1
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Kechiche A, Al Shehimy S, Khrouz L, Monnereau C, Bucher C, Parola S, Bessmertnykh-Lemeune A, Rousselin Y, Cheprakov AV, Nasri H. Phosphonate-substituted porphyrins as efficient, cost-effective and reusable photocatalysts. Dalton Trans 2024; 53:7498-7516. [PMID: 38596893 DOI: 10.1039/d4dt00418c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Recent advances in visible light photocatalysis represent a significant stride towards sustainable catalytic chemistry. However, its successful implementation in fine chemical production remains challenging and requires careful optimization of available photocatalysts. Our work aims to structurally modify bioinspired porphyrin catalysts, addressing issues related to their laborious synthesis and low solubility, with the goal of increasing their efficiency and developing reusable catalytic systems. We have demonstrated the catalytic potential of readily available meso-tetrakis[4-(diethoxyphosphoryl)phenyl]porphyrins (M(TPPP)). Novel metal (Pd(II), Co(II) and In(III)) complexes with this ligand were prepared in good yields. These chromophores were characterized in solution using spectroscopic (NMR, UV-vis, fluorescence) and electrochemical methods. The introduction of phosphonate groups on the phenyl substituents of meso-tetraphenylporphyrins (M(TPP)) improves solubility in polar organic solvents without significantly altering the photophysical properties and photostability of complexes. This structural modification also leads to easier reductions and harder oxidations of the macrocycle for all investigated complexes compared to the corresponding TPP derivatives. The free base porphyrin, zinc(II), palladium(II), and indium(III) complexes were studied as photocatalysts for oxidation of sulfides to sulfoxides using molecular oxygen as a terminal oxidant. Both dialkyl and alkyl aryl sulfides were quantitatively transformed into sulfoxides under blue LED irradiation in the acetonitrile-water mixture (10 : 1 v/v) with a low loading (0.005-0.05 mol%) of porphyrin photocatalysts, where H2(TPPP) and Pd(TPPP) were found to be the most efficient. The reaction mechanism was studied using photoluminescence and EPR spectroscopies. Then, to access reusable catalysts, water-soluble derivatives bearing phosphonic acid groups, H2(TPPP-A) and Pd(TPPP-A), were prepared in high yields. These compounds were characterized using spectroscopic methods. Single-crystal X-ray diffraction analysis of Pd(TPPP-A) reveals that the complex forms a 3D hydrogen-bonded organic framework (HOF) in the solid state. Both H2(TPPP-A) and Pd(TPPP-A) were found to catalyze the photooxidation of sulfides by molecular oxygen in the acetonitrile-water mixture (1 : 1 v/v), while only Pd(TPPP-A) resulted in selective production of sulfoxides. The complex Pd(TPPP-A) was easily recovered through extraction in the aqueous phase and successfully reused in five consecutive cycles of the sulfoxidation reaction.
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Affiliation(s)
- Azhar Kechiche
- ENS de Lyon, UMR 5182, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie, École Normale Supérieure de Lyon, 46 allée d'Italie, 69342 Lyon, France.
| | - Shaymaa Al Shehimy
- ENS de Lyon, UMR 5182, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie, École Normale Supérieure de Lyon, 46 allée d'Italie, 69342 Lyon, France.
| | - Lhoussain Khrouz
- ENS de Lyon, UMR 5182, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie, École Normale Supérieure de Lyon, 46 allée d'Italie, 69342 Lyon, France.
| | - Cyrille Monnereau
- ENS de Lyon, UMR 5182, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie, École Normale Supérieure de Lyon, 46 allée d'Italie, 69342 Lyon, France.
| | - Christophe Bucher
- ENS de Lyon, UMR 5182, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie, École Normale Supérieure de Lyon, 46 allée d'Italie, 69342 Lyon, France.
| | - Stephane Parola
- ENS de Lyon, UMR 5182, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie, École Normale Supérieure de Lyon, 46 allée d'Italie, 69342 Lyon, France.
| | - Alla Bessmertnykh-Lemeune
- ENS de Lyon, UMR 5182, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie, École Normale Supérieure de Lyon, 46 allée d'Italie, 69342 Lyon, France.
| | - Yoann Rousselin
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR CNRS 6302, Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, 21078 Dijon, France
| | - Andrey V Cheprakov
- Lomonosov Moscow State University, Department of Chemistry, 1-3, Leninskie Gory, Moscow, 119991, Russia
| | - Habib Nasri
- University of Monastir, Laboratory of Physical Chemistry of Materials (LR01ES19), Faculty of Sciences of Monastir, Avenue of the Environment, 5019 Monastir, Tunisia
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2
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Gendron T, Lanfranchi DA, Wenzel NI, Kessedjian H, Jannack B, Maes L, Cojean S, Müller TJJ, Loiseau PM, Davioud-Charvet E. Chemoselective Synthesis and Anti-Kinetoplastidal Properties of 2,6-Diaryl-4 H-tetrahydro-thiopyran-4-one S-Oxides: Their Interplay in a Cascade of Redox Reactions from Diarylideneacetones. Molecules 2024; 29:1620. [PMID: 38611899 PMCID: PMC11013284 DOI: 10.3390/molecules29071620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/26/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024] Open
Abstract
2,6-Diaryl-4H-tetrahydro-thiopyran-4-ones and corresponding sulfoxide and sulfone derivatives were designed to lower the major toxicity of their parent anti-kinetoplatidal diarylideneacetones through a prodrug effect. Novel diastereoselective methodologies were developed and generalized from diarylideneacetones and 2,6-diaryl-4H-tetrahydro-thiopyran-4-ones to allow the introduction of a wide substitution profile and to prepare the related S-oxides. The in vitro biological activity and selectivity of diarylideneacetones, 2,6-diaryl-4H-tetrahydro-thiopyran-4-ones, and their S-sulfoxide and sulfone metabolites were evaluated against Trypanosoma brucei brucei, Trypanosoma cruzi, and various Leishmania species in comparison with their cytotoxicity against human fibroblasts hMRC-5. The data revealed that the sulfides, sulfoxides, and sulfones, in which the Michael acceptor sites are temporarily masked, are less toxic against mammal cells while the anti-trypanosomal potency was maintained against T. b. brucei, T. cruzi, L. infantum, and L. donovani, thus confirming the validity of the prodrug strategy. The mechanism of action is proposed to be due to the involvement of diarylideneacetones in cascades of redox reactions involving the trypanothione system. After Michael addition of the dithiol to the double bonds, resulting in an elongated polymer, the latter-upon S-oxidation, followed by syn-eliminations-fragments, under continuous release of reactive oxygen species and sulfenic/sulfonic species, causing the death of the trypanosomal parasites in the micromolar or submicromolar range with high selectivity indexes.
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Affiliation(s)
- Thibault Gendron
- UMR7042 Université de Strasbourg–CNRS–UHA, Laboratoire d’Innovation Moléculaire et Applications (LIMA), Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France; (T.G.); (D.A.L.); (H.K.)
| | - Don Antoine Lanfranchi
- UMR7042 Université de Strasbourg–CNRS–UHA, Laboratoire d’Innovation Moléculaire et Applications (LIMA), Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France; (T.G.); (D.A.L.); (H.K.)
| | - Nicole I. Wenzel
- Bioorganic & Medicinal Chemistry Laboratory, Biochemie-Zentrum, Heidelberg University, Im Neuenheimer Feld 504, D-69120 Heidelberg, Germany; (N.I.W.)
| | - Hripsimée Kessedjian
- UMR7042 Université de Strasbourg–CNRS–UHA, Laboratoire d’Innovation Moléculaire et Applications (LIMA), Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France; (T.G.); (D.A.L.); (H.K.)
| | - Beate Jannack
- Bioorganic & Medicinal Chemistry Laboratory, Biochemie-Zentrum, Heidelberg University, Im Neuenheimer Feld 504, D-69120 Heidelberg, Germany; (N.I.W.)
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium;
| | - Sandrine Cojean
- Antiparasitic Chemotherapy, Faculty of Pharmacy, BioCIS, UMR 8076 Université Paris-Saclay-CNRS 17, Rue des Sciences, F-91400 Orsay, France; (S.C.); (P.M.L.)
| | - Thomas J. J. Müller
- Institut für Organische Chemie und Makromolekulare Chemie, Mathematisch-Naturwissenschaftliche FakultätFakultät, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225 Düsseldorf, Germany;
| | - Philippe M. Loiseau
- Antiparasitic Chemotherapy, Faculty of Pharmacy, BioCIS, UMR 8076 Université Paris-Saclay-CNRS 17, Rue des Sciences, F-91400 Orsay, France; (S.C.); (P.M.L.)
| | - Elisabeth Davioud-Charvet
- UMR7042 Université de Strasbourg–CNRS–UHA, Laboratoire d’Innovation Moléculaire et Applications (LIMA), Team Bio(IN)organic and Medicinal Chemistry, European School of Chemistry, Polymers and Materials (ECPM), 25 Rue Becquerel, F-67087 Strasbourg, France; (T.G.); (D.A.L.); (H.K.)
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3
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Mohrhardt B, Barrios B, Kibler R, King W, Doskey PV, Minakata D. Elucidation of the Photochemical Fate of Methionine in the Presence of Surrogate and Standard Dissolved Organic Matter under Sunlight Irradiation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:14363-14372. [PMID: 37715305 DOI: 10.1021/acs.est.3c04176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/17/2023]
Abstract
The abiotic fate of dissolved free amino acids considerably contributes to the cycling of dissolved sulfur and nitrogen in natural aquatic environments. However, the roles of the functional groups of chromophoric dissolved organic matter (CDOM) and the fate of free amino acids under sunlight irradiation in fresh waters are not fully understood. This study aims to elucidate the fate of photolabile methionine in the presence of three CDOM surrogate compounds, i.e., 1,4-naphthoquinone, 2-naphthaldehyde, and umbelliferone, and two standard CDOM by coupling experimental measurement, quantum chemical computations, and kinetic modeling. Results indicate that excited triplet-state CDOM and hydroxyl radicals are able to cleave the C-S bond in methionine, resulting in the formation of smaller amino acids and volatile sulfur-containing compounds. Singlet oxygen forms methionine sulfoxide and methionine sulfone. The distribution of phototransformation products offers an improved understanding of the fate of nitrogen- and sulfur-containing compounds and their uptake by microorganisms in natural aquatic environments.
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Affiliation(s)
- Benjamin Mohrhardt
- Department of Civil, Environmental and Geospatial Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931, United States
| | - Benjamin Barrios
- Department of Civil, Environmental and Geospatial Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931, United States
| | - Ryan Kibler
- Department of Civil, Environmental and Geospatial Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931, United States
| | - Wynter King
- Department of Civil, Environmental and Geospatial Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931, United States
| | - Paul V Doskey
- College of Forest Resources and Environmental Science, Michigan Technological, 1400 Townsend Drive, Houghton, Michigan 49931, United States University
| | - Daisuke Minakata
- Department of Civil, Environmental and Geospatial Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, Michigan 49931, United States
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4
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Luo H, Tian S, Liang H, Wang H, Gao S, Dai W. Oxidative cleavage and ammoxidation of organosulfur compounds via synergistic Co-Nx sites and Co nanoparticles catalysis. Nat Commun 2023; 14:2981. [PMID: 37221164 DOI: 10.1038/s41467-023-38614-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 05/10/2023] [Indexed: 05/25/2023] Open
Abstract
The cleavage and functionalization of C-S bonds have become a rapidly growing field for the design or discovery of new transformations. However, it is usually difficult to achieve in a direct and selective fashion due to the intrinsic inertness and catalyst-poisonous character. Herein, for the first time, we report a novel and efficient protocol that enables direct oxidative cleavage and cyanation of organosulfur compounds by heterogeneous nonprecious-metal Co-N-C catalyst comprising graphene encapsulated Co nanoparticles and Co-Nx sites using oxygen as environmentally benign oxidant and ammonia as nitrogen source. A wide variety of thiols, sulfides, sulfoxides, sulfones, sulfonamides, and sulfonyl chlorides are viable in this reaction, enabling access to diverse nitriles under cyanide-free conditions. Moreover, modifying the reaction conditions also allows for the cleavage and amidation of organosulfur compounds to deliver amides. This protocol features excellent functional group tolerance, facile scalability, cost-effective and recyclable catalyst, and broad substrate scope. Characterization and mechanistic studies reveal that the remarkable effectiveness of the synergistic catalysis of Co nanoparticles and Co-Nx sites is crucial for achieving outstanding catalytic performance.
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Affiliation(s)
- Huihui Luo
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- University of Chinese Academy of Sciences, Beijing, PR China
| | - Shuainan Tian
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun, PR China
| | - Hongliang Liang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
| | - He Wang
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun, PR China.
| | - Shuang Gao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
| | - Wen Dai
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China.
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5
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Joshi A, Iqbal Z, Kandwal P, De SR. Pd(II)–Catalyzed Non–Directed Benzylic C(sp3)–H Activation: Cascade C(sp3)–S Bond Cleavage to Access Benzaldehydes from Benzylphenyl Sulfides and Sulfoxides. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Asha Joshi
- NIT Uttarakhand: National Institute of Technology Uttarakhand Department of Chemistry Srinagar INDIA
| | - Zafar Iqbal
- NIT Uttarakhand: National Institute of Technology Uttarakhand Department of Chemistry Srinagar INDIA
| | - Pankaj Kandwal
- NIT Uttarakhand: National Institute of Technology Uttarakhand Department of Chemistry Srinagar INDIA
| | - Saroj Ranjan De
- National Institute of Technology Uttarakhand Dept. of Chemistry Srinagar Garhwal 246174 Srinagar INDIA
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6
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Hong B, Lee A. Visible-light-mediated oxidative C–S bond cleavage of benzyl thiols through in situ activation strategy. Org Biomol Chem 2022; 20:5938-5942. [DOI: 10.1039/d2ob00089j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel method for the oxidative C–S bond cleavage of benzyl thiols was developed. In situ-activated silver species enabled the controlled bond cleavage of benzyl thiols to afford aldehydes and...
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7
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Zhang Z, Wang X, Sivaguru P, Wang Z. Exploring the synthetic application of sulfinyl radicals. Org Chem Front 2022. [DOI: 10.1039/d2qo01403c] [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
This review summarized the applications of sulfinyl radicals in organic chemistry and thoroughly examined the challenges and future development trends of sulfinyl radicals in modern organic chemistry, as well as their structures and properties.
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Affiliation(s)
- Zixu Zhang
- College of Chemistry and Environmental Science, Hebei University, Baoding, China
| | - Xinru Wang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, China
| | - Paramasivam Sivaguru
- Department of Research and Innovation, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
| | - Zikun Wang
- College of Chemistry and Environmental Science, Hebei University, Baoding, China
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8
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Lapi A, D'Alfonso C, Del Giacco T, Lanzalunga O. Competition Between C α -S and C α -C β Bond Cleavage in β-Hydroxysulfoxides Cation Radicals Generated by Photoinduced Electron Transfer †. Photochem Photobiol 2021; 97:1310-1321. [PMID: 33998681 PMCID: PMC9290654 DOI: 10.1111/php.13455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/03/2021] [Accepted: 05/11/2021] [Indexed: 11/28/2022]
Abstract
A kinetic and product study of the 3‐cyano‐N‐methyl‐quinolinium photoinduced monoelectronic oxidation of a series of β‐hydroxysulfoxides has been carried out to investigate the competition between Cα‐S and Cα‐Cβ bond cleavage within the corresponding cation radicals. Laser flash photolysis experiments unequivocally established the formation of sulfoxide cation radicals showing their absorption band (λmax ≈ 520 nm) and that of 3‐CN‐NMQ• (λmax ≈ 390 nm). Steady‐state photolysis experiments suggest that, in contrast to what previously observed for alkyl phenyl sulfoxide cation radicals that exclusively undergo Cα‐S bond cleavage, the presence of a β‐hydroxy group makes, in some cases, the Cα‐Cβ scission competitive. The factors governing this competition seem to depend on the relative stability of the fragments formed from the two bond scissions. Substitution of the β‐OH group with ‐OMe did not dramatically change the reactivity pattern of the cation radicals thus suggesting that the observed favorable effect of the hydroxy group on the Cα‐Cβ bond cleavage mainly resides on its capability to stabilize the carbocation formed upon this scission.
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Affiliation(s)
- Andrea Lapi
- Dipartimento di Chimica, Universita` degli Studi di Roma "La Sapienza", Rome, Italy.,Istituto per i Sistemi Biologici (ISB-CNR), Sede Secondaria di Roma-Meccanismi di Reazione, c/o Dipartimento di Chimica, Universita` degli Studi di Roma "La Sapienza", Rome, Italy
| | - Claudio D'Alfonso
- Dipartimento di Chimica, Universita` degli Studi di Roma "La Sapienza", Rome, Italy
| | - Tiziana Del Giacco
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Perugia, Italy.,Centro di Eccellenza Materiali Innovativi Nanostrutturati (CEMIN), Università di Perugia, Perugia, Italy
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica, Universita` degli Studi di Roma "La Sapienza", Rome, Italy.,Istituto per i Sistemi Biologici (ISB-CNR), Sede Secondaria di Roma-Meccanismi di Reazione, c/o Dipartimento di Chimica, Universita` degli Studi di Roma "La Sapienza", Rome, Italy
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9
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Aganda KCC, Hong B, Lee A. Visible‐Light‐Promoted Switchable Synthesis of C‐3‐Functionalized Quinoxalin‐2(1
H
)‐ones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001396] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Kim Christopher C. Aganda
- Department of Energy Science and Technology Myongji University Yongin 17058 Republic of Korea
- Department of Chemistry Jeonbuk National University Jeonju 54896 Republic of Korea
| | - Boseok Hong
- Department of Chemistry Myongji University Yongin 17058 Republic of Korea
| | - Anna Lee
- Department of Chemistry Jeonbuk National University Jeonju 54896 Republic of Korea
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10
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Hong B, Aganda KCC, Lee A. Oxidative C-S Bond Cleavage of Benzyl Thiols Enabled by Visible-Light-Mediated Silver(II) Complexes. Org Lett 2020; 22:4395-4399. [PMID: 32459496 DOI: 10.1021/acs.orglett.0c01399] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The oxidative cleavage reaction of the C-S bond using singlet oxygen is challenging because of its uncontrollable nature. We have developed a novel method for the singlet-oxygen-mediated selective C-S bond cleavage reaction using silver(II)-ligand complexes. Visible-light-induced silver catalysis enables the controlled oxidative cleavage of benzyl thiols to afford carbonyl compounds, such as aldehydes or ketones, which are important synthetic components.
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11
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Thiruvengetam P, Chakravarthy RD, Chand DK. A molybdenum based metallomicellar catalyst for controlled and chemoselective oxidation of activated alcohols in aqueous medium. J Catal 2019. [DOI: 10.1016/j.jcat.2019.06.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Nauth AM, Schechtel E, Dören R, Tremel W, Opatz T. TiO2 Nanoparticles Functionalized with Non-innocent Ligands Allow Oxidative Photocyanation of Amines with Visible/Near-Infrared Photons. J Am Chem Soc 2018; 140:14169-14177. [DOI: 10.1021/jacs.8b07539] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Alexander M. Nauth
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Eugen Schechtel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - René Dören
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Till Opatz
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
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13
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Xu J, Wu Z, Wan H, Deng G, Lu B, Eckhardt AK, Schreiner PR, Trabelsi T, Francisco JS, Zeng X. Phenylsulfinyl Radical: Gas-Phase Generation, Photoisomerization, and Oxidation. J Am Chem Soc 2018; 140:9972-9978. [PMID: 29989805 DOI: 10.1021/jacs.8b05055] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jian Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhuang Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Huabin Wan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Guohai Deng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Bo Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - André K. Eckhardt
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R. Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Tarek Trabelsi
- University of Nebraska − Lincoln, Lincoln, Nebraska 68526, United States
| | - Joseph S. Francisco
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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14
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Martinez-Haya R, Sabater C, Castillo MÁ, Miranda MA, Marin ML. A mechanistic study on the potential of quinolinium salts as photocatalysts for the abatement of chlorinated pollutants. JOURNAL OF HAZARDOUS MATERIALS 2018; 351:277-284. [PMID: 29554524 DOI: 10.1016/j.jhazmat.2018.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 02/28/2018] [Accepted: 03/06/2018] [Indexed: 06/08/2023]
Abstract
Photocatalytic degradation of three highly chlorinated contaminants, namely 2,4,6-trichlorophenol (TCP), 2,4,6-trichloroanisole (TCA) and 5-chloro-2-(2,4-dichlorophenoxy)phenol (triclosan, TCS) has been investigated in the presence of N-methylquinolinium tetrafluoroborate (NMQ+), a photocatalyst able to act via Type I or Type II mechanism. Photodegradation of contaminants under aerobic conditions was achieved within hours; and it was accompanied by mineralization, as demonstrated by trapping of the evolved carbon dioxide as barium carbonate. Moreover, a high degree of detoxification, based on % inmobilization of daphnids (Daphnia magna bioassay), was reached after 70 h of irradiation. Quenching of the NMQ+ fluorescence by the pollutants was evidenced by a decrease in the emission intensity and lifetime. Detection of the reduced NMQ· by laser flash photolysis in the presence of the pollutants provided an unambigous evidence of the electron transfer process. Quenching of singlet oxygen by the contaminants showed the typical singlet oxygen quenching constants (105-106 M-1 s-1). Evaluation of the relative contribution of both pathways (Type I vs Type II) point to the photodegradation occurring via a Type I mechanism, being the contribution of Type II mechanism negligible at any concentration range.
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Affiliation(s)
- Rebeca Martinez-Haya
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos s/n, E-46022, Valencia, Spain
| | - Consuelo Sabater
- Departamento de Biotecnología, Universitat Politècnica de València, Camino de Vera s/n, E-46022 Valencia, Spain
| | - Maria-Ángeles Castillo
- Departamento de Biotecnología, Universitat Politècnica de València, Camino de Vera s/n, E-46022 Valencia, Spain
| | - Miguel A Miranda
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos s/n, E-46022, Valencia, Spain.
| | - M Luisa Marin
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos s/n, E-46022, Valencia, Spain.
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15
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Sulfur Radicals and Their Application. Top Curr Chem (Cham) 2018; 376:22. [DOI: 10.1007/s41061-018-0197-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/11/2018] [Indexed: 12/11/2022]
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16
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Yamamoto A, Ohara T, Yoshida H. Visible-light-induced photocatalytic benzene/cyclohexane cross-coupling utilizing a ligand-to-metal charge transfer benzene complex adsorbed on titanium oxides. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02566a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
High selectivity was achieved in the photocatalytic cross-coupling of benzene and cyclohexane by photoexcitation of a surface benzene complex.
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Affiliation(s)
- A. Yamamoto
- Department of Interdisciplinary Environment
- Graduate School of Human and Environmental Studies
- Kyoto University
- Kyoto 606-8501
- Japan
| | - T. Ohara
- Department of Interdisciplinary Environment
- Graduate School of Human and Environmental Studies
- Kyoto University
- Kyoto 606-8501
- Japan
| | - H. Yoshida
- Department of Interdisciplinary Environment
- Graduate School of Human and Environmental Studies
- Kyoto University
- Kyoto 606-8501
- Japan
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17
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Barbieri A, Del Giacco T, Di Stefano S, Lanzalunga O, Lapi A, Mazzonna M, Olivo G. Electron Transfer Mechanism in the Oxidation of Aryl 1-Methyl-1-phenylethyl Sulfides Promoted by Nonheme Iron(IV)-Oxo Complexes: The Rate of the Oxygen Rebound Process. J Org Chem 2016; 81:12382-12387. [PMID: 27978740 DOI: 10.1021/acs.joc.6b02434] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The oxidation of aryl 1-methyl-1-phenylethyl sulfides promoted by the nonheme iron(IV)-oxo complexes [(N4Py)FeIV═O]2+ and [(Bn-TPEN)FeIV═O]2+ occurs by an electron transfer-oxygen rebound (ET-OT) mechanism leading to aryl 1-methyl-1-phenylethyl sulfoxides accompanied by products derived from Cα-S fragmentation of sulfide radical cations (2-phenyl-2-propanol and diaryl disulfides). For the first time, the rate constants for the oxygen rebound process (kOT), which are in the range of <0.8 × 104 to 3.5 × 104 s-1, were determined from the fragmentation rate constants of the radical cations (kf) and the S oxidation/fragmentation product ratios.
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Affiliation(s)
- Alessia Barbieri
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Tiziana Del Giacco
- Dipartimento di Chimica, Biologia e Biotecnologie and Centro di Eccellenza Materiali Innovativi Nanostrutturati, Università di Perugia , via Elce di sotto 8, 06123 Perugia, Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Andrea Lapi
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Marco Mazzonna
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Giorgio Olivo
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
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18
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Affiliation(s)
- Nathan A. Romero
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - David A. Nicewicz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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19
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Barbieri A, De Carlo Chimienti R, Del Giacco T, Di Stefano S, Lanzalunga O, Lapi A, Mazzonna M, Olivo G, Salamone M. Oxidation of Aryl Diphenylmethyl Sulfides Promoted by a Nonheme Iron(IV)-Oxo Complex: Evidence for an Electron Transfer-Oxygen Transfer Mechanism. J Org Chem 2016; 81:2513-20. [PMID: 26886491 DOI: 10.1021/acs.joc.6b00099] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The oxidation of a series of aryl diphenylmethyl sulfides (4-X-C6H4SCH(C6H5)2, where X = OCH3 (1), X = CH3 (2), X = H (3), and X = CF3 (4)) promoted by the nonheme iron(IV)-oxo complex [(N4Py)Fe(IV)═O](2+) occurs by an electron transfer-oxygen transfer (ET-OT) mechanism as supported by the observation of products (diphenylmethanol, benzophenone, and diaryl disulfides) deriving from α-C-S and α-C-H fragmentation of radical cations 1(+•)-4(+•), formed besides the S-oxidation products (aryl diphenylmethyl sulfoxides). The fragmentation/S-oxidation product ratios regularly increase through a decrease in the electron-donating power of the aryl substituents, that is, by increasing the fragmentation rate constants of the radical cations as indicated by a laser flash photolysis (LFP) study of the photochemical oxidation of 1-4 carried out in the presence of N-methoxyphenanthridinium hexafluorophosphate (MeOP(+)PF6(-)).
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Affiliation(s)
- Alessia Barbieri
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Rosemilia De Carlo Chimienti
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Tiziana Del Giacco
- Dipartimento di Chimica, Biologia e Biotecnologie and Centro di Eccellenza Materiali Innovativi Nanostrutturati, Università di Perugia , Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Andrea Lapi
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Marco Mazzonna
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Giorgio Olivo
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza" , P. le A. Moro 5, 00185 Rome, Italy
| | - Michela Salamone
- Dipartimento di Scienze e Tecnologie Chimiche, Università "Tor Vergata" , Via della Ricerca Scientifica 1, I-00133 Rome, Italy
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20
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Ohkubo K, Hirose K, Fukuzumi S. Two-phase oxidation of toluene derivatives by dioxygen using the 3-cyano-1-decylquinolinium ion as a photocatalyst. RSC Adv 2016. [DOI: 10.1039/c6ra05993g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The two-phase photocatalytic oxidation of toluene by O2 occurred efficiently using the 3-cyano-1-decylquinolinium ion in toluene with H2O to produce the oxygenated products in the organic phase and H2O2 in the aqueous phase.
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Affiliation(s)
- Kei Ohkubo
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA and SENTAN
- Japan Science and Technology Agency (JST)
| | - Kensaku Hirose
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA and SENTAN
- Japan Science and Technology Agency (JST)
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 120-750
- Korea
- Faculty of Science and Technology
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21
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science; Graduate School of Engineering; Osaka University, ALCA and SENTAN; Japan Science and Technology Agency (JST); 2-1 Yamada-oka, Suita Osaka 565-0871 Japan
- Department of Bioinspired Science; Ewha Womans University; Seoul 120-750 Korea
- Faculty of Science and Technology; Meijo University and ALCA and SENTAN, Japan Science and Technology Agency (JST); Tempaku Nagoya, Aichi 468-8502 Japan
| | - Kei Ohkubo
- Department of Material and Life Science; Graduate School of Engineering; Osaka University, ALCA and SENTAN; Japan Science and Technology Agency (JST); 2-1 Yamada-oka, Suita Osaka 565-0871 Japan
- Department of Bioinspired Science; Ewha Womans University; Seoul 120-750 Korea
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22
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Del Giacco T, Lanzalunga O, Lapi A, Mazzonna M, Mencarelli P. Photosensitized Oxidation of Aryl Benzyl Sulfoxides. Evidence for Nucleophilic Assistance to the C–S Bond Cleavage of Aryl Benzyl Sulfoxide Radical Cations. J Org Chem 2015; 80:2310-8. [DOI: 10.1021/jo502844e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tiziana Del Giacco
- Dipartimento
di Chimica, Biologia e Biotecnologie and Centro di Eccellenza Materiali
Innovativi Nanostrutturati, Università di Perugia, via Elce
di sotto 8, 06123 Perugia, Italy
| | - Osvaldo Lanzalunga
- Dipartimento
di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi
di Reazione c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Andrea Lapi
- Dipartimento
di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi
di Reazione c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Marco Mazzonna
- Dipartimento
di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi
di Reazione c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Paolo Mencarelli
- Dipartimento
di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi
di Reazione c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
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23
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Ohkubo K, Hirose K, Fukuzumi S. Solvent-Free One-Step Photochemical Hydroxylation of Benzene Derivatives by the Singlet Excited State of 2,3-Dichloro-5,6-dicyano-p-benzoquinone Acting as a Super Oxidant. Chemistry 2014; 21:2855-61. [DOI: 10.1002/chem.201404810] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Indexed: 11/08/2022]
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24
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Ohkubo K, Fujimoto A, Fukuzumi S. Photocatalytic Monofluorination of Benzene by Fluoride via Photoinduced Electron Transfer with 3-Cyano-1-methylquinolinium. J Phys Chem A 2013; 117:10719-25. [DOI: 10.1021/jp408315a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Kei Ohkubo
- Department
of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science and Technology Agency (JST), 2-1 Yamada-oka,
Suita, Osaka 565-0871, Japan
| | - Atsushi Fujimoto
- Department
of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science and Technology Agency (JST), 2-1 Yamada-oka,
Suita, Osaka 565-0871, Japan
| | - Shunichi Fukuzumi
- Department
of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science and Technology Agency (JST), 2-1 Yamada-oka,
Suita, Osaka 565-0871, Japan
- Department
of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
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25
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Affiliation(s)
- Osvaldo Lanzalunga
- a Dipartimento di Chimica, Università di Roma “La Sapienza” and Istituto CNR di Metodologie Chimiche (IMC-CNR) , Sezione Meccanismi di Reazione , P.le Aldo Moro 5, Rome , Italy
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26
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Cavattoni T, Del Giacco T, Lanzalunga O, Mazzonna M, Mencarelli P. Structural Effects on the C–S Bond Cleavage in Aryl tert-Butyl Sulfoxide Radical Cations. J Org Chem 2013; 78:4886-94. [DOI: 10.1021/jo400461c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Tullio Cavattoni
- Dipartimento di Chimica and
Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione
c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Tiziana Del Giacco
- Dipartimento di Chimica and
Centro di Eccellenza Materiali Innovativi Nanostrutturati, Università di Perugia, via Elce di Sotto 8,
06123 Perugia, Italy
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica and
Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione
c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Marco Mazzonna
- Dipartimento di Chimica and
Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione
c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Paolo Mencarelli
- Dipartimento di Chimica and
Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione
c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
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27
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Ohkubo K, Fujimoto A, Fukuzumi S. Visible-Light-Induced Oxygenation of Benzene by the Triplet Excited State of 2,3-Dichloro-5,6-dicyano-p-benzoquinone. J Am Chem Soc 2013; 135:5368-71. [DOI: 10.1021/ja402303k] [Citation(s) in RCA: 194] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kei Ohkubo
- Department
of Material and Life
Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology (JST), Suita, Osaka 565-0871, Japan
| | - Atsushi Fujimoto
- Department
of Material and Life
Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology (JST), Suita, Osaka 565-0871, Japan
| | - Shunichi Fukuzumi
- Department
of Material and Life
Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology (JST), Suita, Osaka 565-0871, Japan
- Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
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28
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29
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Zhang X. Mass spectrometric and theoretical studies on dissociation of the CS bond in the benzenesulfonic acid and benzenesulfinic acid anion series: Homolytic cleavage vs heterolytic cleavage. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.06.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Ohkubo K, Kobayashi T, Fukuzumi S. Photocatalytic alkoxylation of benzene with 3-cyano-1-methylquinolinium ion. OPTICS EXPRESS 2012; 20 Suppl 2:A360-A365. [PMID: 22418686 DOI: 10.1364/oe.20.00a360] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
One-pot alkoxylation of benzene with alcohols occurs under photoirradiation of 3-cyano-1-methylquinolinium ion in an oxygen-saturated acetonitrile solution containing benzene and alcohols. The photocatalytic reaction mechanism was clarified by nanosecond laser flash photolysis. The photocataytic alkoxylation of benzene is initiated by photoinduced electron transfer from benzene to the singlet excited state of 3-cyano-1-methylquinolinium ion, followed by the nucleophilic addition of alcohols to benzene radical cation. In the case of photoethoxylation, the optimal product and quantum yields of ethoxybenzene were 20% and 10%, respectively.
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Affiliation(s)
- Kei Ohkubo
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
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31
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Del Giacco T, Lanzalunga O, Mazzonna M, Mencarelli P. Structural and Solvent Effects on the C–S Bond Cleavage in Aryl Triphenylmethyl Sulfide Radical Cations. J Org Chem 2012; 77:1843-52. [DOI: 10.1021/jo202418d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tiziana Del Giacco
- Dipartimento di Chimica and
Centro di Eccellenza Materiali Innovativi Nanostrutturati, Università di Perugia, via Elce di Sotto 8,
06123 Perugia, Italy
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica and
Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione
c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Marco Mazzonna
- Dipartimento di Chimica and
Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione
c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Paolo Mencarelli
- Dipartimento di Chimica and
Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione
c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
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32
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Ohkubo K, Kobayashi T, Fukuzumi S. Direct Oxygenation of Benzene to Phenol Using Quinolinium Ions as Homogeneous Photocatalysts. Angew Chem Int Ed Engl 2011; 50:8652-5. [DOI: 10.1002/anie.201102931] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 07/01/2011] [Indexed: 11/06/2022]
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33
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Ohkubo K, Kobayashi T, Fukuzumi S. Direct Oxygenation of Benzene to Phenol Using Quinolinium Ions as Homogeneous Photocatalysts. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102931] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Baciocchi E, Lanzalunga O, Lapi A, Maggini L. Stereochemistry of the C−S Bond Cleavage in cis-2-Methylcyclopentyl Phenyl Sulfoxide Radical Cation. J Org Chem 2009; 74:1805-8. [DOI: 10.1021/jo802619y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Enrico Baciocchi
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Andrea Lapi
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
| | - Laura Maggini
- Dipartimento di Chimica and Istituto CNR di Metodologie Chimiche-IMC, Sezione Meccanismi di Reazione c/o Dipartimento di Chimica, Sapienza Università di Roma, P.le A. Moro 5, 00185 Rome, Italy
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35
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