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Chao S, Valsecchi C, Sun J, Shao H, Li X, Tang C, Fan M. Highly Sensitive Surface-Enhanced Raman Scattering Detection of Hydroxyl Radicals in Water Microdroplets Using Phthalhydrazide/Ag Nanoparticles Nanosensor. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:16497-16506. [PMID: 39114886 DOI: 10.1021/acs.est.4c03081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/18/2024]
Abstract
The spontaneous generation of hydrogen peroxide (H2O2) within atmospheric microdroplets, such as raindrops and aerosols, plays a crucial role in various environmental processes including pollutant degradation and oxidative stress. However, quantifying hydroxyl radicals (•OH), essential for H2O2 formation, remains challenging due to their short lifespan and low concentration. This study addresses this gap by presenting a highly sensitive and selective surface-enhanced Raman scattering (SERS) nanosensor specifically designed for quantifying •OH within water microdroplets. Utilizing a phthalhydrazide (Phth) probe, the SERS technique enables rapid, interference-free detection of •OH at nanomolar concentrations. It achieves a linear detection range from 2 nM to 2 μM and a limit of detection as low as 0.34 nM. Importantly, the SERS sensor demonstrates robustness and accuracy within water microdroplets, paving the way for comprehensive mechanistic studies of H2O2 generation in the atmosphere. This innovative approach not only offers a powerful tool for environmental research but also holds potential for advancing our understanding of atmospheric H2O2 formation and its impact on air quality and pollutant degradation.
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Affiliation(s)
- Shengmao Chao
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu 610200, China
| | - Chiara Valsecchi
- Federal University of Pampa, Campus Alegrete, 97542-160 Alegrete, Rio Grande do Sul, Brazil
| | - Ji Sun
- Department of Student Affairs, Henan University of Technology, 450001 Zhengzhou, China
| | - Hong Shao
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu 610200, China
| | - Xinxia Li
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu 610200, China
| | - Changyu Tang
- Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu 610200, China
| | - Meikun Fan
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
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2
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Feng Y, Chen S, Lv L, Yaremenko IA, Terent'ev AO, Li Z. Photocatalytic Sulfonyl Peroxidation of Alkenes via Deamination of N-Sulfonyl Ketimines. Org Lett 2024; 26:1920-1925. [PMID: 38386918 DOI: 10.1021/acs.orglett.4c00241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
A photocatalytic three-component sulfonyl peroxidation of alkenes with N-sulfonyl ketimines and tert-butyl hydroperoxide is reported. The reaction takes place via the photoinduced EnT process, which allows the efficient synthesis of a variety of β-peroxyl sulfones under mild reaction conditions in the absence of a transition metal catalyst. The downstream derivatizations of the peroxides were also performed. Furthermore, the utility of this protocol was manifested by the synthesis of 11β-HSD1 inhibitor and the antiprostate cancer drug bicalutamide.
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Affiliation(s)
- Yuting Feng
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Shujun Chen
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Leiyang Lv
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Ivan A Yaremenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia
| | - Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., 119991 Moscow, Russia
| | - Zhiping Li
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, China
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3
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Liu Q, Lin T, Wang YE, Liang W, Cao L, Sheng X, Xiong D, Mao J. Nickel-Catalyzed Reductive Arylation of α-Bromo Sulfoxide. Org Lett 2023; 25:9153-9157. [PMID: 38096429 DOI: 10.1021/acs.orglett.3c03619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
A nickel-catalyzed cross-electrophile coupling of aryl iodides with α-bromo sulfoxide to access a diverse array of aryl benzyl sulfoxides has been discovered. These reactions occurred under mild conditions with excellent functional group tolerance so that optically enriched sulfoxides could be coupled with aryl iodides, generating corresponding sulfoxides with excellent stereochemical integrity. Furthermore, the scalability of this transformation was demonstrated. Initial mechanistic studies revealed that the reaction undergoes a radical pathway.
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Affiliation(s)
- Qiang Liu
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Tingzhi Lin
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yan-En Wang
- College of Science, Hebei Agricultural University, Baoding 071000, P. R. China
| | - Wenbiao Liang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Liuying Cao
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Xutao Sheng
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Dan Xiong
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Jianyou Mao
- School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
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Chu F, Zhao G, Li W, Wei W, Chen W, Ma Z, Gao Z, Shuaibu NS, Luo J, Yu B, Feng H, Pan Y, Wang X. Catalyst-Free Oxidation Reactions in a Microwave Plasma Torch-Based Ion/Molecular Reactor: An Approach for Predicting the Atmospheric Oxidation of Pollutants. Anal Chem 2022; 95:2004-2010. [PMID: 36562720 DOI: 10.1021/acs.analchem.2c04469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The atmospheric oxidation of chemicals has produced many new unpredicted pollutants. A microwave plasma torch-based ion/molecular reactor (MPTIR) interfacing an online mass spectrometer has been developed for creating and monitoring rapid oxidation reactions. Oxygen in the air is activated by the plasma into highly reactive oxygen radicals, thereby achieving oxidation of thioethers, alcohols, and various environmental pollutants on a millisecond scale without the addition of external oxidants or catalysts (6 orders of magnitude faster than bulk). The direct and real-time oxidation products of polycyclic aromatic hydrocarbons and p-phenylenediamines from the MPTIR match those of the long-term multistep environmental oxidative process. Meanwhile, two unreported environmental compounds were identified with an MPTIR and measured in the actual water samples, which demonstrates the considerable significance of the proposed device for both predicting the environmental pollutants (non-target screening) and studying the mechanism of atmospheric oxidative processes.
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Affiliation(s)
- Fengjian Chu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Gaosheng Zhao
- State Key Laboratory of Industrial Control Technology, Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Wangyu Li
- Department of Chemistry, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Wei Wei
- Department of Chemistry, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Weiwei Chen
- Department of Chemistry, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Zihan Ma
- Department of Chemistry, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Zhan Gao
- Department of Chemistry, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Nazifi Sani Shuaibu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Jikui Luo
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Bingwen Yu
- Research Center for Analytical Instruments and Intelligent Systems, Huzhou Institute of Zhejiang University, Huzhou313002, Zhejiang, P. R. China
| | - Hongru Feng
- Department of Chemistry, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Yuanjiang Pan
- Department of Chemistry, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
| | - Xiaozhi Wang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou310027, Zhejiang, P. R. China
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Salvitti C, de Petris G, Troiani A, Managò M, Ricci A, Pepi F. Kinetic Study of the Maillard Reaction in Thin Film Generated by Microdroplets Deposition. Molecules 2022; 27:5747. [PMID: 36144482 PMCID: PMC9504576 DOI: 10.3390/molecules27185747] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/23/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
The Maillard reaction kinetics in the confined volume of the thin film produced by ESI microdroplet deposition was studied by mass spectrometry. The almost exclusive formation of the Amadori product from the reaction of D-xylose and D-glucose toward L-glycine and L-lysine was demonstrated. The thin film Maillard reaction occurred at a mild synthetic condition under which the same process in solution was not observed. The comparison of the thin film kinetics with that of the reaction performed in solution showed strong thin film rate acceleration factors.
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Affiliation(s)
- Chiara Salvitti
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Giulia de Petris
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Anna Troiani
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Marta Managò
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Andreina Ricci
- Department of Mathematics and Physics, University of Campania, L. Vanvitelli, Viale Lincoln 5, 81100 Caserta, Italy
| | - Federico Pepi
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
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Gao XF, Cheng JC, Ye CL, Xiao S, Qiu ZM, Zhang X. Water promoted 9-fluorenylmethyloxycarbonyl detachment from amino acids in charged microdroplets. Org Biomol Chem 2022; 20:7001-7005. [PMID: 36000329 DOI: 10.1039/d2ob01438f] [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
Aqueous microdroplets exhibit unique properties and can trigger reactions that do not occur in bulk solution. Herein, we have demonstrated that water, in microdroplets, can reduce the energy barrier for the lone H transfer of 9-fluorenylmethyloxycarbonyl and promote its detachment from the amino group. This strategy works on various amino acids and opens opportunities of aqueous microdroplets in triggering organic reactions.
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Affiliation(s)
- Xiao-Fei Gao
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China.
| | - Jin-Cai Cheng
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China.
| | - Chun-Lian Ye
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China.
| | - Shan Xiao
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China.
| | - Zai-Ming Qiu
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China.
| | - Xinglei Zhang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China.
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Beng TK, Sax M, Borg C. Serendipitous synthesis of 2-alkenyl- and 2-aryl-4-thiazolidinones using dithiodiglycolic anhydride. NEW J CHEM 2022. [DOI: 10.1039/d2nj03719j] [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
Dithiodiglycolic anhydride undergoes an efficient formal cycloaddition with imines to afford functionalized 4-thiazolidinones, without complications arising from the anhydride-imine reaction or the sulfa-Michael reaction (in the case of 1,3-azadienes).
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Affiliation(s)
- Timothy K. Beng
- Department of Chemistry, Central Washington University, Ellensburg, WA 98926, USA
| | - Mckenna Sax
- Department of Chemistry, Central Washington University, Ellensburg, WA 98926, USA
| | - Claire Borg
- Department of Chemistry, Central Washington University, Ellensburg, WA 98926, USA
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Xu X, Yan L, Wang S, Wang P, Yang AX, Li X, Lu H, Cao ZY. Selective synthesis of sulfoxides and sulfones via controllable oxidation of sulfides with N-fluorobenzenesulfonimide. Org Biomol Chem 2021; 19:8691-8695. [PMID: 34581382 DOI: 10.1039/d1ob01632f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A practical and mild method for the switchable synthesis of sulfoxides or sulfones via selective oxidation of sulfides using cheap N-fluorobenzenesulfonimide (NFSI) as the oxidant has been developed. These highly chemoselective transformations were simply achieved by varying the NFSI loading with H2O as the green solvent and oxygen source without any additives. The good functional group tolerance makes the strategy valuable.
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Affiliation(s)
- Xiaobo Xu
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Leyu Yan
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Shengqiang Wang
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Panpan Wang
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, China.
| | - A-Xiu Yang
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Xiaolong Li
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Hao Lu
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Zhong-Yan Cao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
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Modulation of photochemical oxidation of thioethers to sulfoxides or sulfones using an aromatic ketone as the photocatalyst. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Rainer T, Eidelpes R, Tollinger M, Müller T. Microdroplet Mass Spectrometry Enables Extremely Accelerated Pepsin Digestion of Proteins. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:1841-1845. [PMID: 34101451 PMCID: PMC8267842 DOI: 10.1021/jasms.1c00126] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In microdroplets, rates of chemical or biomolecular reactions can exceed those in the bulk phase by more than a million times. As electrospray ionization-based mass spectrometry (MS) involves the formation of charged microdroplets, reaction acceleration and online MS monitoring of reaction products can readily be performed at the same time. We investigated accelerated enzymatic reactions in microdroplets and focused on the proteolytic enzyme pepsin. Electrosonic spray ionization (ESSI) was utilized for developing the ultrarapid pepsin in-spray digestion of two different proteins, cytochrome c and RocC, at low pH values. The optimization of the protein digestion aimed at achieving maximum sequence coverage for the analyzed proteins. Furthermore, carefully designed control experiments allowed us to unambiguously prove that enzymatic protein cleavage almost exclusively occurs within the spray at a millisecond time scale and not prior to microdroplet generation.
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