1
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Tang Z, Kong Y, Qin Y, Chen X, Liu M, Shen L, Kang Y, Gao P. Performance and degradation pathway of florfenicol antibiotic by nitrogen-doped biochar supported zero-valent iron and zero-valent copper: A combined experimental and DFT study. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132172. [PMID: 37523963 DOI: 10.1016/j.jhazmat.2023.132172] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/10/2023] [Accepted: 07/26/2023] [Indexed: 08/02/2023]
Abstract
Fluorinated compounds are a class of organic substances resistant to degradation. Although zero-valent iron (Fe0) has a promising reducing capability, it still fails to degrade fluorine-containing antibiotics (i.e., florfenicol) efficiently. In this study, we applied a simple one-pot pyrolytic approach to synthesize nitrogen-doped biochar supported Fe0 and zero-valent copper (Cu0) composite (Fe/Cu@NBC) and investigated its performance on florfenicol removal. The results clearly showed that approximately 91.4% of florfenicol in the deionized water was removed by Fe/Cu@NBC within 8 h. As the reaction time was extended to 15 d, the total degradation rate of florfenicol reached 96.6%, in which the defluorination and dechlorination rates were 73.2% and 82.1%, respectively. Both experimental results and density functional theory calculation suggested that ∙OH and ·O2- triggered β-fluorine elimination, resulting in defluorination prior to dechlorination. This new finding was distinct from previous viewpoints that defluorination was more difficult to occur than dechlorination. Fe/Cu@NBC also had a favorable performance for removal of florfenicol in surface water. This study provides a new insight into the degradation mechanism and pathway of florfenicol removal in the Fe/Cu@NBC system, which can be a promising alternative for remediation of fluorinated organic compounds in the environment.
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Affiliation(s)
- Zheng Tang
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yifan Kong
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yan Qin
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xiaoqian Chen
- Bioassay and Safety Assessment Laboratory, Shanghai Academy of Public Measurement, 201203 Shanghai, China
| | - Min Liu
- Bioassay and Safety Assessment Laboratory, Shanghai Academy of Public Measurement, 201203 Shanghai, China
| | - Lu Shen
- Bioassay and Safety Assessment Laboratory, Shanghai Academy of Public Measurement, 201203 Shanghai, China
| | - Yanming Kang
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Pin Gao
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; National & Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou 215009, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agroenvironmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China.
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2
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Durán R, Barrales-Martínez C, Matute RA. Hidden intermediate activation: a concept to elucidate the reaction mechanism of the Schmittel cyclization of enyne-allenes. Phys Chem Chem Phys 2023; 25:6050-6059. [PMID: 36458512 DOI: 10.1039/d2cp04684a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The mechanistic paradigm in which the Schmittel cyclization transitions from one-step to stepwise has been investigated through the stabilization of a full hidden intermediate in the framework of the Diabatic Model of Intermediate Stabilization. Hidden intermediate activation was studied in silico employing quasi-classical trajectories and the Electron Localization Function. The stabilization of hidden intermediates achieved by substituting enyne-allenes with cyano and nitro groups generates the appearance of a partially hidden and an explicit intermediate, leading to one-step asynchronous biradical and stepwise biradical/zwitterionic mechanisms, respectively. The mechanistic feature associated with the activation level of the hidden intermediate arises from the Thornton effect and non-RRKM dynamics, where in the case of the CN-substituted system, despite having a single transition state, 54% of the effective trajectories remain in the intermediate zone after 540 fs, indicating that a mixture of mechanisms is observed.
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Affiliation(s)
- Rocío Durán
- Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, Campus Lircay, Talca 3460000, Chile. .,Instituto de Investigación Interdisciplinaria (I3), Universidad de Talca, Campus Lircay, Talca 3460000, Chile
| | - César Barrales-Martínez
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone 1007, Independencia, Santiago 8380492, Chile.,Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, General Gana 1702, Santiago 8370854, Chile.
| | - Ricardo A Matute
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, General Gana 1702, Santiago 8370854, Chile. .,Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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3
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García-Aznar P, Escorihuela J. Computational insights into the inverse electron-demand Diels-Alder reaction of norbornenes with 1,2,4,5-tetrazines: norbornene substituents' effects on the reaction rate. Org Biomol Chem 2022; 20:6400-6412. [PMID: 35876298 DOI: 10.1039/d2ob01121b] [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
The study of the reaction rates and mechanism of click chemistry reactions still remains an interesting challenge in organic chemistry. In this regard, the inverse electron demand Diels-Alder (IEDDA) reaction represents a promising metal-free alternative with enhanced reaction rates compared to other reactions of the click chemistry toolbox. Among the different types of dienophiles used in the IEDDA reactions, norbornenes have been widely used given their high stability and fast reaction rates. The inverse electron-demand Diels Alder reaction of 3,6-dipyridin-2-yl-1,2,4,5-tetrazine with a series of norbornene derivatives was studied with quantum mechanical calculations at the M06-2X/6-311+G(d,p) level of theory. The theoretical predictions were confirmed with the experimental data and analyzed with the use of the distortion/interaction model. The obtained results will help in obtaining a better understanding of the factors that affect the relative cycloaddition rates of norbornenes with tetrazines, which are crucial for selectively tuning their efficacy.
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Affiliation(s)
- Pablo García-Aznar
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Avda. Vicente Andrés Estellés, s/n, Burjassot 46100, València, Spain.
| | - Jorge Escorihuela
- Departamento de Química Orgánica, Facultad de Farmacia, Universitat de València, Avda. Vicente Andrés Estellés, s/n, Burjassot 46100, València, Spain.
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4
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Zhao H, Caldora HP, Turner O, Douglas JJ, Leonori D. A Desaturative Approach for Aromatic Aldehyde Synthesis via Synergistic Enamine, Photoredox and Cobalt Triple Catalysis. Angew Chem Int Ed Engl 2022; 61:e202201870. [PMID: 35196413 PMCID: PMC9311220 DOI: 10.1002/anie.202201870] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Indexed: 11/05/2022]
Abstract
Aromatic aldehydes are fundamental intermediates that are widely utilised for the synthesis of important materials across the broad spectrum of chemical industries. Accessing highly substituted derivatives can often be difficult as their functionalizations are generally performed via electrophilic aromatic substitution, SEAr. Here we provide an alternative and mechanistically distinct approach whereby aromatic aldehydes are assembled from saturated precursors via a desaturative process. This novel strategy harnesses the high‐fidelity of Diels–Alder cycloadditions to quickly construct multi‐substituted cyclohexenecarbaldehyde cores which undergo desaturation via the synergistic interplay of enamine, photoredox and cobalt triple catalysis.
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Affiliation(s)
- Huaibo Zhao
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Henry P Caldora
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Oliver Turner
- Oncology R&DI Medicinal Chemistry, AstraZeneca, Darwin Building, Unit 310, Cambridge Science Park, Milton Road, Cambridge, CB4 0WG, UK
| | - James J Douglas
- Early Chemical Development, Pharmaceutical Sciences R&D, AstraZeneca, Macclesfield, UK
| | - Daniele Leonori
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.,Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
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5
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Zhao H, Caldora HP, Turner O, Douglas JJ, Leonori D. A Desaturative Approach for Aromatic Aldehyde Synthesis via Synergistic Enamine, Photoredox and Cobalt Triple Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Huaibo Zhao
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Henry P. Caldora
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Oliver Turner
- Oncology R&DI Medicinal Chemistry, AstraZeneca Darwin Building, Unit 310, Cambridge Science Park, Milton Road Cambridge CB4 0WG UK
| | - James J. Douglas
- Early Chemical Development, Pharmaceutical Sciences R&D AstraZeneca Macclesfield UK
| | - Daniele Leonori
- Department of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52056 Aachen Germany
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6
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Yanagi T, Yorimitsu H. Mechanistic Investigation of a Synthetic Route to Biaryls by the Sigmatropic Rearrangement of Arylsulfonium Species. Chemistry 2021; 27:13450-13456. [PMID: 34322930 DOI: 10.1002/chem.202101735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Indexed: 12/26/2022]
Abstract
A comprehensive mechanistic investigation was conducted on the coupling reaction of aryl sulfoxides with phenols by using trifluoroacetic anhydride to yield biaryls. NMR experiments revealed that our previously proposed mechanism, which consists of a cascade of an interrupted Pummerer reaction and a rate-determining [3,3] sigmatropic rearrangement, is reasonable. The electronic effects of the substrates were also evaluated to elucidate the nature of the rearrangement step. Based on experimental observations and theoretical calculations, we conclude that the rearrangement is highly asynchronous and stepwise rather than concerted when electron-rich phenols are employed for the reaction.
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Affiliation(s)
- Tomoyuki Yanagi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
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7
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Logvinenko IG, Kondratov IS, Dobrydnev AV, Kozytskiy AV, Grygorenko OO. Synthesis and reactions of ω-CF3O-substituted aliphatic sulfonyl chlorides. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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8
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Ormazábal-Toledo R, Richter S, Robles-Navarro A, Maulén B, Matute RA, Gallardo-Fuentes S. Meisenheimer complexes as hidden intermediates in the aza-S NAr mechanism. Org Biomol Chem 2021; 18:4238-4247. [PMID: 32432594 DOI: 10.1039/d0ob00600a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this work we report a computational study about the aza-SNAr mechanism in fluorine- and chlorine-containing azines with the aim to unravel the physical factors that determine the reactivity patterns in these heterocycles towards propylamine. The nature of the reaction intermediate was analyzed in terms of its electronic structure based on a topological analysis framework in some non-stationary points along the reaction coordinate. The mechanistic dichotomy of a concerted or a stepwise pathway is interpreted in terms of the qualitative Diabatic Model of Intermediate Stabilization (DMIS) approach, providing a general mechanistic picture for the SNAr process involving both activated benzenes and nitrogen-containing heterocycles. With the information collected, a unified vision of the Meisenheimer complexes as transition state, hidden intermediate or real intermediate was proposed.
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Affiliation(s)
- Rodrigo Ormazábal-Toledo
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo OHiggins, Santiago 8370854, Chile. and Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Santiago, Chile.
| | - Sebastián Richter
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Santiago, Chile.
| | - Andrés Robles-Navarro
- Departamento de Física, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Santiago, Chile and Centro para el Desarrollo de la Nanociencia y la Nanotecnología (CEDENNA), Avda. Ecuador 3493, 9170124 Santiago, Chile
| | - Boris Maulén
- Departamento de Física, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Santiago, Chile
| | - Ricardo A Matute
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo OHiggins, Santiago 8370854, Chile. and Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - Sebastián Gallardo-Fuentes
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Casilla 653, Santiago, Chile.
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9
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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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10
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Liu TT, Tang SY, Hu B, Liu P, Bi S, Jiang YY. Mechanism and Origin of Chemoselectivity of Ru-Catalyzed Cross-Coupling of Secondary Alcohols to β-Disubstituted Ketones. J Org Chem 2020; 85:12444-12455. [DOI: 10.1021/acs.joc.0c01671] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tian-Tian Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Shi-Ya Tang
- SINOPEC Research Institute of Safety Engineering, Qingdao 266000, People’s Republic of China
| | - Bing Hu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Peng Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Yuan-Ye Jiang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
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11
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Zubkov IN, Ushakov IA, Chipanina NN, Rulev AY. Halogenation of Electron‐Deficient Vicinal Substituted Alkenes: Regio‐ and Stereoselectivity. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000394] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ilya N. Zubkov
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 664033 Irkutsk Russia
| | - Igor A. Ushakov
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 664033 Irkutsk Russia
| | - Nina N. Chipanina
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 664033 Irkutsk Russia
| | - Alexander Yu. Rulev
- A. E. Favorsky Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 664033 Irkutsk Russia
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12
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Ortega DE, Matute RA. Description of the Reaction Intermediate Stabilization for the Zimmerman Di-π-methane Rearrangement on the Basis of a Parametric Diabatic Analysis. J Phys Chem A 2020; 124:3573-3580. [DOI: 10.1021/acs.jpca.0c01145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daniela E. Ortega
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo OHiggins, Santiago 8370854, Chile
| | - Ricardo A. Matute
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo OHiggins, Santiago 8370854, Chile
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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