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Nemoto Y, Ozawa K, Mori JF, Kanaly RA. Nondesulfurizing benzothiophene biotransformation to hetero and homodimeric ortho-substituted diaryl disulfides by the model PAH-degrading Sphingobium barthaii. Biodegradation 2023; 34:215-233. [PMID: 36808269 DOI: 10.1007/s10532-023-10014-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 02/06/2023] [Indexed: 02/21/2023]
Abstract
Understanding the biotransformation mechanisms of toxic sulfur-containing polycyclic aromatic hydrocarbon (PASH) pollutants such as benzothiophene (BT) is useful for predicting their environmental fates. In the natural environment, nondesulfurizing hydrocarbon-degrading bacteria are major active contributors to PASH biodegradation at petroleum-contaminated sites; however, BT biotransformation pathways by this group of bacteria are less explored when compared to desulfurizing organisms. When a model nondesulfurizing polycyclic aromatic hydrocarbon-degrading soil bacterium, Sphingobium barthaii KK22, was investigated for its ability to cometabolically biotransform BT by quantitative and qualitative methods, BT was depleted from culture media but was biotransformed into mostly high molar mass (HMM) hetero and homodimeric ortho-substituted diaryl disulfides (diaryl disulfanes). HMM diaryl disulfides have not been reported as biotransformation products of BT. Chemical structures were proposed for the diaryl disulfides by comprehensive mass spectrometry analyses of the chromatographically separated products and were supported by the identification of transient upstream BT biotransformation products, which included benzenethiols. Thiophenic acid products were also identified, and pathways that described BT biotransformation and novel HMM diaryl disulfide formation were constructed. This work shows that nondesulfurizing hydrocarbon-degrading organisms produce HMM diaryl disulfides from low molar mass polyaromatic sulfur heterocycles, and this may be taken into consideration when predicting the environmental fates of BT pollutants.
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Affiliation(s)
- Yuki Nemoto
- Department of Life and Environmental System Science, Graduate School of Nanobiosciences, Yokohama City University, 22-2 Seto, Kanazawa, Yokohama, Kanagawa, 236-0027, Japan
| | - Kohei Ozawa
- Department of Life and Environmental System Science, Graduate School of Nanobiosciences, Yokohama City University, 22-2 Seto, Kanazawa, Yokohama, Kanagawa, 236-0027, Japan
| | - Jiro F Mori
- Department of Life and Environmental System Science, Graduate School of Nanobiosciences, Yokohama City University, 22-2 Seto, Kanazawa, Yokohama, Kanagawa, 236-0027, Japan
| | - Robert A Kanaly
- Department of Life and Environmental System Science, Graduate School of Nanobiosciences, Yokohama City University, 22-2 Seto, Kanazawa, Yokohama, Kanagawa, 236-0027, Japan.
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2
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Bors I, Purgel M, Fehér PP, Varga T, Speier G, Korecz L, Kaizer J. Unexpected radical mechanism in a [4+1] cycloaddition reaction. NEW J CHEM 2021. [DOI: 10.1039/d1nj00660f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism of the cheletropic reaction of monoimines with PPh3via unexpected radical intermediates resulting in oxazaphospholes has been discussed based on EPR, UV-vis and DFT calculations.
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Affiliation(s)
- István Bors
- Research Group of Bioorganic and Biocoordination Chemistry
- University of Pannonia
- Veszprém H-8200
- Hungary
| | - Mihály Purgel
- Department of Physical Chemistry
- University of Debrecen
- Debrecen H-4032
- Hungary
| | - Péter Pál Fehér
- Institute of Organic Chemistry
- Research Centre for Natural Sciences
- Budapest H-1117
- Hungary
| | - Tamás Varga
- Department of Process Engineering
- University of Pannonia
- Veszprém H-8200
- Hungary
| | - Gábor Speier
- Research Group of Bioorganic and Biocoordination Chemistry
- University of Pannonia
- Veszprém H-8200
- Hungary
| | - László Korecz
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Budapest H-1117
- Hungary
| | - József Kaizer
- Research Group of Bioorganic and Biocoordination Chemistry
- University of Pannonia
- Veszprém H-8200
- Hungary
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Dief EM, Vogel YB, Peiris CR, Le Brun AP, Gonçales VR, Ciampi S, Reimers JR, Darwish N. Covalent Linkages of Molecules and Proteins to Si-H Surfaces Formed by Disulfide Reduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:14999-15009. [PMID: 33271017 DOI: 10.1021/acs.langmuir.0c02391] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Thiols and disulfide contacts have been, for decades, key for connecting organic molecules to surfaces and nanoclusters as they form self-assembled monolayers (SAMs) on metals such as gold (Au) under mild conditions. In contrast, they have not been similarly deployed on Si owing to the harsh conditions required for monolayer formation. Here, we show that SAMs can be simply formed by dipping Si-H surfaces into dilute solutions of organic molecules or proteins comprising disulfide bonds. We demonstrate that S-S bonds can be spontaneously reduced on Si-H, forming covalent Si-S bonds in the presence of traces of water, and that this grafting can be catalyzed by electrochemical potential. Cyclic disulfide can be spontaneously reduced to form complete monolayers in 1 h, and the reduction can be catalyzed electrochemically to form full surface coverages within 15 min. In contrast, the kinetics of SAM formation of the cyclic disulfide molecule on Au was found to be three-fold slower than that on Si. It is also demonstrated that dilute thiol solutions can form monolayers on Si-H following oxidation to disulfides under ambient conditions; the supply of too much oxygen, however, inhibits SAM formation. The electron transfer kinetics of the Si-S-enabled SAMs on Si-H is comparable to that on Au, suggesting that Si-S contacts are electrically transmissive. We further demonstrate the prospect of this spontaneous disulfide reduction by forming a monolayer of protein azurin on a Si-H surface within 1 h. The direct reduction of disulfides on Si electrodes presents new capabilities for a range of fields, including molecular electronics, for which highly conducting SAM-electrode contacts are necessary and for emerging fields such as biomolecular electronics as disulfide linkages could be exploited to wire proteins between Si electrodes, within the context of the current Si-based technologies.
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Affiliation(s)
- Essam M Dief
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| | - Yan B Vogel
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| | - Chandramalika R Peiris
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| | - Anton P Le Brun
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organization (ANSTO), Lucas Heights, New South Wales 2234, Australia
| | - Vinicius R Gonçales
- School of Chemistry, Australia Centre for NanoMedicine, ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Simone Ciampi
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
| | - Jeffrey R Reimers
- International Centre for Quantum and Molecular Structures, School of Physics, Shanghai University, Shanghai 200444, China
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
| | - Nadim Darwish
- School of Molecular and Life Sciences, Curtin Institute of Functional Molecules and Interfaces, Curtin University, Bentley, Western Australia 6102, Australia
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4
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Cu doped MnO2/γ-Al2O3: a facile and efficient catalyst for the degradation of Na2S in waste water under ambient conditions. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-020-01755-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Abbasi M, Nowrouzi N, Mousavi S. Aerobic Oxidation of Thiols and In Situ Generated Thiols to Symmetrical Disulfides (Disulfanes) Catalyzed by Na
2
S
4
O
6. ChemistrySelect 2019. [DOI: 10.1002/slct.201903099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mohammad Abbasi
- Department of ChemistryFaculty of SciencesPersian Gulf University Bushehr 75169 Iran
| | - Najmeh Nowrouzi
- Department of ChemistryFaculty of SciencesPersian Gulf University Bushehr 75169 Iran
| | - Saadat Mousavi
- Department of ChemistryFaculty of SciencesPersian Gulf University Bushehr 75169 Iran
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Shariati M, Imanzadeh G, Rostami A, Ghoreishy N, Kheirjou S. Application of laccase/DDQ as a new bioinspired catalyst system for the aerobic oxidation of tetrahydroquinazolines and Hantzsch 1,4-dihydropyridines. CR CHIM 2019. [DOI: 10.1016/j.crci.2019.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Vijaya Sundar J, Kamaraj M, Subramanian V. Probing the effect of different graphitic nitrogen sites on the aerobic oxidation of thiols to disulfides: a DFT study. Phys Chem Chem Phys 2018; 20:2057-2065. [PMID: 29300059 DOI: 10.1039/c7cp05924h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functionalized graphene materials are well known for their application in catalyzing the aerobic oxidation of alcohols, hydrocarbons, etc. in an aqueous medium. Despite the fact that a few catalysts are known to oxidize thiols to disulfides, their selectivity is poor and requires oxidants that are not suitable in terms of the principles of green chemistry. Therefore, in this context, an attempt has been made to investigate the possibility of utilizing nitrogen doped graphene for the aerobic oxidation of thiols to disulfides using density functional theory (DFT). Our previous study (V. S. Jeyaraj, M. Kamaraj and V. Subramanian, J. Phys. Chem. C, 2015, 119, 26438-26450) has shed light on the activation of dioxygen to form activated oxygen species (AOS) at different graphitic nitrogen sites. Hence the same has been used to study the two-electron oxidation of thiophenol and methanethiol. The AOS are of three kinds: (1) peroxide type at the edges, (2) superoxide type at the center and (3) ketonic type at edges. The findings from this study indicate that the peroxide type AOS leads to selective formation of diphenyl disulfide, whereas the superoxide type at the center facilitates the formation of hydrogen peroxide which could lead to over-oxidation of disulfide. The oxidation of aromatic thiols (thiophenol) by the ketonic type of AOS is nearly a barrier-less reaction (0.67 kcal mol-1). Similarly, AOS at the edges with the peroxide form can oxidize aliphatic thiols (methanethiol) with a less barrier of 1.55 kcal mol-1, which can be a spontaneous reaction. The mechanism of oxidation is completely different from the oxidative pathway of alcohols by the same AOS. The formation of S-OH species is strictly avoided by the strong stabilization of thiyl radicals over the π-surface of graphene.
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Affiliation(s)
- J Vijaya Sundar
- Chemical Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai 600 020, India.
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Ferreri C, Golding BT, Jahn U, Ravanat JL. COST Action CM1201 "Biomimetic Radical Chemistry": free radical chemistry successfully meets many disciplines. Free Radic Res 2016; 50:S112-S128. [PMID: 27750460 DOI: 10.1080/10715762.2016.1248961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The COST Action CM1201 "Biomimetic Radical Chemistry" has been active since December 2012 for 4 years, developing research topics organized into four working groups: WG1 - Radical Enzymes, WG2 - Models of DNA damage and consequences, WG3 - Membrane stress, signalling and defenses, and WG4 - Bio-inspired synthetic strategies. International collaborations have been established among the participating 80 research groups with brilliant interdisciplinary achievements. Free radical research with a biomimetic approach has been realized in the COST Action and are summarized in this overview by the four WG leaders.
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Affiliation(s)
- Carla Ferreri
- a ISOF, Consiglio Nazionale delle Ricerche, BioFreeRadicals Group , Bologna , Italy
| | - Bernard T Golding
- b School of Chemistry, Bedson Building, Newcastle University , Newcastle-upon-Tyne , UK
| | - Ullrich Jahn
- c Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Prague , Czech Republic
| | - Jean-Luc Ravanat
- d INAC-SCIB & CEA, INAC-SyMMES Laboratoire des Lésions des Acides Nucléiques , Université Grenoble Alpes , Grenoble , France
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Gantman MG, Tarkhanova IG, Kolyagin YG. Non-innocent ligands in copper complexes catalyzed oxidation of thiols. J Sulphur Chem 2016. [DOI: 10.1080/17415993.2016.1193179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Mikhail G. Gantman
- Chemical Department, M.V. Lomonosov Moscow State University, Moscow, Russia
- Institute of Chemical Engineering, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | | | - Yuri G. Kolyagin
- Chemical Department, M.V. Lomonosov Moscow State University, Moscow, Russia
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Yamaguchi T, Sakairi K, Yamaguchi E, Tada N, Itoh A. Magnesium iodide-catalyzed synthesis of 2-substituted quinazolines using molecular oxygen and visible light. RSC Adv 2016. [DOI: 10.1039/c6ra04073j] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We disclose a novel and efficient synthesis of 2-substituted quinazolines by aerobic photooxidative reaction catalyzed by magnesium iodide.
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Affiliation(s)
- T. Yamaguchi
- Gifu Pharmaceutical University
- Gifu 501-1196
- Japan
| | - K. Sakairi
- Gifu Pharmaceutical University
- Gifu 501-1196
- Japan
| | - E. Yamaguchi
- Gifu Pharmaceutical University
- Gifu 501-1196
- Japan
| | - N. Tada
- Gifu Pharmaceutical University
- Gifu 501-1196
- Japan
| | - A. Itoh
- Gifu Pharmaceutical University
- Gifu 501-1196
- Japan
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Varga E, Mika LT, Csámpai A, Holczbauer T, Kardos G, Soós T. Mechanistic investigations of a bifunctional squaramide organocatalyst in asymmetric Michael reaction and observation of stereoselective retro-Michael reaction. RSC Adv 2015. [DOI: 10.1039/c5ra19593d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The mechanism of cinchona–squaramide organocatalytic Michael addition was studied usingin situIR and NMR experiments. As a result, not only kinetic parameters were determined but a stereoselective retro-Michael reaction was also observed.
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Affiliation(s)
- Eszter Varga
- Institute of Organic Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- Budapest
- Hungary
| | - László Tamás Mika
- Budapest University of Technology and Economics
- Faculty of Chemical Technology and Biotechnology
- Department of Chemical and Environmental Process Engineering
- Budapest
- Hungary
| | - Antal Csámpai
- Institute of Chemistry
- Eötvös Loránd University
- Budapest
- Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- Budapest
- Hungary
| | - György Kardos
- Institute of Organic Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- Budapest
- Hungary
| | - Tibor Soós
- Institute of Organic Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- Budapest
- Hungary
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