1
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Wang Z, Zhang H, Zhang P, Di K, Zhao J, Wang B, Qu J, Ye S, Yang D. Stepwise Reduction of Redox Noninnocent Nitrosobenzene to Aniline via a Rare Phenylhydroxylamino Intermediate on a Thiolate-Bridged Dicobalt Scaffold. J Am Chem Soc 2024; 146:19737-19747. [PMID: 39008833 DOI: 10.1021/jacs.4c01691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Nitrosobenzene (PhNO) and phenylhydroxylamine (PhNHOH) are of paramount importance because of their involvement as crucial intermediates in the biological metabolism and catalytic transformation of nitrobenzene (PhNO2) to aniline (PhNH2). However, a complete reductive transformation cycle of PhNO to PhNH2 via the PhNHOH intermediate has not been reported yet. In this context, we design and construct a new thiolate-bridged dicobalt scaffold that can accomplish coordination activation and reductive transformation of PhNO. Notably, an unprecedented reversible ligand-based redox sequence PhNO0 ↔ PhNO•- ↔ PhNO2- can be achieved on this well-defined {CoIII(μ-SPh)2CoIII} functional platform. Further detailed reactivity investigations demonstrate that the PhNO0 and PhNO•- complexes cannot react with the usual hydrogen and hydride donors to afford the corresponding phenylhydroxylamino (PhNHO-) species. However, the double reduced PhNO2- complex can readily undergo N-protonation with an uncommon weak proton donor PhSH to selectively yield a stable dicobalt PhNHO- bridged complex with a high pKa value of 13-16. Cyclic voltammetry shows that there are two successive reduction events at E1/2 = -0.075 V and Ep = -1.08 V for the PhNO0 complex, which allows us to determine both bond dissociation energy (BDEN-H) of 59-63 kcal·mol-1 and thermodynamic hydricity (ΔGH-) of 71-75 kcal·mol-1 of the PhNHO- complex. Both values indicate that the PhNO•- complex is not a potent hydrogen abstractor and the PhNO0 complex is not an efficient hydride acceptor. In the presence of BH3 as a combination of protons and electrons, facile N-O bond cleavage of the coordinated PhNHO- group can be realized to generate PhNH2 and a dicobalt hydroxide-bridged complex. Overall, we present the first stepwise reductive sequence, PhNO0 ↔ PhNO•- ↔ PhNO2- ↔ PhNHO- → PhNH2.
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Affiliation(s)
- Zhijie Wang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Haoyan Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Peng Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Kai Di
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jinfeng Zhao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
- State Key Laboratory of Bioreactor Engineering, Collaborative Innovation Centre for Biomanufacturing, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Shengfa Ye
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
| | - Dawei Yang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, P. R. China
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2
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Cao M, Wang Z, Hou F, Liu X, Sun S, Wang X, Liu L. Catalytic Asymmetric Access to Structurally Diverse N-Alkoxy Amines via a Kinetic Resolution Strategy. JACS AU 2024; 4:1935-1940. [PMID: 38818075 PMCID: PMC11134360 DOI: 10.1021/jacsau.4c00174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 06/01/2024]
Abstract
Chiral N-alkoxy amines are increasingly vital substrates in bioscience. However, asymmetric synthetic strategies for these compounds remain scarce. Catalytic kinetic resolution represents an attractive approach to prepare structurally diverse enantiopure N-alkoxy amines, which has remained elusive due to the notably reduced nucleophilicity of the nitrogen atom together with the low bond dissociation energies of labile NO-C and N-O bonds. We here report a general kinetic resolution of N-alkoxy amines through chemo- and enantioselective oxygenation. The mild and green titanium-catalyzed approach features broad substrate scope (55 examples), noteworthy functional group compatibility, high catalyst turnover number (up to 5200), excellent selectivity factor (s > 150), and scalability.
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Affiliation(s)
- Min Cao
- School
of Pharmaceutical Sciences & Institute of Materia Medica, Shandong First Medical University, Jinan 250117, Shandong, China
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250100, China
| | - Zehua Wang
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250100, China
| | - Fangao Hou
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250100, China
| | - Xiaoyuan Liu
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250100, China
| | - Shutao Sun
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250100, China
| | - Xinning Wang
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250100, China
| | - Lei Liu
- School
of Pharmaceutical Sciences & Institute of Materia Medica, Shandong First Medical University, Jinan 250117, Shandong, China
- School
of Chemistry and Chemical Engineering, Shandong
University, Jinan 250100, China
- Shenzhen
Research Institute of Shandong University, Shenzhen 518057, China
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3
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Di Terlizzi L, Nicchio L, Protti S, Fagnoni M. Visible photons as ideal reagents for the activation of coloured organic compounds. Chem Soc Rev 2024; 53:4926-4975. [PMID: 38596901 DOI: 10.1039/d3cs01129a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
In recent decades, the traceless nature of visible photons has been exploited for the development of efficient synthetic strategies for the photoconversion of colourless compounds, namely, photocatalysis, chromophore activation, and the formation of an electron donor/acceptor (EDA) complex. However, the use of photoreactive coloured organic compounds is the optimal strategy to boost visible photons as ideal reagents in synthetic protocols. In view of such premises, the present review aims to provide its readership with a collection of recent photochemical strategies facilitated via direct light absorption by coloured molecules. The protocols have been classified and presented according to the nature of the intermediate/excited state achieved during the transformation.
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Affiliation(s)
- Lorenzo Di Terlizzi
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Luca Nicchio
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
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4
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Qiao H, Zhao K, Zhu X, Xu X, Wang S, Yang L, Wang C, Zhong L, Ma B, Yang D, Xing P, Liu G, Jiao M. Photocatalyzed C3-H Nitrosylation of Imidazo[1,2- a]pyridine under Continuous Flow and External Photocatalyst-, Oxidant-, and Additive-Free Conditions. J Org Chem 2024. [PMID: 38753574 DOI: 10.1021/acs.joc.4c00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
This study reports a protocol for the highly regioselective photocatalyzed C-H nitrosylation of imidazo[1,2-a]pyridine scaffolds at the C3 position under a combination of visible-light irradiation and continuous flow without any external photocatalyst. This protocol involves mild and safe conditions and shows good tolerance to air and water along with excellent functional group compatibility and site selectivity, generating various 3-nitrosoimidazo[1,2-a]pyridines in excellent yields under photocatalyst-, oxidant-, and additive-free conditions.Notably, the proposed nitrosylation reaction, which introduces the chromophore NO into imidazo[1,2-a]pyridine scaffolds, occurs efficiently under visible-light irradiation without any additional photocatalyst owing to the intense light-absorption characteristics of the nitrosylation products. This study could guide future studies on the development of green organic-synthesis strategies with a wide variety of potential applications.
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Affiliation(s)
- Huijie Qiao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Kun Zhao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Xilin Zhu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Xiaoxu Xu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Shixing Wang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Liting Yang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Chunyang Wang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Lulu Zhong
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Baiwei Ma
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Dehong Yang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Peizhi Xing
- Henan Bio-based material Industry Research Institute Co., LTD, Puyang 457001, P. R. China
| | - Guoqun Liu
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
| | - Mingli Jiao
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, P. R. China
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5
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Gatarz S, Griffiths OM, Esteves HA, Jiao W, Morse P, Fisher EL, Blakemore DC, Ley SV. Nitro-sulfinate Reductive Coupling to Access (Hetero)aryl Sulfonamides. J Org Chem 2024; 89:1898-1909. [PMID: 38239107 PMCID: PMC10845164 DOI: 10.1021/acs.joc.3c02557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/30/2023] [Accepted: 01/03/2024] [Indexed: 02/03/2024]
Abstract
A method to assemble (hetero)aryl sulfonamides via the reductive coupling of aryl sulfinates and nitroarenes is reported. Various reducing conditions with sodium bisulfite and with or without tin(II) chloride in DMSO were developed using an ultrasound bath to improve reaction homogeneity and mixing. A range of (hetero)aryl sulfonamides bearing a selection of functional groups were prepared, and the mechanism of the transformation was investigated. These investigations have led us to propose the formation of nitrosoarene intermediates, which were established via an independent molecular coupling strategy.
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Affiliation(s)
- Sandra
E. Gatarz
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Cambridge CB2 1EW, U.K.
| | - Oliver M. Griffiths
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Cambridge CB2 1EW, U.K.
| | - Henrique A. Esteves
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Cambridge CB2 1EW, U.K.
| | - Wenhua Jiao
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Cambridge CB2 1EW, U.K.
| | - Peter Morse
- Medicine
Design, Pfizer, Inc., Groton, Connecticut 06340, United States
| | - Ethan L. Fisher
- Medicine
Design, Pfizer, Inc., Groton, Connecticut 06340, United States
| | | | - Steven V. Ley
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Cambridge CB2 1EW, U.K.
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6
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Malykhin RS, Aksenova SA, Sukhorukov AY. An Intramolecular Nitroso-Meerwein-Ponndorf-Verley-Oppenauer Reaction to Access Fused Pyrrolidine Scaffolds. Org Lett 2024. [PMID: 38190627 DOI: 10.1021/acs.orglett.3c03552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
δ-Hydroxy chloronitroso compounds generated in situ from 1,2-oxazine N-oxides undergo a 1,5-hydride transfer related to the Meerwein-Ponndorf-Verley-Oppenauer reaction. Based on the process discovered, a three-step access to fused pyrrolidine scaffolds containing up to four contiguous stereogenic centers starting from simple nitrostyrenes and cycloalkenes or cyclodienes has been developed. The suggested reaction mechanism was confirmed by in situ UV-vis and ATR FT-IR monitoring and DFT calculations.
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Affiliation(s)
- Roman S Malykhin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, Moscow 119991, Russian Federation
| | - Svetlana A Aksenova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str. 28, Moscow 119991, Russian Federation
- Moscow Institute of Physics and Technology (National Research University), Institutskiy per. 9, Dolgoprudny 141700, Moscow Region, Russian Federation
| | - Alexey Yu Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, Moscow 119991, Russian Federation
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7
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García-Lacuna J, Baumann M. Continuous Flow Synthesis of Nitrosoarenes via Photochemical Rearrangement of Aryl Imines. J Org Chem 2024; 89:617-623. [PMID: 38131303 PMCID: PMC10777388 DOI: 10.1021/acs.joc.3c02362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/20/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023]
Abstract
Nitrosoarenes are versatile organic building blocks; however, their intrinsic instability and limited synthetic accessibility have so far restricted their widespread use. Herein, we present a new continuous flow route toward these entities that is based on a direct photochemical rearrangement process using o-nitrophenylimines as starting materials. Due to the underlying redox mechanism, a new amide group accompanies the formation of the nitroso group. Crucial to the success of this approach is the use of trifluoroethanol as a solvent and high-power light-emitting diodes (365 nm) as light sources that provide uniform irradiation and high efficiency of the resulting continuous flow method. The process is fast and robust, with high functional group tolerance and high throughput. The formation of the nitroso moiety is supported by full spectroscopic analysis, including X-ray crystallography. The scalability of this flow approach allows access to gram quantities of nitroso species for which we highlight a small set of derivatization reactions underlining their synthetic utility.
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Affiliation(s)
- Jorge García-Lacuna
- University College Dublin, School of Chemistry, Science Centre South, Belfield, Dublin 4, Ireland
| | - Marcus Baumann
- University College Dublin, School of Chemistry, Science Centre South, Belfield, Dublin 4, Ireland
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8
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Sun Y, Zhang J, Zeng Y, Meng L, Li X. Mechanism and Stereoselectivity Control of Terminal Alkyne Dimerization Activated by a Zr/Co Heterobimetallic Complex: A DFT Study. J Org Chem 2024; 89:605-616. [PMID: 38096545 DOI: 10.1021/acs.joc.3c02359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Heterobimetallic complexes have recently garnered considerable attention in organic synthesis owing to their high activity and selectivity, which surpass those of monometallic complexes. In this study, the detailed mechanisms of terminal alkyne dimerization activated by the heterobimetallic Zr/Co complex, as well as the different stereoselectivities of Me3SiC≡CH and PhC≡CH dimerization, were investigated and elucidated by using density functional theory calculations. After excluding the three-molecule reaction and outer-sphere mechanisms, the inner-sphere mechanism was determined as the most optimal process. The inner-sphere mechanism involves four processes: THF dissociation and coordination of the first alkyne; ligand migration and C-H activation; N2 dissociation and insertion of the second alkyne; and reductive elimination. The stereoselectivity between the E-/Z- and gem-isomers is determined by the C-C coupling mode of the two alkynes and that of the E- and Z-isomers is determined by the sequence of the C-C coupling and hydrogen migration in the reductive elimination process. Me3SiC≡CH dimerization yields only an E-isomer owing to the large differences in the distortion and interaction energies, whereas PhC≡CH dimerization produces an E-, Z-, and gem-isomers owing to the reduced interaction energy differences.
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Affiliation(s)
- Yuanyuan Sun
- College of Chemistry and Material Science, Hebei Key Laboratory of Inorganic and Nano-Materials, National Demonstratin Center for Experimental Chemistry, Hebei Normal University, Shijiazhuang 050024, P. R. China
| | - Jinying Zhang
- College of Chemistry and Material Science, Hebei Key Laboratory of Inorganic and Nano-Materials, National Demonstratin Center for Experimental Chemistry, Hebei Normal University, Shijiazhuang 050024, P. R. China
| | - Yanli Zeng
- College of Chemistry and Material Science, Hebei Key Laboratory of Inorganic and Nano-Materials, National Demonstratin Center for Experimental Chemistry, Hebei Normal University, Shijiazhuang 050024, P. R. China
| | - Lingpeng Meng
- College of Chemistry and Material Science, Hebei Key Laboratory of Inorganic and Nano-Materials, National Demonstratin Center for Experimental Chemistry, Hebei Normal University, Shijiazhuang 050024, P. R. China
| | - Xiaoyan Li
- College of Chemistry and Material Science, Hebei Key Laboratory of Inorganic and Nano-Materials, National Demonstratin Center for Experimental Chemistry, Hebei Normal University, Shijiazhuang 050024, P. R. China
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9
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Cindro N, Car Ž, Petrović Peroković V, Borovina M, Panić B, Kodrin I, Biljan I. Synthesis of aromatic polynitroso compounds: Towards functional azodioxy-linked porous polymers. Heliyon 2023; 9:e21781. [PMID: 38034606 PMCID: PMC10685250 DOI: 10.1016/j.heliyon.2023.e21781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/22/2023] [Accepted: 10/27/2023] [Indexed: 12/02/2023] Open
Abstract
The polymerization property of aromatic polynitroso compounds could be used to create azodioxy porous networks with possible application for the adsorption of CO2, the main greenhouse gas. Herein, we report the synthesis and characterization of new aromatic polynitroso compounds, with para-nitroso groups attached to the triphenylbenzene, triphenylpyridine, triphenyltriazine and triphenylamine moiety. The synthesis of the pyridine-based trinitroso compound was performed by reduction of the corresponding trinitro derivative to N-arylhydroxylamine followed by oxidation to the trinitroso product. For the synthesis of the benzene- and triazine-based trinitroso compounds, a novel synthetic strategy was implemented, which included cyclotrimerization of the 4-nitrosoacetophenone and 4-nitrosobenzonitrile, respectively. Reduction of the trinitro compound with triphenylamine unit produced the dinitroso product. In a solid state, all synthesized compounds form E-azodioxy oligomers or polymers. While azodioxy polymer with triphenylbenzene moiety is an amorphous solid, other azodioxy oligomers and polymers displayed sharp diffraction peaks pointing to their crystalline nature. A computational study indicated that eclipsed AA configurations are preferred over staggered AB and inclined AA' configurations. The serrated layers may be the most likely outcome when/if 2D layers form an organized polymer network of azodioxy linked triphenyltriazine-based building blocks.
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Affiliation(s)
| | | | | | - Mladen Borovina
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
| | - Barbara Panić
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
| | - Ivan Kodrin
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
| | - Ivana Biljan
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
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10
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Winslow C, Rathke P, Rittle J. Multielectron Bond Cleavage Processes Enabled by Redox-Responsive Phosphinimide Ligands. Inorg Chem 2023; 62:17697-17704. [PMID: 37847032 PMCID: PMC10618924 DOI: 10.1021/acs.inorgchem.3c02307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Indexed: 10/18/2023]
Abstract
The activation of small molecules via multielectron redox processes offers promise in mediating difficult transformations related to energy conversion processes. While molecular systems that engage in one- and two-electron redox processes are widespread, those that participate in the direct transfer of four or more electrons to small molecules are very rare. To that end, we report a mononuclear CrII complex competent for the 4-electron reduction of dioxygen (O2) and nitrosoarenes. These systems additionally engage in facile two-electron group transfer reactivity, including O atom excision and nitrene transfer. Structural, spectroscopic, and computational studies support bond activation processes that intimately occur at a mononuclear chromium(phosphinimide) center and highlight the unusual structural responsiveness of the phosphinimides in stabilizing a range of metal redox states.
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Affiliation(s)
- Charles
C. Winslow
- Department of Chemistry, University
of California, Berkeley, California 94720, United States
| | - Paul Rathke
- Department of Chemistry, University
of California, Berkeley, California 94720, United States
| | - Jonathan Rittle
- Department of Chemistry, University
of California, Berkeley, California 94720, United States
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11
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Baily P, Del Castillo HP, Vinales I, Urbay JEM, Paez A, Weaver MR, Iturralde R, Estevao IL, Jankuru SR, Almeida IC, Li C, Dirk CW, Michael K. Synthesis and Photoreactivity of 7-Nitroindoline- S-thiocarbamates. ACS OMEGA 2023; 8:9486-9498. [PMID: 36936343 PMCID: PMC10018502 DOI: 10.1021/acsomega.2c08184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
The photolytic properties of N-acyl-7-nitroindolines make these compounds attractive as photocleavable protecting groups and "caged" compounds for the light-induced release ("uncaging") of biologically active compounds and as acylating reagents under neutral conditions. However, the synthesis of N-acyl-7-nitroindolines usually requires multiple steps, and the direct acylation of 7-nitroindolines can be quite challenging. 7-Nitroindolines with other types of N-carbonyl-containing groups may also be photoreactive and could potentially be better accessible. Here we demonstrate the short and efficient synthesis of 5-bromo-7-nitroindoline-S-thiocarbamates, a new class of photoreactive compounds, and the study of some of their photochemical and photophysical properties. Using 5-bromo-7-nitroindoline-S-ethylthiocarbamate as a model compound, we show that it can undergo one-photon and two-photon photolysis at 350 and 710 nm, respectively. Our experimental data and quantum chemistry calculations support a photolysis pathway that differs from photolysis pathways previously reported for N-acyl-7-nitroindolines. The photolysis with 350 nm light results in 5-bromo-7-nitrosoindoline, which is in equilibrium with its dimeric form(s), as supported by experiment and theory. This study expands the scope of photoreactive 7-nitroindoline derivatives and informs the development of novel photocleavable compounds.
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Affiliation(s)
- Philip
T. Baily
- Department
of Chemistry and Biochemistry, University
of Texas at El Paso, El Paso, Texas 79968, United States
| | - H. Patricio Del Castillo
- Department
of Chemistry and Biochemistry, University
of Texas at El Paso, El Paso, Texas 79968, United States
| | - Irodiel Vinales
- Department
of Chemistry and Biochemistry, University
of Texas at El Paso, El Paso, Texas 79968, United States
| | - Juan E. M. Urbay
- Department
of Chemistry and Biochemistry, University
of Texas at El Paso, El Paso, Texas 79968, United States
| | - Aurelio Paez
- Department
of Metallurgical, Materials and Biomedical Engineering, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Matthew R. Weaver
- Department
of Physics, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Roberto Iturralde
- Department
of Physics, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Igor L. Estevao
- Department
of Biological Sciences, University of Texas
at El Paso, El Paso, Texas 79968, United
States
| | - Sohan R. Jankuru
- Department
of Chemistry and Biochemistry, University
of Texas at El Paso, El Paso, Texas 79968, United States
| | - Igor C. Almeida
- Department
of Biological Sciences, University of Texas
at El Paso, El Paso, Texas 79968, United
States
| | - Chunqiang Li
- Department
of Physics, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Carl W. Dirk
- Department
of Chemistry and Biochemistry, University
of Texas at El Paso, El Paso, Texas 79968, United States
| | - Katja Michael
- Department
of Chemistry and Biochemistry, University
of Texas at El Paso, El Paso, Texas 79968, United States
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12
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Novak I. Photoionization of poly-nitrosobenzenes. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114360] [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]
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13
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Kang F, Lin Y, Zhang S, Tan Z, Wang X, Yang J, Peng YK, Zhang W, Lee CS, Huang W, Zhang Q. Polynitrosoarene Radical as an Efficient Cathode Material for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2023; 15:9431-9438. [PMID: 36753515 DOI: 10.1021/acsami.2c21559] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Organic radical batteries (ORBs) with radical-branched polymers as cathode materials represent a valuable alternative to meet the continuously increasing demand on energy storage. However, the low theoretical capacities of current radical-contained compounds strongly hamper their practical applications. To address this issue, a chemically robust polynitrosoarene (tris(4-nitrosophenyl)amine) with a pronounced radical property is rationally designed as an efficient cathode for ORBs. Its unique multi-nitroso structure displays remarkably reversible charge/discharge capability and a superior capacity up to 300 mA h g-1 (93% theoretical capacity) after 100 cycles at 100 mA g-1 within a broad potential window of 1.3-4.3 V (vs Li+/Li). Moreover, the ultra-long cycle life is also achieved at 1000 mA g-1 with 85% preservation of the capacity after 1000 cycles, making it the best-reported organic radical cathode material for lithium-ion batteries.
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Affiliation(s)
- Fangyuan Kang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, P. R. China
| | - Yilin Lin
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao, Hebei 066004, P. R. China
| | - Shiwei Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, P. R. China
| | - Zicong Tan
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR 518057, P. R. China
| | - Xiang Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, P. R. China
| | - Jinglun Yang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, P. R. China
| | - Yung-Kang Peng
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR 518057, P. R. China
| | - Wenjun Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, P. R. China
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong SAR 518057, P. R. China
| | - Chun-Sing Lee
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR 518057, P. R. China
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong SAR 518057, P. R. China
| | - Weiwei Huang
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Qinhuangdao, Hebei 066004, P. R. China
| | - Qichun Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, P. R. China
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Kowloon, Hong Kong SAR 518057, P. R. China
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14
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Nuić L, Panić B, Pereković LK, Rakić IŠ, Kralj M, Mihanović A, Vančik H, Biljan I. Polymerization of aromatic dinitroso derivatives initiated by nitroso-terminated monolayer on Au(111) surface: Insights from ellipsometry, AFM and nano-FTIR spectroscopy. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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15
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Guo YY, Tian ZH, Wang L, Lai ZD, Li L, Li YQ. Chemoenzymatic Synthesis of Phenol Diarylamine Using Non-Heme Diiron N-Oxygenase. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Yuan-Yang Guo
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Ze-Hua Tian
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Luying Wang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Zheng-De Lai
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Lingjun Li
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
| | - Yong-Quan Li
- Institute of Pharmaceutical Biotechnology, Zhejiang University School of Medicine, Hangzhou 310058, China
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16
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Synthesis, crystal structure and metal ion sensing ability of novel 4-amino-3-nitroso-2H-chromen-2-one: Interaction studies with calf thymus-DNA. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Plöger S, Mück-Lichtenfeld C, Daniliuc CG, Studer A. Azodioxy compounds as precursors for C-radicals and their application in thermal styrene difunctionalization. Chem Sci 2022; 13:9749-9754. [PMID: 36091902 PMCID: PMC9400666 DOI: 10.1039/d2sc03860a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/03/2022] [Indexed: 11/21/2022] Open
Abstract
An atom-economic thermal α,β-difunctionalization of various styrenes with readily prepared azodioxy compounds is reported. Mechanistic studies reveal that the starting azodioxy compounds can thermally be cleaved to the corresponding C-nitroso compounds, which under these thermal conditions further homolyze to generate reactive C-radicals along with the persistent NO radical. In the presence of a styrene, C-radical addition with subsequent nitrosylation followed by tautomerization is occurring, resulting in an overall styrene β-alkylation-α-oximation reaction.
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Affiliation(s)
- Stefanie Plöger
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Christian Mück-Lichtenfeld
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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18
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Ramamurthy V. Photochemistry in a capsule: controlling excited state dynamics via confinement. Chem Commun (Camb) 2022; 58:6571-6585. [PMID: 35611956 DOI: 10.1039/d2cc01758j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Exerting control on excited state processes has been a long-held goal in photochemistry. One approach to achieve control has been to mimic biological systems in Nature (e.g., photosynthesis) that has perfected it over millions of years by performing the reactions in highly organized assemblies such as membranes and proteins by restricting the freedom of reactants and directing them to pursue a select pathway. The duplication of this concept at a smaller scale in the laboratory involves the use of highly confined and organized assemblies as reaction containers. This article summarizes the studies in the author's laboratory using a synthetic, well-defined reaction container known as octa acid (OA). OA, unlike most commonly known cavitands, forms a capsule in water and remains closed during the lifetime of the excited states of included molecules. Thus, the described excited state chemistry occurs in a small space with hydrophobic characteristics. Examples where the photophysical and photochemical properties are dramatically altered, compared to that in organic solvents wherein the molecules are freely soluble, are presented to illustrate the value of a restricted environment in controlling the dynamics of molecules on an excited state surface. While the ground state complexation of the guest and host is controlled by well-known concepts of tight-fit, lock and key, complementarity, etc., free space around the guest is necessary for it to be able to undergo structural transformations in the excited state, where the time is short. This article highlights the role of free space during the dynamics of molecules within a confined, inflexible reaction cavity.
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19
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Yu L, Li W, Tapdara A, Kyne SH, Harode M, Babaahmadi R, Ariafard A, Chan PWH. Chiral Gold Complex Catalyzed Cycloisomerization/Regio- and Enantioselective Nitroso-Diels–Alder Reaction of 1,6-Diyne Esters with Nitrosobenzenes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Lei Yu
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Wenhai Li
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
- Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Anyawan Tapdara
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Sara Helen Kyne
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Mandeep Harode
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Rasool Babaahmadi
- School of Natural Sciences−Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Alireza Ariafard
- School of Natural Sciences−Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
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20
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Aquatic arsenic removal with a Zr-MOF constructed via in situ nitroso coupling. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Šutalo P, Pisačić M, Biljan I, Kodrin I. Benzene and triazine-based porous organic polymers with azo, azoxy and azodioxy linkages: a computational study. CrystEngComm 2022. [DOI: 10.1039/d2ce00186a] [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
Computational study of azoxy and azodioxy-based 2D layered structures revealed their potential for the selective binding of CO2 over N2.
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Affiliation(s)
- Petar Šutalo
- Department of Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
| | - Mateja Pisačić
- Department of Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
| | - Ivana Biljan
- Department of Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
| | - Ivan Kodrin
- Department of Chemistry, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
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22
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Bianchi P, Monbaliu JCM. Three decades of unveiling the complex chemistry of C-nitroso species with computational chemistry. Org Chem Front 2022. [DOI: 10.1039/d1qo01415c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review revisits the complex reactivity of C-nitroso derivatives through the synergistic combination of computational and synthetic organic chemistry, with an emphasis on the rationalization of mechanisms and selectivities.
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Affiliation(s)
- Pauline Bianchi
- Center for Integrated Technology and Organic Synthesis, MolSys Research Unit, University of Liège, B-4000 Liège (Sart Tilman), Belgium
| | - Jean-Christophe M. Monbaliu
- Center for Integrated Technology and Organic Synthesis, MolSys Research Unit, University of Liège, B-4000 Liège (Sart Tilman), Belgium
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23
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Zhang N, Wang XT, Xiong Z, Huang LY, Jin Y, Wang AJ, Yuan PX, He YB, Feng JJ. Hydrogen Bond Organic Frameworks as a Novel Electrochemiluminescence Luminophore: Simple Synthesis and Ultrasensitive Biosensing. Anal Chem 2021; 93:17110-17118. [PMID: 34913694 DOI: 10.1021/acs.analchem.1c04608] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nowadays, continuous efforts have been devoted to searching highly efficient electrochemiluminescence (ECL) emitters for applications in clinical diagnosis and food safety. In this work, triazinyl-based hydrogen bond organic frameworks (Tr-HOFs) were synthesized by N···H hydrogen bond self-assembly aggregation, where 6,6'-(1,4-phenylene)bis(1,3,5-triazine-2,4-diamine) (phenyDAT) was prepared via the cyclization reaction and behaved as a novel ligand. Impressively, the resulting Tr-HOFs showed strong ECL responses with highly enhanced ECL efficiency (21.3%) relative to the Ru(bpy)32+ standard, while phenyDAT hardly showed any ECL emission in aqueous phase. The Tr-HOFs innovatively worked as a new ECL luminophore to construct a label-free biosensor for assay of kanamycin (Kana). Specifically, the ECL response greatly weakened upon assembly of captured DNA with ferrocene (cDNA-Fc) onto the Tr-HOFs-modified electrode, while the ECL signals were adversely recovered by releasing linked DNA (L-DNA) from double-stranded DNA (dsDNA, hybridization of aptamer DNA (aptDNA) with L-DNA) due to the specific recognition of Kana with the aptDNA combined by the linkage of L-DNA and cDNA-Fc on the electrode. The as-built sensor showed a broadened linear range (1 nM-10 μM) and a limit of detection (LOD) down to 0.28 nM, which also displayed satisfactory results in the analysis of Kana in the milk and diluted human serum samples. This work offers a novel pathway to design an ECL emitter with organic molecules, holding great promise in biomedical analysis and food detection.
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Affiliation(s)
- Nuo Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Xin-Tao Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Zuping Xiong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Li-Yan Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Yu Jin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Ai-Jun Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Pei-Xin Yuan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Ya-Bing He
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Jiu-Ju Feng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
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24
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Varadharajan R, Kelley SA, Jayasinghe-Arachchige VM, Prabhakar R, Ramamurthy V, Blackstock SC. Organic Host Encapsulation Effects on Nitrosobenzene Monomer-Dimer Distribution and C-NO Bond Rotation in an Aqueous Solution. ACS ORGANIC & INORGANIC AU 2021; 2:175-185. [PMID: 36855459 PMCID: PMC9954408 DOI: 10.1021/acsorginorgau.1c00043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The intermolecular (monomer-dimer equilibrium) and intramolecular (C-NO and C-NMe2 rotations) dynamics of 4-nitrosocumene (1a) and 4-(N,N-dimethylamino)nitrosobenzene (1b), respectively, were found to be controlled by the medium (water) and the host environment (organic capsules and cavitands). The ability of water to shift the equilibrium toward the dimer appears to result from dipolar stabilization of the polar dimer structure and has a resemblance to water's known ability to favor organic cycloaddition reactions. In an aqueous medium, a range of organic hosts selectively include only the nitrosocumene monomer 1a. Encapsulation in the octa acid duplex (OA2) selects two 1a monomers rather than a dimer structure. Octa acid encapsulation also results in more restricted intramolecular C-N rotations of the guest 1b.
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Affiliation(s)
- Ramkumar Varadharajan
- Department
of Chemistry, University of Miami, Coral Gables, Miami, Florida 33146, United States
| | - Sarah Ariel Kelley
- Department
of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | | | - Rajeev Prabhakar
- Department
of Chemistry, University of Miami, Coral Gables, Miami, Florida 33146, United States
| | - Vaidhyanathan Ramamurthy
- Department
of Chemistry, University of Miami, Coral Gables, Miami, Florida 33146, United States,
| | - Silas C. Blackstock
- Department
of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States,
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25
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Xu S, Yang D, Wang B, Chen Y, Ye S, Qu J. Generation of a Sulfinamide Species from Facile N-O Bond Cleavage of Nitrosobenzene by a Thiolate-Bridged Diiron Complex. J Am Chem Soc 2021; 143:17374-17387. [PMID: 34617736 DOI: 10.1021/jacs.1c03542] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The activation of nitrosobenzene promoted by transition-metal complexes has gained considerable interest due to its significance for understanding biological processes and catalytic C-N bond formation processes. Despite intensive studies in the past decades, there are only limited cases where electron-rich metal centers were commonly employed to achieve the N-O or C-N bond cleavage of the coordinated nitrosobenzene. In this regard, it is significant and challenging to construct a suitable functional system for examining its unique reactivity toward reductive activation of nitrosoarene. Herein, we present a {Fe2S2} functional platform that can activate nitrosobenzene via an unprecedented iron-directed thiolate insertion into the N-O bond to selectively generate a well-defined diiron benzenesulfinamide complex. Furthermore, computational studies support a proposal that in this concerted four-electron reduction process of nitrosobenzene the iron center serves as an important electron shuttle. Notably, compared to the intact bridging nitrosoarene ligand, the benzenesulfinamide moiety has priority to convert into aniline in the presence of separate or combined protons and reductants, which may imply the formation of the sulfinamide species accelerates reduction process of nitrosoarene. The reaction pattern presented here represents a novel activation mode of nitrosobenzene realized by a thiolate-bridged diiron complex.
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Affiliation(s)
- Sunlin Xu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Dawei Yang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China
| | - Yifeng Chen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Centre for Biomanufacturing, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China.,School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Shengfa Ye
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P.R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P.R. China.,State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Centre for Biomanufacturing, Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China
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26
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Singh H, MacKay A, Sheibany N, Chen F, Mosser M, Rouet PÉ, Rousseau F, Askari MS, Ottenwaelder X. Intramolecular H-bond stabilization of a primary hydroxylamine in salen-type metal complexes. Chem Commun (Camb) 2021; 57:10403-10406. [PMID: 34545379 DOI: 10.1039/d1cc03077a] [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
Primary hydroxylamines, RNHOH, decompose readily in the presence of transition metal ions. We show that this reactivity can be arrested by ligand design via an intramolecular hydrogen bond. Six metal complexes with an intact NHOH group were synthesized and crystallographically characterized. The Cu-hydroxylamine complexes can catalyze the aerobic oxidation of benzylic alcohols.
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Affiliation(s)
- Hardeep Singh
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
| | - Alyson MacKay
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
| | - Nooshin Sheibany
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
| | - Fei Chen
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
| | - Maëlle Mosser
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
| | - Pierre-Étienne Rouet
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
| | - Frédéric Rousseau
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
| | - Mohammad S Askari
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
| | - Xavier Ottenwaelder
- Department of Chemistry and Biochemistry, Concordia University, Montreal, QC, Canada.
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27
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Dhara D, Pal PK, Dolai R, Chrysochos N, Rawat H, Elvers BJ, Krummenacher I, Braunschweig H, Schulzke C, Chandrasekhar V, Priyakumar UD, Jana A. Synthesis and reactivity of NHC-coordinated phosphinidene oxide. Chem Commun (Camb) 2021; 57:9546-9549. [PMID: 34546278 DOI: 10.1039/d1cc04421d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Here we report the synthesis of an N-heterocyclic carbene (NHC)-stabilised phosphinidene oxide by the controlled oxygenation of a phosphinidene under ambient conditions. This compound can be further oxygenated to a phosphinidene dioxide. The stoichiometric reduction of a phosphinidene oxide with KC8 resembles the pinacol coupling reaction-the reduction of a carbonyl compound. We also looked at the stoichiometric oxidation of NHC-coordinated phosphinidene, phosphinidene oxide and phosphinidene dioxide with [NO][SbF6].
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Affiliation(s)
- Debabrata Dhara
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Pradeep Kumar Pal
- International Institute of Information Technology, Gachibowli, Hyderabad-500032, India.
| | - Ramapada Dolai
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Nicolas Chrysochos
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Straße 4, Greifswald D-17489, Germany.
| | - Hemant Rawat
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Benedict J Elvers
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Straße 4, Greifswald D-17489, Germany.
| | - Ivo Krummenacher
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany.
| | - Holger Braunschweig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany.
| | - Carola Schulzke
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Straße 4, Greifswald D-17489, Germany.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India. .,Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - U Deva Priyakumar
- International Institute of Information Technology, Gachibowli, Hyderabad-500032, India.
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
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28
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Chen C, Daniliuc CG, Kehr G, Erker G. Formation and Cycloaddition Reactions of a Reactive Boraalkene Stabilized Internally by N-Heterocyclic Carbene. Angew Chem Int Ed Engl 2021; 60:19905-19911. [PMID: 34219331 DOI: 10.1002/anie.202106724] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/28/2021] [Indexed: 01/07/2023]
Abstract
The synthesis of element-carbon double bonds is of great importance for the development and understanding of reactive π-bonded systems in chemistry. The seven-membered heterocyclic system 4 b is readily made by internal C-H activation at a pendent isopropyl methyl group of the respective [(IPr)C6 F5 BH]+ borenium ion. Subsequent deprotonation with the IMes carbene gives the neutral cyclic boraalkene system 5 b. The B=C double bond in compound 5 b adds carbon dioxide, CS2 , sulfur dioxide, phenyl isocyanate, an acetylenic ester or two NO molecules to give the corresponding four-membered ring annulated heterocycles. With sulfur or selenium 5 b gives the respective three-membered ring systems. N2 O reacts with 5 b to give a mixture of the related oxaborirane 18 and a unique [B]OH containing diazoalkane product 19.
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Affiliation(s)
- Chaohuang Chen
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
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29
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Chen C, Daniliuc CG, Kehr G, Erker G. Formation and Cycloaddition Reactions of a Reactive Boraalkene Stabilized Internally by
N
‐Heterocyclic Carbene. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106724] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Chaohuang Chen
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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30
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Silva TL, Do Nascimento TA, De Almeida AKA, Melo SMG, Da Silva JCS, Xavier JA, Xavier AFA, Santos DC, Wadhawan J, Emery FS, Goulart MOF. Decorating BODIPY with Electron‐Withdrawing NO Group: Spectroelectrochemical Consequences and Computational Investigation. ChemElectroChem 2021. [DOI: 10.1002/celc.202100609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thaissa L. Silva
- Instituto de Química e Biotecnologia Universidade Federal de Alagoas Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins 57072-970 Maceió, AL Brazil
- Núcleo de Ciências Exatas – NCEx Universidade Federal de Alagoas Campus de Arapiraca Arapiraca – AL 57309-005 Brazil
| | - Tamires A. Do Nascimento
- Instituto de Química e Biotecnologia Universidade Federal de Alagoas Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins 57072-970 Maceió, AL Brazil
| | - Andresa K. A. De Almeida
- Instituto de Química e Biotecnologia Universidade Federal de Alagoas Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins 57072-970 Maceió, AL Brazil
| | - Shaiani M. G. Melo
- Departamento de Ciências Farmacêuticas Faculdade de Ciências Farmacêuticas de Ribeirão Preto Universidade de São Paulo Ribeirão Preto SP, 14040-903 Brazil
| | - Julio C. S. Da Silva
- Instituto de Química e Biotecnologia Universidade Federal de Alagoas Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins 57072-970 Maceió, AL Brazil
| | - Jadriane A. Xavier
- Instituto de Química e Biotecnologia Universidade Federal de Alagoas Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins 57072-970 Maceió, AL Brazil
| | - André F. A. Xavier
- Instituto de Química e Biotecnologia Universidade Federal de Alagoas Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins 57072-970 Maceió, AL Brazil
| | - Danyelle C. Santos
- Instituto de Química e Biotecnologia Universidade Federal de Alagoas Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins 57072-970 Maceió, AL Brazil
| | - Jay Wadhawan
- Hull University Department of Chemical Engineering Cottingham Road Hull HU6 7RX United Kingdom
| | - Flavio S. Emery
- Departamento de Ciências Farmacêuticas Faculdade de Ciências Farmacêuticas de Ribeirão Preto Universidade de São Paulo Ribeirão Preto SP, 14040-903 Brazil
| | - Marilia O. F. Goulart
- Instituto de Química e Biotecnologia Universidade Federal de Alagoas Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins 57072-970 Maceió, AL Brazil
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31
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Elamri I, Abdellaoui C, Bains JK, Hohmann KF, Gande SL, Stirnal E, Wachtveitl J, Schwalbe H. Wavelength-Selective Uncaging of Two Different Photoresponsive Groups on One Effector Molecule for Light-Controlled Activation and Deactivation. J Am Chem Soc 2021; 143:10596-10603. [PMID: 34236854 DOI: 10.1021/jacs.1c02817] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Photocleavable protecting groups (PPGs) play a pivotal role in numerous studies. They enable controlled release of small effector molecules to induce biochemical function. The number of PPGs attached to a variety of effector molecules has grown rapidly in recent years satisfying the high demand for new applications. However, until now molecules carrying PPGs have been designed to activate function only in a single direction, namely the release of the effector molecule. Herein, we present the new approach Two-PPGs-One-Molecule (TPOM) that exploits the orthogonal photolysis of two photoprotecting groups to first release the effector molecule and then to modify it to suppress its induced effect. The moiety resembling the tyrosyl side chain of the translation inhibitor puromycin was synthetically modified to the photosensitive ortho-nitrophenylalanine that cyclizes upon near UV-irradiation to an inactive puromycin cinnoline derivative. Additionally, the modified puromycin analog was protected by the thio-coumarylmethyl group as the second PPG. This TPOM strategy allows an initial wavelength-selective activation followed by a second light-induced deactivation. Both photolysis processes were spectroscopically studied in the UV/vis- and IR-region. In combination with quantum-chemical calculations and time-resolved NMR spectroscopy, the photoproducts of both activation and deactivation steps upon illumination were characterized. We further probed the translation inhibition effect of the new synthesized puromycin analog upon light activation/deactivation in a cell-free GFP translation assay. TPOM as a new method for precise triggering activation/deactivation of effector molecules represents a valuable addition for the control of biological processes with light.
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Affiliation(s)
- Isam Elamri
- Institute of Organic Chemistry and Chemical Biology, Goethe-University Frankfurt, Frankfurt am Main 60438, Germany
| | - Chahinez Abdellaoui
- Institute of Physical and Theoretical Chemistry, Goethe-University Frankfurt, Frankfurt am Main 60438, Germany
| | - Jasleen Kaur Bains
- Institute of Organic Chemistry and Chemical Biology, Goethe-University Frankfurt, Frankfurt am Main 60438, Germany
| | - Katharina Felicitas Hohmann
- Institute of Organic Chemistry and Chemical Biology, Goethe-University Frankfurt, Frankfurt am Main 60438, Germany
| | - Santosh Lakshmi Gande
- Institute of Organic Chemistry and Chemical Biology, Goethe-University Frankfurt, Frankfurt am Main 60438, Germany
| | - Elke Stirnal
- Institute of Organic Chemistry and Chemical Biology, Goethe-University Frankfurt, Frankfurt am Main 60438, Germany
| | - Josef Wachtveitl
- Institute of Physical and Theoretical Chemistry, Goethe-University Frankfurt, Frankfurt am Main 60438, Germany
| | - Harald Schwalbe
- Institute of Organic Chemistry and Chemical Biology, Goethe-University Frankfurt, Frankfurt am Main 60438, Germany
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32
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Schmiegel CJ, Berg P, Obst F, Schoch R, Appelhans D, Kuckling D. Continuous Flow Synthesis of Azoxybenzenes by Reductive Dimerization of Nitrosobenzenes with Gel‐Bound Catalysts. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Carsten J. Schmiegel
- Department of Chemistry, Faculty of Science Paderborn University Warburger Str. 100 33098 Paderborn Germany
| | - Patrik Berg
- Department of Chemistry, Faculty of Science Paderborn University Warburger Str. 100 33098 Paderborn Germany
| | - Franziska Obst
- Leibniz Institute for Polymer Research Dresden Hohe Str. 6 01069 Dresden Germany
| | - Roland Schoch
- Department of Chemistry, Faculty of Science Paderborn University Warburger Str. 100 33098 Paderborn Germany
| | - Dietmar Appelhans
- Leibniz Institute for Polymer Research Dresden Hohe Str. 6 01069 Dresden Germany
| | - Dirk Kuckling
- Department of Chemistry, Faculty of Science Paderborn University Warburger Str. 100 33098 Paderborn Germany
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33
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Gallo G, Mihanović A, Rončević I, Dinnebier R, Vančik H. Crystal structure and ON-OFF polymerization mechanism of poly(1,4-phenyleneazine-N,N-dioxide), a possible wide bandgap semiconductor. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123235] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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34
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Bibulić P, Rončević I, Špadina M, Biljan I, Vančik H. Isothermal and Isoconversional Modeling of Solid-State Nitroso Polymerization. J Phys Chem A 2020; 124:10726-10735. [PMID: 33305959 DOI: 10.1021/acs.jpca.0c08382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The solid-state formation of azodioxide polymers from aromatic dinitroso compounds with different spacer groups was used as a model reaction for a comprehensive analysis that included bulk-based, mechanistic, and isoconversional kinetic methods. Dinitroso species were prepared in situ from azodioxides by UV cleavage under cryogenic conditions, after which their thermally induced conversion to azodioxides was followed by Fourier transform IR spectroscopy. The obtained data were used to calculate activation parameters and determine the influence of the spacer on the kinetics. Isoconversional models suggest a distribution of activation energies, pointing to an important (topochemical) effect of the local environment on the reactivity. In general, bulk-based and isoconversional kinetic models gave poorer fits but produced mutually consistent rate parameters. Similar energies and entropies of activation were obtained with all three approaches, suggesting that they all describe the same underlying physical phenomena; that is, the polymerization by bond-making is the dominant process.
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Affiliation(s)
- Petar Bibulić
- Faculty of Science, Department of Chemistry, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Igor Rončević
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 16610 Prague 6, Czech Republic
| | - Mario Špadina
- Faculty of Science, Department of Chemistry, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia.,Group for Computational Life Sciences, Division of Physical Chemistry, Ruđer Boskovic Institute, 10000 Zagreb, Croatia
| | - Ivana Biljan
- Faculty of Science, Department of Chemistry, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Hrvoj Vančik
- Faculty of Science, Department of Chemistry, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
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35
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Purkait A, Saha S, Ghosh S, Jana CK. Lewis acid catalyzed reactivity switch: pseudo three-component annulation of nitrosoarenes and (epoxy)styrenes. Chem Commun (Camb) 2020; 56:15032-15035. [PMID: 33188668 DOI: 10.1039/d0cc02650f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Lewis acid catalyzed annulation reaction via arene functionalization of nitrosoarenes and C-C cleavage of (epoxy)styrene to provide arylquinolines is reported. The Lewis acid catalyst altered the annulation pattern providing arylquinolines instead of oxazolidines. The reaction with styrene resulted in a mixture of 2,4-diarylquinoline and 4-arylquinoline, while only 3-arylquinoline was formed from the reaction of epoxystyrene.
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Affiliation(s)
- Anisha Purkait
- Department of Chemistry, Indian Institute of Technology, Guwahati, 781039, India.
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36
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Volpe C, Meninno S, Roselli A, Mancinelli M, Mazzanti A, Lattanzi A. Nitrone/Imine Selectivity Switch in Base‐Catalysed Reaction of Aryl Acetic Acid Esters with Nitrosoarenes: Joint Experimental and Computational Study. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Chiara Volpe
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Angelo Roselli
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
| | - Michele Mancinelli
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno Via Giovanni Paolo II, 132 84084 Fisciano Italy
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37
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Exceptional bifurcated chalcogen bonding interaction between Ph2N2O2 and only one σ–hole on XCY (X=S, Se, Te and Y=O, S, Se, Te): a DFT study. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02669-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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38
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Wuest JD. Atoms and the void: modular construction of ordered porous solids. Nat Commun 2020; 11:4652. [PMID: 32938928 PMCID: PMC7495421 DOI: 10.1038/s41467-020-18419-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/21/2020] [Indexed: 11/21/2022] Open
Abstract
For millennia, humans have exploited the special properties of porous materials. Advances in recent years have yielded a new generation of finely structured porous materials that allow processes to be controlled at the molecular level. These materials are built by a strategy of modular construction, using molecular components designed to position their neighbors in ways that create predictable voids.
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Affiliation(s)
- James D Wuest
- Département de Chimie, Université de Montréal, Montréal, QC, H2V 0B3, Canada.
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39
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Mardyukov A, Keul F, Schreiner PR. Isolation and Characterization of the Free Phenylphosphinidene Chalcogenides C
6
H
5
P=O and C
6
H
5
P=S, the Phosphorous Analogues of Nitrosobenzene and Thionitrosobenzene. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Artur Mardyukov
- Institute of Organic Chemistry Justus Liebig University Heinrich-Buff-Ring 17 35392 Giessen Germany
| | - Felix Keul
- 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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40
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Mardyukov A, Keul F, Schreiner PR. Isolation and Characterization of the Free Phenylphosphinidene Chalcogenides C 6 H 5 P=O and C 6 H 5 P=S, the Phosphorous Analogues of Nitrosobenzene and Thionitrosobenzene. Angew Chem Int Ed Engl 2020; 59:12445-12449. [PMID: 32311208 PMCID: PMC7384188 DOI: 10.1002/anie.202004172] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/17/2020] [Indexed: 01/07/2023]
Abstract
The structures and reactivities of organic phosphinidene chalcogenides have been mainly inferred from trapping or complexation experiments. Phosphinidene chalcogenide derivatives appear to be an elusive family of molecules that have been suggested as reactive intermediates in multiple organophosphorus reactions. The quest to isolate "free" phosphinidene chalcogenides remains a challenge in the field. Here, we present the synthesis, IR, and UV/Vis spectroscopic identification of hitherto elusive phenylphosphinidene oxide and phenylphosphinidene sulfide from the corresponding phosphonic diazide precursors. We isolated these higher congeners of nitroso- and thionitrosobenzene in argon matrices at 10 K. The spectral assignments are supported by B3LYP/6-311++G(3df,3pd) and MP2/cc-pVTZ computations.
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Affiliation(s)
- Artur Mardyukov
- Institute of Organic ChemistryJustus Liebig UniversityHeinrich-Buff-Ring 1735392GiessenGermany
| | - Felix Keul
- Institute of Organic ChemistryJustus Liebig UniversityHeinrich-Buff-Ring 1735392GiessenGermany
| | - Peter R. Schreiner
- Institute of Organic ChemistryJustus Liebig UniversityHeinrich-Buff-Ring 1735392GiessenGermany
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41
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Yahaya A, Babatunde D, Olaniyan LW, Agboola O. Application of chromatographic techniques in the analysis of total nitrosamines in water. Heliyon 2020; 6:e03447. [PMID: 32154411 PMCID: PMC7056657 DOI: 10.1016/j.heliyon.2020.e03447] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 02/03/2020] [Accepted: 02/14/2020] [Indexed: 11/28/2022] Open
Abstract
The use of ozone, chloramine and chlorine dioxide for water treatment results in the formation N-nitrosamines in the treated water. These groups of chemicals and other nitrogen-containing compounds have been described as disinfection by-products (DBPs) which are known for their toxicity. Nitrosamines are a potential source of nitric oxide (NO) which can bind with metals present in the sample matrix leading to formation of metal - nitrosyl complexes and dissolved metals have the potential to increase the total nitrosamines in water. This phenomenon has not received the desired attention and determination of metal-nitrosyl complexes lack standard analytical technique. Chromatography linked to various detectors is the commonest of the techniques for nitrosamine analysis but it is beset with reduced sensitivity as a result of inappropriate choice of the column. Incidentally, chromatographic techniques have not been really adapted for the analysis of metal-nitrosyl complexes. Therefore, there is need for the survey of existing techniques vis-à-vis metal-nitrosamine analysis and to suggest possible areas for method optimization.
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Affiliation(s)
- Abdulrazaq Yahaya
- Department of Chemistry, Kogi State University, Anyigba, Kogi State, Nigeria
- Department of Environmental, Water and Earth Science, Faculty of Science, Arcadia Campus, Tshwane University of Technology, Pretoria, South Africa
| | | | - Lamidi W.B. Olaniyan
- Biochemistry Department, Faculty of Basic Medical Sciences, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Oluranti Agboola
- Department of Chemical Engineering, Covenant University, Ota, Nigeria
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42
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Chan SC, Wong CY. Recent developments in ruthenium–nitrosoarene chemistry: Unconventional synthetic strategies, new ligand designs, and exploration of ligands redox non-innocence. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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43
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Pike SJ, Heliot A, Seaton CC. ortho-Substituent effect on the crystal packing and solid state speciation of aromatic C-nitroso compounds. CrystEngComm 2020. [DOI: 10.1039/d0ce00728e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The solid state behaviour of a short series aromaticC-nitroso compounds has been studied as a function of the electronic and steric nature of theortho-substituent on the ring.
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Affiliation(s)
- Sarah J. Pike
- School of Chemistry
- University of Birmingham
- Birmingham
- UK
- School of Chemistry and Biosciences
| | - Armelle Heliot
- School of Chemistry and Biosciences
- Faculty of Life Sciences
- University of Bradford
- Bradford
- UK
| | - Colin C. Seaton
- School of Chemistry and Biosciences
- Faculty of Life Sciences
- University of Bradford
- Bradford
- UK
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44
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Affiliation(s)
- Dongyang Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- Shenzhen Grubbs Institute, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Masilamani Tamizmani
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xuebing Leng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Liang Deng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- Shenzhen Grubbs Institute, Southern University of Science and Technology Shenzhen Guangdong 518055 China
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45
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Ching ME, Lee JJ, Wu JP, Andry JJ, Tillman ES. Effect of Aromatic Co‐Solvents on the Efficiency of Atom Transfer Radical Coupling Reactions of Fluorinated and Non‐Fluorinated Vinyl Aromatic Polymers. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900319] [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)
- Megan E. Ching
- Department of Chemistry and Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA
| | - Jaenic J. Lee
- Department of Chemistry and Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA
| | - Jessica P. Wu
- Department of Chemistry and Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA
| | - Joseph J. Andry
- Department of Chemistry and Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA
| | - Eric S. Tillman
- Department of Chemistry and Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA
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46
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Ford RL, Alt I, Jana N, Driver TG. Intramolecular Pd-Catalyzed Reductive Amination of Enolizable sp 3-C-H Bonds. Org Lett 2019; 21:8827-8831. [PMID: 31613113 DOI: 10.1021/acs.orglett.9b03458] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium-catalyzed reductive cyclization of nitroarenes has been designed to construct sp3-C-NHAr bonds from sp3-C-H bonds by using an enolizable nucleophile to intercept a nitrosoarene intermediate. Exposure of ortho-substituted nitroarenes to 5 mol % of Pd(OAc)2 and 10 mol % of phenanthroline under 2 atm of CO constructs partially saturated 5-, 6-, or 7-membered N-heterocycles using α-pyridyl carboxylates, malonates, 1,3-dimethylbarbituric acid, 1,3-diones, or difurans as the nucleophile.
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Affiliation(s)
- Russell L Ford
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Isabel Alt
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States.,Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , DE-70569 Stuttgart , Germany
| | - Navendu Jana
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Tom G Driver
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
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47
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Kamatham N, Raj AM, Givens RS, Da Silva JP, Ramamurthy V. Supramolecular photochemistry of encapsulated caged ortho-nitrobenzyl triggers. Photochem Photobiol Sci 2019; 18:2411-2420. [PMID: 31347647 DOI: 10.1039/c9pp00260j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
ortho-Nitrobenzyl (oNB) triggers have been extensively used to release various molecules of interest. However, the toxicity and reactivity of the spent chromophore, o-nitrosobenzaldehyde, remains an unaddressed difficulty. In this study we have applied the well-established supramolecular photochemical concepts to retain the spent trigger o-nitrosobenzaldehyde within the organic capsule after release of water-soluble acids and alcohols. The sequestering power of organic capsules for spent chromophores during photorelease from ortho-nitrobenzyl esters, ethers and alcohols is demonstrated with several examples.
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Emhoff KA, Balaraman L, Salem AM, Mudarmah KI, Boyd WC. Coordination chemistry of organic nitric oxide derivatives. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.06.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Le T, Courant T, Merad J, Allain C, Audebert P, Masson G. Aerobic Tetrazine‐Catalyzed Oxidative Nitroso‐Diels‐Alder Reaction of N‐Arylhydroxylamines with Dienecarbamates: Access to Functionalized 1,6‐Dihydro‐1,2‐oxazines. ChemCatChem 2019. [DOI: 10.1002/cctc.201901373] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tuan Le
- Institut de Chimie des Substances Naturelles CNRS UPR 2301Université Paris-Sud Gif-sur-Yvette Cedex 91198 France
- PPSM ENS Cachan CNRSUniversité Paris-Saclay Cachan 94235 France
| | - Thibaut Courant
- Institut de Chimie des Substances Naturelles CNRS UPR 2301Université Paris-Sud Gif-sur-Yvette Cedex 91198 France
| | - Jérémy Merad
- Institut de Chimie des Substances Naturelles CNRS UPR 2301Université Paris-Sud Gif-sur-Yvette Cedex 91198 France
| | - Clémence Allain
- PPSM ENS Cachan CNRSUniversité Paris-Saclay Cachan 94235 France
| | - Pierre Audebert
- PPSM ENS Cachan CNRSUniversité Paris-Saclay Cachan 94235 France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles CNRS UPR 2301Université Paris-Sud Gif-sur-Yvette Cedex 91198 France
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Photolysis of dimethoxynitrobenzyl-"caged" acids yields fluorescent products. Sci Rep 2019; 9:13421. [PMID: 31530869 PMCID: PMC6748988 DOI: 10.1038/s41598-019-49845-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 08/28/2019] [Indexed: 01/22/2023] Open
Abstract
Carboxylic acids conjugated with 4,5-dimethoxy-2-nitrobenzyl photoremovable protecting group are well known and widely used for biological studies. In this paper, we study the photolysis of likewise “caged” acetic, caprylic and arachidonic acids. Unexpectedly, we observed huge growth of fluorescence emission at ~430 nm during photolysis. Following further UV irradiation, a product with fluorescence at longer wavelength was formed (470 nm excitation / ~500–600 nm emission). While it may be used to monitor the “uncaging”, these fluorescent products may interfere with widespread dyes such as fluorescein in biomedical experiments. This effect might be negligible if the photolysis products dissolve in the medium. On the other hand, we observed that arachidonic and caprylic acids derivatives self-organize in emulsion droplets in water environment due to long lipophilic chains. Illumination of droplets by UV rapidly induces orange fluorescence excited by 488 nm light. This fluorescence turn-on was fast (~0.1 s) and apparently caused by the accumulation of water-insoluble fluorescent residuals inside droplets. These self-organized lipophilic structures with fluorescence turn-on capability may be of interest for biomedical and other application. We have identified and hypothesized some compounds which may be responsible for the observed fluorescense.
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