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Bugaenko DI, Tikhanova OA, Andreychev VV, Karchava AV. Arylation of Diethyl Acetamidomalonate with Diaryliodonium Salts En Route to α-Arylglycines. J Org Chem 2024; 89:9923-9928. [PMID: 38950106 DOI: 10.1021/acs.joc.4c00768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Diethyl acetamidomalonate (DEAM) has been widely used for the synthesis of α-amino acids via C-alkylation under basic conditions followed by hydrolysis/decarboxylation. In contrast, the C-arylation of this reagent remains undeveloped. Herein, we report a novel strategy for the synthesis of racemic α-arylglycines based on the selective arylation of DEAM with diaryliodonium salts under mild, transition metal-free conditions. The reaction features good functional group tolerance and easy scalability and is applicable to the chemoselective C-H-modification of arenes including approved drugs, thus enabling a straightforward approach to complex α-arylglycines that would be challenging to make otherwise.
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Affiliation(s)
- Dmitry I Bugaenko
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
| | - Olga A Tikhanova
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
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Amin A, Manzoor M, Ramay MW, Hassan A, Hina K, Syed A, Bahkali AH, Arshad M. Metallic nanoparticles photodegraded antibiotics and co-application improved wheat growth and nutritional quality through stress alleviation. CHEMOSPHERE 2023; 323:138189. [PMID: 36812989 DOI: 10.1016/j.chemosphere.2023.138189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 02/03/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Antibiotics are now considered as emerging environmental pollutants due to their persistent nature and continuous exposure through irrigation with wastewater contaminated with antibiotics. The aim of present study was to assess the potential of nanoparticles for the photodegradation of antibiotics and subsequent stress alleviation via Titania oxide (TiO2) application for improvement in crop productivity and quality in terms of the nutritional composition. In the first phase, different nanoparticles, TiO2, Zinc oxide (ZnO), and Iron oxide (Fe2O3) with varying concentrations (40-60 mg L-1) and time-periods (1-9 days) were tested to degrade amoxicillin (Amx) and levofloxacin (Lev) @ 5 mg L-1 under the visible light. Results indicated that TiO2 nanoparticles (50 mg L-1) were the most effective nanoparticles for the removal of both antibiotics with maximum degradation of 65% and 56% for Amx and Lev, respectively, on the 7th day. In the second phase, a pot experiment was conducted in which TiO2 (50 mg L-1) was applied individually and along with antibiotics (5 mg L-1) in order to evaluate the effect of nanoparticles on stress alleviation for growth promotion of wheat exposed to antibiotics. Plant biomass was reduced by Amx (58.7%) and Lev (68.4%) significantly (p < 0.05) when compared to the control. However, co-application of TiO2 and antibiotics improved the total iron (34.9% and 42%), carbohydrate (33% and 31%), and protein content (36% and 33%) in grains under Amx and Lev stress, respectively. The highest plant length, grain weight, and nutrient uptake were observed upon application of TiO2 nanoparticles alone. Total iron, carbohydrates, and proteins in grains were significantly increased by 52%, 38.5%, and 40%, respectively compared to the control (with antibiotics). The findings highlight the potential of TiO2 nanoparticles for stress alleviation, growth, and nutritional improvement under antibiotic stress upon irrigation with contaminated wastewater.
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Affiliation(s)
- Anum Amin
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Maria Manzoor
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Islamabad, Pakistan; Institute of Plant Nutrition and Soil Science, Kiel University, Hermann-Rodewald-Str. 2, 24118, Kiel, Germany
| | - Muhammad Wajahat Ramay
- Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary
| | - Ali Hassan
- Department of Chemical Engineering, MNS University of Engineering and Technology, Multan, Pakistan
| | - Kiran Hina
- Department of Environmental Sciences, University of Gujrat, Gujrat, Pakistan
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh, 11451, Saudi Arabia
| | - Ali H Bahkali
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh, 11451, Saudi Arabia
| | - Muhammad Arshad
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Islamabad, Pakistan.
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Li W, Zhou R, Zhou R, Weerasinghe J, Zhang T, Gissibl A, Cullen PJ, Speight R, Ostrikov KK. Insights into amoxicillin degradation in water by non-thermal plasmas. CHEMOSPHERE 2022; 291:132757. [PMID: 34736946 DOI: 10.1016/j.chemosphere.2021.132757] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/29/2021] [Accepted: 10/31/2021] [Indexed: 06/13/2023]
Abstract
Antibiotics have been extensively used as pharmaceuticals for diverse applications. However, their overuse and indiscriminate discharge to water systems have led to increased antibiotic levels in our aquatic environments, which poses risks to human and livestock health. Non-thermal plasma water. However, the issues of process scalability and the mechanisms towards understanding the plasma-induced degradation remain. This study addresses these issues by coupling a non-thermal plasma jet with a continuous flow reactor to reveal the effective mechanisms of amoxicillin degradation. Four industry-relevant feeding gases (nitrogen, air, argon, and oxygen), discharge voltages, and frequencies were assessed. Amoxicillin degradation efficiencies achieved using nitrogen and air were much higher compared to argon and oxygen and further improved by increasing the applied voltage and frequency. The efficiency of plasma-induced degradation depended on the interplay of hydrogen peroxide (H2O2) and nitrite (NO2-), validated by mimicked chemical solutions tests. Insights into prevailing degradation pathways were elucidated through the detection of intermediate products by advanced liquid chromatography-mass spectrometry.
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Affiliation(s)
- Wenshao Li
- School of Biology and Environmental Science, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia
| | - Renwu Zhou
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia; School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, 2006, New South Wales, Australia.
| | - Rusen Zhou
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia; Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia
| | - Janith Weerasinghe
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia; Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia
| | - Tianqi Zhang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, 2006, New South Wales, Australia
| | - Alexander Gissibl
- School of Biology and Environmental Science, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia
| | - Patrick J Cullen
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, 2006, New South Wales, Australia
| | - Robert Speight
- School of Biology and Environmental Science, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia; ARC Centre of Excellence in Synthetic Biology, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia
| | - Kostya Ken Ostrikov
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia; Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, 4000, Queensland, Australia
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Xue L, Zhao C, Mo Q, Zhou Y, Huang K. An electrodeless atmospheric microwave plasma jet for efficient degradation of antibiotic norfloxacin. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 291:112729. [PMID: 33965705 DOI: 10.1016/j.jenvman.2021.112729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/18/2021] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
Plasma technology is increasingly being used for the degradation of residual antibiotics in aquatic environments. However, the electrodes in conventional plasma generators are subject to erosion, which can pollute the reaction system and shorten its lifetime. To overcome these drawbacks, we developed an electrodeless high-flow atmospheric microwave plasma jet (MPJ) for fast and efficient degradation of residual norfloxacin (NOR), a typical fluoroquinolone antibiotic that is frequently detected in the aquatic environment owing to its widespread use in the treatment of various infectious diseases. Stable plasma was generated through a low-cost magnetron with the assistance of injection-locking technology. The degradation efficiency of NOR (20 mg/L) reached 98.27 ± 1.03% at 6 min and the mineralisation efficiency reached 68.67 ± 3.21% at 15 min. The fast degradation process of the NOR solution contributes to the large cross-section (approximately 153 mm2) of the plasma in direct contact with the solution. Hydroxyl radical (•OH) scavengers were used to identify the generated oxidising species, which indicated that their non-selective oxidation plays a major role in NOR degradation. Three main possible degradation pathways and mechanisms were proposed, namely the attack of •OH on the piperazine ring, quinolone ring, and benzene ring. The NOR solution was not toxic to Escherichia coli after 20 min of degradation. Thus, the high-flow atmospheric MPJ is an effective technology for the degradation of antibiotics in aqueous solutions.
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Affiliation(s)
- Li Xue
- College of Electronics and Information Engineering, Sichuan University, Chengdu, 610064, China; School of Public Health, Southwest Medical University, Luzhou, 646000, China
| | - Chaoxia Zhao
- College of Electronics and Information Engineering, Sichuan University, Chengdu, 610064, China
| | - Qi Mo
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Yanping Zhou
- College of Electronics and Information Engineering, Sichuan University, Chengdu, 610064, China
| | - Kama Huang
- College of Electronics and Information Engineering, Sichuan University, Chengdu, 610064, China.
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Contact Glow Discharge Electrolysis: Effect of Electrolyte Conductivity on Discharge Voltage. Catalysts 2020. [DOI: 10.3390/catal10101104] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Contact glow discharge electrolysis (CGDE) can be exploited in environmental chemistry for the degradation of pollutants in wastewater. This study focuses on the employment of cheap materials (e.g., steel and tungsten) as electrodes for experiments of CGDE conducted in electrochemical cells with variable electrolytic composition. A clear correlation between breakdown voltage (VB)/discharge (or midpoint) voltage (VD) and the conductivity of the electrolyte is shown. Regardless of the chemical nature of the ionogenic species (acid, base or salt), the higher the conductivity of the solution, the lower the applied potential required for the onset of the glow discharge. Concerning practical application, these salts could be added to poorly conductive wastewaters to increase their conductivity and thus reduce the ignition potential necessary for the development of the CGDE. Such an effect could render the process of chemical waste disposal from wastewaters more economical. Moreover, it is evidenced that both VB and VD are practically independent on the ratio anode area to cathode area if highly conductive solutions are employed.
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Xu Z, Xue X, Hu S, Li Y, Shen J, Lan Y, Zhou R, Yang F, Cheng C. Degradation effect and mechanism of gas-liquid phase dielectric barrier discharge on norfloxacin combined with H2O2 or Fe2+. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115862] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Abazari R, Reza Mahjoub A, Slawin AMZ, Carpenter-Warren CL. Morphology- and size-controlled synthesis of a metal-organic framework under ultrasound irradiation: An efficient carrier for pH responsive release of anti-cancer drugs and their applicability for adsorption of amoxicillin from aqueous solution. ULTRASONICS SONOCHEMISTRY 2018; 42:594-608. [PMID: 29429708 DOI: 10.1016/j.ultsonch.2017.12.032] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 12/15/2017] [Accepted: 12/15/2017] [Indexed: 05/21/2023]
Abstract
In this study, we have reported a biocompatible metal-organic framework (MOF) with ultra-high surface area, which we have shown to have uses as both a cancer treatment delivery system and for environmental applications. Using a sonochemical approach, highly flexible organic H3BTCTB and ditopic 4,4'-BPDC ligands, along with modulators of acetic acid and pyridine were combined to prepare a Zn(II)-based metal-organic framework, DUT-32, [Zn4O(BPDC)(BTCTB)4/3(DEF)39.7(H2O)11.3]. Powder X-ray diffraction (PXRD), field-emission scanning electron microscopy (FE-SEM), and Fourier transform infrared spectroscopy (FTIR) were used to characterize, the particle size, shape, and structure of the DUT-32. To show the effects of shape and size of DUT-32 micro/nano-structures on doxorubicin (DOX) drug release and amoxicillin (AMX) adsorption, time of sonication, initial reagent concentrations, irradiation frequency, and acetic acid to pyridine molar ratios were optimized. The drug-loaded DUT-32 was soaked in simulated body fluid (SBF) and the drug release ratio was monitored through release time to perform in vitro drug release test. A slow and sustained release was observed for DUT-32 micro/nano-structures, having a considerable drug loading capacity. At the pH values 7.4-4.5, various profiles of pH-responsive release were achieved. Also, the prepared DUT-32 micro/nano-structures are found to be biocompatible with PC3 (prostate cancer) and HeLa (cervical cancer) cell lines, when tested by MTT assay. Moreover, DUT-32 micro/nano-structures were studied to show AMX adsorption from aqueous solution. Finally, kinetic studies indicated that AMX adsorption and drug release of DOX via this MOF are of first-order kinetics.
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Affiliation(s)
- Reza Abazari
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Ali Reza Mahjoub
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Alexandra M Z Slawin
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST Scotland, UK
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Frontistis Z, Antonopoulou M, Venieri D, Konstantinou I, Mantzavinos D. Boron-doped diamond oxidation of amoxicillin pharmaceutical formulation: Statistical evaluation of operating parameters, reaction pathways and antibacterial activity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 195:100-109. [PMID: 27117507 DOI: 10.1016/j.jenvman.2016.04.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 04/12/2016] [Accepted: 04/12/2016] [Indexed: 05/03/2023]
Abstract
The electrochemical oxidation of a commercial amoxicillin formulation over a boron-doped diamond (BDD) anode was investigated. The effect of initial COD concentration (1-2 g/L), current density (30-50 mA/cm2), treatment time (15-90 min), initial pH (3-9) and electrolyte concentration (2-4 g/L NaCl) on COD removal was assessed through a factorial design methodology. For the range of conditions in question, the first three single effects, as well as the interaction between COD and time were the most important ones in terms of mass of COD removed. Liquid chromatography time-of-flight mass spectrometry (LC-TOF-MS) was employed to identify major transformation by-products (TBPs); thirteen compounds were detected as TBPs of AMX electrochemical degradation, while several others appear in the original formulation. AMX degradation occurs though the following pathways: (i) hydroxylation mainly in the benzoic ring, (ii) opening of β-lactam ring followed by decarboxylation, hydroxylation and re-arrangement, and (iii) bond cleavage between the carbons of amino and amide groups. Furthermore, the process is accompanied by the release of several ions, i.e. nitrate, sulfate and ammonium. The antibiotic activity of AMX up to 1000 mg/L was tested against Klebsiella pneumoniae and Enterococcus faecalis reference strains; both bacteria are completely inactivated at this concentration but the activity is reduced substantially at lower concentrations. Oxidized samples still exhibit some antibacterial activity (50-60%) which is due to TBPs and active chlorine species present in the liquid phase. The latter are generated from chloride ions and enhance considerably AMX degradation rates.
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Affiliation(s)
- Zacharias Frontistis
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Maria Antonopoulou
- Department of Environmental & Natural Resources Management, University of Patras, 2 Seferi St., GR-30100 Agrinio, Greece
| | - Danae Venieri
- School of Environmental Engineering, Technical University of Crete, Polytechneioupolis, GR-73100 Chania, Greece
| | | | - Dionissios Mantzavinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece.
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Zeng R, Li K, Sheng X, Chen L, Zhang H, Feng X. A room temperature approach for the fabrication of aligned TiO2 nanotube arrays on transparent conductive substrates. Chem Commun (Camb) 2016; 52:4045-8. [DOI: 10.1039/c5cc10607a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel room-temperature solution-approach is reported for the fabrication of highly crystallized TiO2 nanotube arrays on transparent conductive substrates.
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Affiliation(s)
- Ruosha Zeng
- Institute of Nanochemistry and Nanobiology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Ke Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Xia Sheng
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Liping Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
| | - Haijiao Zhang
- Institute of Nanochemistry and Nanobiology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Xinjian Feng
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- P. R. China
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Complete mineralization of the antibiotic amoxicillin by electro-Fenton with a BDD anode. J APPL ELECTROCHEM 2014. [DOI: 10.1007/s10800-014-0740-9] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Pan SS, Lu W, Zhao YH, Tong W, Li M, Jin LM, Choi JY, Qi F, Chen SG, Fei LF, Yu SF. Self-doped rutile titania with high performance for direct and ultrafast assay of H2O2. ACS APPLIED MATERIALS & INTERFACES 2013; 5:12784-12788. [PMID: 24283473 DOI: 10.1021/am4045162] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Detection of H2O2 is important for the applications in environmental protection, pharmaceutical industries, food production, and clinical control. Current colorimetric assay of H2O2 based on enzyme or nanomaterials always needs TMB or other peroxidase substrate as coloration species. Furthermore, the corresponding response time including incubation process is in order of minute. In this study, we report on the synthesis of heavily Ti(3+)-doped TiO2 composed of spherelike nanoparticles by pulsed laser ablation method. This TiO2 can directly detect H2O2 without using TMB or any other peroxidase substrate and is free from incubation process. In addition, the detection sensitivity is compatible with or better than that of the natural enzyme or other nanomaterials. Hence, the self-doped TiO2 nanoparticles provide a novel, direct, ultrafast approach for H2O2 assay application.
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Affiliation(s)
- Shu Sheng Pan
- Department of Applied Physics, #Department of Civil and Environmental Engineering, and ||Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University , Hung Hom, Kowloon, Hong Kong, China
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