1
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Yan Z, Ye J, Wang H, Chen T, Xu ZF, Yu M, Li CY. Aerobic Oxysulfonylation of Olefins Using N-Sulfonylaminophthalimides as Sulfonyl Radical Precursors. Org Lett 2024; 26:6647-6651. [PMID: 39073919 DOI: 10.1021/acs.orglett.4c02303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2024]
Abstract
Readily accessible N-sulfonylaminophthalimides were developed to be efficient sulfonyl radical precursors upon being treated with a base/oxidant under mild conditions. The method was applied to the oxysulfonylation of olefins, providing β-ketosulfones and isobenzofurans stereoselectively. On the basis of control experiments, density functional theory calculations, and the literature, a plausible radical mechanism was proposed. The findings offered a chance to develop novel radical precursors based on diversely substituted N-aminophthalimides, which might establish a universal mild approach for the generation of various radicals.
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Affiliation(s)
- Zhenxing Yan
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jie Ye
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Heng Wang
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Tao Chen
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Ze-Feng Xu
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Mingming Yu
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Chuan-Ying Li
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
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2
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Qian W, Schreiner PR, Mardyukov A. Preparation and Photochemistry of Parent Triplet Vinylarsinidene. J Am Chem Soc 2024; 146:930-935. [PMID: 38143310 DOI: 10.1021/jacs.3c11432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
Vinyl pnictinidenes are an elusive family of molecules that have been suggested as key intermediates in multiple chemical reactions and commonly display a predisposition toward open-shell electronic ground states (as is evident from quantum chemical computations). However, owing to their expected extremely high reactivity, no vinyl pnictinidene has ever been isolated and characterized spectroscopically. Here, we report the synthesis and spectroscopic characterization of vinylarsinidene, a higher congener of vinylnitrene. As we demonstrate, triplet vinylarsinidene can be prepared through the low-temperature photolysis of diazidovinylarsine at 10 K in an argon matrix. The title compound can also be generated through high-vacuum flash pyrolysis of the diazide at 700 °C and trapped analogously. Triplet vinylarsinidene was characterized by IR and UV/vis spectroscopy and displayed remarkably rich unimolecular photochemistry. Upon selective photoirradiation, it rearranges to vinylidenearsine, 2H-arsirene, triplet ethynylarsinidene or an arsinidene (H-As) acetylene complex. The formation mechanisms of these products were rationalized with DFT and CASPT2 computations.
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Affiliation(s)
- Weiyu Qian
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Artur Mardyukov
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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3
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Li X, Lu B, Jiang J, Wang L, Trabelsi T, Francisco JS, Fang W, Zhou M, Zeng X. Water Complex of Imidogen. J Am Chem Soc 2023; 145:1982-1987. [PMID: 36633923 DOI: 10.1021/jacs.2c12808] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Imidogen (NH) is the simplest nitrogen hydride that plays an important role in combustion and interstellar chemistry, and its combination with H2O is the prototypical amidation reaction of O-H bonds involving a nitrene intermediate. Herein, we report the observation of the elusive water complex of NH, a prereaction complex associated with the amidation reaction in a solid N2 matrix at 10 K. The hydrogen-bonded structure of NH···OH2 (versus HN···HOH) is confirmed via IR spectroscopy with comprehensive isotope labeling (D, 18O, and 15N) and quantum chemical calculations at the UCCSD(T)/aug-cc-pVQZ level of theory. In line with the observed absorption at 350 nm, irradiation of the complex at 365 nm leads to O-H bond insertion, yielding hydroxylamine NH2OH.
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Affiliation(s)
- Xiaolong Li
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, 200433 Shanghai, China
| | - Bo Lu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, 200433 Shanghai, China
| | - Junjie Jiang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, 200433 Shanghai, China
| | - Lina Wang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, 200433 Shanghai, China
| | - Tarek Trabelsi
- Department of Earth and Environment Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6243, United States
| | - Joseph S Francisco
- Department of Earth and Environment Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6243, United States
| | - Wei Fang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, 200433 Shanghai, China
| | - Mingfei Zhou
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, 200433 Shanghai, China
| | - Xiaoqing Zeng
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, 200433 Shanghai, China
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4
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Lin SY, Chou SL, Tseng CM, Wu YJ. IR absorption spectra of aniline cation, anilino radical, and phenylnitrene isolated in solid argon. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 276:121233. [PMID: 35405375 DOI: 10.1016/j.saa.2022.121233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/29/2022] [Accepted: 04/02/2022] [Indexed: 06/14/2023]
Abstract
Electron bombardment of aniline (PhNH2) in an Ar matrix mainly generated the aniline cation (PhNH2+), anilino (PhNH) and phenyl (Ph) radicals, and phenylnitrene (PhN). Further irradiation of the electron-bombarded matrix sample at 365 nm depleted PhNH2+ and PhN, and resulted in the formation of PhNH2, PhNH, and Ph. In separate experiments, irradiation of the PhNH2/Ar matrix samples at 265 or 160 nm mainly generated PhNH and Ph radicals, but without the formation of PhNH2+ and PhN. According to the observed photochemical behaviors, quantum-chemically predicted harmonic vibrational wavenumbers of each species, and the information reported in previous photodissociation studies, we unambiguously characterized the IR features of the aromatic species. The information of the vibrational fundamentals of PhNH is new and the formation mechanism is discussed.
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Affiliation(s)
- Shu-Yu Lin
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Sheng-Lung Chou
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Chien-Ming Tseng
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Yu-Jong Wu
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan; National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan.
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5
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Fischer T, Tenbusch J, Möller M, Singh S. A facile method for grafting functional hydrogel films on PTFE, PVDF, and TPX polymers. SOFT MATTER 2022; 18:4315-4324. [PMID: 35621021 DOI: 10.1039/d2sm00313a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The use of polymeric materials in biomedical applications requires a judicious control of surface properties as they are directly related to cellular interactions and biocompatibility. The most desired chemical surface properties include hydrophilicity and the presence of functional groups for surface modification. In this work, we describe a method to graft a highly stable, ultra-thin, amine-functional hydrogel layer onto highly inert surfaces of poly(tetrafluoroethylene) (PTFE), poly(vinylidene fluoride) (PVDF), and poly(4-methyl-1-pentene) (PMP or TPX). Covalent grafting is realized with hydrophilic poly(vinylamine-co-acetamide)s by C-H insertion crosslinking (CHic) chemistry initiated by UV light. These polyvinylamides carry tetrafluorophenyl azide groups as photo or thermo activated binding sites and contain further free amine groups, which can be used to bind peptides such as biological ligands, polysaccharides, or other hydrogel layers. The covalently bound surface layers resist intensive Soxhlet extraction confirming the stability of the coating. Fluorescent staining verified the accessibility of free primary amine groups, which can be used for the functionalization of the surface with bioactive molecules. The coating demonstrates hydrophobic wetting behavior when conditioned in air and hydrophilic wetting behavior when conditioned in water showing the presence of loosely crosslinked polymer chains that can re-orient. We believe that the reported application of CHic for the surface modification of fluorinated polymers like PTFE and PVDF as well as TPX can form the basis for advanced biocompatible and biofunctional surface engineering.
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Affiliation(s)
- Thorsten Fischer
- DWI-Leibniz-Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Jan Tenbusch
- DWI-Leibniz-Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Martin Möller
- DWI-Leibniz-Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Smriti Singh
- DWI-Leibniz-Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany
- Max-Planck-Institut für medizinische Forschung, Jahnstraße 29, 69120 Heidelberg, Germany.
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6
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Lu S, Fu Z, Li F, Weng K, Zhou L, Zhang L, Yang Y, Qiu H, Liu D, Qing W, Ding H, Sheng X, Chen M, Tang X, Duan L, Liu W, Wu L, Yang Y, Zhang H, Li J. Beyond a Linker: The Role of Photochemistry of Crosslinkers in the Direct Optical Patterning of Colloidal Nanocrystals. Angew Chem Int Ed Engl 2022; 61:e202202633. [PMID: 35319804 DOI: 10.1002/anie.202202633] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 12/25/2022]
Abstract
Surface chemistry mediated direct optical patterning represents an emerging strategy for incorporating colloidal nanocrystals (NCs) in integrated optoelectronic platforms including displays and image sensors. However, the role of photochemistry of crosslinkers and other photoactive species in patterning remains elusive. Here we show the design of nitrene- and carbene-based photocrosslinkers can strongly affect the patterning capabilities and photophysical properties of NCs, especially quantum dots (QDs). Their role beyond physical linkers stems from structure-dictated electronic configuration, energy alignment and associated reaction kinetics and thermodynamics. Patterned QD layers with designed carbene-based crosslinkers fully preserve their photoluminescent and electroluminescent properties. Patterned light emitting diodes (QLEDs) show a maximum external quantum efficiency of ≈12 % and lifetime over 4800 h, among the highest for reported patterned QLEDs. These results would guide the rational design of photoactive species in NC patterning and create new possibilities in the monolithic integration of NCs in high-performance device platforms.
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Affiliation(s)
- Shaoyong Lu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - Zhong Fu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - Fu Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - Kangkang Weng
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - Likuan Zhou
- TCL Research, No. 1001 Zhongshan Park Road, Shenzhen, Guangdong, 518067, China
| | - Lipeng Zhang
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yuchen Yang
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - Hengwei Qiu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - Dan Liu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - Wenyue Qing
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
| | - He Ding
- Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
| | - Xing Sheng
- Department of Electrical Engineering, Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing, 100084, China.,Center for Flexible Electronic Technology, Tsinghua University, Beijing, 100084, China
| | - Menglu Chen
- Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
| | - Xin Tang
- Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing, 100081, China
| | - Lian Duan
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China.,Center for Flexible Electronic Technology, Tsinghua University, Beijing, 100084, China
| | - Wenyong Liu
- TCL Research, No. 1001 Zhongshan Park Road, Shenzhen, Guangdong, 518067, China
| | - Longjia Wu
- TCL Research, No. 1001 Zhongshan Park Road, Shenzhen, Guangdong, 518067, China
| | - Yixing Yang
- TCL Research, No. 1001 Zhongshan Park Road, Shenzhen, Guangdong, 518067, China
| | - Hao Zhang
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China.,Center for Flexible Electronic Technology, Tsinghua University, Beijing, 100084, China
| | - Jinghong Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Center for BioAnalytical Chemistry, Tsinghua University, Beijing, 100084, China
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7
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Lu S, Fu Z, Li F, Weng K, Zhou L, Zhang L, Yang Y, Qiu H, Liu D, Qing W, Ding H, Sheng X, Chen M, Tang X, Duan L, Liu W, Wu L, Yang Y, Zhang H, Li J. Beyond a Linker: The Role of Photochemistry of Crosslinkers in the Direct Optical Patterning of Colloidal Nanocrystals. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shaoyong Lu
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - Zhong Fu
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - Fu Li
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - Kangkang Weng
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - Likuan Zhou
- TCL Research No. 1001 Zhongshan Park Road Shenzhen Guangdong 518067 China
| | - Lipeng Zhang
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - Yuchen Yang
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - Hengwei Qiu
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - Dan Liu
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - Wenyue Qing
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
| | - He Ding
- Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and Photonics Beijing Institute of Technology Beijing 100081 China
| | - Xing Sheng
- Department of Electrical Engineering Beijing National Research Center for Information Science and Technology Tsinghua University Beijing 100084 China
- Center for Flexible Electronic Technology Tsinghua University Beijing 100084 China
| | - Menglu Chen
- Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology School of Optics and Photonics Beijing Institute of Technology Beijing 100081 China
| | - Xin Tang
- Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology School of Optics and Photonics Beijing Institute of Technology Beijing 100081 China
| | - Lian Duan
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
- Center for Flexible Electronic Technology Tsinghua University Beijing 100084 China
| | - Wenyong Liu
- TCL Research No. 1001 Zhongshan Park Road Shenzhen Guangdong 518067 China
| | - Longjia Wu
- TCL Research No. 1001 Zhongshan Park Road Shenzhen Guangdong 518067 China
| | - Yixing Yang
- TCL Research No. 1001 Zhongshan Park Road Shenzhen Guangdong 518067 China
| | - Hao Zhang
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
- Center for Flexible Electronic Technology Tsinghua University Beijing 100084 China
| | - Jinghong Li
- Department of Chemistry Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Center for BioAnalytical Chemistry Tsinghua University Beijing 100084 China
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8
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Wagner JP. 2 H-Imidazol-2-one O-Oxide: A Criegee Intermediate from a σ 0π 2 Singlet Ground-State Carbene. J Am Chem Soc 2022; 144:5937-5944. [PMID: 35325537 DOI: 10.1021/jacs.1c13705] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Triplet carbenes and triplet molecular oxygen can combine to form singlet carbonyl O-oxide Criegee intermediates in an overall spin-allowed transformation. While this reaction runs at the diffusion limit in the case of triplet carbenes, singlet carbenes are commonly more reluctant to bind 3O2. In contradiction to this customarily encountered spin selectivity, the σ0π2 singlet ground-state carbene 2H-imidazol-2-ylidene 1 reacts extremely rapidly with 3O2 at temperatures as low as 30 K. The product of this cryogenic reaction is singlet 2H-imidazol-2-one O-oxide 7, an N-heterocyclic Criegee intermediate. The addition reaction becomes possible through the electrophilic activation of dioxygen in the triplet state, in which O2 binding can initially proceed without a barrier. Criegee intermediate 7 exhibits an unprecedented high O-O stretching vibration at 1105 cm-1, which can be explained by a resonance structure with an O2 double bond. Furthermore, 2H-imidazol-2-one 5 and spiro-dioxirane 6 could be identified as the photodecomposition products of the herein-reported carbonyl oxide.
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Affiliation(s)
- J Philipp Wagner
- Institut für Organische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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9
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Zhu B, Jiang J, Lu B, Li X, Jiang X, Rauhut G, Zeng X. Phosphenic isocyanate (O2PNCO): Gas-phase generation, characterization, and photodecomposition reactions. Chem Commun (Camb) 2022; 58:10703-10706. [DOI: 10.1039/d2cc03178g] [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
Phosphenic isocyanate (O2PNCO), a novel phosphorus-containing small molecule has been generated by thermolysis of a dioxaphospholane-based precursor. The characterization of O2PNCO with IR and UV-vis spectroscopy in solid N2 and...
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10
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Schleif T, Sander W. Photolysis and thermolysis of (iodomethyl)cyclopropane: Rapid ring opening of cyclopropylcarbinyl via heavy‐atom tunneling? J PHYS ORG CHEM 2021. [DOI: 10.1002/poc.4295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tim Schleif
- Lehrstuhl für Organische Chemie II Ruhr‐Universität Bochum Bochum Germany
| | - Wolfram Sander
- Lehrstuhl für Organische Chemie II Ruhr‐Universität Bochum Bochum Germany
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11
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Chapyshev SV, Mendez-Vega E, Sander W. Molecular Magnets: The Synthesis and Characterization of High-Spin Nitrenes. Chemistry 2021; 27:1258-1269. [PMID: 32578914 PMCID: PMC7894309 DOI: 10.1002/chem.202002234] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/23/2020] [Indexed: 01/28/2023]
Abstract
Among all C‐, N‐, and O‐centered polyradicals, high‐spin nitrenes possess the largest magnetic anisotropy and are of considerable interest as multi‐level molecular spin systems for exploration of organic molecular magnetism and quantum information processing. Although the first representatives of quintet and septet nitrenes were obtained almost 50 years ago, the experimental and theoretical studies of these highly reactive species became possible only recently, owing to new achievements in molecular spectroscopy and computational chemistry. Meanwhile, dozens of various quintet dinitrenes and septet trinitrenes were successfully characterized by IR, UV/Vis, and EPR spectroscopy, thus providing important information about the electronic structure, magnetic properties and reactivity of these compounds.
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Affiliation(s)
- Sergei V Chapyshev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow Region, Russia
| | - Enrique Mendez-Vega
- Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum, 44780, Bochum, Germany
| | - Wolfram Sander
- Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum, 44780, Bochum, Germany
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12
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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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13
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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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14
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Mendez-Vega E, Sander W, Hemberger P. Isomer-Selective Threshold Photoelectron Spectra of Phenylnitrene and Its Thermal Rearrangement Products. J Phys Chem A 2020; 124:3836-3843. [PMID: 32208698 DOI: 10.1021/acs.jpca.0c01134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The photoionization of phenylnitrene was investigated by photoion mass-selected threshold photoelectron spectroscopy in the gas phase. Flash vacuum pyrolysis of phenyl azide at 480 °C produces the nitrene, which subsequently rearranges at higher temperatures affording three isomeric cyanocyclopentadienes, in contrast to low-temperature trapping experiments. Temperature control of the reactor and threshold photoelectron spectra allows for optimizing the generation of phenylnitrene or its thermal rearrangement products, as well as obtaining vibrational information for the corresponding ions. The adiabatic ionization energies (AIE) of the triplet nitrene (3A2) to the radical cation in its lowest-energy doublet (2B2) and quartet (4A1) spin states were determined to 8.29 ± 0.01 and 9.73 ± 0.01 eV, respectively. Vibrational frequencies of ring breathing modes were measured at 500 ± 80 and 484 ± 80 cm-1 for both the [Formula: see text](2B2) and [Formula: see text](4A1) cationic states, respectively. The AIE differ from the values previously reported; hence, we revise the doublet-quartet energy splitting of the phenylnitrene radical cation to 1.44 eV, in excellent agreement with composite methods and coupled cluster calculations, but considerably higher than the literature reference (1.1 eV).
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Affiliation(s)
- Enrique Mendez-Vega
- Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - Wolfram Sander
- Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - Patrick Hemberger
- Laboratory for Synchrotron Radiation and Femtochemistry, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
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15
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Affiliation(s)
- Ashim Nandi
- Department of Chemistry Ben-Gurion University of the Negev Beer-Sheva 841051 Israel
| | - Sebastian Kozuch
- Department of Chemistry Ben-Gurion University of the Negev Beer-Sheva 841051 Israel
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16
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Yang Y, Deng G, Lu Y, Liu Q, Abe M, Zeng X. Photodecomposition of Thienylsulfonyl Azides: Generation and Spectroscopic Characterization of Triplet Thienylsulfonyl Nitrenes and 3-Thienylnitrene. J Phys Chem A 2019; 123:9311-9320. [PMID: 31593628 DOI: 10.1021/acs.jpca.9b03740] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The photochemistry of 2-thienylsulfonyl azide (1) and 3-thienylsulfonyl azide (6) has been disclosed by combining matrix-isolation spectroscopy with quantum chemical calculations. Two novel heteroaryl sulfonyl nitrenes, 2-thienylsulfonyl nitrene (2) and 3-thienylsulfonyl nitrene (7), have been generated during the 266 nm laser photolysis of 1 and 6, respectively. Both nitrenes in the triplet ground state have been characterized with matrix-isolation IR (15N-labeling) in solid Ar (10.0 K), N2 (10.0 K), and Ne (2.8 K) matrixes and EPR spectroscopy (2, |D/hc| = 1.452 cm-1 and |E/hc| = 0.0058 cm-1; 7, |D/hc| = 1.492 cm-1 and |E/hc| = 0.0060 cm-1) in solid toluene at 5.0 K. Upon subsequent UV-light irradiation (365 nm), no Curtius rearrangement but decomposition of 2 occurs by SO2-elimination and the concurrent formation of ring-opening product (s-Z)-4-thioxo-2-butenenitrile (3) via the intermediacy of the putative 2-thienylnitrene (4). In contrast, violet-light irradiation (400 ± 20 nm) of 7 causes SO2-elimination to yield triplet 3-thienylnitrene (8), for which the IR spectroscopic identification is supported by quantum chemical calculations at the B3LYP/6-311++G(3df,3pd) level. 3-Thienylnitrene is highly reactive, since it not only combines with SO2 to furnish 3-thienyl-N-sulfonylamine (9) but also undergoes ring-opening to (s-E)-4-thioxo-2-butenenitrile (10) under the UV-light irradiation (365 nm).
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Affiliation(s)
- Yang Yang
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Guohai Deng
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Yan Lu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Qian Liu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science , Hiroshima University , 1-3-1 Kagamiyama , Higashi-Hiroshima , Hiroshima 739-8526 , Japan
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
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17
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18
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Mendez-Vega E, Mieres-Perez J, Chapyshev SV, Sander W. Persistent Organic High-Spin Trinitrenes. Angew Chem Int Ed Engl 2019; 58:12994-12998. [PMID: 31265166 PMCID: PMC7687127 DOI: 10.1002/anie.201904556] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Indexed: 11/15/2022]
Abstract
The septet ground state trinitrenes 1,3,5‐trichloro‐2,4,6‐trinitrenobenzene and 1,3,5‐tribromo‐2,4,6‐trinitrenobenzene were isolated in inert (Ar, Ne, and Xe) as well as reactive matrices (H2, O2, and H2O) at cryogenic temperatures. These trinitrenes were obtained in high yields by UV photolysis of the corresponding triazides and characterized by IR and UV/Vis spectroscopy. The trinitrenes, despite bearing six unpaired electrons, are remarkably unreactive towards molecular oxygen and hydrogen and are persistent in water ice up to 160 K where the water matrix starts to sublime off.
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Affiliation(s)
- Enrique Mendez-Vega
- Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum, 44780, Bochum, Germany
| | - Joel Mieres-Perez
- Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum, 44780, Bochum, Germany
| | - Sergei V Chapyshev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow Region, Russia
| | - Wolfram Sander
- Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum, 44780, Bochum, Germany
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19
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Mieres-Perez J, Costa P, Mendez-Vega E, Crespo-Otero R, Sander W. Switching the Spin State of Pentafluorophenylnitrene: Isolation of a Singlet Arylnitrene Complex. J Am Chem Soc 2018; 140:17271-17277. [DOI: 10.1021/jacs.8b10792] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joel Mieres-Perez
- Lehrstuhl für Organische Chemie II, Ruhr Universität Bochum, 44780 Bochum, Germany
| | - Paolo Costa
- Lehrstuhl für Organische Chemie II, Ruhr Universität Bochum, 44780 Bochum, Germany
| | - Enrique Mendez-Vega
- Lehrstuhl für Organische Chemie II, Ruhr Universität Bochum, 44780 Bochum, Germany
| | - Rachel Crespo-Otero
- School of Biological and Chemical Sciences, Queen Mary University London, Mile End Road, London E1 4NS, U.K
| | - Wolfram Sander
- Lehrstuhl für Organische Chemie II, Ruhr Universität Bochum, 44780 Bochum, Germany
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20
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Wu Z, Song C, Liu J, Lu B, Lu Y, Trabelsi T, Francisco JS, Zeng X. Photochemistry of OPN: Formation of Cyclic PON and Reversible Combination with Carbon Monoxide. Chemistry 2018; 24:14627-14630. [PMID: 29978924 DOI: 10.1002/chem.201803383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Indexed: 11/08/2022]
Abstract
Cyclic PON, a first 16-electron triatomic ring consisting of two first-row elements, has been generated through 193 nm laser photolysis of OPN in cryogenic matrices. When the photolysis (365 nm) was performed in the presence of CO, OPN combines CO and furnishes an exotic acyclic molecule OPNCO. Upon the 193 nm laser irradiation, OPNCO dissociates mainly to OPN and CO with traces of PN and CO2 . The identification of cyclic PON and OPNCO with IR spectroscopy is supported by 15 N-labeling experiments and quantum chemical calculations.
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Affiliation(s)
- Zhuang Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Chao Song
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Jie Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Bo Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yan Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | | | | | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
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21
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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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22
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Shamukaev VA, Chainikova EM, Idrisova AM, Safiullin RL. Chemiluminescent Method for Determination of Rate Constants for Reactions of Triplet Aromatic Nitrenes. HIGH ENERGY CHEMISTRY 2018. [DOI: 10.1134/s0018143918020133] [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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23
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Affiliation(s)
- Curt Wentrup
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane Qld 4072 Australien
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24
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Wentrup C. Flash Vacuum Pyrolysis: Techniques and Reactions. Angew Chem Int Ed Engl 2017; 56:14808-14835. [PMID: 28675675 DOI: 10.1002/anie.201705118] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Indexed: 12/13/2022]
Abstract
Flash vacuum pyrolysis (FVP) had its beginnings in the 1940s and 1950s, mainly through mass spectrometric detection of pyrolytically formed free radicals. In the 1960s many organic chemists started performing FVP experiments with the purpose of isolating new and interesting compounds and understanding pyrolysis processes. Meanwhile, many different types of apparatus and techniques have been developed, and it is the purpose of this review to present the most important methods as well as a survey of typical reactions and observations that can be achieved with the various techniques. This includes preparative FVP, chemical trapping reactions, matrix isolation, and low temperature spectroscopy of reactive intermediates and unstable molecules, the use of online mass, photoelectron, microwave, and millimeterwave spectroscopies, gas-phase laser pyrolysis, pulsed pyrolysis with supersonic jet expansion, very low pressure pyrolysis for kinetic investigations, solution-spray and falling-solid FVP for involatile compounds, and pyrolysis over solid supports and reagents. Moreover, the combination of FVP with matrix isolation and photochemistry is a powerful tool for investigations of reaction mechanism.
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Affiliation(s)
- Curt Wentrup
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Qld, 4072, Australia
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25
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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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26
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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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27
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Mardyukov A, Niedek D, Schreiner PR. Preparation and Characterization of Parent Phenylphosphinidene and Its Oxidation to Phenyldioxophosphorane: The Elusive Phosphorus Analogue of Nitrobenzene. J Am Chem Soc 2017; 139:5019-5022. [DOI: 10.1021/jacs.7b01639] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Artur Mardyukov
- Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Dominik Niedek
- Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R. Schreiner
- Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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28
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Affiliation(s)
- Curt Wentrup
- School of Chemistry and Molecular
Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
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29
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Deng G, Dong X, Liu Q, Li D, Li H, Sun Q, Zeng X. The decomposition of benzenesulfonyl azide: a matrix isolation and computational study. Phys Chem Chem Phys 2017; 19:3792-3799. [DOI: 10.1039/c6cp08125h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stepwise Curtius-rearrangement of benzenesulfonyl azide, PhS(O)2N3, has been proven experimentally by the direct observation of the novel intermediates sulfonyl nitrene PhS(O)2N and N-sulfonyl imine PhNSO2 and theoretically by quantum chemical calculations.
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Affiliation(s)
- Guohai Deng
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Xuelin Dong
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Qifan Liu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Dingqing Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Hongmin Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Qiao Sun
- School for Radiological and Interdisciplinary Sciences
- Soochow University
- 215123 Suzhou
- P. R. China
| | - Xiaoqing Zeng
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
- P. R. China
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30
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Mieres-Pérez J, Henkel S, Mendez-Vega E, Schleif T, Lohmiller T, Savitsky A, Sander W. Dinitreno pentaradicals: organic sextet molecules. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3621] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Joel Mieres-Pérez
- Lehrstuhl für Organische Chemie II; Ruhr-Universität Bochum; D-44780 Bochum Germany
| | - Stefan Henkel
- 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
| | - Tim Schleif
- Lehrstuhl für Organische Chemie II; Ruhr-Universität Bochum; D-44780 Bochum Germany
| | - Thomas Lohmiller
- Max-Planck-Institut für Chemische Energiekonversion; D-45470 Mülheim an der Ruhr Germany
- Lehrstuhl für Organische Chemie II; Ruhr-Universität Bochum; D-44780 Bochum Germany
| | - Anton Savitsky
- Max-Planck-Institut für Chemische Energiekonversion; D-45470 Mülheim an der Ruhr Germany
| | - Wolfram Sander
- Lehrstuhl für Organische Chemie II; Ruhr-Universität Bochum; D-44780 Bochum Germany
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31
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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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32
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Ribblett AQ, Poole JS. A Laser Flash Photolysis Study of Azo-Compound Formation from Aryl Nitrenes at Room Temperature. J Phys Chem A 2016; 120:4267-76. [PMID: 27301876 DOI: 10.1021/acs.jpca.6b03025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The species 4-nitrenopyridine 1-oxide is known to exhibit triplet nitrene dominated chemistry to yield azo-dimer products exclusively, even at room temperature. As such, this species, and its analogue 4-nitrenoquinoline 1-oxide, are useful models to probe the mechanism of formation of azo-dimers, which is postulated to proceed by self-reaction of the nitrene or reaction of nitrene with the parent azide. A laser flash photolysis study is described where the kinetics of formation of azo-dimer were found to be most adequately modeled by competition between both mechanisms, and rate coefficients for the competing reactions were determined.
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Affiliation(s)
- Alec Q Ribblett
- Department of Chemistry, Ball State University , Muncie, Indiana 47306, United States
| | - James S Poole
- Department of Chemistry, Ball State University , Muncie, Indiana 47306, United States
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