Bellvaux 51, CH-2000 Neuchâtel, Switzerland
| | - Antonia Neels
- Benefri Crystallography Service, University of Neuchâtel, Av. de Bellvaux 51, CH-2000 Neuchâtel, Switzerland
| | - Helen Stoeckli-Evans
- Institute of Physics, University of Neuchâtel, rue Emile-Argand 11, CH-2000 Neuchâtel, Switzerland
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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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22
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Journot G, Neier R, Stoeckli-Evans H. Phase-transformation-induced twinning of an iron(III) calix[4]pyrrolidine complex. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2014; 70:644-9. [PMID: 24992103 DOI: 10.1107/s2053229614012157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 05/26/2014] [Indexed: 11/10/2022]
Abstract
The title compound, tetrachlorido-1κCl;2κ(3)Cl-(2,2,7,7,12,12,17,17-octamethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1(3,6).1(8,11).1(13,16)]tetracosane-1κ(4)N,N',N'',N''')-μ2-oxido-diiron(III), [Fe2Cl4O(C28H52N4)], undergoes a slow phase transformation at ca 173 K from monoclinic space group P2(1)/n, denoted form (I), to the maximal non-isomorphic subgroup, triclinic space group P1, denoted form (II), which is accompanied by nonmerohedral twinning [twin fractions of 0.693 (4) and 0.307 (4)]. The transformation was found to be reversible, as on raising the temperature the crystal reverted to monoclinic form (I). In the asymmetric unit of form (I), Z' = 1, while in form (II), Z' = 2, with a very small reduction (ca 1.8%) in the unit-cell volume. The two independent molecules (A and B) in form (II) are related by a pseudo-twofold screw axis along the b axis. The molecular overlay of molecule A on molecule B has an r.m.s. deviation of 0.353 Å, with the largest distance between two equivalent atoms being 1.202 Å. The reaction of calix[4]pyrrolidine, the fully reduced form of meso-octamethylporphyrinogen, with FeCl3 gave a red-brown solid that was recrystallized from ethanol in air, resulting in the formation of the title compound. In both forms, (I) and (II), the Fe(III) atoms are coordinated to the macrocyclic ligand and have distorted octahedral FeN4OCl coordination spheres. These Fe(III) atoms lie out of the mean plane of the four N atoms, displaced towards the O atom of the [OFeCl3] unit by 0.2265 (5) Å in form (I), and by 0.2210 (14) and 0.2089 (14) Å, respectively, in the two independent molecules (A and B) of form (II). The geometry of the [OFeCl3] units are similar, with each Fe(III) atom having a tetrahedral coordination sphere. The NH H atoms are directed below the planes of the macrocycles and are hydrogen bonded to the coordinated Cl(-) ions. There are also intramolecular C-H···Cl hydrogen bonds present in both (I) and (II). In form (I), there are no significant intermolecular interactions present. In form (II), the individual molecules are arranged in alternate layers parallel to the ac plane. The B molecules are linked by a C-H···Cl hydrogen bond, forming chains along [100].
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Affiliation(s)
- Guillaume Journot
- Institute of Chemistry, University of Neuchâtel, Av. de Bellevaux 51, CH-2000 Neuchâtel, Switzerland
| | - Reinhard Neier
- Institute of Chemistry, University of Neuchâtel, Av. de Bellevaux 51, CH-2000 Neuchâtel, Switzerland
| | - Helen Stoeckli-Evans
- Institute of Physics, University of Neuchâtel, rue Emile-Argand 11, CH-2000 Neuchâtel, Switzerland
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Zhang B, Li F, Yu F, Cui H, Zhou X, Li H, Wang Y, Sun L. Homogeneous Oxidation of Water by Iron Complexes with Macrocyclic Ligands. Chem Asian J 2014; 9:1515-8. [DOI: 10.1002/asia.201400066] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/12/2014] [Indexed: 01/22/2023]
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24
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Banerjee D, Jagadeesh RV, Junge K, Pohl MM, Radnik J, Brückner A, Beller M. Convenient and Mild Epoxidation of Alkenes Using Heterogeneous Cobalt Oxide Catalysts. Angew Chem Int Ed Engl 2014; 53:4359-63. [DOI: 10.1002/anie.201310420] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Indexed: 11/09/2022]
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Banerjee D, Jagadeesh RV, Junge K, Pohl MM, Radnik J, Brückner A, Beller M. Convenient and Mild Epoxidation of Alkenes Using Heterogeneous Cobalt Oxide Catalysts. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310420] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Li Y, Yu S, Wu X, Xiao J, Shen W, Dong Z, Gao J. Iron Catalyzed Asymmetric Hydrogenation of Ketones. J Am Chem Soc 2014; 136:4031-9. [DOI: 10.1021/ja5003636] [Citation(s) in RCA: 192] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yanyun Li
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering
Laboratory for Green Chemical Productions of Alcohols, Ethers, and
Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - Shenluan Yu
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering
Laboratory for Green Chemical Productions of Alcohols, Ethers, and
Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - Xiaofeng Wu
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - Jianliang Xiao
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - Weiyi Shen
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering
Laboratory for Green Chemical Productions of Alcohols, Ethers, and
Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Zhenrong Dong
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering
Laboratory for Green Chemical Productions of Alcohols, Ethers, and
Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Jingxing Gao
- State
Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering
Laboratory for Green Chemical Productions of Alcohols, Ethers, and
Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
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Matsunaga H, Ishizuka T, Eshita I, Tsunoda S, Ishimoto N, Ando S. Highly Efficient Preparation of Both Enantiomers of Versatile Chiral Synthon for 1,2-Diamines via the Fe(III)-Catalyzed Oxidation of 2-Imidazolone. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Cussó O, Garcia-Bosch I, Ribas X, Lloret-Fillol J, Costas M. Asymmetric epoxidation with H2O2 by manipulating the electronic properties of non-heme iron catalysts. J Am Chem Soc 2013; 135:14871-8. [PMID: 24060452 DOI: 10.1021/ja4078446] [Citation(s) in RCA: 186] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A non-heme iron complex that catalyzes highly enantioselective epoxidation of olefins with H2O2 is described. Improvement of enantiomeric excesses is attained by the use of catalytic amounts of carboxylic acid additives. Electronic effects imposed by the ligand on the iron center are shown to synergistically cooperate with catalytic amounts of carboxylic acids in promoting efficient O-O cleavage and creating highly chemo- and enantioselective epoxidizing species which provide a broad range of epoxides in synthetically valuable yields and short reaction times.
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Affiliation(s)
- Olaf Cussó
- QBIS ResearchGroup, 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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29
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Lu LQ, Li Y, Junge K, Beller M. Iron-catalyzed hydrogenation for the in situ regeneration of an NAD(P)H model: biomimetic reduction of α-keto-/α-iminoesters. Angew Chem Int Ed Engl 2013; 52:8382-6. [PMID: 23804227 DOI: 10.1002/anie.201301972] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 05/31/2013] [Indexed: 12/31/2022]
Affiliation(s)
- Liang-Qiu Lu
- Leibniz-Institut für Katalyse an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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30
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Lu LQ, Li Y, Junge K, Beller M. Iron-Catalyzed Hydrogenation for the In Situ Regeneration of an NAD(P)H Model: Biomimetic Reduction of α-Keto-/α-Iminoesters. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301972] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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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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32
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De Baerdemaeker T, Steenackers B, De Vos D. Ti-substituted zeolite Beta: a milestone in the design of large pore oxidation catalysts. Chem Commun (Camb) 2013; 49:7474-6. [DOI: 10.1039/c3cc40747k] [Citation(s) in RCA: 27] [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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33
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dos Santos MR, Diniz JR, Arouca AM, Gomes AF, Gozzo FC, Tamborim SM, Parize AL, Suarez PAZ, Neto BAD. Ionically tagged iron complex-catalyzed epoxidation of olefins in imidazolium-based ionic liquids. CHEMSUSCHEM 2012; 5:716-726. [PMID: 22473642 DOI: 10.1002/cssc.201100453] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A new ionophilic ligand and a new ionically tagged imidazolium-based iron(III) complex were synthesized and applied in the air oxidation (also hydrogen peroxide) of alkenes in imidazolium-based ionic liquids. At least ten recycling reactions were performed. The epoxidized olefin was obtained in very good yields of 84-91 %. Some important mechanistic insights are also provided based on electrospray ionization quadrupole-time of flight mass spectrometry for the oxidation reaction. These results indicate that oxidations can take place by two different pathways, depending on the reaction condition: a radical or a concerted mechanism. These results contribute towards a better understanding of iron-catalyzed oxidation mechanisms.
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Affiliation(s)
- Marcelo R dos Santos
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Brasília-DF, Brazil
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34
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Herbert M, Montilla F, Álvarez E, Galindo A. New insights into the mechanism of oxodiperoxomolybdenum catalysed olefin epoxidation and the crystal structures of several oxo–peroxo molybdenum complexes. Dalton Trans 2012; 41:6942-56. [DOI: 10.1039/c2dt12284g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Join B, Möller K, Ziebart C, Schröder K, Gördes D, Thurow K, Spannenberg A, Junge K, Beller M. Selective Iron-Catalyzed Oxidation of Benzylic and Allylic Alcohols. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100210] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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36
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Möller K, Wienhöfer G, Westerhaus F, Junge K, Beller M. Oxidation of 1,2,4-trimethylbenzene (TMB), 2,3,6-trimethylphenol (TMP) and 2-methylnaphthalene to 2,3,5-trimethylbenzoquinone (TMBQ) and menadione (vitamin K3). Catal Today 2011. [DOI: 10.1016/j.cattod.2011.02.069] [Citation(s) in RCA: 29] [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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37
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Synthesis and use of trans-dichlorido-tetrakis-(N-R-imidazole)nickel(II) complexes in Kumada–Tamao–Corriu cross-coupling reactions. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.05.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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38
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Lyakin OY, Bryliakov KP, Talsi EP. EPR, 1H and 2H NMR, and reactivity studies of the iron-oxygen intermediates in bioinspired catalyst systems. Inorg Chem 2011; 50:5526-38. [PMID: 21598909 DOI: 10.1021/ic200088e] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Complexes [(BPMEN)Fe(II)(CH(3)CN)(2)](ClO(4))(2) (1, BPMEN = N,N'-dimethyl-N,N'-bis(2-pyridylmethyl)-1,2-diaminoethane) and [(TPA)Fe(II)(CH(3)CN)(2)](ClO(4))(2) (2, TPA = tris(2-pyridylmethyl)amine) are among the best nonheme iron-based catalysts for bioinspired oxidation of hydrocarbons. Using EPR and (1)H and (2)H NMR spectroscopy, the iron-oxygen intermediates formed in the catalyst systems 1,2/H(2)O(2); 1,2/H(2)O(2)/CH(3)COOH; 1,2/CH(3)CO(3)H; 1,2/m-CPBA; 1,2/PhIO; 1,2/(t)BuOOH; and 1,2/(t)BuOOH/CH(3)COOH have been studied (m-CPBA is m-chloroperbenzoic acid). The following intermediates have been observed: [(L)Fe(III)(OOR)(S)](2+), [(L)Fe(IV)═O(S)](2+) (L = BPMEN or TPA, R = H or (t)Bu, S = CH(3)CN or H(2)O), and the iron-oxygen species 1c (L = BPMEN) and 2c (L = TPA). It has been shown that 1c and 2c directly react with cyclohexene to yield cyclohexene oxide, whereas [(L)Fe(IV)═O(S)](2+) react with cyclohexene to yield mainly products of allylic oxidation. [(L)Fe(III)(OOR)(S)](2+) are inert in this reaction. The analysis of EPR and reactivity data shows that only those catalyst systems which display EPR spectra of 1c and 2c are able to selectively epoxidize cyclohexene, thus bearing strong evidence in favor of the key role of 1c and 2c in selective epoxidation. 1c and 2c were tentatively assigned to the oxoiron(V) intermediates.
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Affiliation(s)
- Oleg Y Lyakin
- Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Lavrentieva 5, Novosibirsk 630090, Russian Federation
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39
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Dakkach M, Fontrodona X, Parella T, Atlamsani A, Romero I, Rodríguez M. A Novel Carbene Ruthenium Complex as Reusable and Selective Two-Electron Catalyst for Alkene Epoxidation. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000686] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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40
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Schröder K, Join B, Amali AJ, Junge K, Ribas X, Costas M, Beller M. A Biomimetic Iron Catalyst for the Epoxidation of Olefins with Molecular Oxygen at Room Temperature. Angew Chem Int Ed Engl 2011; 50:1425-9. [PMID: 21290527 DOI: 10.1002/anie.201004623] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Indexed: 11/12/2022]
Affiliation(s)
- Kristin Schröder
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Germany
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41
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Schröder K, Join B, Amali AJ, Junge K, Ribas X, Costas M, Beller M. Ein biomimetischer Eisenkatalysator für die Epoxidation von Olefinen mit molekularem Sauerstoff bei Raumtemperatur. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201004623] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Schröder K, Junge K, Bitterlich B, Beller M. Fe-Catalyzed Oxidation Reactions of Olefins, Alkanes, and Alcohols: Involvement of Oxo- and Peroxo Complexes. TOP ORGANOMETAL CHEM 2011. [DOI: 10.1007/978-3-642-14670-1_3] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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43
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Jiao M, Matsunaga H, Ishizuka T. A Simple, Iron-Catalyzed, Pyridine-Assisted Hydrogen Peroxide Epoxidation System. Chem Pharm Bull (Tokyo) 2011; 59:799-801. [DOI: 10.1248/cpb.59.799] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Mingyu Jiao
- Faculty of Life Sciences, Kumamoto University
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44
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Möller K, Wienhöfer G, Schröder K, Join B, Junge K, Beller M. Selective iron-catalyzed oxidation of phenols and arenes with hydrogen peroxide: synthesis of vitamin e intermediates and vitamin K(3). Chemistry 2010; 16:10300-3. [PMID: 20661966 DOI: 10.1002/chem.201001429] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Konstanze Möller
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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45
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Design of a bio-inspired imidazole-based iron catalyst for epoxidation of olefins: Mechanistic insights. Catal Today 2010. [DOI: 10.1016/j.cattod.2010.04.034] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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46
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Enthaler S, Schröder K, Inoue S, Eckhardt B, Junge K, Beller M, Drieß M. Formamidines - Versatile Ligands for Zinc-Catalyzed Hydrosilylation and Iron-Catalyzed Epoxidation Reactions. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000648] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Schröder K, Enthaler S, Join B, Junge K, Beller M. Iron-Catalyzed Epoxidation of Aromatic Olefins and 1,3-Dienes. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000091] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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48
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Herbert M, Álvarez E, Cole-Hamilton DJ, Montilla F, Galindo A. Olefin epoxidation by hydrogen peroxide catalysed by molybdenum complexes in ionic liquids and structural characterisation of the proposed intermediate dioxoperoxomolybdenum species. Chem Commun (Camb) 2010; 46:5933-5. [DOI: 10.1039/c0cc00462f] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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