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Novoa-Ramírez CS, Silva-Becerril A, González-Ballesteros MM, Gomez-Vidal V, Flores-Álamo M, Ortiz-Frade L, Gracia-Mora J, Ruiz-Azuara L. Biological activity of mixed chelate copper(II) complexes, with substituted diimine and tridentate Schiff bases (NNO) and their hydrogenated derivatives as secondary ligands: Casiopeína's fourth generation. J Inorg Biochem 2023; 242:112097. [PMID: 36812707 DOI: 10.1016/j.jinorgbio.2022.112097] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/29/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
We synthesize and characterize nine copper(II) compounds. Four with general formula [Cu(NNO)(NO3)] and five mixed chelates [Cu(NNO)(N-N)]+, where NNO corresponds to asymmetric salen ligands (E)-2-((2-(methylamino)ethylimino)methyl)phenolate (L1) and (E)-3-((2-(methylamino)ethylimino)methyl)naphthalenolate (LN1); and their hydrogenated derivatives 2-((2-(methylamino)ethylamino)methyl)phenolate (LH1) and 3-((2-(methylamino)ethylamino)methyl)naphthalenolate (LNH1); and N-N correspond to 4,4'-dimethyl-2,2'-bipiridyne(dmbpy) or 1,10-phenanthroline (phen). Using EPR, the geometries of the compounds in solution in DMSO were assigned, [Cu(LN1)(NO3)] and [Cu(LNH1)(NO3)] a square-planar, [Cu(L1)(NO3)], [Cu(LH1)(NO3)], [Cu(L1)(dmby)]+ and [Cu(LH1)(dmby)]+ a square-based pyramid; and [Cu(LN1)(dmby)]+, [Cu(LNH1)(dmby)]+ and [Cu(L1)(phen)]+ and elongated octahedral. By X-ray it was observed that [Cu(L1)(dmby)]+ and. [Cu(LN1)(dmby)]+ presented a square-based pyramidal, and [Cu(LN1)(NO3)]+ a square-planar geometry. The electrochemical study showed that copper reduction process is a quasi-reversible system, where the complexes with hydrogenated ligands were less oxidizing. The cytotoxicity of the complexes was tested by MTT assay, all the compounds showed biological activity in HeLa cell line, the mixed compounds were the more active ones. Naphthalene moiety, imine hydrogenation and aromatic diimine coordination, increased biological activity. A structure-activity relationships were found: Log(IC50) = - 1.01(Epc) - 0.35(Conjugated Rings) + 0.87, for Schiff base complexes and Log(IC50) = 0.078(Epc) - 0.32(Conjugated Rings) + 1.94, for hydrogenated complexes; the less oxidizing species with a great number of conjugated rings presented the best biological activity. Complexes-DNA binding constants were obtained by uv-vis studies using CT-DNA, the results suggested that the complexes can interact through the grooves, except the phenanthroline mixed complex that intercalate with DNA. Gel electrophoresis study with pBR 322 showed that compounds can produce changes in the form of DNA and some complexes can cleave DNA in the presence of H2O2.
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Affiliation(s)
- Cynthia Sinai Novoa-Ramírez
- Departamento de Química Inorgánica y Nuclear, Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Coyoacán, 04510 Ciudad de México, Mexico
| | - Areli Silva-Becerril
- Instituto de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Coyoacán, 04510 Ciudad de México, Mexico
| | - Mauricio Misael González-Ballesteros
- Departamento de Química Inorgánica y Nuclear, Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Coyoacán, 04510 Ciudad de México, Mexico
| | - Virginia Gomez-Vidal
- Instituto de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Coyoacán, 04510 Ciudad de México, Mexico
| | - Marcos Flores-Álamo
- Unidad de Servicios de Apoyo a la Investigación y a la Industria, Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Coyoacán, 04510 Ciudad de México, Mexico
| | - Luis Ortiz-Frade
- Departamento de Electroquímica, Centro de Investigación y Desarrollo Tecnológico en Electroquímica S.C. Parque Tecnológico, Sanfandila, Pedro de Escobedo, 76703 Querétaro, Mexico
| | - Jesús Gracia-Mora
- Departamento de Química Inorgánica y Nuclear, Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Coyoacán, 04510 Ciudad de México, Mexico
| | - Lena Ruiz-Azuara
- Departamento de Química Inorgánica y Nuclear, Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Coyoacán, 04510 Ciudad de México, Mexico.
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2
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Mizumachi T, Sato M, Kaneko M, Takeyama T, Tsushima S, Takao K. Fully Chelating N 3O 2-Pentadentate Planar Ligands Designed for the Strongest and Selective Capture of Uranium from Seawater. Inorg Chem 2022; 61:6175-6181. [PMID: 35394284 DOI: 10.1021/acs.inorgchem.2c00306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Based on the unique fivefold equatorial coordination of UO22+, water-compatible pentadentate planar ligands, H2saldian and its derivatives, were designed for the strong and selective capture of UO22+ in seawater. In the simulated seawater condition (0.5 M NaCl + 2.3 mM HCO3-/CO32-, pH 8), saldian2- shows the strongest complexation with UO22+ to form UO2(saldian) (log β11 = 28.05 ± 0.07), which is more than 10 order of magnitude greater than amidoxime-based or -inspired ligand systems most commonly employed for U capture from seawater. Good selectivity for UO22+ from other metal ions coexisting in seawater was also demonstrated.
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Affiliation(s)
- Takumi Mizumachi
- Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Minami Sato
- Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Masashi Kaneko
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, 2-4, Shirakata, Tokai-mura, Ibaraki 319-1195, Japan
| | - Tomoyuki Takeyama
- Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Satoru Tsushima
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Bautzner Landstraße 400, 01328 Dresden, Germany.,Tokyo Tech World Research Hub Initiative (WRHI), Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Koichiro Takao
- Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
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3
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Ghorbani-Choghamarani A, Taherinia Z. Sustainable approaches in the catalytic synthesis of optically active and inactive diaryl sulfoxides. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Plyuta N, Kokozay VN, Rusanova JA, Buvailo H, Goreshnik E, Petrusenko S. A bis-chelate o-vanillin-2-ethano-lamine copper(II) complex bearing both imine and amine forms of the ligand. Acta Crystallogr E Crystallogr Commun 2021; 77:1272-1275. [PMID: 34925896 PMCID: PMC8647731 DOI: 10.1107/s205698902101166x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/04/2021] [Indexed: 06/14/2023]
Abstract
The mol-ecular bis-chelate complex (2-{[(2-hy-droxy-ethyl-κO)amino-κN]meth-yl}-6-meth-oxy-phenolato-κO)(2-{[(2-hy-droxy-eth-yl)imino-κN]meth-yl}-6-meth-oxy-phenolato-κO)copper(II), [Cu(C10H14NO3)(C10H12NO3)] or [Cu(HL im)(HL am); HL im = C10H14NO3; HL am = C10H12NO3, represents the first compound containing a salicyl-idene-2-ethano-lamine type ligand in both imino HL im (Schiff base) and amino HL am (reduced Schiff base) forms that has been structurally characterized on the basis of X-ray data. Two mol-ecules of the monodeprotonated ligands coordinate the CuII ion in an (N,O phen)-bidentate and an (N,O phen,O alc)-tridentate fashion in the case of the imino and amino forms, respectively. The shape of the CuN2O3 coordination polyhedron is a distorted square-pyramid (geometry index τ5 = 0.26). Inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, involving H atoms of the amino and hy-droxy-ethyl groups, create a two-dimensional supra-molecular array extending parallel to (010).
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Affiliation(s)
- Nataliya Plyuta
- Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
| | - Vladimir N. Kokozay
- Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
| | - Julia A. Rusanova
- Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
| | - Halyna Buvailo
- Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
| | - Evgeny Goreshnik
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova, cesta 39, SI-1000 Ljubljana, Slovenia
| | - Svitlana Petrusenko
- Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
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5
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Devonport J, Sully L, Boudalis AK, Hassell-Hart S, Leech MC, Lam K, Abdul-Sada A, Tizzard GJ, Coles SJ, Spencer J, Vargas A, Kostakis GE. Room-Temperature Cu(II) Radical-Triggered Alkyne C-H Activation. JACS AU 2021; 1:1937-1948. [PMID: 34841411 PMCID: PMC8611675 DOI: 10.1021/jacsau.1c00310] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Indexed: 06/13/2023]
Abstract
A dimeric Cu(II) complex [Cu(II)2L2(μ2-Cl)Cl] (1) built from an asymmetric tridentate ligand (2-(((2-aminocyclohexyl)imino)methyl)-4,6-di-tert-butylphenol) and weakly coordinating anions has been synthesized and structurally characterized. In dichloromethane solution, 1 exists in a monomeric [Cu(II)LCl] (1') (85%)-dimeric (1) (15%) equilibrium, and cyclic voltammetry (CV) and electron paramagnetic resonance (EPR) studies indicate structural stability and redox retention. Addition of phenylacetylene to the CH2Cl2 solution populates 1' and leads to the formation of a transient radical species. Theoretical studies support this notion and show that the radical initiates an alkyne C-H bond activation process via a four-membered ring (Cu(II)-O···H-Calkyne) intermediate. This unusual C-H activation method is applicable for the efficient synthesis of propargylamines, without additives, within 16 h, at low loadings and in noncoordinating solvents including late-stage functionalization of important bioactive molecules. Single-crystal X-ray diffraction studies, postcatalysis, confirmed the framework's stability and showed that the metal center preserves its oxidation state. The scope and limitations of this unconventional protocol are discussed.
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Affiliation(s)
- Jack Devonport
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, U.K.
| | - Lauren Sully
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, U.K.
| | - Athanassios K. Boudalis
- Institut
de Chimie de Strasbourg (UMR 7177, CNRS-Unistra), Université
de Strasbourg, 4 rue Blaise Pascal, CS 90032, F-67081 Strasbourg, France
- Université
de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux
de Strasbourg (IPCMS), UMR 7504, F-67000 Strasbourg, France
| | - Storm Hassell-Hart
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, U.K.
| | - Matthew C. Leech
- School
of Science, Department of Pharmaceutical Chemical and Environmental
Sciences, University of Greenwich, Central Avenue, Chatham Maritime ME4 4TB, U.K.
| | - Kevin Lam
- School
of Science, Department of Pharmaceutical Chemical and Environmental
Sciences, University of Greenwich, Central Avenue, Chatham Maritime ME4 4TB, U.K.
| | - Alaa Abdul-Sada
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, U.K.
| | - Graham J. Tizzard
- UK
National Crystallography Service, Chemistry, University of Southampton, Southampton SO1 71BJ, U.K.
| | - Simon J. Coles
- UK
National Crystallography Service, Chemistry, University of Southampton, Southampton SO1 71BJ, U.K.
| | - John Spencer
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, U.K.
| | - Alfredo Vargas
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, U.K.
| | - George E. Kostakis
- Department
of Chemistry, School of Life Sciences, University
of Sussex, Brighton BN1 9QJ, U.K.
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6
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Bunda S, May NV, Bonczidai-Kelemen D, Udvardy A, Ching HYV, Nys K, Samanipour M, Van Doorslaer S, Joó F, Lihi N. Copper(II) Complexes of Sulfonated Salan Ligands: Thermodynamic and Spectroscopic Features and Applications for Catalysis of the Henry Reaction. Inorg Chem 2021; 60:11259-11272. [PMID: 34251196 DOI: 10.1021/acs.inorgchem.1c01264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Copper(II) complexes formed with sulfonated salan ligands (HSS) have been synthesized, and their coordination chemistry has been characterized using pH-potentiometry and spectroscopic methods [UV-vis, electron paramagnetic resonance (EPR), and electron-electron double resonance (ELDOR)-detected NMR (EDNMR)] in aqueous solution. Several bridging moieties between the two salicylamine functions were introduced, e.g., ethyl (HSS), propyl (PrHSS), butyl (BuHSS), cyclohexyl (cis-CyHSS, trans-CyHSS), and diphenyl (dPhHSS). All of the investigated ligands feature excellent copper(II) binding ability via the formation of a (O-,N,N,O-) chelate system. The results indicated that the cyclohexyl moiety significantly enhances the stability of the copper(II) complexes. EPR studies revealed that the arrangement of the coordinated donor atoms is more symmetrical around the copper(II) center and similar for HSS, BuHSS, CyHSS, and dPhHSS, respectively, and a higher rhombicity of the g tensor was detected for PrHSS. The copper(II) complexes of the sulfosalan ligands were isolated in solid form also and showed moderate catalytic activity in the Henry (nitroaldol) reaction of aldehydes and nitromethane. The best yield for nitroaldol production was obtained for copper(II) complexes of PrHSS and BuHSS, although their metal binding ability is moderate compared to that of the cyclohexyl counterparts. However, these complexes possess larger spin density on the nitrogen nuclei than that for the other cases, which alters their catalytic activity.
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Affiliation(s)
- Szilvia Bunda
- Department of Physical Chemistry, University of Debrecen, Debrecen H-4032, Hungary.,Doctoral School of Chemistry, University of Debrecen, Debrecen H-4032, Hungary
| | - Nóra V May
- Centre for Structural Science, Research Centre for Natural Sciences, Budapest H-1519, Hungary
| | - Dóra Bonczidai-Kelemen
- Doctoral School of Chemistry, University of Debrecen, Debrecen H-4032, Hungary.,Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen H-4032, Hungary
| | - Antal Udvardy
- Department of Physical Chemistry, University of Debrecen, Debrecen H-4032, Hungary
| | - H Y Vincent Ching
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, Antwerpen B-2610, Belgium
| | - Kevin Nys
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, Antwerpen B-2610, Belgium
| | - Mohammad Samanipour
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, Antwerpen B-2610, Belgium
| | - Sabine Van Doorslaer
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, Antwerpen B-2610, Belgium
| | - Ferenc Joó
- Department of Physical Chemistry, University of Debrecen, Debrecen H-4032, Hungary.,MTA-DE Redox and Homogeneous Reaction Mechanisms Research Group, University of Debrecen, Debrecen H-4032, Hungary
| | - Norbert Lihi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen H-4032, Hungary.,MTA-DE Redox and Homogeneous Reaction Mechanisms Research Group, University of Debrecen, Debrecen H-4032, Hungary
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7
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Purgel M, Fehér PP, Balogh ÁK, Bunda S, Joó F. Water-mediated formation of hydride derivates from flexible Pd-salan complexes: A DFT study. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2020.111331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Sampani SI, Zdorichenko V, Danopoulou M, Leech MC, Lam K, Abdul-Sada A, Cox B, Tizzard GJ, Coles SJ, Tsipis A, Kostakis GE. Shedding light on the use of Cu(ii)-salen complexes in the A 3 coupling reaction. Dalton Trans 2020; 49:289-299. [PMID: 31750481 DOI: 10.1039/c9dt04146j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
One Cu(ii) complex, {Cu(ii)L} (1S), has been synthesised, in two high yielding steps under ambient conditions, and characterised by single-crystal X-Ray diffraction (SXRD), IR, UV-Vis, circular dichroism (CD), elemental analysis, thermogravimetric analysis (TGA) and electron spray ionization mass spectroscopy (ESI-MS). This air-stable compound enables the generation, at room temperature and in open-air, of twenty propargylamines, nine new, from secondary amines, aliphatic aldehydes and alkynes with a broad scope with yields up to 99%. Catalyst loadings can be as low as 1 mol%, while the recovered material retains its structural integrity and can be used up to 5 times without loss of its activity. Control experiments, SXRD, cyclic voltammetry and theoretical studies shed light on the mechanism revealing that the key to success is the use of phenoxido salen based ligands. These ligands orchestrate topological control permitting alkyne binding with concomitant activation of the C-H bond and simultaneously acting as a template temporarily accommodating the abstracted acetylenic proton, and continuously generating, via in situ formed radicals and a Single Electron Transfer (SET) mechanism, a transient Cu(i) active site to facilitate this transformation. The scope and limitations of this protocol are discussed and presented.
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Affiliation(s)
- Stavroula I Sampani
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, UK.
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9
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Roy S, Banerjee A, Lima S, Horn Jr A, Sampaio RMSN, Ribeiro N, Correia I, Avecilla F, Carvalho MFNN, Kuznetsov ML, Pessoa JC, Kaminsky W, Dinda R. Unusual chemistry of Cu(ii) salan complexes: synthesis, characterization and superoxide dismutase activity. NEW J CHEM 2020. [DOI: 10.1039/d0nj01892a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu(ii)-salan complexes: structural and spectral characterization, solvent assisted ring cleavage and correlation of superoxide dismutase activity with cyclic voltammetry data and steric effects.
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10
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Adão P, Teixeira CM, Carvalho MFN, Kuznetsov ML, Gomes CS, Pessoa JC. Cu(II) complexes derived from N-carboxymethyl and N-carboxyethyl amino acids as catalysts for asymmetric oxidative coupling of 2-naphthol. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Salan vs. salen metal complexes in catalysis and medicinal applications: Virtues and pitfalls. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.02.035] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Cheng Y, Cheng M, Hao J, Jia G, Li C. Fluorescence Spectroscopic Insight into the Supramolecular Interactions in DNA-Based Enantioselective Sulfoxidation. Chembiochem 2018; 19:2233-2240. [PMID: 30070000 DOI: 10.1002/cbic.201800393] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Indexed: 12/31/2022]
Abstract
Interactions of copper(II)-bipyridine cofactors and thioanisole substrate with human telomeric G-quadruplex DNA were studied by UV/Vis absorption, circular dichroism, and fluorescence quenching titration. Three copper(II)-bipyridine complexes are equivalently anchored to the G-quadruplex scaffold at all five fluorescently labeled sites. Thioanisole interacts with the DNA architecture at both the second loop and 3' terminus in the absence or presence of copper(II)-bipyridine complexes. These nonspecificities in the weak interactions of CuII complexes and thioanisole with G-quadruplex might explain why DNA only affords a modest enantioselectivity in the oxidation of thioanisole. These findings provide insights toward the construction of highly enantioselective DNA-based catalysts.
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Affiliation(s)
- Yu Cheng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China.,Department of Chemical Physics, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, P.R. China
| | - Mingpan Cheng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China.,Department of Chemical Physics, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, P.R. China
| | - Jingya Hao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China.,Department of Chemical Physics, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, P.R. China
| | - Guoqing Jia
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China
| | - Can Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China
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13
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Pratihar JL, Mandal P, Brandão P, Mal D, Felix V. Synthesis, characterization, spectral and catalytic activity of tetradentate (NNNO) azo-imine Schiff base copper(II) complexes. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Asymmetric Henry reaction catalyzed by chiral Cu(II) salalen and salan complexes derived from ( S )-proline. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Shao L, Chen Q, Qi C. Air Oxidation of Benzoin Catalyzed by Metal-Salen Complexes. KINETICS AND CATALYSIS 2018. [DOI: 10.1134/s002315841801010x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Han J, Soloshonok VA, Klika KD, Drabowicz J, Wzorek A. Chiral sulfoxides: advances in asymmetric synthesis and problems with the accurate determination of the stereochemical outcome. Chem Soc Rev 2017; 47:1307-1350. [PMID: 29271432 DOI: 10.1039/c6cs00703a] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Chiral sulfoxides are in extremely high demand in nearly every sector of the chemical industry concerned with the design and development of new synthetic reagents, drugs, and functional materials. The primary objective of this review is to update readers on the latest developments from the past five years (2011-2016) in the preparation of optically active sulfoxides. Methodologies covered include catalytic asymmetric sulfoxidation using either chemical, enzymatic, or hybrid biocatalytic means; kinetic resolution involving oxidation to sulfones, reduction to sulfides, modification of side chains, and imidation to sulfoximines; as well as various other methods including nucleophilic displacement at the sulfur atom for the desymmetrization of achiral sulfoxides, enantioselective recognition and separation based on either metal-organic frameworks (MOF's) or host-guest chemistry, and the Horner-Wadsworth-Emmons reaction. A second goal of this work concerns a critical discussion of the problem of the accurate determination of the stereochemical outcome of a reaction due to the self-disproportionation of enantiomers (SDE) phenomenon, particularly as it relates to chiral sulfoxides. The SDE is a little-appreciated phenomenon that can readily and spontaneously occur for scalemic samples when subjected to practically any physicochemical process. It has now been unequivocally demonstrated that ignorance in the SDE phenomenon inevitably leads to erroneous interpretation of the stereochemical outcome of catalytic enantioselective reactions, in particular, for the synthesis of chiral sulfoxides. It is hoped that this two-pronged approach to covering the chemistry of chiral sulfoxides will be appealing, engaging, and motivating for current research-active authors to respond to in their future publications in this exciting area of current research.
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Affiliation(s)
- Jianlin Han
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, 210093 Nanjing, China.
| | - Vadim A Soloshonok
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain. and IKERBASQUE, Basque Foundation for Science, Alameda Urquijo 36-5, Plaza Bizkaia, 48011 Bilbao, Spain
| | - Karel D Klika
- Molecular Structure Analysis, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, D-69009 Heidelberg, Germany.
| | - Józef Drabowicz
- Department of Heterooganic Chemistry, Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland and Institute of Chemistry, Environmental Protection and Biotechnology, Jan Długosz University in Częstochowa, Armii Krajowej 13/15, 42-201 Częstochowa, Poland
| | - Alicja Wzorek
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain. and Institute of Chemistry, Jan Kochanowski University in Kielce, Swiętokrzyska 15G, 25-406 Kielce, Poland.
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17
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Qin H, Jiang X, Huang H, Liu W, Li J, Xiao Y, Mao L, Fu Z, Yu N, Yin D. Ionic liquid-assisted catalytic oxidation of anethole by copper- and iron-based metal-organic frameworks. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Kelly N, Schnaars K, Gloe K, Doert T, Weigand JJ, Gloe K. New Heterodinuclear Zn/Ln (Ln = Gd, Tb, Er, Yb) Complexes of Hexadentate N,N′-Bis(3-alkoxy-2-hydroxybenzyl)cyclohexane-1,2-diamines: Synthesis and Structure. Aust J Chem 2017. [DOI: 10.1071/ch16716] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Two N,N′-bis(3-alkoxy-2-hydroxybenzyl)cyclohexane-1,2-diamine proligands, H2L1 (R = OCH3) and H2L2 (R = OC2H5), and five heterodinuclear ZnII/LnIII complexes, [Zn(L)(µ-CH3COO)Ln(NO3)2], containing [L1]2– and Gd3+, Tb3+, Er3+, or Yb3+ and [L2]2– and Yb3+ have been synthesised and structurally characterised. The complexes are isostructural and crystallise in the P21/n monoclinic space group. Zinc(ii) is coordinated by the inner N2O2 donor set of the ligand and an oxygen of the bridging acetate anion; the lanthanide(iii) ions possess an O9 coordination environment involving the interaction with the ligand’s outer O4 donor set, two bidentate nitrate ions, and the bridging acetate.
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19
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Catalytic oxidation of olefins and sulfides in the presence of hydrazone-oxidovanadium(V) complex containing VOCl2+ core. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.07.058] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Elkurtehi AI, Walsh AG, Dawe LN, Kerton FM. Vanadium Aminophenolate Complexes and Their Catalytic Activity in Aerobic and H2O2-Mediated Oxidation Reactions. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600068] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ali I. Elkurtehi
- Department of Chemistry; Memorial University of Newfoundland; St. John's A1B 3X7 NL Canada
| | - Andrew G. Walsh
- Department of Chemistry; Memorial University of Newfoundland; St. John's A1B 3X7 NL Canada
| | - Louise N. Dawe
- Department of Chemistry and Biochemistry; Wilfrid Laurier University; Waterloo ON Canada
| | - Francesca M. Kerton
- Department of Chemistry; Memorial University of Newfoundland; St. John's A1B 3X7 NL Canada
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21
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Chen HJ, Tseng MC, Hsu IJ, Chen WT, Han CC, Shyu SG. Ligand free copper(I)-catalyzed synthesis of diaryl ether with Cs2CO3 via a free radical path. Dalton Trans 2015; 44:12086-90. [PMID: 25825861 DOI: 10.1039/c5dt00151j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexes [Cu(I)(2,4-dimethylphenoxy)2](-) (A) and [Cu(II)(2,4-dimethylphenoxy)2(p-tolyl)](-) (B) were observed by in situ electrospray ionization mass spectrometry (ESI-MS) analysis of the ligand free copper(I)-catalyzed C-O coupling reaction using Cs2CO3 under the catalytic reaction conditions indicating that they could be intermediates in the reaction. The radical scavenger cumene retarded the reaction. Catalytic cycles involving a free radical path are proposed based on these observations.
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Affiliation(s)
- Hong-Jie Chen
- Institute of Chemistry, Academia Sinica, 128 Academia Road Sec. 2, Nankang, Taipei 115, Taiwan, Republic of China.
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22
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Grützke M, Zhao T, Immel TA, Huhn T. Heptacoordinate Heteroleptic Salan (ONNO) and Thiosalan (OSSO) Titanium(IV) Complexes: Investigation of Stability and Cytotoxicity. Inorg Chem 2015; 54:6697-706. [PMID: 26151574 DOI: 10.1021/acs.inorgchem.5b00690] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Seven heptacoordinate titanium(IV) complexes were synthesized based on the concept of hetero-bis-chelate stabilization of salan (ONNO) and thiosalan (OSSO) titanium(IV)alkoxides with 2,6-pyridinedicarboxylic acid (dipic) and derivatives thereof. The resulting compounds were investigated in a solid by X-ray diffraction and in solution by NMR spectroscopy. A thiosalan (OSSO) titanium(IV) complex could be isolated and its conformational stabilization by dipic was shown by (1)H NMR spectroscopy to lead to nonfluxional behavior even at room temperature. The stability of selected complexes was assessed at pH 1.9, 6.8, and 12.1 by an UV-vis monitored hydrolysis study with >5 Mio. equivalents of water. Even at pH 12.1 [L(1)Ti(dipic)(1)] showed t1/2 of more than 2 days. The cytotoxicity of all compounds was investigated in two human carcinoma cell lines. IC50-values in the range of cisplatin were achieved by all tested compounds except for [L(4)Ti(dipic)(1)], which was proven to be nontoxic. The functionalization of dipic was thus well tolerated and did neither interfere with the stability nor the cytotoxicity of the heteroleptic complexes.
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Affiliation(s)
- Martin Grützke
- Fachbereich Chemie and Konstanz Research School Chemical Biology, Universität Konstanz, Universitätsstr. 10, D-78457 Konstanz, Germany
| | - Tiankun Zhao
- Fachbereich Chemie and Konstanz Research School Chemical Biology, Universität Konstanz, Universitätsstr. 10, D-78457 Konstanz, Germany
| | - Timo A Immel
- Fachbereich Chemie and Konstanz Research School Chemical Biology, Universität Konstanz, Universitätsstr. 10, D-78457 Konstanz, Germany
| | - Thomas Huhn
- Fachbereich Chemie and Konstanz Research School Chemical Biology, Universität Konstanz, Universitätsstr. 10, D-78457 Konstanz, Germany
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23
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Thirty years through vanadium chemistry. J Inorg Biochem 2015; 147:4-24. [PMID: 25843361 DOI: 10.1016/j.jinorgbio.2015.03.004] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/12/2015] [Accepted: 03/13/2015] [Indexed: 11/23/2022]
Abstract
The relevance of vanadium in biological systems is known for many years and vanadium-based catalysts have important industrial applications, however, till the beginning of the 80s research on vanadium chemistry and biochemistry did not receive much attention from the scientific community. The understanding of the broad bioinorganic implications resulting from the similarities between phosphate and vanadate(V) and the discovery of vanadium dependent enzymes gave rise to an enormous increase in interest in the chemistry and biological relevance of vanadium. Thereupon the last 30years corresponded to a period of enormous research effort in these fields, as well as in medicinal applications of vanadium and in the development of catalysts for use in fine-chemical synthesis, some of these inspired by enzymatic active sites. Since the 80s my group in collaboration with others made contributions, described throughout this text, namely in the understanding of the speciation of vanadium compounds in aqueous solution and in biological fluids, and to the transport of vanadium compounds in blood plasma and their uptake by cells. Several new types of vanadium compounds were also synthesized and characterized, with applications either as prospective therapeutic drugs or as homogeneous or heterogenized catalysts for the production of fine chemicals. The developments made are described also considering the international context of the evolution of the knowledge in the chemistry and bioinorganic chemistry of vanadium compounds during the last 30years. This article was compiled based on the Vanadis Award presentation at the 9th International Vanadium Symposium.
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24
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Syntheses, structures and catalytic activities of dinuclear copper complexes with tetradentate diaminebis (phenolate) ligands. TRANSIT METAL CHEM 2015. [DOI: 10.1007/s11243-015-9913-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Roseiro APS, Adão P, Galvão AM, Costa Pessoa J, Botelho do Rego AM, Carvalho MFNN. Oxygen activation by copper camphor complexes. Inorg Chem Front 2015. [DOI: 10.1039/c5qi00064e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In situreduction of CuCl2enables formation of Cu(i) complexes prone to activate molecular oxygen from air towards catalytic oxidation of 1,3-dicarbonyls.
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Affiliation(s)
- Alexandra P. S. Roseiro
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Pedro Adão
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Adelino M. Galvão
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - João Costa Pessoa
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Ana M. Botelho do Rego
- Centro de Química-Física Molecular (CQFM) and Institute of Nanoscience and Nanotechnology (IN)
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
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26
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Adão P, Barroso S, Carvalho MFNN, Teixeira CM, Kuznetsov ML, Costa Pessoa J. Amino acid derived CuII compounds as catalysts for asymmetric oxidative coupling of 2-naphthol. Dalton Trans 2015; 44:1612-26. [DOI: 10.1039/c4dt02731k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several chiral amino acid-derived CuII complexes were prepared and used as catalysts in the aerobic oxidative coupling of 2-naphthol. Moderate homocoupling product yields and enantiomeric excesses were obtained under mild, aqueous conditions.
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Affiliation(s)
- Pedro Adão
- Centro Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Sónia Barroso
- Centro Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | | | - Carlos M. Teixeira
- Centro Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Maxim L. Kuznetsov
- Centro Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - João Costa Pessoa
- Centro Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
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27
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Chen HJ, Hsu IJ, Tseng MC, Shyu SG. Possible intermediates of Cu(phen)-catalyzed C-O cross-coupling of phenol with an aryl bromide by in situ ESI-MS and EPR studies. Dalton Trans 2014; 43:11410-7. [PMID: 24935814 DOI: 10.1039/c4dt00582a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The C-O coupling reaction between 2,4-dimethylphenol and 4-bromotoluene catalyzed by the CuI/K2CO3/phen system can be inhibited by the radical scavenger cumene. Complexes [Cu(i)(phen)(1-(2,4-dimethylphenoxy)-4-methylbenzene)](+) (denoted as A), {H[Cu(i)(phen)(2,4-dimethylphenoxy)]}(+) and [Cu(i)(2,4-dimethylphenoxy)2](-) (denoted as B) were observed by in situ electrospray ionization mass spectrometry (ESI-MS) analysis of the copper(i)-catalyzed C-O coupling reaction under the catalytic reaction conditions indicating that they could be intermediates in the reaction. The in situ EPR study of the reaction solution detected the Cu(ii) species with a fitted g value of 2.188. A catalytic cycle with a single electron transfer (SET) step was proposed based on these observations.
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Affiliation(s)
- Hong-Jie Chen
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Republic of China.
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