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AlBab ND, Nam H, Han C, Omastova M, Chehimi MM, Mohamed AA. Mechanochemical synthesis of gold-silver nanocomposites via diazonium salts. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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2
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Turner LP, Kueper BH, Jaansalu KM, Patch DJ, Battye N, El-Sharnouby O, Mumford KG, Weber KP. Mechanochemical remediation of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) amended sand and aqueous film-forming foam (AFFF) impacted soil by planetary ball milling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 765:142722. [PMID: 33268250 DOI: 10.1016/j.scitotenv.2020.142722] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/23/2020] [Accepted: 09/26/2020] [Indexed: 06/12/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are manmade, fluorinated organic chemicals which have been identified as persistent organic pollutants. PFAS have surface active properties that have made them suitable for applications in oil- and water-resistant products, as well as many firefighting foams. No on-site remediation strategies exist to treat PFAS impacted soils. Mechanochemical remediation of PFOS- and PFOA-amended sand via a planetary ball mill was studied. The effect of sand mass, KOH as a co-milling reagent, and water saturation on the degradation of PFOA and PFOS was evaluated. By 4 h of milling concentrations were reduced by up to 98% for PFOS-amended dry sand and 99% for PFOA-amended dry sand without the addition of a co-milling reagent. Water saturation was determined to be a significant hindrance on the mechanochemical destruction of PFOS and PFOA. A maximum of 89% of fluoride was recovered from PFOS-amended sand when KOH was used as a co-milling reagent. It is hypothesized that reactive particles generated from the fracture of sand grains react with PFAS molecules to initiate destruction, which can result in full defluorination. Milling experiments were also conducted on soils from a Canadian firefighting training area (FFTA), demonstrating that PFOS concentrations can be reduced by up to 96% in site soils. For the first time, ball milling for the remediation of PFAS in environmental media has been demonstrated using amended sand and legacy soils from a FFTA.
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Affiliation(s)
- Lauren P Turner
- Department of Civil Engineering, Queen's University, Kingston, ON, Canada
| | - Bernard H Kueper
- Department of Civil Engineering, Queen's University, Kingston, ON, Canada
| | - Kevin M Jaansalu
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, Canada
| | - David J Patch
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, Canada
| | - Nick Battye
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, Canada
| | | | - Kevin G Mumford
- Department of Civil Engineering, Queen's University, Kingston, ON, Canada
| | - Kela P Weber
- Department of Civil Engineering, Queen's University, Kingston, ON, Canada; Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, Canada.
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3
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The Molecular and Macromolecular Level of Carbon Nanotube Modification Via Diazonium Chemistry: Emphasis on the 2010s Years. CHEMISTRY AFRICA 2020. [DOI: 10.1007/s42250-020-00144-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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4
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Kumar R, Ravi C, Joshi A, Semwal R, Adimurthy S. Catalyst‐free Azo‐arylation of Arenes/Heteroarenes at Room Temperature. ChemistrySelect 2019. [DOI: 10.1002/slct.201901308] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Rahul Kumar
- Natural Products and Green Chemistry DivisionAcademy of Scientific & Innovative ResearchCSIR–Central Salt & Marine Chemicals Research Institute, G.B. Marg Bhavnagar- 364 002. Gujarat INDIA
| | - Chitrakar Ravi
- Natural Products and Green Chemistry DivisionAcademy of Scientific & Innovative ResearchCSIR–Central Salt & Marine Chemicals Research Institute, G.B. Marg Bhavnagar- 364 002. Gujarat INDIA
| | - Abhisek Joshi
- Natural Products and Green Chemistry DivisionAcademy of Scientific & Innovative ResearchCSIR–Central Salt & Marine Chemicals Research Institute, G.B. Marg Bhavnagar- 364 002. Gujarat INDIA
| | - Rashmi Semwal
- Natural Products and Green Chemistry DivisionAcademy of Scientific & Innovative ResearchCSIR–Central Salt & Marine Chemicals Research Institute, G.B. Marg Bhavnagar- 364 002. Gujarat INDIA
| | - Subbarayappa Adimurthy
- Natural Products and Green Chemistry DivisionAcademy of Scientific & Innovative ResearchCSIR–Central Salt & Marine Chemicals Research Institute, G.B. Marg Bhavnagar- 364 002. Gujarat INDIA
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5
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Lebl R, Cantillo D, Kappe CO. Continuous generation, in-line quantification and utilization of nitrosyl chloride in photonitrosation reactions. REACT CHEM ENG 2019. [DOI: 10.1039/c8re00323h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The reagent is prepared from stable, inexpensive and readily available starting materials. In-line UV/vis monitoring enables determination of the reagent's concentration after a continuous extraction and liquid–liquid separation sequence.
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Affiliation(s)
- René Lebl
- Center for Continuous Flow Synthesis and Processing (CCFLOW)
- Research Center Pharmaceutical Engineering GmbH (RCPE)
- 8010 Graz
- Austria
- Institute of Chemistry
| | - David Cantillo
- Center for Continuous Flow Synthesis and Processing (CCFLOW)
- Research Center Pharmaceutical Engineering GmbH (RCPE)
- 8010 Graz
- Austria
- Institute of Chemistry
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CCFLOW)
- Research Center Pharmaceutical Engineering GmbH (RCPE)
- 8010 Graz
- Austria
- Institute of Chemistry
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6
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Transition metal free one pot synthesis of aryl carboxylic acids via dehomologative oxidation of styrenes. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.10.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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7
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Tong F, Hanson MP, Bardeen CJ. Analysis of reaction kinetics in the photomechanical molecular crystal 9-methylanthracene using an extended Finke-Watzky model. Phys Chem Chem Phys 2018; 18:31936-31945. [PMID: 27844070 DOI: 10.1039/c6cp04459j] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In order to develop an improved description of the photomechanical response of 9-methylanthracene (9MA) microcrystals, a detailed study of its solid-state photochemical reaction kinetics is performed. The reaction progress is monitored through the decrease in absorption of an optically microcrystalline thin film. The evolution of the time-dependent photoluminescence during the reaction is also measured. Both the photochemical reaction and nonradiative relaxation rates increase as more photoproduct is formed. In order to analyze the data, an extended version of the Finke-Watzky kinetic model for photochemical reactions is derived, denoted the FW-P model. This extended version enables a systematic analysis of photochemical reaction kinetics in solid-state molecular systems at varying levels of approximation. The FW-P model describes the non-exponential decrease in reactant and also correctly predicts the magnitude of the observed decrease in photoluminescence lifetime over the course of the reaction. The lifetime analysis is complicated by the fact that the microcrystalline 9MA sample contains multiple emitting species, and the extended FW-P model fails to capture the exact dependence of the photoluminescence on product formation. Analysis of the 9MA data indicates that both the photodimerization and the nonradiative relaxation rates can be accelerated by a factor of 10 over the course of the reaction. The results in this paper demonstrate that autocatalytic photodimerization kinetics are present in crystalline 9MA and may influence its photomechanical response.
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Affiliation(s)
- Fei Tong
- Department of Chemistry, University of California, Riverside, 501 Big Springs Road, Riverside, CA 92521, USA.
| | - Mervin P Hanson
- Department of Chemistry, Humboldt State University, 1 Harpst Street, Arcata, CA 95521, USA
| | - Christopher J Bardeen
- Department of Chemistry, University of California, Riverside, 501 Big Springs Road, Riverside, CA 92521, USA.
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Kalmode HP, Vadagaonkar KS, Shinde SL, Chaskar AC. Metal-Free Dehomologative Oxidation of Arylacetic Acids for the Synthesis of Aryl Carboxylic Acids. J Org Chem 2017; 82:3781-3786. [DOI: 10.1021/acs.joc.7b00242] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Hanuman P. Kalmode
- Department
of Dyestuff Technology, Institute of Chemical Technology, Mumbai 400019, India
| | - Kamlesh S. Vadagaonkar
- Department
of Dyestuff Technology, Institute of Chemical Technology, Mumbai 400019, India
| | - Suresh L. Shinde
- National
Centre for Nanosciences and Nanotechnology, University of Mumbai, Mumbai 400098, India
| | - Atul C. Chaskar
- Department
of Dyestuff Technology, Institute of Chemical Technology, Mumbai 400019, India
- National
Centre for Nanosciences and Nanotechnology, University of Mumbai, Mumbai 400098, India
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Hofmann D, Gans E, Krüll J, Heinrich MR. Sustainable Synthesis of Balsalazide and Sulfasalazine Based on Diazotization with Low Concentrations of Nitrogen Dioxide in Air. Chemistry 2017; 23:4042-4045. [PMID: 28054726 DOI: 10.1002/chem.201605359] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Indexed: 01/07/2023]
Abstract
Low concentrations of nitrogen dioxide, which arises as a side product from a range of industrial processes, can effectively be recycled through the diazotization of anilines. The studies reported herein now demonstrate that the removal of nitrogen dioxide from gas streams is even more effective when hydrophilic anilines are used as starting materials. The diazonium salts, which are obtained in this way in up to quantitative yields, can directly be employed in azo coupling reactions, thus opening up an attractive route to the industrially important group of azo compounds.
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Affiliation(s)
- Dagmar Hofmann
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052, Erlangen, Germany
| | - Eva Gans
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052, Erlangen, Germany
| | - Jasmin Krüll
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052, Erlangen, Germany
| | - Markus R Heinrich
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052, Erlangen, Germany
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10
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Nano-CuFe2O4-supported sulfonic acid as a novel and recyclable nanomagnetic acid for diazotization of aromatic amines: efficient synthesis of various azo dyes. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0818-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Hofmann D, Hofmann J, Hofmann LE, Hofmann L, Heinrich MR. Denitrification Combined with Diazotization of Anilines and the Synthesis of 4′-Chlorobiphenyl-2,5-diamine and 1-Chloro-4-iodobenzene. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00298] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Dagmar Hofmann
- Department of Chemistry and
Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Josefa Hofmann
- Department of Chemistry and
Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Laura-Elena Hofmann
- Department of Chemistry and
Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Laura Hofmann
- Department of Chemistry and
Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052 Erlangen, Germany
| | - Markus R. Heinrich
- Department of Chemistry and
Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schuhstraße 19, 91052 Erlangen, Germany
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12
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Hirao T, Tosaka M, Yamago S, Haino T. Supramolecular Fullerene Polymers and Networks Directed by Molecular Recognition between Calix[5]arene and C60. Chemistry 2014; 20:16138-46. [DOI: 10.1002/chem.201404328] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Indexed: 11/12/2022]
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13
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Abdalla NA, El-Haty MT, Adam FAE, Hassan FW. Spectrophotometric studies on some arylazo diamino pyrimidinol in organic solvents and in buffer solutions. EUROPEAN JOURNAL OF CHEMISTRY 2014; 5:41-52. [DOI: 10.5155/eurjchem.5.1.41-52.825] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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14
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Eshghi H, Bakavoli M, Ghasemzadeh M. Nitrite ionic liquid as a new reagent for in situ synthesis of aryl iodides and azides. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1505-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Kaupp G. Scanning Near-Field Optical Microscopy (SNOM). Supramol Chem 2012. [DOI: 10.1002/9780470661345.smc045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Agullo J, Canesi S, Schaper F, Morin M, Bélanger D. Formation and reactivity of 3-diazopyridinium cations and influence on their reductive electrografting on glassy carbon. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4889-4895. [PMID: 22324405 DOI: 10.1021/la2048757] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The in situ generation of 3-diazonium cations from 3-aminopyridine and their subsequent stability under experimental conditions used for electrografting of pyridine groups were investigated by spectroscopy and electrochemistry. UV spectroscopy revealed the rapid kinetics for the reaction of 3-aminopyridine with sodium nitrite in HCl to form the 3-diazopyridinium cation with a second-order rate constant of 550 ± 20 L mol(-1) s(-1) at 22 °C. UV spectroscopy showed that the 3-diazopyridinium ion was relatively unstable and its transformation into 3-hydroxypyridine was proven by (1)H NMR. Its hydrolytic decomposition was investigated by NMR and followed first-order kinetics with a rate constant of (53 ± 5) × 10(-3) s(-1) at 22 °C. These results enable us to establish the appropriate conditions for the electrografting of pyridine from the corresponding diazonium cations generated in situ. The electrochemical modification of glassy carbon electrodes with pyridine was characterized by cyclic voltammetry and the resulting grafted layer by electrochemical impedance spectroscopy in the presence of Fe(CN)(6)(3-/4-) as redox probes. The effect of diazotization time before electrochemical reduction on the blocking effect of the grafted layer was investigated and showed that an increase of the diazotization time led to less efficient grafting. The presence of immobilized pyridine on the electrode surface was demonstrated by X-ray photoelectron spectroscopy measurements, and a surface coverage of 8.8 × 10(-10) mol cm(-2) was estimated for the grafted pyridine groups. The significance of these results for researchers using the in situ generation approach for electrochemical and chemical grafting is discussed.
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Affiliation(s)
- Julia Agullo
- Département de Chimie, Université du Québec à Montréal, Montréal, Québec, Canada
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17
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Javaheri M, Naimi-Jamal MR, Dekamin MG, Kaupp G. Gaseous Nitrogen Dioxide for Sustainable Oxidative Deprotection of Trimethylsilyl Ethers. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2011.629504] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Mehdi Javaheri
- a Research Laboratory of Green Organic Synthesis, Department of Chemistry , Iran University of Science and Technology , Tehran , 16846 , Iran
| | - M. Reza Naimi-Jamal
- a Research Laboratory of Green Organic Synthesis, Department of Chemistry , Iran University of Science and Technology , Tehran , 16846 , Iran
| | - Mohammad G. Dekamin
- a Research Laboratory of Green Organic Synthesis, Department of Chemistry , Iran University of Science and Technology , Tehran , 16846 , Iran
| | - Gerd Kaupp
- b Department of Organic Chemistry, Faculty V , University of Oldenburg, Diekweg 15 , Edewecht , Germany
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18
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Ivasenko O, Perepichka DF. Mastering fundamentals of supramolecular design with carboxylic acids. Common lessons from X-ray crystallography and scanning tunneling microscopy. Chem Soc Rev 2011; 40:191-206. [DOI: 10.1039/c0cs00022a] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Moon ME, Choi Y, Lee YM, Vajpayee V, Trusova M, Filimonov VD, Chi KW. An expeditious and environmentally benign preparation of aryl halides from aryl amines by solvent-free grinding. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.10.099] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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20
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Shiri M, Zolfigol MA, Kruger HG, Tanbakouchian Z. Advances in the application of N2O4/NO2 in organic reactions. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.09.057] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Schmidt B, Berger R, Hölter F. Functionalized alkoxy arene diazonium salts from paracetamol. Org Biomol Chem 2010; 8:1406-14. [DOI: 10.1039/b924619c] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Design of Two Pyrazole-Based Sensors with Similar Configuration and Different Fluorescent Response to Anions. J Fluoresc 2009; 20:3-8. [DOI: 10.1007/s10895-009-0514-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2009] [Accepted: 06/22/2009] [Indexed: 10/20/2022]
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24
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Shao J, Yu X, Lin H, Lin H. Colorimetric recognizing of biologically important anions based on anion-induced tautomerism of the sensor. J Mol Recognit 2008; 21:425-30. [DOI: 10.1002/jmr.924] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Gorlushko DA, Filimonov VD, Semenishcheva NI, Krasnokutskaya EA, Tret’yakov AN, Go BS, Hwang HY, Cha EH, Chi KW. A simple and efficient procedure for diazotization-iodination of aromatic amines in aqueous pastes by the action of sodium nitrite and sodium hydrogen sulfate. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2008. [DOI: 10.1134/s1070428008080253] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Kaupp G. Waste-free synthesis and production all across chemistry with the benefit of self-assembled crystal packings. J PHYS ORG CHEM 2008. [DOI: 10.1002/poc.1340] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Gorlushko DA, Filimonov VD, Krasnokutskaya EA, Semenischeva NI, Go BS, Hwang HY, Cha EH, Chi KW. Iodination of aryl amines in a water-paste form via stable aryl diazonium tosylates. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.11.192] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Weikel RR, Hallett JP, Liotta CL, Eckert CA. Self-Neutralizing in Situ Acid Catalysis for Single-Pot Synthesis of Iodobenzene and Methyl Yellow in CO2-Expanded Methanol. Ind Eng Chem Res 2007. [DOI: 10.1021/ie061386a] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ross R. Weikel
- Schools of Chemical & Biomolecular Engineering and Chemistry and Biochemistry and Specialty Separations Center, Georgia Institute of Technology, Atlanta, Georgia 30332-0100
| | - Jason P. Hallett
- Schools of Chemical & Biomolecular Engineering and Chemistry and Biochemistry and Specialty Separations Center, Georgia Institute of Technology, Atlanta, Georgia 30332-0100
| | - Charles L. Liotta
- Schools of Chemical & Biomolecular Engineering and Chemistry and Biochemistry and Specialty Separations Center, Georgia Institute of Technology, Atlanta, Georgia 30332-0100
| | - Charles A. Eckert
- Schools of Chemical & Biomolecular Engineering and Chemistry and Biochemistry and Specialty Separations Center, Georgia Institute of Technology, Atlanta, Georgia 30332-0100
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Saeki T, Son EC, Tamao K. 2-Methoxy-4-nitrobenzenediazonium Salt as a Practical Diazonium-Transfer Agent for Primary Arylamines via Tautomerism of 1,3-Diaryltriazenes: Deaminative Iodination and Arylation of Arylamines without Direct Diazotization. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2005. [DOI: 10.1246/bcsj.78.1654] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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30
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López C, Valade AG, Combourieu B, Mielgo I, Bouchon B, Lema JM. Mechanism of enzymatic degradation of the azo dye Orange II determined by ex situ 1H nuclear magnetic resonance and electrospray ionization-ion trap mass spectrometry. Anal Biochem 2005; 335:135-49. [PMID: 15519581 DOI: 10.1016/j.ab.2004.08.037] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2004] [Indexed: 01/26/2023]
Abstract
Removal of azo dye effluents generated by textile photography industries is a main issue in wastewater treatment. Enzymatic treatment of dyes appears to be one of the most efficient processes for their degradation. The elucidation of degradation pathways is of special interest considering health and environmental priorities. Ex situ nuclear magnetic resonance (NMR) spectroscopy and electrospray ionization (ESI)-ion trap mass spectrometry performed directly on incubation medium have been used for the first time to follow kinetics of sulfonated azo dye Orange II enzymatic degradation. Nine transformation products were identified using these complementary analyses performed ex situ without any prior treatment. Three types of cleavage are proposed for the degradation pathway: (i) a symmetrical splitting of the azo linkage that leads to the formation of 4-aminobenzenesulfonate (and 1-amino-2-naphthol, not detected); (ii) an asymmetrical cleavage on the naphthalene side that generates 1,2-naphthoquinone and 4-diazoniumbenzenesulfonate as products, with the latter one being transformed into 4-hydroxybenzensulfonate; and (iii) a third degradation pathway that leads to 2-naphthol and 4-hydroxybenzenesulfonate. Moreover, three other intermediates have been identified. This study, which constitutes the first concomitant use of (1)H NMR spectroscopy and ESI-ion trap mass spectrometry in this field, illustrates the indubitable interest of the ex situ approach.
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Affiliation(s)
- Carmen López
- Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
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31
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The sequel to a carbocyclic nucleoside synthesis: a divergent access to both arenediazonium ions and aryl triflates. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.01.147] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Kaupp G. Solid-state molecular syntheses: complete reactions without auxiliaries based on the new solid-state mechanism. CrystEngComm 2003. [DOI: 10.1039/b303432a] [Citation(s) in RCA: 174] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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