1
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Kim SG, Kim D, Oh J, Son YJ, Jeong S, Kim J, Hwang SJ. Phosphorus-Ligand Redox Cooperative Catalysis: Unraveling Four-Electron Dioxygen Reduction Pathways and Reactive Intermediates. J Am Chem Soc 2024. [PMID: 38597246 DOI: 10.1021/jacs.4c01748] [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
The reduction of dioxygen to water is crucial in biology and energy technologies, but it is challenging due to the inertness of triplet oxygen and complex mechanisms. Nature leverages high-spin transition metal complexes for this, whereas main-group compounds with their singlet state and limited redox capabilities exhibit subdued reactivity. We present a novel phosphorus complex capable of four-electron dioxygen reduction, facilitated by unique phosphorus-ligand redox cooperativity. Spectroscopic and computational investigations attribute this cooperative reactivity to the unique electronic structure arising from the geometry of the phosphorus complex bestowed by the ligand. Mechanistic study via spectroscopic and kinetic experiments revealed the involvement of elusive phosphorus intermediates resembling those in metalloenzymes. Our result highlights the multielectron reactivity of phosphorus compound emerging from a carefully designed ligand platform with redox cooperativity. We anticipate that the work described expands the strategies in developing main-group catalytic reactions, especially in small molecule fixations demanding multielectron redox processes.
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Affiliation(s)
- Sung Gyu Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Dongyoung Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Jinrok Oh
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Yeong Jun Son
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Sangmin Jeong
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Joonghan Kim
- Department of Chemistry, The Catholic University of Korea, Bucheon 14662, Republic of Korea
| | - Seung Jun Hwang
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
- Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
- Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University, Seoul 03722, Republic of Korea
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2
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Wang Y, Lin Y, He S, Wu S, Yang C. Singlet oxygen: Properties, generation, detection, and environmental applications. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132538. [PMID: 37734310 DOI: 10.1016/j.jhazmat.2023.132538] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 09/01/2023] [Accepted: 09/11/2023] [Indexed: 09/23/2023]
Abstract
Singlet oxygen (1O2) is molecular oxygen in the excited state with high energy and electrophilic properties. It is widely found in nature, and its important role is gradually extending from chemical syntheses and medical techniques to environmental remediation. However, there exist ambiguities and controversies regarding detection methods, generation pathways, and reaction mechanisms which have hindered the understanding and applications of 1O2. For example, the inaccurate detection of 1O2 has led to an overestimation of its role in pollutant degradation. The difficulty in detecting multiple intermediate species obscures the mechanism of 1O2 production. The applications of 1O2 in environmental remediation have also not been comprehensively commented on. To fill these knowledge gaps, this paper systematically discussed the properties and generation of 1O2, reviewed the state-of-the-art detection methods for 1O2 and long-standing controversies in the catalytic systems. Future opportunities and challenges were also discussed regarding the applications of 1O2 in the degradation of pollutants dissolved in water and volatilized in the atmosphere, the disinfection of drinking water, the gas/solid sterilization, and the self-cleaning of filter membranes. This review is expected to provide a better understanding of 1O2-based advanced oxidation processes and practical applications in the environmental protection of 1O2.
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Affiliation(s)
- Yue Wang
- College of Environmental Science and Engineering, Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Zhejiang Gongshang University, Hangzhou, Zhejiang 310012, China; College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Yan Lin
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Shanying He
- College of Environmental Science and Engineering, Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Zhejiang Gongshang University, Hangzhou, Zhejiang 310012, China.
| | - Shaohua Wu
- Academy of Environmental and Resource Sciences, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China.
| | - Chunping Yang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China; Academy of Environmental and Resource Sciences, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China; School of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang, Jiangxi 330063, China.
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3
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Horký F, Franz R, Bruhn C, Pietschnig R. A General Strategy for Increasing the Air Stability of Phosphines Including Primary Phosphines. Chemistry 2023; 29:e202302518. [PMID: 37650772 DOI: 10.1002/chem.202302518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/31/2023] [Accepted: 08/31/2023] [Indexed: 09/01/2023]
Abstract
A general approach for increasing the air-stability of various primary phosphines in the absence of kinetic stabilization is presented that contrasts with previous interpretations, which were limited to specific phosphines. This contribution shows the synthesis of a series of air-stable primary phosphines Fc(CH2 )n PH2 , where n=0,1,2,3; and Fc=ferrocenyl, and their corresponding isolable primary phosphine oxides. It was demonstrated that the ferrocene moiety exerts an antioxidant effect on the primary phosphine group, which is intermolecular, solvent dependent and increases with the electron density on the ferrocene moiety. Furthermore, we demonstrated that the presence of ferrocene in solution also inhibits the oxidation of other secondary and tertiary phosphines in air. Together our findings suggest that quenching of singlet oxygen is the actual reason for the antioxidant effect; this was experimentally confirmed by using other established singlet oxygen quenchers, thus demonstrating a key role of singlet oxygen in the aerobic oxidation of phosphines.
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Affiliation(s)
- Filip Horký
- Institute for Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - Roman Franz
- Institute for Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - Clemens Bruhn
- Institute for Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - Rudolf Pietschnig
- Institute for Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
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4
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van Vliet S, Hermens JGH, Fu Y, Pfeifer L, Feringa BL. Hydrazone-based boron difluoride complexes as triplet photosensitizers for singlet oxygen generation. Chem Commun (Camb) 2023; 59:884-887. [PMID: 36594230 DOI: 10.1039/d2cc05336e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Due to the highly selective nature of singlet oxygen as an oxidant, it has received considerable interest in various areas of (organic) chemistry. Two green light activated hydrazone-based boron difluoride triplet photosensitizers possessing high quantum yields for 1O2 formation are reported. These photostable complexes are promising in applications in synthesis and catalysis.
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Affiliation(s)
- Sven van Vliet
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Johannes G H Hermens
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Youxin Fu
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Lukas Pfeifer
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747 AG, The Netherlands
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5
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Clennan EL. Aromatic Endoperoxides. Photochem Photobiol 2022; 99:204-220. [PMID: 35837947 DOI: 10.1111/php.13674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/12/2022] [Indexed: 11/27/2022]
Abstract
The fundamental aspects of aromatic endoperoxide chemistry are reviewed including their synthesis and reactions. The discussion will focus on factors that will both enhance and prevent the formation of aromatic endoperoxides, and on structural features that will provide control over their ability to release singlet oxygen. This approach recognizes the dual use of aromatic hydrocarbons as both precursors of endoperoxides and as valuable materials for incorporation in electronic and photonic devices. Improvement of the existing methods and development of new methods for the synthesis of endoperoxides is necessary as result of the demand to improve existing and to create new applications for these valuable materials. On the other hand, prevention of endoperoxide formation is crucial to inhibit irreversible oxidative degradation of aromatic hydrocarbons and to extend their lifetimes as useful organic semiconductors.
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Affiliation(s)
- Edward L Clennan
- Department of Chemistry, University of Wyoming, Laramie, WY, 82071, USA
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6
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Kondo M, Agou T. Catalytic aerobic photooxidation of triarylphosphines using dibenzo-fused 1,4-azaborines. Chem Commun (Camb) 2022; 58:5001-5004. [PMID: 35362494 DOI: 10.1039/d2cc00782g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although dibenzo-fused 1,4-heteroaromatics are utilized as strongly reducing photocatalysts in organic synthesis and polymerization, they have rarely been employed in catalytic photooxidation. Moreover, to date, their boron-analogs, dibenzo-fused 1,4-azaborines (DBABs), have not been applied in photocatalysis despite their promising potential as photocatalysts. Accordingly, herein, aerobic photooxidation of triarylphosphines (Ar3P) was performed using DBABs as photocatalysts. The reaction smoothly proceeded in an aprotic solvent, and phosphine oxides were obtained in appropriate yields. Density functional theory calculations suggested that DBAB captured and activated phosphadioxirane intermediates, which were generated by the interaction of Ar3P with 1O2, at the Lewis acidic boron center.
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Affiliation(s)
- Masaru Kondo
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi-Shi, Ibaraki 316-8511, Japan.
| | - Tomohiro Agou
- Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi-Shi, Ibaraki 316-8511, Japan.
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7
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El-Assaad TH, Zhu J, Sebastian A, McGrath DV, Neogi I, Parida KN. Dioxiranes: A Half-Century Journey. Org Chem Front 2022. [DOI: 10.1039/d2qo01005d] [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
Dioxiranes are multi-tasking reagents inheriting mild and selective oxygen transfer attributes. These oxidants are accessed from the reaction of ketones with an oxidant and are employed stoichiometrically or catalytically (in...
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8
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Protti S, Mella M, Bonesi SM. Photochemistry of triphenylamine (TPA) in homogeneous solution and the role of transient N-phenyl-4 a,4 b-dihydrocarbazole. A steady-state and time-resolved investigation. NEW J CHEM 2021. [DOI: 10.1039/d1nj03101e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Irradiation of triphenylamine with a laser pulse (355 nm) provided intermediate N-phenyl-4a,4b-tetrahydrocarbazole (DHC0) whose reactivity depends on the reaction media and atmospheres used.
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Affiliation(s)
- Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V. le Taramelli 12, 27100 Pavia, Italy
| | - Mariella Mella
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V. le Taramelli 12, 27100 Pavia, Italy
| | - Sergio M. Bonesi
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V. le Taramelli 12, 27100 Pavia, Italy
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Buenos Aires, C1428EGA, Argentina
- CONICET–Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, C1428EGA, Argentina
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9
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Sancheti SP, Akram MO, Roy R, Bedi V, Kundu S, Patil NT. ortho-Oxygenative 1,2-Difunctionalization of Diarylalkynes under Merged Gold/Organophotoredox Relay Catalysis. Chem Asian J 2019; 14:4601-4606. [PMID: 31589800 DOI: 10.1002/asia.201901275] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 09/30/2019] [Indexed: 02/05/2023]
Abstract
Reported herein is an ortho-oxygenative 1,2-difunctionalization of diarylalkynes under merged gold/organophotoredox catalysis to access highly functionalized 2-(2-hydroxyaryl)-2-alkoxy-1-arylethan-1-ones. Detailed mechanistic studies suggested a relay process, initiating with gold-catalyzed hydroalkoxylation of alkynes, to generate enol-ether followed by a key formal [4+2]-cycloaddition reaction. The successful application of the present methodology was also shown for the synthesis of benzofurans.
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Affiliation(s)
- Shashank P Sancheti
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
| | - Manjur O Akram
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411 008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110 025, India
| | - Rupam Roy
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
| | - Vaibhav Bedi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
| | - Shubhankar Kundu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India
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10
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Zhao X, Song C, Hong K, Xu X, Chen C, Chu X, Zeng X. Spectroscopic identification of monomeric methyl metaphosphate. Dalton Trans 2019; 48:13907-13911. [PMID: 31469132 DOI: 10.1039/c9dt03367j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Monomeric methyl metaphosphate (CH3OPO2), a highly electrophilic phosphorylating intermediate in chemical oligonucleotide synthesis, has been generated in the gas phase by high-vacuum flash pyrolysis (1000 K) of methyl 2-butenylphosphonate. In addition to the unambiguous characterization using IR spectroscopy in solid N2-, Ar-, and Ne-matrices, the formation CH3OPO2 in the photooxidation of the prototypical phosphinidene oxide CH3PO by O2 with 18O-isotope scrambling has been observed in the solid N2-matrix (15 K).
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Affiliation(s)
- Xiaofang Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Chao Song
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Kemiao Hong
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Xinfang Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Changyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Xianxu Chu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China. and Department of Chemistry, Fudan University, Shanghai 200433, China.
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11
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DeHaven BA, Liberatore HK, Greer A, Richardson SD, Shimizu LS. Probing the Formation of Reactive Oxygen Species by a Porous Self-Assembled Benzophenone Bis-Urea Host. ACS OMEGA 2019; 4:8290-8298. [PMID: 31459915 PMCID: PMC6648088 DOI: 10.1021/acsomega.9b00831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 04/25/2019] [Indexed: 06/10/2023]
Abstract
Herein, we examine the photochemical formation of reactive oxygen species (ROS) by a porous benzophenone-containing bis-urea host (1) to investigate the mechanism of photooxidations that occur within the confines of its nanochannels. UV irradiation of the self-assembled host in the presence of molecular oxygen generates both singlet oxygen and superoxide when suspended in solution. The efficiency of ROS generation by the host is lower than that of benzophenone (BP), which could be beneficial for reactions carried out catalytically, as ROS species react quickly and often unselectively. Superoxide formation was detected through reaction with 5,5-dimethyl-1-pyrroline N-oxide in the presence of methanol. However, it is not detected in CHCl3, as it reacts rapidly with the solvent to generate methaneperoxy and chloride anions, similar to BP. The lifetime of airborne singlet oxygen (τΔairborne) was examined at the air-solid outer surface of the host and host·quencher complexes and suggests that quenching is a surface phenomenon. The efficiency of the host and BP as catalysts was compared for the photooxidation of 1-methyl-1-cyclohexene in solution. Both the host and BP mediate the photooxidation in CHCl3, benzene, and benzene-d 6, producing primarily epoxide-derived products with low selectivity likely by both type I and type II photooxidation processes. Interestingly, in CHCl3, two chlorohydrins were also formed, reflecting the formation of chloride in this solvent. In contrast, UV irradiation of the host·guest crystals in an oxygen atmosphere produced no epoxide and appeared to favor mainly the type II processes. Photolysis afforded high conversion to only three products: an enone, a tertiary allylic alcohol, and a diol, which demonstrates the accessibility of the encapsulated reactants to oxygen and the influence of confinement on the reaction pathway.
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Affiliation(s)
- Baillie A. DeHaven
- Department of Chemistry
and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Hannah K. Liberatore
- Department of Chemistry
and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Alexander Greer
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States
- Ph.D. Program in Chemistry, Graduate Center
of City University of New York, New York, New York 10016, United States
| | - Susan D. Richardson
- Department of Chemistry
and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Linda S. Shimizu
- Department of Chemistry
and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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12
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Korb M, Lang H. The anionic Fries rearrangement: a convenient route to ortho-functionalized aromatics. Chem Soc Rev 2019; 48:2829-2882. [DOI: 10.1039/c8cs00830b] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The scope and mechanism of anionic (hetero-) Fries rearrangements are summarized for various migrating groups and arenes, including applications and computational studies.
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Affiliation(s)
- Marcus Korb
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- Chemnitz
| | - Heinrich Lang
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- Chemnitz
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13
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Chu X, Song C, Yang Y, Zeng X. Oxidation of a phosphinidene oxide: formation of a dioxaphosphirane oxide with oxygen scrambling. Chem Commun (Camb) 2018; 55:245-248. [PMID: 30534675 DOI: 10.1039/c8cc08945k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The oxidation of a prototypical phosphinidene oxide FP[double bond, length as m-dash]O has been studied in O2-doped Ar and N2 matrices at 10 K. Upon 266 nm laser irradiation, FP[double bond, length as m-dash]O combines with O2 and yields the cyclic peroxide, dioxaphosphirane oxide FP([double bond, length as m-dash]O)(O2). Unexpected oxygen scrambling occurs during the oxygenation as evidenced by the observation of a 1 : 2 mixture of FP([double bond, length as m-dash]16O)(18O18O) and FP([double bond, length as m-dash]18O)(16O18O) when 18O2 was used. Quantum chemical calculations suggest that the scrambling happens via the intermediacy of the low-lying triplet FPO3 by passing minimum energy crossing points (MECPs). In addition, inorganic dioxophosphorane FP([double bond, length as m-dash]O)2 has been also identified among the oxidation products of FP[double bond, length as m-dash]O.
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Affiliation(s)
- Xianxu Chu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
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14
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Ding A, Li S, Chen Y, Jin R, Ye C, Hu J, Guo H. Visible light-induced 4-phenylthioxanthone-catalyzed aerobic oxidation of triarylphosphines. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Zhang Y, Ye C, Li S, Ding A, Gu G, Guo H. Eosin Y-catalyzed photooxidation of triarylphosphines under visible light irradiation and aerobic conditions. RSC Adv 2017. [DOI: 10.1039/c6ra25469a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A novel method for Eosin Y-catalyzed photooxidation of triarylphosphines under visible light irradiation and aerobic conditions was reported.
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Affiliation(s)
- Yanbin Zhang
- Department of Chemistry
- Fudan University
- Shanghai
- P. R. China
| | - Cong Ye
- Department of Chemistry
- Fudan University
- Shanghai
- P. R. China
| | - Shijie Li
- Department of Chemistry
- Fudan University
- Shanghai
- P. R. China
| | - Aishun Ding
- Department of Chemistry
- Fudan University
- Shanghai
- P. R. China
| | - Guangxin Gu
- Department of Materials Science
- Fudan University
- Shanghai
- P. R. China
| | - Hao Guo
- Department of Chemistry
- Fudan University
- Shanghai
- P. R. China
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16
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Bonesi SM, Protti S, Albini A. Reactive Oxygen Species (ROS)-vs Peroxyl-Mediated Photosensitized Oxidation of Triphenylphosphine: A Comparative Study. J Org Chem 2016; 81:11678-11685. [DOI: 10.1021/acs.joc.6b02088] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergio Mauricio Bonesi
- Departamento
de Química Orgánica, CIHIDECAR − CONICET, 3er Piso, Pabellón 2, Ciudad Universitaria, FCEyN, University of Buenos Aires, Buenos Aires 1428, Argentina
- Department
of Chemistry, PhotoGreen Lab, V.Le Taramelli 12, 27100 Pavia, Italy
| | - Stefano Protti
- Department
of Chemistry, PhotoGreen Lab, V.Le Taramelli 12, 27100 Pavia, Italy
| | - Angelo Albini
- Department
of Chemistry, PhotoGreen Lab, V.Le Taramelli 12, 27100 Pavia, Italy
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17
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Shritz R, Shapira R, Borzin E, Tumanskii B, Reichstein W, Meichner C, Schwaiger F, Reichstein PM, Kreyenschmidt J, Haarer D, Kador L, Eichen Y. Measuring Cumulative Exposure to Oxygen with a Diphenylphosphine–Alkyl Naphthaleneimide Luminescence Turn‐On Dyad. Chemistry 2015; 21:11531-7. [DOI: 10.1002/chem.201500479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/14/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Rozalia Shritz
- Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Technion City 3200008 Haifa (Israel)
| | - Reut Shapira
- Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Technion City 3200008 Haifa (Israel)
| | - Elena Borzin
- Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Technion City 3200008 Haifa (Israel)
| | - Boris Tumanskii
- Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Technion City 3200008 Haifa (Israel)
| | - Werner Reichstein
- Institute of Physics and Bayreuther Institut für Makromolekülforschung, University of Bayreuth, 95440 Bayreuth (Germany)
| | - Christoph Meichner
- Institute of Physics and Bayreuther Institut für Makromolekülforschung, University of Bayreuth, 95440 Bayreuth (Germany)
| | - Florian Schwaiger
- Institute of Physics and Bayreuther Institut für Makromolekülforschung, University of Bayreuth, 95440 Bayreuth (Germany)
| | - Paul M. Reichstein
- Institute of Physics and Bayreuther Institut für Makromolekülforschung, University of Bayreuth, 95440 Bayreuth (Germany)
| | - Judith Kreyenschmidt
- Institute of Animal Science, University of Bonn, Katzenburgweg 7‐9, 53115 Bonn (Germany)
| | - Dietrich Haarer
- Institute of Physics and Bayreuther Institut für Makromolekülforschung, University of Bayreuth, 95440 Bayreuth (Germany)
| | - Lothar Kador
- Institute of Physics and Bayreuther Institut für Makromolekülforschung, University of Bayreuth, 95440 Bayreuth (Germany)
| | - Yoav Eichen
- Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Technion City 3200008 Haifa (Israel)
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18
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Yasui S, Badal MMR, Kobayashi S, Mishima M. Combination of LFP-TRIR spectroscopy and DFT computation as a tool to determine the intermediate during the photooxidation of triarylphosphine. J PHYS ORG CHEM 2014. [DOI: 10.1002/poc.3383] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shinro Yasui
- Faculty of Contemporary Human Life Science; Tezukayama University; Gakuen-Minami Nara 631-8585 Japan
| | - Md. Mizanur Rahman Badal
- Institute for Materials Chemistry and Engineering; Kyushu University; Hakozaki, Higashi-ku Fukuoka 812-8581 Japan
| | - Shinjiro Kobayashi
- Institute for Materials Chemistry and Engineering; Kyushu University; Hakozaki, Higashi-ku Fukuoka 812-8581 Japan
| | - Masaaki Mishima
- Institute for Materials Chemistry and Engineering; Kyushu University; Hakozaki, Higashi-ku Fukuoka 812-8581 Japan
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19
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Bonesi SM, Dondi D, Protti S, Fagnoni M, Albini A. (Co)oxidation/cyclization processes upon irradiation of triphenylamine. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.03.086] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Yasui S, Badal MMR, Kobayashi S, Mishima M. DFT Computations to Simulate the IR Spectrum of a Transient Intermediate Generated upon Laser Flash Photolysis of Triarylphosphines. CHEM LETT 2013. [DOI: 10.1246/cl.130258] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Shinro Yasui
- Faculty of Contemporary Human Life Science, Tezukayama University
| | | | | | - Masaaki Mishima
- Institute for Materials Chemistry and Engineering, Kyushu University
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21
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Abstract
Thiopurines were examined for their ability to produce singlet oxygen ((1)O(2)) with UVA light. The target compounds were three thiopurine prodrugs, azathioprine (Aza), 6-mercaptopurine (6-MP) and 6-thioguanine (6-TG), and their S-methylated derivatives of 6-methylmercaptopurine (me6-MP) and 6-methylthioguanine (me6-TG). Our results showed that these thiopurines were efficient (1)O(2) sensitizers under UVA irradiation but rapidly lost their photoactivities for (1)O(2) production over time by a self-sensitized photooxidation of sulfur atoms in the presence of oxygen and UVA light. The initial quantum yields of (1)O(2) production were determined to be in the range of 0.30-0.6 in aqueous solutions. Substitution of a hydrogen atom with a nitroimidazole or methyl group at S decreased the efficacy of photosensitized (1)O(2) production as found for Aza, me6-MP and me6-TG. (1)O(2)-induced formation of 8-oxo-7,8-dihydro-2'-dexyguanosine (8-oxodGuo) was assessed by incubation of 6-methylthiopurine/UVA-treated calf thymus DNA with human repair enzyme 8-oxodGuo DNA glycosylase (hOGG1), followed by apurinic (AP) site determination. Because more 8-oxodGuo was formed in Tris D(2)O than in Tris H(2)O, (1)O(2) is implicated as a key species in the reaction. These findings provided quantitative information on the photosensitization efficacy of thiopurines and to some extent revealed the correlations between photoactivity and phototoxicity.
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22
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Zhang Y, Zhu X, Smith J, Haygood MT, Gao R. Direct observation and quantitative characterization of singlet oxygen in aqueous solution upon UVA excitation of 6-thioguanines. J Phys Chem B 2011; 115:1889-94. [PMID: 21294562 DOI: 10.1021/jp109590t] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The incorporation of 6-thioguanine (6-TG) into DNA increases the risk of (1)O(2)-initiated skin cancer. We herein provide the first report on quantitative characterization of the photoactivity of 6-thioguanines including 6-TG and 6-thioguanosine. Time-resolved singlet oxygen luminescence was observed directly for the first time after UVA irradiation of 6-thioguanines in both CHCN(3) and aqueous solutions. Their photosensitization was characterized by the quantum yield of singlet oxygen production, showing a dramatic decrease over time from the initial 0.49-0.58 to zero. Experiments performed on both 6-TG and 6-thioguanosine did not show any significant difference in the quantum yield of singlet oxygen production, indicating that there was no potential participation of 7H- and 9H-tautomers. Our findings provide a primary basis for a better understanding of molecular events of thiopurine drugs in biological systems.
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Affiliation(s)
- Yazhou Zhang
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, Mississippi 39217, USA
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23
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Zhang D, Celaje JA, Agua A, Doan C, Stewart T, Bau R, Selke M. Photooxidation of mixed aryl and biarylphosphines. Org Lett 2010; 12:3100-3. [PMID: 20527907 DOI: 10.1021/ol101122u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Arylphosphines and dialkylbiarylphosphines react with singlet oxygen to form phosphine oxides and phosphinate esters. For mixed arylphosphines, the most electron-rich aryl group migrates to form the phosphinate, while for dialkylbiarylphosphines migration of the alkyl group occurs. Dialkylbiarylphosphines also yield arene epoxides, especially in electron-rich systems. Phosphinate ester formation is increased at high temperature, while protic solvents increase the yield of epoxide. The product distribution provides evidence for Buchwald's recent conformational model for the aerobic oxidation of dialkylbiarylphosphines.
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Affiliation(s)
- Dong Zhang
- Department of Chemistry and Biochemistry, California State University, Los Angeles, California 90032, USA
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24
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Porcel S, Bouhadir G, Saffon N, Maron L, Bourissou D. Reaction of Singlet Dioxygen with Phosphine-Borane Derivatives: From Transient Phosphine Peroxides to Crystalline Peroxoboronates. Angew Chem Int Ed Engl 2010; 49:6186-9. [DOI: 10.1002/anie.201000520] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Reaction of Singlet Dioxygen with Phosphine-Borane Derivatives: From Transient Phosphine Peroxides to Crystalline Peroxoboronates. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000520] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Li W, Gandra N, Ellis ED, Courtney S, Li S, Butler E, Gao R. pH-responsive, TiO2-attached porphyrin for singlet oxygen production in an aqueous solution. ACS APPLIED MATERIALS & INTERFACES 2009; 1:1778-84. [PMID: 20209036 PMCID: PMC2832330 DOI: 10.1021/am9003039] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
A pH-responsive, TiO2-attached sensitizer was prepared based on the adsorption of 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (TCPP) onto TiO2 nanoparticles. This colloidally dispersed TiO2-attached TCPP behaves as a single-phase colloidal sensitizer at pH 1.0-3.3 with quantum yields of singlet oxygen production (Phi(Delta)) between 0.20 and 0.25, as a heterogeneous particle sensitizer at pH 3.5-6.0 with Phi(Delta) between 0.25 and 0.50, and as homogeneous free TCPP molecules in alkaline solutions with Phi(Delta) = 0.53. The changes in Phi(Delta) are fully consistent with pH-dependent adsorption of TCPP onto the TiO2 surface. Recovery yields of 99.8% for TCPP and 98.8% for TiO2 were obtained from 1.4 mM TiO2-attached TCPP. We attribute its photosensitization ability to retaining TCPP solubility on the TiO2 surface and, hence, activity. This novel system shows a potential to bridge the gap between easily recoverable and highly efficient sensitizers.
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Affiliation(s)
- Wenbing Li
- Department of Chemistry, Jackson State University, Jackson, MS 39217
| | - Naveen Gandra
- Department of Chemistry, Jackson State University, Jackson, MS 39217
| | - Erick D. Ellis
- Department of Chemistry, Jackson State University, Jackson, MS 39217
| | - Shavelle Courtney
- Department of Chemistry, Jackson State University, Jackson, MS 39217
| | | | | | - Ruomei Gao
- Department of Chemistry, Jackson State University, Jackson, MS 39217
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27
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Oba M, Okada Y, Nishiyama K, Ando W. Aerobic photooxidation of phosphite esters using diorganotelluride catalysts. Org Lett 2009; 11:1879-81. [PMID: 19341270 DOI: 10.1021/ol900240s] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diorganotellurides containing bulky aromatic substituents are found to catalyze the photooxidation of phosphite esters using aerobic oxygen as a terminal oxidant. A Hammett plot with substituted triaryl phosphites yielding rho = 2.88 agrees with a nucleophilic oxygen transfer from telluroxide to phosphite.
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Affiliation(s)
- Makoto Oba
- Department of Materials Chemistry, Tokai University, 317 Nishino, Numazu, Shizuoka 410-0395, Japan
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28
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Nandi P, Dye JL, Bentley P, Jackson JE. Preparation of Diphenyl Phosphide and Substituted Phosphines using Alkali Metal in Silica Gel (M−SG). Org Lett 2009; 11:1689-92. [DOI: 10.1021/ol900222v] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Partha Nandi
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| | - James L. Dye
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| | - Philip Bentley
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| | - James E. Jackson
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
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29
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Reva I, Lapinski L, Nowak MJ. Photoinduced oxidation of triphenylphosphine isolated in a low-temperature oxygen matrix. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.11.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Zhang D, Gao R, Afzal S, Vargas M, Sharma S, McCurdy A, Yousufuddin M, Stewart T, Bau R, Selke M. Intramolecular arene epoxidation by phosphadioxiranes. Org Lett 2007; 8:5125-8. [PMID: 17048859 DOI: 10.1021/ol0622007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Singlet oxygen reacts with binaphthyl phosphine derivatives such as 1,1'-binaphthyl di-tert-butyl phosphine to form the corresponding binaphthyl-2-oxide phosphine oxides. This new intramolecular arene epoxidation reaction proceeds with complete retention of stereochemistry. The binaphthyl-2-oxide di-tert-butyl phosphine oxide undergoes a slow "NIH-rearrangement" to form the corresponding hydroxylated product. A transient phosphadioxirane intermediate has been directly observed by low-temperature NMR. Kinetic analyses show that all of the phosphadioxirane intermediate is converted to product. [reaction: see text]
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Affiliation(s)
- Dong Zhang
- Department of Chemistry and Biochemistry, California State University-Los Angeles, Los Angeles, CA 90032, USA
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31
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Affiliation(s)
- Nahed Sawwan
- Department of Chemistry, Graduate School and University Center and The City University of New York (CUNY), Brooklyn College, Brooklyn, New York 11210, USA
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32
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Huang YL, Chang CP, Hong FE. Oxygen insertion in a carbon-phosphorus bond of the phenylethynyl-di-(tert-butyl)-phosphine bridged dicobalt complex: exploring the nature of oxygen migration using DFT. Dalton Trans 2006:5454-63. [PMID: 17117215 DOI: 10.1039/b611359a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the process of isolation under aerobic conditions phenylethynyl-di-(tert-butyl)-phosphine bridged dicobalt complex [(micro-PPh(2)CH(2)PPh(2))Co2(CO)4(micro,eta-PhC[triple bond]CP(t-Bu)2)] 4a underwent a partial oxidation. The identity of the oxidized product, [(micro-PPh(2)CH(2)PPh(2))Co2(CO)4(micro,eta-PhC[triple bond]C-O-P([double bond]O)(t-Bu)2)] 5, was established by spectroscopic means as well as the single-crystal X-ray diffraction method. This is the first crystallographic evidence that unambiguously supports the formation of an organometallic version of a phosphinate ester. The mechanism for the formation of 5 from 4a was proposed, and its validity was examined by DFT means. For the purpose of comparison, a similar mechanism illustrating the transformation of PhC[triple bond]CP(t-Bu)2 1O into PhC[triple bond]C-O-P([double bond]O)(t-Bu)2 5O, the organic counterpart of 5, was examined by the same method. It was found that the metal fragment is indeed capable of assisting the oxidation process by lowering the activation energy, although the effect is small. The impact of the presence of an electron-withdrawing substituent such as a fluorine atom in the alkynylphosphine was also investigated. Results demonstrated that the conversion of fluorine-substituted phosphines to the corresponding phosphinate esters can be achieved more readily. In addition, the energy barrier for the reaction of a phosphine with dioxygen yielding the phosphine oxide was calculated to be much lower than that on the way to the phosphinate ester.
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Affiliation(s)
- Yi-Luen Huang
- Department of Chemistry, National Chung Hsing University, Taichung, 40227, Taiwan
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33
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Gandra N, Frank AT, Le Gendre O, Sawwan N, Aebisher D, Liebman JF, Houk K, Greer A, Gao R. Possible singlet oxygen generation from the photolysis of indigo dyes in methanol, DMSO, water, and ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.08.095] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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34
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35
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36
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Ho DG, Gao R, Celaje J, Chung HY, Selke M. Phosphadioxirane: A Peroxide from an Ortho-Substituted Arylphosphine and Singlet Dioxygen. Science 2003; 302:259-62. [PMID: 14551430 DOI: 10.1126/science.1089145] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
We prepared the primary adduct for the reaction of singlet dioxygen (1O2) with an arylphosphine by using the sterically hindered arylphosphine tris(o-methoxyphenyl)phosphine. The resulting phosphadioxirane has a dioxygen molecule triangularly bound to the phosphorus atom. Olefin trapping experiments show that the phosphadioxirane can undergo nonradical oxygen atom-transfer reactions. Under protic conditions, two different intermediates are formed during the reaction of singlet dioxygen with tris(o-methoxyphenyl)phosphine, namely, the corresponding hydroperoxy arylphosphine and a hydroxy phosphorane. Experiments with other arylphosphines possessing different electronic and steric properties demonstrate that the relative stability of the tris(o-methoxyphenyl)phosphadioxirane is due to both steric and electronic effects.
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Affiliation(s)
- David G Ho
- Department of Chemistry and Biochemistry, California State University, Los Angeles, Los Angeles, CA 90032, USA
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