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Pagacz-Kostrzewa M, Mucha K, Wierzejewska M, Filarowski A. UV Laser-Induced Phototransformations of Matrix-Isolated 5-Chloro-3-nitro-2-hydroxyacetophenone. Int J Mol Sci 2023; 24:ijms24021546. [PMID: 36675062 PMCID: PMC9864230 DOI: 10.3390/ijms24021546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 12/27/2022] [Accepted: 01/09/2023] [Indexed: 01/14/2023] Open
Abstract
Conformational changes of 5-chloro-3-nitro-2-hydroxyacetophenone were studied by experimental and theoretical methods. Phototransformations of the compound were induced in low-temperature argon matrices by using UV radiation, which was followed by FT-IR measurements. Two types of changes within the molecule were detected: rotations of the hydroxyl and acetyl groups. A new conformer without an intramolecular hydrogen bond was generated upon irradiation with λ = 330 nm, whereas the reverse reaction was observed at 415 nm.
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2
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Khursan SL, Ovchinnikov MY, Yarullin AR, Teregulova AN, Safiullin RL. Global Kinetics and Spectral Modeling of p-Methoxyphenyl Azide Photooxidation. J Phys Chem A 2022; 126:8188-8195. [DOI: 10.1021/acs.jpca.2c05711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sergey L. Khursan
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa450054, Russian Federation
| | - Mikhail Yu. Ovchinnikov
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa450054, Russian Federation
| | - Aidar R. Yarullin
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa450054, Russian Federation
| | - Aigul N. Teregulova
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa450054, Russian Federation
| | - Rustam L. Safiullin
- Ufa Institute of Chemistry, Ufa Federal Research Center of the Russian Academy of Sciences, 71 pr. Oktyabrya, Ufa450054, Russian Federation
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3
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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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4
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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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5
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Chapyshev SV, Korchagin DV, Misochko EY. Recent advances in chemistry of high-spin nitrenes. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4965] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Experimental and theoretical studies on aromatic nitrenes bearing from three to six unpaired electrons and having quartet, quintet, sextet or septet ground spin states, published in the last 15 years are analyzed. A comparative analysis of the magnetic properties of high-spin nitrenes and all other known high-spin organic molecules is performed. Promising areas of practical application of high-spin nitrenes as molecular magnets and as qubits and qudits for quantum computations are discussed.
The bibliography includes 214 references.
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6
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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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7
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Algarra M, Soto J, Pinto da Silva L, Pino-González MS, Rodríguez-Borges JE, Mascetti J, Borget F, Reisi-Vanani A, Luque R. Insights into the Photodecomposition of Azidomethyl Methyl Sulfide: A S 2/S 1 Conical Intersection on Nitrene Potential Energy Surfaces Leading to the Formation of S-Methyl- N-sulfenylmethanimine. J Phys Chem A 2020; 124:1911-1921. [PMID: 32053376 DOI: 10.1021/acs.jpca.9b11157] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
UV photodecomposition of azidomethyl methyl sulfide (AMMS) yields a transient S-methylthiaziridine which rapidly evolves to S-methyl-N-sulfenylmethanimine at 10 K. This species was detected by infrared matrix isolation spectroscopy. The mechanism of the photoreaction of AMMS has been investigated by a combined approach, using low-temperature matrix isolation FTIR spectroscopy in conjunction with two theoretical methods, namely, complete active space self-consistent field and multiconfigurational second-order perturbation. The key step of the reaction is governed by a S2/S1 conical intersection localized in the neighborhood of the singlet nitrene minimum which is formed in the first reaction step of the photolysis, that is, N2 elimination from AMMS. Full assignment of the observed infrared spectra of AMMS has been carried out based on comparison with density functional theory and second-order perturbation Møller-Plesset methods.
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Affiliation(s)
- Manuel Algarra
- CQM-Centro de Química da Madeira, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - Juan Soto
- Department Physical Chemistry, Faculty of Science, University Málaga, 29016 Málaga, Spain
| | - Luis Pinto da Silva
- Chemistry Research Unit (CIQUP), Department of Chemistry and Biochemistry, Faculty of Sciences of University of Porto, R. Campo Alegre 697, 4169-007 Porto, Portugal.,LACOMEPHI, GreenUP, Department of Geosciences, Environment and Territorial Planning, Faculty of Sciences of University of Porto, R. Campo Alegre 697, 4169-007 Porto, Portugal
| | | | - J Enrique Rodríguez-Borges
- Chemistry Research Unit (CIQUP), Department of Chemistry and Biochemistry, Faculty of Sciences of University of Porto, R. Campo Alegre 697, 4169-007 Porto, Portugal
| | - Joelle Mascetti
- Institut des Sciences Moléculaires, University Bordeaux, 33405 Talence, France
| | - Fabien Borget
- Physique des Interactions Ioniques et Moléculaires, Aix Marseille University, 13007 Marseille, France
| | - Adel Reisi-Vanani
- Department of Physical Chemistry, Faculty of Chemistry, University of Kashan, 87317-51167 Kashan, Iran
| | - Rafael Luque
- Department Organic Chemistry, University Córdoba, Edif. Marie Curie, Ctra N IVa Km 396, 14014 Córdoba, Spain.,Peoples Friendship University of Russia (RUDN University), 6 Miklukho Maklaya str., 117198 Moscow, Russia
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8
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Safiullin RL, Chainikova EM, Teregulova AN, Khursan SL. Kinetics and Mechanism of the Reactions of Aromatic Nitroso Oxides with Tetracyanoethylene. KINETICS AND CATALYSIS 2019. [DOI: 10.1134/s0023158419020095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Shete AU, El-Zaatari BM, French JM, Kloxin CJ. Blue-light activated rapid polymerization for defect-free bulk Cu(i)-catalyzed azide-alkyne cycloaddition (CuAAC) crosslinked networks. Chem Commun (Camb) 2018; 52:10574-7. [PMID: 27499057 DOI: 10.1039/c6cc05095f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible-light (470 nm wavelength) sensitive Type II photoinitiator system is developed for bulk Cu(i)-catalyzed azide-alkyne cycloaddition (CuAAC) reactions in crosslinked networks. The accelerated photopolymerization eliminates UV-mediated azide decomposition allowing for the formation of defect-free glassy networks which exhibit a narrow glass transition temperature.
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Affiliation(s)
- Abhishek U Shete
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE 19716, USA.
| | - Bassil M El-Zaatari
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, DE 19716, USA
| | - Jonathan M French
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE 19716, USA.
| | - Christopher J Kloxin
- Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, DE 19716, USA. and Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, DE 19716, USA
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10
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Xie BB, Cui CX, Fang WH, Cui G. Photoinduced Curtius rearrangements of fluorocarbonyl azide, FC(O)N 3: a QM/MM nonadiabatic dynamics simulation. Phys Chem Chem Phys 2018; 20:19363-19372. [DOI: 10.1039/c8cp02651c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Upon either photolysis or pyrolysis, carbonyl azide can eliminate molecular nitrogen along with the formation of isocyanate.
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Affiliation(s)
- Bin-Bin Xie
- Hangzhou Institute of Advanced Studies
- Zhejiang Normal University
- Hangzhou 311231
- P. R. China
- Key Laboratory of Theoretical and Computational Photochemistry
| | - Cheng-Xing Cui
- School of Chemistry and Chemical Engineering
- Henan Institute of Science and Technology
- Xinxiang 453003
- P. R. China
| | - Wei-Hai Fang
- Hangzhou Institute of Advanced Studies
- Zhejiang Normal University
- Hangzhou 311231
- P. R. China
- Key Laboratory of Theoretical and Computational Photochemistry
| | - Ganglong Cui
- Key Laboratory of Theoretical and Computational Photochemistry
- Ministry of Education College of Chemistry
- Beijing Normal University
- Beijing 100875
- P. R. China
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11
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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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12
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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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13
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Andersson H, Gräfenstein J, Isobe M, Erdélyi M, Sydnes MO. Photochemically Induced Aryl Azide Rearrangement: Solution NMR Spectroscopic Identification of the Rearrangement Product. J Org Chem 2017; 82:1812-1816. [PMID: 28068094 DOI: 10.1021/acs.joc.6b02555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photolysis of ethyl 3-azido-4,6-difluorobenzoate at room temperature in the presence of oxygen results in the regioselective formation of ethyl 5,7-difluoro-4-azaspiro[2.4]hepta-1,4,6-triene-1-carboxylate, presumably via the corresponding ketenimine intermediate which undergoes a photochemical four-electron electrocyclization followed by a rearrangement. The photorearrangement product was identified by multinuclear solution NMR spectroscopic techniques supported by DFT calculations.
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Affiliation(s)
- Hanna Andersson
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Jürgen Gräfenstein
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Minoru Isobe
- Department of Chemistry, National Sun Yat-Sen University , Kaohsiung, Taiwan
| | - Máté Erdélyi
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden.,The Swedish NMR Centre , SE-413 96 Gothenburg, Sweden
| | - Magne O Sydnes
- Department of Mathematics and Natural Science, University of Stavanger , NO-4036 Stavanger, Norway
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14
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Peng XL, Ding WL, Li QS, Li ZS. Theoretical insights into photo-induced Curtius rearrangement of chlorodifluoroacetyl azide. Org Chem Front 2017. [DOI: 10.1039/c7qo00083a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism of photo-induced Curtius rearrangement is a two-step reaction with a nitrene intermediate.
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Affiliation(s)
- Xing-Liang Peng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
| | - Wei-Lu Ding
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
| | - Quan-Song Li
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
| | - Ze-Sheng Li
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
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15
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Liu Q, Li H, Wu Z, Li D, Beckers H, Rauhut G, Zeng X. Photolysis of Carbonyl Diisocyanate: Generation of Isocyanatocarbonyl Nitrene and Diazomethanone. Chem Asian J 2016; 11:2953-2959. [DOI: 10.1002/asia.201601073] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Qifan Liu
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
| | - Hongmin Li
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
| | - Zhuang Wu
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
| | - Dingqing Li
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
| | - Helmut Beckers
- Institut für Chemie und Biochemie; Freie Universität Berlin; Berlin 14195 Germany
| | - Guntram Rauhut
- Institute of Theoretical Chemistry; University of Stuttgart; Stuttgart 70569 Germany
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P. R. China
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16
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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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17
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Mieres-Pérez J, Mendez-Vega E, Velappan K, Sander W. Reaction of Triplet Phenylnitrene with Molecular Oxygen. J Org Chem 2015; 80:11926-31. [DOI: 10.1021/acs.joc.5b01263] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Joel Mieres-Pérez
- Lehrstuhl
für Organische
Chemie II, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - Enrique Mendez-Vega
- Lehrstuhl
für Organische
Chemie II, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - Kavitha Velappan
- Lehrstuhl
für Organische
Chemie II, Ruhr-Universität Bochum, D-44780 Bochum, Germany
| | - Wolfram Sander
- Lehrstuhl
für Organische
Chemie II, Ruhr-Universität Bochum, D-44780 Bochum, Germany
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18
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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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19
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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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20
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Pinto RM, Guerra M, Copeland G, Olariu RI, Rodrigues P, Barros MT, Costa ML, Dias AA. The Mechanism of Pyrolysis of Benzyl Azide: Spectroscopic Evidence for Benzenemethanimine Formation. J Phys Chem A 2015; 119:4118-26. [DOI: 10.1021/acs.jpca.5b02453] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
| | | | - Grant Copeland
- Department of Chemistry, The University of Southampton, Southampton SO17 1BJ, U.K
| | - Romeo I. Olariu
- Faculty
of Chemistry, “Al. I. Cuza” University of Iasi, 11
Carol I, 700506, Iasi, Romania
| | - Paula Rodrigues
- ITQB, Instituto de Tecnologia
Química e Biológica, Universidade Nova de Lisboa, 2780-901 Oeiras, Portugal
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21
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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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22
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Geiger U, Haas Y. Photochemistry of Aryl Pentazoles: para-Methoxyphenylpentazole. J Phys Chem B 2015; 119:7338-48. [DOI: 10.1021/jp5108813] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- U. Geiger
- Institute of Chemistry, The Hebrew University, Jerusalem 9190401, Israel
| | - Y. Haas
- Institute of Chemistry, The Hebrew University, Jerusalem 9190401, Israel
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23
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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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24
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Budruev AV, Sinjagina DY. Photochemical modification of polyethylene surface with aryl azides. HIGH ENERGY CHEMISTRY 2013. [DOI: 10.1134/s0018143913050020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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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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26
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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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27
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Pinto R, Dias A, Levita G, Rodrigues P, Barros M, Dyke J, Costa M. Pyrolysis of 3-azidopropionitrile studied by UV photoelectron and matrix-isolation IR spectroscopies: Formation of ketenimine H2CCNH. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.04.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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28
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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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29
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Filthaus M, Schwertmann L, Neuhaus P, Seidel RW, Oppel IM, Bettinger HF. C–H Bond Amination by Photochemically Generated Transient Borylnitrenes at Room Temperature: A Combined Experimental and Theoretical Investigation of the Insertion Mechanism and Influence of Substituents. Organometallics 2012. [DOI: 10.1021/om300063y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthias Filthaus
- Institut für Organische
Chemie, Universität Tübingen, Auf der Morgenstelle
18, 72076 Tübingen, Germany
| | | | | | | | - Iris M. Oppel
- Institut für Anorganische
Chemie, RWTH Aachen, Landoltweg
1, 52074 Aachen, Germany
| | - Holger F. Bettinger
- Institut für Organische
Chemie, Universität Tübingen, Auf der Morgenstelle
18, 72076 Tübingen, Germany
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30
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Vyas S, Kubicki J, Luk HL, Zhang Y, Gritsan NP, Hadad CM, Platz MS. An ultrafast time-resolved infrared and UV-vis spectroscopic and computational study of the photochemistry of acyl azides. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.2903] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shubham Vyas
- Department of Chemistry; The Ohio State University; 100 West 18th Avenue; Columbus; OH; 43210; USA
| | - Jacek Kubicki
- Quantum Electronics Laboratory, Faculty of Physics; Adam Mickiewicz University; Umultowska 85; 61-614; Poznań; Poland
| | - Hoi Ling Luk
- Department of Chemistry; The Ohio State University; 100 West 18th Avenue; Columbus; OH; 43210; USA
| | - Yunlong Zhang
- Department of Chemistry; The Ohio State University; 100 West 18th Avenue; Columbus; OH; 43210; USA
| | - Nina P. Gritsan
- Institute of Chemical Kinetics and Combustion; Siberian Branch of Russian Academy of Science and Novosibirsk State University; 630090; Novosibirsk; Russia
| | - Christopher M. Hadad
- Department of Chemistry; The Ohio State University; 100 West 18th Avenue; Columbus; OH; 43210; USA
| | - Matthew S. Platz
- Department of Chemistry; The Ohio State University; 100 West 18th Avenue; Columbus; OH; 43210; USA
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31
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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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32
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Chainikova EM, Safiullin RL, Spirikhin LV. Redox isomerization of aromatic nitroso oxides. DOKLADY CHEMISTRY 2012. [DOI: 10.1134/s001250081201003x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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33
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Kubicki J, Zhang Y, Xue J, Ling Luk H, Platz M. Ultrafast time resolved studies of the photochemistry of acyl and sulfonyl azides. Phys Chem Chem Phys 2012; 14:10377-90. [DOI: 10.1039/c2cp40226b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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34
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Vitillo JG, Lescouet T, Savonnet M, Farrusseng D, Bordiga S. Soft synthesis of isocyanate-functionalised metal–organic frameworks. Dalton Trans 2012; 41:14236-8. [DOI: 10.1039/c2dt31977b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Lopes S, Nunes CM, Gómez-Zavaglia A, Pinho e Melo TM, Fausto R. Structure and photochemical behaviour of 3-azido-acrylophenones: a matrix isolation infrared spectroscopy study. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.084] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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36
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Kubicki J, Zhang Y, Vyas S, Burdzinski G, Luk HL, Wang J, Xue J, Peng HL, Pritchina EA, Sliwa M, Buntinx G, Gritsan NP, Hadad CM, Platz MS. Photochemistry of 2-Naphthoyl Azide. An Ultrafast Time-Resolved UV–Vis and IR Spectroscopic and Computational Study. J Am Chem Soc 2011; 133:9751-61. [DOI: 10.1021/ja109098w] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Jacek Kubicki
- Quantum Electronics Laboratory, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
| | - Yunlong Zhang
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States
| | - Shubham Vyas
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States
| | - Gotard Burdzinski
- Quantum Electronics Laboratory, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
| | - Hoi Ling Luk
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States
| | - Jin Wang
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States
| | - Jiadan Xue
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States
| | - Huo-Lei Peng
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States
| | - Elena A. Pritchina
- Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Science and Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Michel Sliwa
- Laboratoire de Spectrochimie Infrarouge et Raman (LASIR), UMR 8516/CNRS −Université Lille 1 Sciences et Technologies, 59655 Villeneuve d’Ascq, France
| | - Guy Buntinx
- Laboratoire de Spectrochimie Infrarouge et Raman (LASIR), UMR 8516/CNRS −Université Lille 1 Sciences et Technologies, 59655 Villeneuve d’Ascq, France
| | - Nina P. Gritsan
- Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Science and Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Christopher M. Hadad
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States
| | - Matthew S. Platz
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, 43210, United States
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37
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Nikolaeva MI, Korolev VV, Pritchina EA, Glebov EM, Plyusnin VF, Metelitsa AV, Voloshin NA, Minkin VI. Photochromism of 6′-cyanosubstituted spirooxazines in frozen alcohol matrices. KINETICS AND CATALYSIS 2011. [DOI: 10.1134/s0023158411020145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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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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39
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40
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Bettinger HF, Filthaus M. Borylnitrenes: electrophilic reactive intermediates with high reactivity towards C-H bonds. Org Biomol Chem 2010; 8:5477-82. [PMID: 20931109 DOI: 10.1039/c0ob00107d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Borylnitrenes (catBN 3a and pinBN 3b; cat = catecholato, pin = pinacolato) are reactive intermediates that show high tendency towards insertion into the C-H bonds of unactivated hydrocarbons. The present article summarizes the matrix isolation investigations that were aimed at identifying, characterizing and investigating the chemical behaviour of 3a by spectroscopic means, and of the experiments in solution and in the gas phase that were performed with 3b. Comparison with the reactivity reported for difluorovinylidene 1a in solid argon indicates that 3a shows by and large similar reactivity, but only after photochemical excitation. The derivative 3b inserts into the C-H bonds of hydrocarbon solvents in high yields and thus allows the formation of primary amines, secondary amines, or amides from "unreactive" hydrocarbons. It can also be used for generation of methylamine or methylamide from methane in the gas phase at room temperature. Remaining challenges in the chemistry of borylnitrenes are briefly summarized.
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Affiliation(s)
- Holger F Bettinger
- Institut für Organische Chemie, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
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41
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Khursan VS, Kovaleva OA, Chainikova EM, Talipov MR, Safiullin RL. A flash photolysis and theoretical study of the reaction of arylnitroso oxides with phosphorus(III) compounds. HIGH ENERGY CHEMISTRY 2010. [DOI: 10.1134/s0018143910040053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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Khursan VS, Chainikova EM, Safiullin RL. Flash photolysis study of the reactivity of isomeric forms of arylnitroso oxides toward triphenyl phosphite. HIGH ENERGY CHEMISTRY 2009. [DOI: 10.1134/s0018143909060095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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Chainikova EM, Safiullin RL. Reactivity of arylnitroso oxides to triphenylphosphine. KINETICS AND CATALYSIS 2009. [DOI: 10.1134/s0023158409040089] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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44
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Kubicki J, Zhang Y, Wang J, Luk HL, Peng HL, Vyas S, Platz MS. Direct observation of acyl azide excited states and their decay processes by ultrafast time resolved infrared spectroscopy. J Am Chem Soc 2009; 131:4212-3. [PMID: 19317497 DOI: 10.1021/ja9002102] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The photochemistry of three carbonyl azides was studied by ultrafast time-resolved IR spectroscopy. Benzoyl, 2-naphthoyl, and pivavoyl azides are promoted to upper excited states S(n) with 270 nm excitation in chloroform. The S(n) states decay in 300 fs to form both the carbonylnitrenes and the S(1) excited states. The decay of the S(1) states of the carbonyl azides correlates with the growth of isocyanates. Formation of carbonylnitrene from S(1) is at most a minor process if it happens at all. The quantum yields of azide decomposition of these azides with 270 nm light are close to unity in chloroform.
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Affiliation(s)
- Jacek Kubicki
- Quantum Electronics Laboratory, Faculty of Physics, Adam Mickiewicz University, 85 Umultowska, Poznan 61-614, Poland
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45
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Talipov MR, Khursan SL, Safiullin RL. RRKM and ab initio investigation of the NH (X) oxidation by dioxygen. J Phys Chem A 2009; 113:6468-76. [PMID: 19441782 DOI: 10.1021/jp902527a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We performed a detailed study of the NH + O(2) potential energy surface by means of a number of multireference (CASSCF, MC-QDPT2, MR-AQCC, MR-CISD(18;13)+Q with 6-311+G(d,p), and aug-cc-pVTZ basis sets) and composite (G3B3, G3MP2B3, CBS-QB3, W1U) methods. Parent nitroso oxide, HNOO, was found to be the key intermediate of this process. In its ground state, (1)A', HNOO exists in two conformations, where the cis form is 8.1-10.9 kJ x mol(-1) more stable than the trans-nitroso oxide. The mechanism of nitrene oxidation by dioxygen may be represented as a set of various transformations of vibrationally excited HNOO, namely, decomposition into NO and OH radical pair, O-O dissociation reaction, and a number of thermal deactivation processes. We localized all stationary points of these transformations on both the singlet and the triplet reaction PES. The energies of reactants, products, and transition states were calculated at the RI-MR-CISD(18;13)+Q/aug-cc-pVTZ level of theory; the vibrational analysis of these species was done by means of CASSCF(18;13)/6-311+G(d,p). Apparent rate constants of the NH + O(2) reaction were calculated using RRKM theory. The total rate constant k(total) corresponds well to available experimental data. The temperature dependence of k(total) is rather nontrivial and consists of three quasi-linear intervals. At low temperatures (up to room temperature) the slope of log(k(total)) vs 1/T is negative due to prevailing stabilization of HNOO. The rate-determining channel of the "NH + O(2)" reaction in the medium-temperature interval (up to approximately 1000 K) was found to be formation of the NO + OH radical pair via H transfer to the terminal oxygen atom. This reaction is accelerated by a factor of 4.2 (214 K) and 1.2 (2500 K) due to tunnel effect. The distinctive feature of the NH + O(2) high-temperature chemistry is the increase of the effective activation energy due to prevailing dissociation of the HNOO peroxide bond.
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Affiliation(s)
- Marat R Talipov
- Institute of Organic Chemistry, Ufa Scientific Centre, Russian Academy of Sciences, pr. Oktyabrya 71, Ufa, 450054 Russia.
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46
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Chainikova EM, Safiullin RL. Chain processes in the reduction of aromatic nitroso compounds by triphenylphosphine in the presence of oxygen. Russ Chem Bull 2009. [DOI: 10.1007/s11172-009-0116-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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47
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Chainikova EM, Teregulova AN, Shamukaev VA, Safiullin RL. Chemiluminescence during deoxygenation of nitrosobenzene with triphenylphosphine. HIGH ENERGY CHEMISTRY 2009. [DOI: 10.1134/s0018143909020143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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