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Gallo-Rodriguez C, Rodriguez JB. Organoselenium Compounds in Medicinal Chemistry. ChemMedChem 2024; 19:e202400063. [PMID: 38778500 DOI: 10.1002/cmdc.202400063] [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: 01/19/2024] [Revised: 05/09/2024] [Accepted: 05/22/2024] [Indexed: 05/25/2024]
Abstract
The chemical and biological interest in this element and the molecules bearing selenium has been exponentially growing over the years. Selenium, formerly designated as a toxin, becomes a vital trace element for life that appears as selenocysteine and its dimeric form, selenocystine, in the active sites of selenoproteins, which catalyze a wide variety of reactions, including the detoxification of reactive oxygen species and modulation of redox activities. From the point of view of drug developments, organoselenium drugs are isosteres of sulfur-containing and oxygen-containing drugs with the advantage that the presence of the selenium atom confers antioxidant properties and high lipophilicity, which would increase cell membrane permeation leading to better oral bioavailability. This statement is the paramount relevance considering the big number of clinically employed compounds bearing sulfur or oxygen atoms in their structures including nucleosides and carbohydrates. Thus, in this article we have focused on the relevant features of the application of selenium in medicinal chemistry. With the increasing interest in selenium chemistry, we have attempted to highlight the most significant published data on this subject, mainly concentrating the analysis on the last years. In consequence, the recent advances of relevant pharmacological organoselenium compounds are discussed.
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Affiliation(s)
- Carola Gallo-Rodriguez
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EHA, Buenos Aires, Argentina
| | - Juan B Rodriguez
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos, Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EHA, Buenos Aires, Argentina
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2
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Song J, Hou N, Liu X, Bi G, Wang Y, Mu Y. Directional Formation of Reactive Oxygen Species Via a Non-Redox Catalysis Strategy That Bypasses Electron Transfer Process. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2405832. [PMID: 38759109 DOI: 10.1002/adma.202405832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Indexed: 05/19/2024]
Abstract
A broad range of chemical transformations driven by catalytic processes necessitates the electron transfer between catalyst and substrate. The redox cycle limitation arising from the inequivalent electron donation and acceptance of the involved catalysts, however, generally leads to their deactivation, causing substantial economic losses and environmental risks. Here, a "non-redox catalysis" strategy is provided, wherein the catalytic units are constructed by atomic Fe and B as dual active sites to create tensile force and electric field, which allows directional self-decomposition of peroxymonosulfate (PMS) molecules through internal electron transfer to form singlet oxygen, bypassing the need of electron transfer between catalyst and PMS. The proposed catalytic approach with non-redox cycling of catalyst contributes to excellent stability of the active centers while the generated reactive oxygen species find high efficiency in long-term catalytic pollutant degradation and selective organic oxidation synthesis in aqueous phase. This work offers a new avenue for directional substrate conversion, which holds promise to advance the design of alternative catalytic pathways for sustainable energy conversion and valuable chemical production.
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Affiliation(s)
- Junsheng Song
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, P. R. China
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Nannan Hou
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, P. R. China
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Xiaocheng Liu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, P. R. China
| | - Guangyu Bi
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, P. R. China
| | - Yang Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, P. R. China
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Yang Mu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, P. R. China
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3
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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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4
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Lapoot L, Jabeen S, Durantini AM, Greer A. Role of curvature in acridone for 1 O 2 oxidation of a natural product homoallylic alcohol: A novel iso-hydroperoxide intermediate. Photochem Photobiol 2024; 100:455-464. [PMID: 37602967 DOI: 10.1111/php.13843] [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: 06/05/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 08/22/2023]
Abstract
A density functional theoretical (DFT) study is presented, implicating a 1 O2 oxidation process to reach a dihydrobenzofuran from the reaction of the natural homoallylic alcohol, glycocitrine. Our results predict an interconversion between glycocitrine and an iso-hydroperoxide intermediate [R(H)O+ -O- ] that provides a key path in the chemistry which then follows. Formations of allylic hydroperoxides are unlikely from a 1 O2 'ene' reaction. Instead, the dihydrobenzofuran arises by 1 O2 oxidation facilitated by a 16° curvature of the glycocitrine ring imposed by a pyramidal N-methyl group. This curvature facilitates the formation of the iso-hydroperoxide, which is analogous to the iso species CH2 I+ -I- and CHI2 + -I- formed by UV photolysis of CH2 I2 and CHI3 . The iso-hydroperoxide is also structurally reminiscent of carbonyl oxides (R2 C=O+ -O- ) formed in the reaction of carbenes and oxygen. Our DFT results point to intermolecular process, in which the iso-hydroperoxide's fate relates to O-transfer and H2 O dehydration reactions for new insight into the biosynthesis of dihydrobenzofuran natural products.
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Affiliation(s)
- Lloyd Lapoot
- Department of Chemistry, Brooklyn College, City University of New York, Brooklyn, New York, USA
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York, New York, USA
| | - Shakeela Jabeen
- Department of Chemistry, Brooklyn College, City University of New York, Brooklyn, New York, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York, USA
| | - Andrés M Durantini
- Department of Chemistry, Brooklyn College, City University of New York, Brooklyn, New York, USA
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - Alexander Greer
- Department of Chemistry, Brooklyn College, City University of New York, Brooklyn, New York, USA
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York, New York, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York, USA
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5
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Sonego JM, de Diego SI, Szajnman SH, Gallo-Rodriguez C, Rodriguez JB. Organoselenium Compounds: Chemistry and Applications in Organic Synthesis. Chemistry 2023; 29:e202300030. [PMID: 37378970 DOI: 10.1002/chem.202300030] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 06/18/2023] [Accepted: 06/28/2023] [Indexed: 06/29/2023]
Abstract
Selenium, originally described as a toxin, turns out to be a crucial trace element for life that appears as selenocysteine and its dimer, selenocystine. From the point of view of drug developments, selenium-containing drugs are isosteres of sulfur and oxygen with the advantage that the presence of the selenium atom confers antioxidant properties and high lipophilicity, which would increase cell membrane permeation leading to better oral bioavailability. In this article, we have focused on the relevant features of the selenium atom, above all, the corresponding synthetic approaches to access a variety of organoselenium molecules along with the proposed reaction mechanisms. The preparation and biological properties of selenosugars, including selenoglycosides, selenonucleosides, selenopeptides, and other selenium-containing compounds will be treated. We have attempted to condense the most important aspects and interesting examples of the chemistry of selenium into a single article.
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Affiliation(s)
- Juan M Sonego
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Sheila I de Diego
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Sergio H Szajnman
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Carola Gallo-Rodriguez
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EHA, Buenos Aires, Argentina
| | - Juan B Rodriguez
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
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6
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Safiullin RL, Teregulova AN, Yarullin AR, Ovchinnikov MY, Khursan SL. para-Substituent Effect on the Decay Kinetics of the Isomeric Forms of Aromatic Nitroso Oxides. KINETICS AND CATALYSIS 2022. [DOI: 10.1134/s0023158422020082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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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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Monsour CG, Decosto CM, Tafolla-Aguirre BJ, Morales LA, Selke M. Singlet Oxygen Generation, Quenching, and Reactivity with Metal Thiolates. Photochem Photobiol 2021; 97:1219-1240. [PMID: 34242405 DOI: 10.1111/php.13487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/08/2021] [Indexed: 11/28/2022]
Abstract
Metal thiolate complexes can act as photosensitizers for the generation of singlet oxygen, quenchers of singlet oxygen, and they may undergo chemical reactions with singlet oxygen leading to oxidized thiolate ligands. This review covers all of the chemical reactions of thiolate ligands with singlet oxygen (through early 2021). Since some of these reactions are self-sensitized photooxidations, singlet oxygen generation by metal complexes is also discussed. Mechanistic features such as the effects of protic vs. aprotic conditions are presented and compared with the comparatively well-understood photooxidation of organic sulfides. In general, the total rate of singlet oxygen removal correlates with the nucleophilicity of the thiolate ligand which in turn can be influenced by the metal. Some interesting patterns of reactivity have been noted as a result of this survey: Metal thiolate complexes bearing arylthiolate ligands appear to exclusively produce sulfinate (metal-bound sulfone) products upon reaction with singlet oxygen. In contrast, metal thiolate complexes bearing alkylthiolate ligands may produce sulfinate and/or sulfenate (metal-bound sulfoxide) products. Several mechanistic pathways have been proposed for these reactions, but the exact nature of any intermediates remains unknown at this time.
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Affiliation(s)
- Charlotte G Monsour
- Department of Chemistry and Biochemistry, California State University, Los Angeles
| | - Cassandra M Decosto
- Department of Chemistry and Biochemistry, California State University, Los Angeles
| | | | - Luis A Morales
- Department of Chemistry and Biochemistry, California State University, Los Angeles
| | - Matthias Selke
- Department of Chemistry and Biochemistry, California State University, Los Angeles
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Formation of 1,2,4-oxadiazoles in the course of photooxidation of aromatic azides in acetonitrile. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.03.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Wang D, Pernik I, Keaveney ST, Messerle BA. Understanding the Synergistic Effects Observed When Using Tethered Dual Catalysts for Heat and Light Activated Catalysis. ChemCatChem 2020. [DOI: 10.1002/cctc.202000969] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Danfeng Wang
- Department of Molecular Sciences Macquarie University North Ryde NSW, 2019 Australia
| | - Indrek Pernik
- Department of Molecular Sciences Macquarie University North Ryde NSW, 2019 Australia
- Current Address: School of Chemistry University of Sydney Sydney NSW, 2006 Australia
| | - Sinead T. Keaveney
- Department of Molecular Sciences Macquarie University North Ryde NSW, 2019 Australia
| | - Barbara A. Messerle
- Department of Molecular Sciences Macquarie University North Ryde NSW, 2019 Australia
- Current Address: School of Chemistry University of Sydney Sydney NSW, 2006 Australia
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11
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Bhagat V, Schumann J, Bettinger HF. Unusual Nitrene Oxidation Product Formation by Metathesis Involving the Dioxygen O-O and Borylnitrene B-N Bonds. Chemistry 2020; 26:12654-12663. [PMID: 32902001 PMCID: PMC7590100 DOI: 10.1002/chem.202002445] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/11/2020] [Indexed: 01/08/2023]
Abstract
The reaction of dioxygen with nitrenes can have significant energy barriers, although both reactants are triplet diradicals and the formation of nitroso-O-oxides is spin-allowed. By means of matrix-isolation infrared spectroscopy in solid argon, nitrogen, and neon, and through high-level computational quantum chemistry, it is shown herein that a 3-nitreno-1,3,2-benzodioxaborole CatBN (Cat=catecholato) reacts with dioxygen under cryogenic conditions thermally at temperatures as low as 7 K to produce two distinct products, an anti-nitroso-O-oxide and a nitritoborane CatBONO. The computed barriers for the formation of nitroso-O-oxide isomers are very low. Whereas anti-nitroso-O-oxide is kinetically trapped, its bisected isomer has a very low barrier for metathesis, yielding the CatBO+NO radicals in a strongly exothermic reaction; these radicals can combine under matrix-isolation conditions to give nitritoborane CatBONO. The trapped isomer, anti-nitroso-O-oxide, can form the nitritoborane CatBONO only after photoexcitation, possibly involving isomerization to the bisected isomer of anti-nitroso-O-oxide.
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Affiliation(s)
- Virinder Bhagat
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Julia Schumann
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Holger F. Bettinger
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
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12
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Chainikova EM, Khursan SL, Yusupova AR, Teregulova AN, Abdullin MF, Lobov AN, Safiullin RL. Ortho-Cyclization in Asymmetrically Substituted Arylnitroso Oxides. J Org Chem 2020; 85:10813-10822. [PMID: 32692173 DOI: 10.1021/acs.joc.0c01314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanism of the photooxidation of a number of asymmetrically substituted phenyl azides in acetonitrile was studied. The key intermediates of this reaction are the corresponding nitroso oxides, the unimolecular consumption of which occurs via the cis form when the terminal oxygen atom of the NOO moiety reacts with the ortho position of the aromatic ring. As a result, it is opened to form a nitrile oxide. In the case of 3-methylphenyl azide, the reaction proceeds via the cis/syn form of nitroso oxide with a regioselectivity of 91%. The methoxy substituent at the para position changes the direction of the ortho-cyclization so that it occurs via the cis/anti form of nitroso oxide independently on the nature of a meta substituent. Nitrile oxides, which are formed as a result of these transformations of nitroso oxides, are stabilized by [3 + 2] cycloaddition with acetonitrile to give 1,2,4-oxadiazoles. The observed regioselectivity of the ortho-cyclization of nitroso oxides was explained using theoretical methods. Its cause consists in the extra-stabilization of the transition state of the reaction of the cis/anti form due to a stereoelectronic effect of the para-methoxy substituent.
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Affiliation(s)
- Ekaterina M Chainikova
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Sergey L Khursan
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Alfia R Yusupova
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Aigul N Teregulova
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Marat F Abdullin
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Alexander N Lobov
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Rustam L Safiullin
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa 450054, Russian Federation
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13
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Ghosh G, Greer A. A fluorinated phosphite traps alkoxy radicals photogenerated at the air/solid interface of a nanoparticle. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Goutam Ghosh
- Department of Chemistry Brooklyn College Brooklyn New York USA
- Ph.D. Program in Chemistry The Graduate Center of the City University of New York New York New York USA
| | - Alexander Greer
- Department of Chemistry Brooklyn College Brooklyn New York USA
- Ph.D. Program in Chemistry The Graduate Center of the City University of New York New York New York USA
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14
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Yarullin AR, Ovchinnikov MY, Khursan SL, Chainikova EM, Safiullin RL. The substituent effects on the [3+2] cycloaddition of nitrile oxides generated by photooxidation of arylazides to acetonitrile. J Mol Graph Model 2019; 95:107491. [PMID: 31757588 DOI: 10.1016/j.jmgm.2019.107491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/17/2019] [Accepted: 11/12/2019] [Indexed: 11/16/2022]
Abstract
The DFT approach in M06L/6-311 + G(d,p) approximation was used to study the transformation of unsaturated nitrile oxides (RCNO), which were generated by photooxidation of the corresponding aromatic azide, to oxadiazoles via [3 + 2]cyclization with acetonitrile. It was found that the cycloaddition activation enthalpy was within 60-93 kJ/mol, depending on the structure of the nitrile oxide. A significant mesomeric effect of the substituent and its position in the conjugated molecular system on the activation barrier of the reaction studied was identified. The relationship between the thermodynamic characteristics of [3 + 2] cycloaddition and electron density distribution in RCNO was demonstrated by a representative set of compounds including mono- and disubstituted nitrile oxides.
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Affiliation(s)
- Aidar R Yarullin
- Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa Federal Scientific Center, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation
| | - Mikhail Yu Ovchinnikov
- Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa Federal Scientific Center, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation
| | - Sergey L Khursan
- Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa Federal Scientific Center, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation.
| | - Ekaterina M Chainikova
- Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa Federal Scientific Center, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation
| | - Rustam L Safiullin
- Ufa Institute of Chemistry of the Russian Academy of Sciences, Ufa Federal Scientific Center, 71 prosp. Oktyabrya, 450054, Ufa, Russian Federation
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15
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Fischer J, Mele L, Serier-Brault H, Nun P, Coeffard V. Controlling Photooxygenation with a Bifunctional Quinine-BODIPY Catalyst: towards Asymmetric Hydroxylation of β-Dicarbonyl Compounds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900984] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jérôme Fischer
- Université de Nantes; CEISAM UMR CNRS 6230; 44000 Nantes France
| | - Lucas Mele
- Université de Nantes; CEISAM UMR CNRS 6230; 44000 Nantes France
| | - Hélène Serier-Brault
- Institut des Matériaux Jean Rouxel; Université de Nantes; CNRS; 2 rue de la Houssinière, BP 32229 44322 Nantes France
| | - Pierrick Nun
- Université de Nantes; CEISAM UMR CNRS 6230; 44000 Nantes France
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16
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Péault L, Nun P, Le Grognec E, Coeffard V. Multicatalytic dearomatization of phenols into epoxyquinols via a photooxygenation process. Chem Commun (Camb) 2019; 55:7398-7401. [PMID: 31180096 DOI: 10.1039/c9cc03068a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A multicatalytic photooxygenation of substituted phenols in the presence of rose bengal and cesium carbonate under green LED light is reported. This transformation enabled the introduction of both atoms of singlet oxygen and led to the one-pot synthesis of epoxyquinols in a stereoselective way.
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Affiliation(s)
- Louis Péault
- University of Nantes, CNRS, CEISAM UMR CNRS 6230, F-44000, Nantes, France.
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17
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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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18
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Greer EM, Kwon K. Density Functional Theory and
ab Initio
Computational Evidence for Nitrosamine Photoperoxides: Hammett Substituent Effects in the Photogeneration of the Nitrooxide Intermediate. Photochem Photobiol 2018; 94:975-984. [DOI: 10.1111/php.12941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/15/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Edyta M. Greer
- Department of Natural Sciences Baruch College City University of New York New York NY
| | - Kitae Kwon
- Department of Natural Sciences Baruch College City University of New York New York NY
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19
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Mauger A, Farjon J, Nun P, Coeffard V. One-Pot Synthesis of Functionalized Fused Furans via a BODIPY-Catalyzed Domino Photooxygenation. Chemistry 2018; 24:4790-4793. [DOI: 10.1002/chem.201706087] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Audrey Mauger
- Université de Nantes; CNRS; Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM); UMR CNRS 6230; Faculté des Sciences et des Techniques; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Jonathan Farjon
- Université de Nantes; CNRS; Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM); UMR CNRS 6230; Faculté des Sciences et des Techniques; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Pierrick Nun
- Université de Nantes; CNRS; Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM); UMR CNRS 6230; Faculté des Sciences et des Techniques; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Vincent Coeffard
- Université de Nantes; CNRS; Chimie Et Interdisciplinarité: Synthèse, Analyse et Modélisation (CEISAM); UMR CNRS 6230; Faculté des Sciences et des Techniques; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
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20
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Wu Z, Lu B, Feng R, Xu J, Lu Y, Wan H, Eckhardt AK, Schreiner PR, Xie C, Guo H, Zeng X. Capture of SO3isomers in the oxidation of sulfur monoxide with molecular oxygen. Chem Commun (Camb) 2018; 54:1690-1693. [DOI: 10.1039/c7cc09389f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two SO3isomers,cis-OSOO and cyclic OS(O)O, were formed in the oxidation of SO and trapped in cryogenic matrices for spectroscopic characterization.
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21
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Ye J, Wu J, Lv T, Wu G, Gao Y, Chen H. Oxidative Rearrangement Coupling Reaction for the Functionalization of Tetrahydro-β-carbolines with Aromatic Amines. Angew Chem Int Ed Engl 2017; 56:14968-14972. [PMID: 28961354 DOI: 10.1002/anie.201708893] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Indexed: 02/05/2023]
Abstract
The observation of an unexpected oxidative rearrangement coupling reaction led to the development of a novel method for the efficient functionalization of tetrahydro-β-carbolines (THβCs). The treatment of THβCs with photogenerated singlet oxygen (1 O2 ) afforded unstable dioxetanes, which underwent further transformation to form new bonds in the presence of trifluoroacetic acid. This operationally simple protocol exhibits broad functional-group tolerance and is suitable for the late-stage functionalization of complex druglike molecules.
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Affiliation(s)
- Jinxiang Ye
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Jianlei Wu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Tingting Lv
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Guolin Wu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Yu Gao
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Haijun Chen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
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22
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Ye J, Wu J, Lv T, Wu G, Gao Y, Chen H. Oxidative Rearrangement Coupling Reaction for the Functionalization of Tetrahydro-β-carbolines with Aromatic Amines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708893] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jinxiang Ye
- College of Chemistry; Fuzhou University; Fuzhou Fujian 350116 China
| | - Jianlei Wu
- College of Chemistry; Fuzhou University; Fuzhou Fujian 350116 China
| | - Tingting Lv
- College of Chemistry; Fuzhou University; Fuzhou Fujian 350116 China
| | - Guolin Wu
- College of Chemistry; Fuzhou University; Fuzhou Fujian 350116 China
| | - Yu Gao
- College of Chemistry; Fuzhou University; Fuzhou Fujian 350116 China
| | - Haijun Chen
- College of Chemistry; Fuzhou University; Fuzhou Fujian 350116 China
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23
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Chainikova EM, Yusupova AR, Khursan SL, Teregulova AN, Lobov AN, Abdullin MF, Enikeeva LV, Gubaydullin IM, Safiullin RL. Interplay of Conformational and Chemical Transformations of Ortho-Substituted Aromatic Nitroso Oxides: Experimental and Theoretical Study. J Org Chem 2017; 82:7750-7763. [PMID: 28695737 DOI: 10.1021/acs.joc.7b00537] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanism of the photooxidation of aromatic azides containing a substituent at one of the ortho positions (2,4-dimethoxyphenyl azide (1a) and 2-methyl-4-[(2E)-1-methylbut-2-en-1-yl]phenyl azide (1b)) was studied in acetonitrile. The electronic spectra and the kinetic regularities of the consumption of corresponding nitroso oxides, which are the reaction intermediates, were investigated by flash photolysis. Owing to the one-and-a-half order of the C-N and N-O bonds and asymmetric molecule structure these nitroso oxides exist as four conformers (cis/syn, cis/anti, trans/syn, and trans/anti). The conformers differ in the spectral properties and in the reactivity in various irreversible transformations. The only product, (2Z,4E)-4-methoxy-6-oxohepta-2,4-dienenitrile oxide (7a), was observed during photooxidation of 1a, whereas transformations of the nitroso oxide isomers derived from 1b led to a set of stable products: the cis/anti isomer was transformed into (3,4,7-trimethyl-3a,4-dihydro-2,1-benzisoxazol-5(3H)-ylidene)ethanal (10), the trans isomers recombined forming the corresponding nitro and nitroso compounds, and the most reactive cis/syn isomer was transformed into ortho-nitrosobenzyl alcohol 11. The last was oxidized slowly to the corresponding benzaldehyde 12. Interaction of 11 and 12 led to the formation of (Z)-1,2-bis(2-formyl-4-((2E)-1-methylbut-2-en-1-yl)phenyl)diazene-1-oxide (13). The DFT simulation and kinetic modeling of the nitroso oxide transformations as well as the product analysis allowed revealing the fine details of the mechanism of decay for these species.
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Affiliation(s)
- Ekaterina M Chainikova
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Alfia R Yusupova
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Sergey L Khursan
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Aigul N Teregulova
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Alexander N Lobov
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Marat F Abdullin
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Leniza V Enikeeva
- Ufa State Petroleum Technological University , 1 Kosmonavtov Street, Ufa 450062, Russian Federation
| | - Irek M Gubaydullin
- Ufa State Petroleum Technological University , 1 Kosmonavtov Street, Ufa 450062, Russian Federation
| | - Rustam L Safiullin
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
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24
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Ghogare AA, Debaz CJ, Silva Oliveira M, Abramova I, Mohapatra PP, Kwon K, Greer EM, Prado FM, Valerio HP, Di Mascio P, Greer A. Experimental and DFT Computational Insight into Nitrosamine Photochemistry—Oxygen Matters. J Phys Chem A 2017; 121:5954-5966. [DOI: 10.1021/acs.jpca.7b02414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ashwini A. Ghogare
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Ciro J. Debaz
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
| | - Marilene Silva Oliveira
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP, 05508-000 São Paulo, Brazil
| | - Inna Abramova
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
| | - Prabhu P. Mohapatra
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
| | - Kitae Kwon
- Department
of Natural Sciences, Baruch College, City University of New York, New York 10010, United States
| | - Edyta M. Greer
- Department
of Natural Sciences, Baruch College, City University of New York, New York 10010, United States
| | - Fernanda Manso Prado
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP, 05508-000 São Paulo, Brazil
| | - Hellen Paula Valerio
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP, 05508-000 São Paulo, Brazil
| | - Paolo Di Mascio
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP, 05508-000 São Paulo, Brazil
| | - Alexander Greer
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
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25
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Yusupova AR, Safiullin RL, Khursan SL. Conformational Transformations in Aromatic Nitroso Oxides. J Phys Chem A 2016; 120:5693-705. [PMID: 27356269 DOI: 10.1021/acs.jpca.6b04282] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A systematic theoretical study on conformational transformations of monosubstituted (ortho- and para-) aromatic nitroso oxides R-C6H4NOO was performed. The existence of two rotation axes enables two types of conformational transitions in substituted arylnitroso oxides: trans/cis (rotation around the N-O bond) and syn/anti (rotation around the C-N bond, which is important in ortho isomers). The complete set of conformers was localized for R-C6H4NOO using four selected density functional (M06-L, mPWPW91, OLYP, and HCTH) and augmented polarization basis set of triple splitting. It was found that the activation enthalpy of the trans-cis conformational transition is nearly insensitive to the nature of R and ranges within 58-60 kJ/mol for para isomers. The ortho substituent has an insignificant effect on ΔH(≠)trans→cis: it increases this value by ∼5 kJ/mol in syn isomers and decreases it by ∼3 kJ/mol in anti isomers. On the contrary, the syn-anti conformational barrier is considerably affected by the substituent R; an increase in the electron-withdrawing properties of R decreases ΔH(≠)syn→anti. The activation enthalpies grow with increasing polarity of the solvent, as it was found using IEFPCM calculation. The values of relaxation time for all conformational equilibria were calculated and compared with known lifetimes of aromatic nitroso oxides. Our results suggest that syn/anti transitions occur fast enough in the scale of the experimental lifetime. However, trans/cis transformations proceed more slowly. And under certain conditions discussed in the paper, the rate of this conformational transition limits that of irreversible decay of nitroso oxide.
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Affiliation(s)
- Alfia R Yusupova
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Rustam L Safiullin
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
| | - Sergey L Khursan
- Ufa Institute of Chemistry of the Russian Academy of Sciences , 71 pr. Oktyabrya, Ufa 450054, Russian Federation
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26
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Klose I, Misale A, Maulide N. Synthesis and Photocatalytic Reactivity of Vinylsulfonium Ylides. J Org Chem 2016; 81:7201-10. [PMID: 27398692 DOI: 10.1021/acs.joc.6b01073] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Although sulfur ylides are textbook reagents in organic synthesis, surprisingly little variation of substituents on sulfur is usually observed. In particular, vinylsulfonium ylides have been neglected so far. Herein, we present a study on their synthesis and reactivity, including interesting behavior under photocatalytic conditions.
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Affiliation(s)
- Immo Klose
- Institute of Organic Chemistry, University of Vienna , Währinger Strasse 38, 1090 Vienna, Austria
| | - Antonio Misale
- Institute of Organic Chemistry, University of Vienna , Währinger Strasse 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna , Währinger Strasse 38, 1090 Vienna, Austria
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27
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Arzumanyan AV, Terent’ev AO, Novikov RA, Lakhtin VG, Grigoriev MS, Nikishin GI. Reduction of Organosilicon Peroxides: Ring Contraction and Cyclodimerization. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00129] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ashot V. Arzumanyan
- N.D.
Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
- A.
N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova ul, Moscow 119991, Russian Federation
| | - Alexander O. Terent’ev
- N.D.
Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Roman A. Novikov
- N.D.
Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Valentin G. Lakhtin
- State Scientific Research Institute of Chemistry and Technology of Organoelement Compounds, 38 Shosse
Entuziastov, 111123 Moscow, Russian Federation
| | - Michail S. Grigoriev
- A.
N. Frumkin Institute of Physical Chemistry and Electrochemistry, Radiochemistry
Department, Russian Academy of Sciences, 40 Obruchev st., 117342 Moscow, Russian Federation
| | - Gennady I. Nikishin
- N.D.
Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
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28
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Affiliation(s)
- Ashwini A. Ghogare
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Alexander Greer
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
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29
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He FF, Ding YH. Global picture of isomerization and dissociation of CN 2O 2: new metastable isomers. RSC Adv 2016. [DOI: 10.1039/c5ra27576h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A comprehensive potential energy surface of CN2O2, covering 15 new isomers and 30 new transition states was constructed to predict three new observable isomers 14, 22 and 29.
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Affiliation(s)
- Fei-fei He
- Institute of Theoretical and Computational Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
| | - Yi-hong Ding
- Institute of Theoretical and Computational Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
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30
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Cui H, Zhang J, Tao Y, Cui C. Controlled Oxidation of an NHC-Stabilized Phosphinoaminosilylene with Dioxygen. Inorg Chem 2015; 55:46-50. [DOI: 10.1021/acs.inorgchem.5b02580] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haiyan Cui
- Jiangsu
Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, People’s Republic of China
| | - Jianying Zhang
- State
Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yunwen Tao
- Department
of Chemistry, Southern Methodist University, 3215 Daniel Avenue, Dallas, Texas 75275-0314, United States
| | - Chunming Cui
- State
Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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31
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Chainikova E, Khursan S, Lobov A, Erastov A, Khalilov L, Mescheryakova E, Safiullin R. 4-N,N-Dimethylaminophenyl azide photooxidation: effect of conditions on the reaction pathway. Ring contraction of benzene to cyclopentadiene due to a strongly electron-donating substituent. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.06.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Oliveira MS, Ghogare AA, Abramova I, Greer EM, Prado FM, Di Mascio P, Greer A. Mechanism of Photochemical O-Atom Exchange in Nitrosamines with Molecular Oxygen. J Org Chem 2015; 80:6119-27. [PMID: 26000876 DOI: 10.1021/acs.joc.5b00633] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The detection of an oxygen-atom photoexchange process of N-nitrosamines is reported. The photolysis of four nitrosamines (N-nitrosodiphenylamine 1, N-nitroso-N-methylaniline 2, N-butyl-N-(4-hydroxybutyl)nitrosamine 3, and N-nitrosodiethylamine 4) with ultraviolet light was examined in an (18)O2-enriched atmosphere in solution. HPLC/MS and HPLC-MS/MS data show that (18)O-labeled nitrosamines were generated for 1 and 2. In contrast, nitrosamines 3 and 4 do not exchange the (18)O label and instead decomposed to amines and/or imines under the conditions. For 1 and 2, the (18)O atom was found not to be introduced by moisture or by singlet oxygen [(18)((1)O2 (1)Δg)] produced thermally by (18)O-(18)O labeled endoperoxide of N,N'-di(2,3-hydroxypropyl)-1,4-naphthalene dipropanamide (DHPN(18)O2) or by visible-light sensitization. A density functional theory study of the structures and energetics of peroxy intermediates arising from reaction of nitrosamines with O2 is also presented. A reversible head-to-tail dimerization of the O-nitrooxide to the 1,2,3,5,6,7-hexaoxadiazocane (30 kcal/mol barrier) with extrusion of O═(18)O accounts for exchange of the oxygen atom label. The unimolecular cyclization of O-nitrooxide to 1,2,3,4-trioxazetidine (46 kcal/mol barrier) followed by a retro [2 + 2] reaction is an alternative, but higher energy process. Both pathways would require the photoexcitation of the nitrooxide.
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Affiliation(s)
- Marilene Silva Oliveira
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil.,‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Ashwini A Ghogare
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Inna Abramova
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Edyta M Greer
- §Department of Natural Sciences, Baruch College, City University of New York, New York, New York 10010, United States
| | - Fernanda Manso Prado
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil
| | - Paolo Di Mascio
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil
| | - Alexander Greer
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
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33
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Vent-Schmidt T, Goettel JT, Schrobilgen GJ, Riedel S. Ultraviolet Photolysis Studies on XeO4in Noble-Gas and F2Matrices and the Formation and Characterization of a New XeVIIIOxide, (η2-O2)XeO3. Chemistry 2015; 21:11244-52. [DOI: 10.1002/chem.201500964] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Indexed: 11/06/2022]
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34
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A simple one-pot preparation of 3,3a-dihydro-5H-pyrano[3,3a-c]isoxazol-5-ylideneethanal from 4-vinyloxyphenyl azide: an example of aromatic azide photooxidation for the synthesis of nitrogen-containing heterocyclic compounds. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Romieu A. “AND” luminescent “reactive” molecular logic gates: a gateway to multi-analyte bioimaging and biosensing. Org Biomol Chem 2015; 13:1294-306. [DOI: 10.1039/c4ob02076f] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This feature article focuses on the recent development of “AND” luminescent molecular logic gates, in which the optical output is produced in response to multiple (bio)chemical inputs and through cascades of covalent bond-modifying reactions triggered by target (bio)analytes, for biosensing and bioimaging applications in complex media.
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Affiliation(s)
- Anthony Romieu
- Institut de Chimie Moléculaire de l'Université de Bourgogne
- UMR CNRS 6302
- Université de Bourgogne
- 21078 Dijon
- France
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36
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Arzumanyan AV, Terent'ev AO, Novikov RA, Lakhtin VG, Chernyshev VV, Fitch AN, Nikishin GI. Six Peroxide Groups in One Molecule - Synthesis of Nine-Membered Bicyclic Silyl Peroxides. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402895] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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37
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Arzumanyan AV, Novikov RA, Terent’ev AO, Platonov MM, Lakhtin VG, Arkhipov DE, Korlyukov AA, Chernyshev VV, Fitch AN, Zdvizhkov AT, Krylov IB, Tomilov YV, Nikishin GI. Nature Chooses Rings: Synthesis of Silicon-Containing Macrocyclic Peroxides. Organometallics 2014. [DOI: 10.1021/om500095x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ashot V. Arzumanyan
- N. D. Zelinsky Institute
of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky
prosp., 119991 Moscow, Russian Federation
| | - Roman A. Novikov
- N. D. Zelinsky Institute
of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky
prosp., 119991 Moscow, Russian Federation
| | - Alexander O. Terent’ev
- N. D. Zelinsky Institute
of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky
prosp., 119991 Moscow, Russian Federation
| | - Maxim M. Platonov
- N. D. Zelinsky Institute
of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky
prosp., 119991 Moscow, Russian Federation
| | - Valentin G. Lakhtin
- State Research Institute for Chemistry and Technology of Organoelement Compounds, 38 shosse Entuziastov, Moscow 111123 Russian Federation
| | - Dmitry E. Arkhipov
- A. N. Nesmeyanov
Institute of Organoelement
Compounds, Russian Academy of Sciences, 28 Vavilova ul, Moscow 119991 Russian Federation
- Pirogov Russian National Research Medical University, Ostrovitianov str. 1, Moscow 117997 Russian Federation
| | - Alexander A. Korlyukov
- A. N. Nesmeyanov
Institute of Organoelement
Compounds, Russian Academy of Sciences, 28 Vavilova ul, Moscow 119991 Russian Federation
- Pirogov Russian National Research Medical University, Ostrovitianov str. 1, Moscow 117997 Russian Federation
| | - Vladimir V. Chernyshev
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1-3 Leninskie Gory, Moscow 119991 Russian Federation
- A. N. Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, 31 Leninsky
prospect, Moscow 119071 Russian Federation
| | - Andrew N. Fitch
- European Synchrotron Radiation Facility, B.P.
220, 38043 Grenoble Cedex, France
| | - Alexander T. Zdvizhkov
- N. D. Zelinsky Institute
of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky
prosp., 119991 Moscow, Russian Federation
| | - Igor B. Krylov
- N. D. Zelinsky Institute
of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky
prosp., 119991 Moscow, Russian Federation
| | - Yury V. Tomilov
- N. D. Zelinsky Institute
of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky
prosp., 119991 Moscow, Russian Federation
| | - Gennady I. Nikishin
- N. D. Zelinsky Institute
of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky
prosp., 119991 Moscow, Russian Federation
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38
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Terent'ev AO, Borisov DA, Vil’ VA, Dembitsky VM. Synthesis of five- and six-membered cyclic organic peroxides: Key transformations into peroxide ring-retaining products. Beilstein J Org Chem 2014; 10:34-114. [PMID: 24454562 PMCID: PMC3896255 DOI: 10.3762/bjoc.10.6] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 11/16/2013] [Indexed: 12/16/2022] Open
Abstract
The present review describes the current status of synthetic five and six-membered cyclic peroxides such as 1,2-dioxolanes, 1,2,4-trioxolanes (ozonides), 1,2-dioxanes, 1,2-dioxenes, 1,2,4-trioxanes, and 1,2,4,5-tetraoxanes. The literature from 2000 onwards is surveyed to provide an update on synthesis of cyclic peroxides. The indicated period of time is, on the whole, characterized by the development of new efficient and scale-up methods for the preparation of these cyclic compounds. It was shown that cyclic peroxides remain unchanged throughout the course of a wide range of fundamental organic reactions. Due to these properties, the molecular structures can be greatly modified to give peroxide ring-retaining products. The chemistry of cyclic peroxides has attracted considerable attention, because these compounds are used in medicine for the design of antimalarial, antihelminthic, and antitumor agents.
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Key Words
- 1,2,4,5-tetraoxanes
- 1,2,4-trioxanes
- 1,2,4-trioxolanes
- 1,2-dioxanes
- 1,2-dioxenes
- 1,2-dioxolanes
- cyclic peroxides
- ozonides
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Affiliation(s)
- Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Dmitry A Borisov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Valery M Dembitsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
- Institute for Drug Research, P.O. Box 12065, Hebrew University, Jerusalem 91120, Israel
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Rudshteyn B, Castillo A, Ghogare AA, Liebman JF, Greer A. Theoretical study of the reaction formalhydrazone with singlet oxygen. Fragmentation of the C=N bond, ene reaction and other processes. Photochem Photobiol 2013; 90:431-8. [PMID: 24354600 DOI: 10.1111/php.12199] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 10/21/2013] [Indexed: 01/03/2023]
Abstract
Photobiologic and synthetic versatility of hydrazones has not yet been established with (1)O2 as a route to commonly encountered nitrosamines. Thus, to determine whether the "parent" reaction of formalhydrazone and (1)O2 leads to facile C=N bond cleavage and resulting nitrosamine formation, we have carried out CCSD(T)//DFT calculations and analyzed the energetics of the oxidation pathways. A [2 + 2] pathway occurs via diradicals and formation of 3-amino-1,2,3-dioxazetidine in a 16 kcal/mol(-1) process. Reversible addition or physical quenching of (1)O2 occurs either on the formalhydrazone carbon for triplet diradicals at 2-3 kcal mol(-1), or on the nitrogen (N(3)) atom forming zwitterions at ~15 kcal/mol(-1), although the quenching channel by charge-transfer interaction was not computed. The computations also predict a facile conversion of formalhydrazone and (1)O2 to hydroperoxymethyl diazene in a low-barrier 'ene' process, but no 2-amino-oxaziridine-O-oxide (perepoxide-like) intermediate was found. A Benson-like analysis (group increment calculations) on the closed-shell species are in accord with the quantum chemical results.
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Affiliation(s)
- Benjamin Rudshteyn
- Department of Chemistry, Graduate Center & The City University of New York (CUNY), Brooklyn College, Brooklyn, NY
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40
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Chainikova EM, Pankratyev EY, Teregulova AN, Gataullin RR, Safiullin RL. Thermal intramolecular transformation of key intermediates in the photooxidation of para-allyl-substituted phenyl azide. J Phys Chem A 2013; 117:2728-37. [PMID: 23473334 DOI: 10.1021/jp401038g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The electronic spectra, kinetic regularities, and the mechanism of decay of the cis and trans isomeric forms of 4-[(2E)-1-methylbut-2-en-1-yl]phenylnitroso oxide (2) were studied by flash photolysis and product analysis. The mechanism of the consumption of this nitroso oxide is the same as the one proposed earlier for 4-methoxyphenylnitroso oxide. The trans-2 isomer is converted into cis-2, which undergoes cyclization to the substituted benzo[d][1,2,3]dioxazole 3. The reopening of the dioxazole ring yields nitrile oxide 4. The final product (3,4-dimethyl-3a,4-dihydro-2,1-benzisoxazol-5(3H)-ylidene)acetaldehyde (5) is formed by the intramolecular [3 + 2]-cycloaddition of the nitrile oxide group of 4 to the allylic double bond. To support the proposed mechanism, the quantum chemical calculations have been employed.
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Affiliation(s)
- Ekaterina M Chainikova
- Institute of Organic Chemistry, Ufa Scientific Center, The Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054 Ufa, Russian Federation.
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41
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Synthesis of nitrogen-containing heterocyclic compounds by photooxidation of aromatic azides. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Deary ME, Durrant MC, Davies DM. A kinetic and theoretical study of the borate catalysed reactions of hydrogen peroxide: the role of dioxaborirane as the catalytic intermediate for a wide range of substrates. Org Biomol Chem 2013. [PMID: 23188177 DOI: 10.1039/c2ob26842f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Michael E Deary
- Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK.
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43
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Rivard E. Recent Advances in the N-Heterocyclic Carbene-Supported Chemistry of Silicon. FUNCTIONAL MOLECULAR SILICON COMPOUNDS II 2013. [DOI: 10.1007/430_2013_94] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Chainikova EM, Safiullin RL, Spirikhin LV, Abdullin MF. A revised mechanism of thermal decay of arylnitroso oxides. J Phys Chem A 2012; 116:8142-7. [PMID: 22803653 DOI: 10.1021/jp301699p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The electronic spectra were measured and the unimolecular decay kinetics of the isomeric forms (cis and trans) of 4-methoxyphenylnitroso oxide in acetonitrile, benzene, and hexane was studied using flash photolysis. The cis form absorbed in a shorter wavelength region and was more labile than the trans form. The difference between the reactivity of the two species increased on going from hexane to acetonitrile. The temperature dependences of reaction rate constants were studied for both isomeric forms. The analysis of products of flash photolysis of 4-methoxyphenyl azide in the presence of oxygen allowed for understanding the mechanism of thermal decay of nitroso oxides. It was shown that the trans nitroso oxide is converted into cis nitroso oxide. The latter undergoes an unusual ring cleavage reaction to form 4-methoxy-6-oxohexa-2,4-dienenitrile N-oxide derivative. We conclude that the nitro- and nitrosobenzenes, which are the main products of the steady-state photolysis of aromatic azides in the presence of oxygen, are formed by the photochemical transformation of the nitroso oxides.
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Affiliation(s)
- Ekaterina M Chainikova
- Institution of the Russian Academy of Sciences Institute of Organic Chemistry, Ufa Scientific Center of the Russian Academy of Sciences, 71 prosp. Oktyabrya, 450054 Ufa, Russian Federation.
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Talipov MR, Khursan SL, Safiullin RL. A new intramolecular transformation of aromatic nitroso oxides. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2012. [DOI: 10.1134/s0036024412020318] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhang D, Hernandez B, Selke M. Photooxidation of metal-bound thiolates: reactivity of sulfur containing peroxidic intermediates. J Sulphur Chem 2011; 29:377-388. [PMID: 22379490 DOI: 10.1080/17415990802146980] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A variety of reactions of singlet oxygen with metal-bound thiolates are described, and contrasted with the photooxidation of organic sulfides. Superficially, these two processes appear to involve similar mechanisms, but there are important differences: unlike the photooxidation of organic sulfides, the rate of the initial reaction of metal-thiolates with singlet oxygen (k(t)) appears to be affected by protic solvents and acids. The nucleophilicity of the thiolate moiety is reduced by addition of acids or in protic solvents, leading to significantly lower k(t) values. The primary intermediate in the photooxidation of organic sulfides is a nucleophilic persulfoxide, which can be stabilized by protic solvents or by addition of acid. However, the primary intermediate in the photooxidation of metal thiolates cannot be trapped with phosphite, suggesting that it may be less nucleophilic than its organic counterpart. Support for this hypothesis is also derived from the rather modest (compared with organic sulfides) acceleration of the rate of product formation by addition of acid.
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Affiliation(s)
- Dong Zhang
- Department of Chemistry and Biochemistry, California State University Los Angeles, Los Angeles, CA, USA
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47
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Kweon KE, Hwang GS. Defect-Assisted Covalent Binding of Graphene to an Amorphous Silica Surface: A Theoretical Prediction. Chemphyschem 2011; 12:2155-9. [DOI: 10.1002/cphc.201100055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2011] [Revised: 04/15/2011] [Indexed: 11/06/2022]
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Talipov MR, Khursan SL, Safiullin RL. The reaction of nitroso oxides with olefins: Concerted or nonconcerted addition? RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2011. [DOI: 10.1134/s0036024411030290] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Belen’kii L, Gramenitskaya V, Evdokimenkova Y. The Literature of Heterocyclic Chemistry, Part X, 2005–2007. ADVANCES IN HETEROCYCLIC CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-385464-3.00001-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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50
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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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