1
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Qin M, Qian Y, Huang L, Zhong C, Li M, Yu J, Chen H. Extractive electrospray ionization mass spectrometry for analytical evaluation and synthetic preparation of pharmaceutical chemicals. Front Pharmacol 2023; 14:1110900. [PMID: 36713836 PMCID: PMC9880169 DOI: 10.3389/fphar.2023.1110900] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/03/2023] [Indexed: 01/15/2023] Open
Abstract
Extraction electrospray ionization mass spectrometry (EESI-MS), due to the unique configuration of its ionization module, enables the effective ionization of trace molecules of interest in samples containing complex matrices with high sensitivity, high selectivity and high responding speed without requiring sample pretreatment, and allows high-energy molecular species to undergo specially designed reactions for advanced functionalization. The typical effects of operating conditions on the analytical performance of extraction electrospray ionization mass spectrometry for various pharmaceutical compounds, pharmaceutical preparations and herbal materials were systematically reviewed. The application prospect of extraction electrospray ionization in molecular functionalization for advanced drug discovery is also briefly introduced.
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Affiliation(s)
- Manman Qin
- Mass Spectrometry Laboratory for BioSample Analysis, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China,Key Laboratory for Pharmacology and Translational Research of Traditional Chinese Medicine of Nanchang, Centre for Translational Medicine, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China,Jiangxi Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Vascular Remodeling Diseases, Nanchang, Jiangxi, China
| | - Yuqing Qian
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Lu Huang
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Chao Zhong
- Key Laboratory for Pharmacology and Translational Research of Traditional Chinese Medicine of Nanchang, Centre for Translational Medicine, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China,Jiangxi Key Laboratory of Traditional Chinese Medicine for Prevention and Treatment of Vascular Remodeling Diseases, Nanchang, Jiangxi, China
| | - Mingdong Li
- School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Jun Yu
- Department of Cardiovascular Sciences and Centre for Metabolic Disease Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Huanwen Chen
- Mass Spectrometry Laboratory for BioSample Analysis, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China,*Correspondence: Huanwen Chen,
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Sun J, Yin Y, Li W, Jin O, Na N. CHEMICAL REACTION MONITORING BY AMBIENT MASS SPECTROMETRY. MASS SPECTROMETRY REVIEWS 2022; 41:70-99. [PMID: 33259644 DOI: 10.1002/mas.21668] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/16/2020] [Accepted: 10/22/2020] [Indexed: 06/12/2023]
Abstract
Chemical reactions conducted in different media (liquid phase, gas phase, or surface) drive developments of versatile techniques for the detection of intermediates and prediction of reasonable reaction pathways. Without sample pretreatment, ambient mass spectrometry (AMS) has been applied to obtain structural information of reactive molecules that differ in polarity and molecular weight. Commercial ion sources (e.g., electrospray ionization, atmospheric pressure chemical ionization, and direct analysis in real-time) have been reported to monitor substrates and products by offline reaction examination. While the interception or characterization of reactive intermediates with short lifetime are still limited by the offline modes. Notably, online ionization technologies, with high tolerance to salt, buffer, and pH, can achieve direct sampling and ionization of on-going reactions conducted in different media (e.g., liquid phase, gas phase, or surface). Therefore, short-lived intermediates could be captured at unprecedented timescales, and the reaction dynamics could be studied for mechanism examinations without sample pretreatments. In this review, via various AMS methods, chemical reaction monitoring and mechanism elucidation for different classifications of reactions have been reviewed. The developments and advances of common ionization methods for offline reaction monitoring will also be highlighted.
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Affiliation(s)
- Jianghui Sun
- Key Laboratory of Radiopharmaceuticals Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
| | - Yiyan Yin
- Key Laboratory of Radiopharmaceuticals Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
| | - Weixiang Li
- Key Laboratory of Radiopharmaceuticals Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
| | - Ouyang Jin
- Key Laboratory of Radiopharmaceuticals Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
| | - Na Na
- Key Laboratory of Radiopharmaceuticals Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
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3
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Blieck R, Taillefer M, Monnier F. Metal-Catalyzed Intermolecular Hydrofunctionalization of Allenes: Easy Access to Allylic Structures via the Selective Formation of C–N, C–C, and C–O Bonds. Chem Rev 2020; 120:13545-13598. [DOI: 10.1021/acs.chemrev.0c00803] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rémi Blieck
- Institut Charles Gerhardt Montpellier UMR 5253, Université Montpellier, CNRS, ENSCM, 8 rue de l’Ecole Normale, Montpellier 34296, Cedex 5, France
| | - Marc Taillefer
- Institut Charles Gerhardt Montpellier UMR 5253, Université Montpellier, CNRS, ENSCM, 8 rue de l’Ecole Normale, Montpellier 34296, Cedex 5, France
| | - Florian Monnier
- Institut Charles Gerhardt Montpellier UMR 5253, Université Montpellier, CNRS, ENSCM, 8 rue de l’Ecole Normale, Montpellier 34296, Cedex 5, France
- Institut Universitaire de France, IUF, 1 rue Descartes, 75231 Paris, cedex 5, France
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4
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Wang R, Zhao Z, Zhang H, Sheng C, Wang Y, Jiang K. Formation of the exceptional [M - H] + cation in atmospheric pressure ionization mass spectrometry analysis of 2-(diphenylsilyl) cyclopropanecarboxylate esters. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8866. [PMID: 32559337 DOI: 10.1002/rcm.8866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
RATIONALE In general, ionization of analytes in atmospheric pressure ionization mass spectrometry (API-MS) in positive ion mode results in the formation of protonated molecules ([M + H]+ ) and/or cationized molecules (e.g., [M + Na]+ ). The formation of specific [M - H]+ cations in the API process is of significant interest for further investigation. METHODS The ionization processes of 2-(diphenylsilyl)-1-phenyl-cyclopropanecarboxylate esters were investigated using electrospray ionization (ESI)-MS and atmospheric pressure chemical ionization-MS in positive ion mode. Theoretical calculations were carried out with the Gaussian 03 program using the density functional theory (DFT) method at the B3LYP/6-311 + G(2d,p) level. RESULTS The anomalous [M - H]+ ion and the regular [M + Na]+ ion were both observed using ESI-MS. Interestingly, no [M + H]+ ion was obtained in the ESI-MS analysis, and acidification of the ESI solvent accelerated the formation of [M - H]+ rather than [M + H]+ ion. DFT calculations for the typical methyl 2-(diphenylsilyl)-1-phenyl-cyclopropanecarboxylate (1) indicated that the [1 + H]+ ion can thermodynamically and kinetically undergo facile H2 elimination to generate [1 - H]+ . CONCLUSIONS The favorable formation of [M - H]+ ions in these compounds is attributed to the unique diphenylhydrosilyl group in their structure. The [M + H]+ ion formed easily underwent H2 elimination to produce the [1 - H]+ ion in the API source, and thus, acidification of the ESI solvent apparently accelerates the formation of the [1 - H]+ ion.
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Affiliation(s)
- Ruoqian Wang
- Key Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou, China
| | - Zhiyuan Zhao
- Key Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou, China
| | - Huarong Zhang
- Key Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou, China
| | - Chunqi Sheng
- Key Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou, China
| | - Yan Wang
- Key Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou, China
| | - Kezhi Jiang
- Key Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou, China
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Koleoso OK, Turner M, Plasser F, Kimber MC. A complementary approach to conjugated N-acyliminium formation through photoredox-catalyzed intermolecular radical addition to allenamides and allencarbamates. Beilstein J Org Chem 2020; 16:1983-1990. [PMID: 32831955 PMCID: PMC7431758 DOI: 10.3762/bjoc.16.165] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/05/2020] [Indexed: 12/20/2022] Open
Abstract
An intermolecular radical addition, using photoredox catalysis, to allenamides and allencarbamates is reported. This transformation synthesizes N-acyl-N’-aryl-N,N’-allylaminals, and proceeds by a conjugated N-acyliminium intermediate that previously has principally been generated by electrophilic activation methods. The radical adds to the central carbon of the allene giving a conjugated N-acyliminium that undergoes nucleophilic addition by arylamines and alcohols.
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Affiliation(s)
- Olusesan K Koleoso
- School of Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK.,Department of Pharmaceutical Technology, Moshood Abiola Polytechnic, Abeokuta, Nigeria
| | - Matthew Turner
- School of Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Felix Plasser
- School of Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Marc C Kimber
- School of Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
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6
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Zhang X, Pei M, Wu D, Yang S, Le Z. Real-time monitoring of the reaction between aniline and acetonylacetone using extractive electorspray ionization tandem mass spectrometry. Sci Rep 2019; 9:19279. [PMID: 31848445 PMCID: PMC6917761 DOI: 10.1038/s41598-019-55921-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 12/04/2019] [Indexed: 11/09/2022] Open
Abstract
In this work an on-line monitoring method was developed to study the mechanism of acetic acid catalyzed reaction between aniline and acetonylacetone using extractive electorspray ionization-tandem mass spectrometry (EESI-MS). The signals of reactants, intermediates and various byproducts were continuously detected as a function of reaction time. The chemical assignment of each signal was done via multi-stage collision induced dissociation (CID) analysis, and the reaction mechanism between aniline and acetonylacetone was deduced based on the generated molecular ions and fragment ions. The results indicate that on-line EESI-MS is an effective technique for the real time analysis of chemical reactions. EESI avoids off-line sample pretreatment and provides "soft" ionization, which allows direct analysis of various analytes at molecular level.
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Affiliation(s)
- Xinglei Zhang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China
| | - Miaorong Pei
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China
| | - Debo Wu
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China.
| | - Shuiping Yang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China
| | - Zhanggao Le
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China
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7
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Li Y, Cao Y, Guo Y. Recent Advances in Atmospheric Ionization Mass Spectrometry: Developments and Applications. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900359] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuling Li
- State Key Laboratory of Organometallic Chemistry, National Center for Organic Mass Spectrometry in ShanghaiShanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 China
| | - Yuqi Cao
- State Key Laboratory of Organometallic Chemistry, National Center for Organic Mass Spectrometry in ShanghaiShanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 China
| | - Yinlong Guo
- State Key Laboratory of Organometallic Chemistry, National Center for Organic Mass Spectrometry in ShanghaiShanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 China
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8
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Brown RW, Zamani F, Gardiner MG, Yu H, Pyne SG, Hyland CJT. Divergent Pd-catalyzed cross-coupling of allenyloxazolidinones to give chiral 1,3-dienes and vinyloxazolidinones. Chem Sci 2019; 10:9051-9056. [PMID: 31827747 PMCID: PMC6889140 DOI: 10.1039/c9sc03215k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 08/03/2019] [Indexed: 01/01/2023] Open
Abstract
The divergent reactivity of 5-allenyloxazolidinones has been explored. This novel building block undergoes Pd(0)-catalyzed cross-coupling with boronic acids to form a wide range of chiral 1,3-dienes and pharmaceutically useful vinyloxazolidinones, the chemoselectivity being tightly controlled by a simple switch in additive.
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Affiliation(s)
- Ronald W Brown
- School of Chemistry and Molecular Bioscience , Molecular Horizons Research Institute , University of Wollongong , Wollongong 2522 , NSW , Australia .
| | - Farzad Zamani
- School of Chemistry and Molecular Bioscience , Molecular Horizons Research Institute , University of Wollongong , Wollongong 2522 , NSW , Australia .
| | - Michael G Gardiner
- Research School of Chemistry , Australian National University , Canberra 2601 , Australia .
| | - Haibo Yu
- School of Chemistry and Molecular Bioscience , Molecular Horizons Research Institute , University of Wollongong , Wollongong 2522 , NSW , Australia .
| | - Stephen G Pyne
- School of Chemistry and Molecular Bioscience , Molecular Horizons Research Institute , University of Wollongong , Wollongong 2522 , NSW , Australia .
| | - Christopher J T Hyland
- School of Chemistry and Molecular Bioscience , Molecular Horizons Research Institute , University of Wollongong , Wollongong 2522 , NSW , Australia .
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9
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Lv Y, Pu W, Shi L. Copper-Catalyzed Regio- and Stereoselective 1,1-Dicarbofunctionalization of Terminal Alkynes. Org Lett 2019; 21:6034-6039. [DOI: 10.1021/acs.orglett.9b02190] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yunhe Lv
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000, China
- Jilin Provincial Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun, Jilin 130024, China
| | - Weiya Pu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000, China
| | - Lihan Shi
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000, China
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10
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Chen Y, Ma DM, Ba FF, Sun J, Liu T, Zhu L, Zhou MD. Palladium(II)-Catalyzed Regio- and Stereoselective Hydroarylation of Diphenylphosphorylallenes with Arylboronic Acids in the Presence of Sodium Hydroxide and Oxygen. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600160] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Yang Chen
- School of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 People's Republic of China
| | - Dong-Mei Ma
- School of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 People's Republic of China
| | - Fei-Fei Ba
- School of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 People's Republic of China
| | - Jing Sun
- School of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 People's Republic of China
| | - Tian Liu
- School of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 People's Republic of China
| | - Lei Zhu
- College of Chemistry and Materials Science; Hubei Engineering University; Hubei 432000 People's Republic of China
| | - Ming-Dong Zhou
- School of Chemistry and Materials Science; Liaoning Shihua University; Fushun 113001 People's Republic of China
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11
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Wang HY, Zhang JT, Zhang SS, Guo YL. The remarkable role of solvent in reaction mechanism studies by electrospray mass spectrometry. Org Chem Front 2015. [DOI: 10.1039/c5qo00154d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The solvent assistance technologies in detecting reactive intermediates in complicated reaction solutions using electrospray mass spectrometry were summarized and discussed.
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Affiliation(s)
- Hao-Yang Wang
- National Center for Organic Mass Spectrometry in Shanghai
- Shanghai Institute of Organic Chemistry
- CAS
- Shanghai
- China 200032
| | - Jun-Ting Zhang
- National Center for Organic Mass Spectrometry in Shanghai
- Shanghai Institute of Organic Chemistry
- CAS
- Shanghai
- China 200032
| | - Shu-Sheng Zhang
- National Center for Organic Mass Spectrometry in Shanghai
- Shanghai Institute of Organic Chemistry
- CAS
- Shanghai
- China 200032
| | - Yin-Long Guo
- National Center for Organic Mass Spectrometry in Shanghai
- Shanghai Institute of Organic Chemistry
- CAS
- Shanghai
- China 200032
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12
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Zhang JT, Wang HY, Zhu W, Cai TT, Guo YL. Solvent-Assisted Electrospray Ionization for Direct Analysis of Various Compounds (Complex) from Low/Nonpolar Solvents and Eluents. Anal Chem 2014; 86:8937-42. [DOI: 10.1021/ac502656a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jun-Ting Zhang
- National Center for Organic
Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Hao-Yang Wang
- National Center for Organic
Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Wei Zhu
- National Center for Organic
Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Ting-Ting Cai
- National Center for Organic
Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Yin-Long Guo
- National Center for Organic
Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
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13
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Soriano E, Fernández I. Allenes and computational chemistry: from bonding situations to reaction mechanisms. Chem Soc Rev 2014; 43:3041-105. [DOI: 10.1039/c3cs60457h] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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14
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Chen T, Zhou Y, Yin SF, Zhao Y, Goto M, Han LB. Identification of Alkenyl- and Arylpalladium Hydrides with the Aid of Hydrosilanes. CHEM LETT 2013. [DOI: 10.1246/cl.130588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Tieqiao Chen
- College of Chemistry and Chemical Engineering, Hunan University
| | - Yongbo Zhou
- College of Chemistry and Chemical Engineering, Hunan University
| | - Shuang-Feng Yin
- College of Chemistry and Chemical Engineering, Hunan University
| | - Yalei Zhao
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Midori Goto
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Li-Biao Han
- National Institute of Advanced Industrial Science and Technology (AIST)
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15
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Guo L, Xu Y, Wang X, Liu W, Lu D. Investigation of the Mechanisms of Palladium-Catalyzed C–H Acetoxylation and Methoxylation by Electrospray Ionization Mass Spectrometry. Organometallics 2013. [DOI: 10.1021/om301195k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Lijuan Guo
- Department of Chemistry
and Anhui Key Lab for Biomass Clean Energy, University of Science and Technology of China, Hefei,
230026, People’s Republic of China
| | - Yu Xu
- Department of Chemistry
and Anhui Key Lab for Biomass Clean Energy, University of Science and Technology of China, Hefei,
230026, People’s Republic of China
| | - Xiaojing Wang
- Department of Chemistry
and Anhui Key Lab for Biomass Clean Energy, University of Science and Technology of China, Hefei,
230026, People’s Republic of China
| | - Wenjing Liu
- Department of Chemistry
and Anhui Key Lab for Biomass Clean Energy, University of Science and Technology of China, Hefei,
230026, People’s Republic of China
| | - Dapeng Lu
- Department of Chemistry
and Anhui Key Lab for Biomass Clean Energy, University of Science and Technology of China, Hefei,
230026, People’s Republic of China
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16
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Lechel T, Pfrengle F, Reissig HU, Zimmer R. Three Carbons for Complexity! Recent Developments of Palladium-Catalyzed Reactions of Allenes. ChemCatChem 2013. [DOI: 10.1002/cctc.201200875] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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De Bonis M, Bianco G, Amati M, Belviso S, Cataldi TRI, Lelj F. An interplay between infrared multiphoton dissociation Fourier-transform ion cyclotron resonance mass spectrometry and density functional theory computations in the characterization of a tripodal quinolin-8-olate Gd(III) complex. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:589-601. [PMID: 23436232 DOI: 10.1007/s13361-012-0570-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 12/07/2012] [Accepted: 12/18/2012] [Indexed: 06/01/2023]
Abstract
A new hexadentate, tripodal 8-hydroxyquinoline based ligand (QH3) and its gadolinium(III) tris-chelated (GdQ) complex with hemicage structure was investigated by using high resolution Fourier-transform ion cyclotron resonance mass spectrometry (FTICRMS). The protonated adduct of the free ligand and its hemicage tripodal Gd(III) complex, [GdQ + H](+), were first observed in experiments of electrospray ionization (ESI) with a linear ion trap (LTQ) mass spectrometer and further investigated by using high resolution FTICRMS. Gas-phase dissociation of the protonated Gd(III) complex, by infrared multiphoton dissociation (IRMPD) FTICR MS, demonstrated a fragmentation pattern with six main product cluster ions labeled as [Fn](+) (n = 1 up to 6). These product ions suggest the elimination of 7-amino-alkyl or 7-alkyl chains of the hemicage moiety. High resolution MS conditions allowed the elucidation of the fragmentation pattern and product ion structures along with the determination, among the isotopic pattern of Gd, of the chemical compositions of closely related species, which differ in terms of hydrogen content. Among the Gd six naturally stable isotopes, (158)Gd is the most abundant, and its peak within each cluster was used as a reference for distinguishing each product ions. Computational DFT investigations were applied to give support to some hypothesis of fragmentation pathways, which could not have been easily justified on the basis of the experimental work. Furthermore, computational studies suggested the coordination geometry of the protonated parent complex and the five- and four-coordinated complexes, which derive from its fragmentation. Furthermore, experimental and computational evidences were collected about the octet spin state of the parent compound.
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Affiliation(s)
- Margherita De Bonis
- LaMI, Dipartimento di Scienze, Università degli Studi della Basilicata, Potenza, Italy
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18
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Diao Y, Li J, Wang L, Yang P, Yan R, Jiang L, Zhang H, Zhang S. Ethylene hydroformylation in imidazolium-based ionic liquids catalyzed by rhodium–phosphine complexes. Catal Today 2013. [DOI: 10.1016/j.cattod.2012.06.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Chen L, Zhu F, Wang CH, Zhou J. A highly efficient thiourea catalyzed dehydrative nucleophilic substitution reaction of 3-substituted oxindoles with xanthydrols. RSC Adv 2013. [DOI: 10.1039/c3ra44520h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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20
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Zhu W, Yuan Y, Zhou P, Zeng L, Wang H, Tang L, Guo B, Chen B. The expanding role of electrospray ionization mass spectrometry for probing reactive intermediates in solution. Molecules 2012; 17:11507-37. [PMID: 23018925 PMCID: PMC6268401 DOI: 10.3390/molecules171011507] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 08/29/2012] [Accepted: 09/05/2012] [Indexed: 12/31/2022] Open
Abstract
Within the past decade, electrospray ionization mass spectrometry (ESI-MS) has rapidly occupied a prominent position for liquid-phase mechanistic studies due to its intrinsic advantages allowing for efficient "fishing" (rapid, sensitive, specific and simultaneous detection/identification) of multiple intermediates and products directly from a "real-world" solution. In this review we attempt to offer a comprehensive overview of the ESI-MS-based methodologies and strategies developed up to date to study reactive species in reaction solutions. A full description of general issues involved with probing reacting species from complex (bio)chemical reaction systems is briefly covered, including the potential sources of reactive intermediate (metabolite) generation, analytical aspects and challenges, basic rudiments of ESI-MS and the state-of-the-art technology. The main purpose of the present review is to highlight the utility of ESI-MS and its expanding role in probing reactive intermediates from various reactions in solution, with special focus on current progress in ESI-MS-based approaches for improving throughput, testing reality and real-time detection by using newly developed MS instruments and emerging ionization sources (such as ambient ESI techniques). In addition, the limitations of modern ESI-MS in detecting intermediates in organic reactions is also discussed.
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Affiliation(s)
- Weitao Zhu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, 36 Lushan Road, Changsha 410081, China; (W.Z.); (P.Z.); (L.Z.); (H.W.); (L.T.); (B.C.)
| | - Yu Yuan
- School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha 410013, China;
| | - Peng Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, 36 Lushan Road, Changsha 410081, China; (W.Z.); (P.Z.); (L.Z.); (H.W.); (L.T.); (B.C.)
| | - Le Zeng
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, 36 Lushan Road, Changsha 410081, China; (W.Z.); (P.Z.); (L.Z.); (H.W.); (L.T.); (B.C.)
| | - Hua Wang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, 36 Lushan Road, Changsha 410081, China; (W.Z.); (P.Z.); (L.Z.); (H.W.); (L.T.); (B.C.)
| | - Ling Tang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, 36 Lushan Road, Changsha 410081, China; (W.Z.); (P.Z.); (L.Z.); (H.W.); (L.T.); (B.C.)
| | - Bin Guo
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, 36 Lushan Road, Changsha 410081, China; (W.Z.); (P.Z.); (L.Z.); (H.W.); (L.T.); (B.C.)
| | - Bo Chen
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), Hunan Normal University, 36 Lushan Road, Changsha 410081, China; (W.Z.); (P.Z.); (L.Z.); (H.W.); (L.T.); (B.C.)
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21
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Yuan W, Ma S. Ligand Controlled Highly Selective Copper-Catalyzed Borylcuprations of Allenes with Bis(pinacolato)diboron. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100929] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Sorribes I, Wienhöfer G, Vicent C, Junge K, Llusar R, Beller M. Chemoselective Transfer Hydrogenation to Nitroarenes Mediated by Cubane-Type Mo3S4Cluster Catalysts. Angew Chem Int Ed Engl 2012; 51:7794-8. [DOI: 10.1002/anie.201202584] [Citation(s) in RCA: 136] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 05/10/2012] [Indexed: 11/09/2022]
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23
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Sorribes I, Wienhöfer G, Vicent C, Junge K, Llusar R, Beller M. Chemoselective Transfer Hydrogenation to Nitroarenes Mediated by Cubane-Type Mo3S4Cluster Catalysts. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202584] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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He X, Zhang S, Guo Y, Wang H, Lin G. Mechanistic Investigations of a Palladium-Diene Catalyzed Suzuki–Miyaura Cross-Coupling Reaction. Organometallics 2012. [DOI: 10.1021/om300115x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Xiaoshuang He
- Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Road, Shanghai 200032,
People's Republic of China
| | - Shusheng Zhang
- Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Road, Shanghai 200032,
People's Republic of China
| | - Yinlong Guo
- Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Road, Shanghai 200032,
People's Republic of China
| | - Haoyang Wang
- Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Road, Shanghai 200032,
People's Republic of China
| | - Guoqiang Lin
- Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling Road, Shanghai 200032,
People's Republic of China
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25
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Allenes in Catalytic Asymmetric Synthesis and Natural Product Syntheses. Angew Chem Int Ed Engl 2012; 51:3074-112. [DOI: 10.1002/anie.201101460] [Citation(s) in RCA: 758] [Impact Index Per Article: 63.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Indexed: 02/06/2023]
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26
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Yu S, Ma S. Allene in katalytischer asymmetrischer Synthese und Naturstoffsynthese. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201101460] [Citation(s) in RCA: 254] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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27
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Zhao ZX, Wang HY, Guo YL. Studies on CH3CN-assisted decomposition of 1st Grubbs catalyst by electrospray ionization tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:3401-3410. [PMID: 22002693 DOI: 10.1002/rcm.5240] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The CH(3)CN-assisted decomposition reaction of the 1(st) Grubbs catalyst (1) was studied using electrospray ionization tandem mass spectrometry (ESI-MS/MS). We detected a series of Ru-intermediates and decomposition products by off-line and on-line ESI-MS(/MS) monitoring of the decomposition process. In particular, an on-line microreactor method was applied with ESI-MS/MS to profile the change and relationship of various Ru-intermediates by controlling the reaction within the first 30 s of its time scale. The main fast decomposition mechanism of Ru-catalyst 1 in the presence of CH(3)CN was similar to that proposed by Grubbs, and this was confirmed by detecting the (PhCH(2)PCy(3))(+) ion at m/z 371 as the major decomposition products with ESI-MS. We also studied the time evolution of the transient reactive Ru-intermediate ions step by step with ESI-MS/MS and detected the C-H bond activation products of toluene--dehydrogenated PCy(3), such as P(Cy)(2)(C(6)H(9)), P(Cy)(2)Ph--by analyzing the decomposition reaction solution by gas chromatography (GC)/MS. The mechanism of another minor decomposition pathway involving the phosphine activation of catalyst 1 was proposed on the basis of the ESI-MS(/MS) interception and characterization of the transient reactive Ru-species in the decomposition reaction solution. Finally the coordination effect of the CH(3)CN in assisting the decomposition and stabilizing the transient Ru-complexes is discussed.
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Affiliation(s)
- Zhi-Xiong Zhao
- Shanghai Mass Spectrometry Center, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, PR China
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28
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Shen R, Chen T, Zhao Y, Qiu R, Zhou Y, Yin S, Wang X, Goto M, Han LB. Facile Regio- and Stereoselective Hydrometalation of Alkynes with a Combination of Carboxylic Acids and Group 10 Transition Metal Complexes: Selective Hydrogenation of Alkynes with Formic Acid. J Am Chem Soc 2011; 133:17037-44. [DOI: 10.1021/ja2069246] [Citation(s) in RCA: 189] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ruwei Shen
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Tieqiao Chen
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Yalei Zhao
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Renhua Qiu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yongbo Zhou
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shuangfeng Yin
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Xiangbo Wang
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Midori Goto
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Li-Biao Han
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
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29
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Agrawal D, Schröder D, Frech CM. Observation of Binuclear Palladium Clusters upon ESI-MS Monitoring of the Suzuki–Miyaura Cross-Coupling Catalyzed by a Dichloro-bis(aminophosphine) Complex of Palladium. Organometallics 2011. [DOI: 10.1021/om200274z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Divya Agrawal
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Detlef Schröder
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague 6, Czech Republic
| | - Christian M. Frech
- Institute of Inorganic Chemistry, University of Zürich, Winterthurstrasse 190, 8057 Zürich, Switzerland
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30
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Partyka DV. Transmetalation of Unsaturated Carbon Nucleophiles from Boron-Containing Species to the Mid to Late d-Block Metals of Relevance to Catalytic C−X Coupling Reactions (X = C, F, N, O, Pb, S, Se, Te). Chem Rev 2011; 111:1529-95. [DOI: 10.1021/cr1002276] [Citation(s) in RCA: 251] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- David V. Partyka
- Creative Chemistry LLC, 2074 Adelbert Road, Cleveland, Ohio 44106, United States
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31
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Liu W, Zhou J, Zheng C, Chen X, Xiao H, Yang Y, Guo Y, Zhao G. Tandem cross-Rauhut–Currier/cyclization reactions of activated alkenes to give densely functionalized 3,4-dihydropyrans. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.01.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Agrawal D, Schröder D. Insight into Solution Chemistry from Gas-Phase Experiments. Organometallics 2011. [DOI: 10.1021/om100972n] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Divya Agrawal
- Institute of Organic Chemistry and Biochemistry, Flemingovo nám. 2, 16610 Prague 6, Czech Republic
| | - Detlef Schröder
- Institute of Organic Chemistry and Biochemistry, Flemingovo nám. 2, 16610 Prague 6, Czech Republic
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33
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Wang CZ, Su Y, Li D, Cai B, Guo YL. Analysis of Volatile Organic Compounds fromDendranthema indicumvar.aromaticumby Headspace Gas Chromatography-Mass Spectrometry and Accurate Mass Measurement. ANAL LETT 2010. [DOI: 10.1080/00032711003717356] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Arcadi A, Aschi M, Chiarini M, Ferrara G, Marinelli F. Rhodium- and Palladium-Catalyzed Hydroarylation of Propargylic Amines with Arylboronic Acids. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900773] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Zhou J, Tang W, Guo Y, Ding Y. Mechanistic Insights into the Palladium(II)-catalyzed Intramolecular Cyclization ofo-Alkynylphenylphosphonamide andN-(o-Alkynylphenyl)acetamide by Electrospray Ionization Mass Spectrometry. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990292] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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QIAN R, GUO Y, LÜ L. ESI-FTICRMS Characterization of the Intermediates in Cycloisomerization of Trifluoromethyl-substituted Enynols through Changing the Protecting Group of Substrate. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Tsukamoto H. Development of new palladium(0)-catalyzed reactions based on novel oxidative addition mode. YAKUGAKU ZASSHI 2008; 128:1259-66. [PMID: 18758139 DOI: 10.1248/yakushi.128.1259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have developed palladium(0)/monophosphine-catalyzed trans-selective arylative, alkenylative, alkylative, and alkynylative cyclization reactions of alkyne-aldehydes and -ketones with organoboron reagents. These reactions afford six-membered allylic alcohols with endo tri- or tetra-substituted olefin groups and/or five-membered counterparts with exo olefin groups. The ratios of these products are dramatically affected by alkyne substituents as well as the phosphine ligand. The remarkable trans selectivity of the process results from the novel reaction mechanism involving 'anti-Wacker'-type oxidative addition. Although the cyclization reactions are influenced by the length of the tether between the alkyne and carbonyl group, they can be applied to a multi-component synthesis of biologically important indenes bearing three substituent groups at 1, 2, 3-positions from available o-ethynylbenzaldehyde derivatives. A two-component coupling reaction in methanol provides 1H-indenols, while a three-component reaction involving secondary aliphatic amines as the third component in DMF affords 1H-indenamines. This method allows combinatorial preparation of unsymmetrically substituted 1H-indenes that cannot be prepared via previous synthetic routes. The same catalytic system can also transform allene-carbonyl compounds into 3-cyclohexenols and -cyclopentenols with alkyl, aryl, alkenyl, alkynyl, and boryl groups at C-3. Microwave irradiation efficiently increases not only the reaction rate but also the product yield by suppressing formation of hydroarylation byproducts. Cyclization of optically active 1,3-disubstituted allene-aldehyde reveals that the reaction proceeds through not carbopalladation but 'anti-Wacker'-type oxidative addition.
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Affiliation(s)
- Hirokazu Tsukamoto
- Graduate School of Pharmaceutical Sciences, Tohoku University, 603 Aramaki-aza aoba, Aoba-ku, Sendai, Japan.
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38
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Palladium(0)-catalyzed cis-selective alkylative and arylative cyclization of alkynyl enones with organoboron reagents. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.04.111] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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CHEN M, QIAN R, JIANG HY, ZHANG X, ZHOU J, CAO WG, GUO YL. ESI-MS Studies on Alcoholysis Mechanism of Electron-deficient Cyclopropane Derivatives. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890169] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Pd-catalyzed regioselective hydroarylation of α-(2-aminoaryl)-α,β-ynones with organoboron derivatives as a tool for the synthesis of quinolines: experimental evidence and quantum-chemical calculations. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.03.015] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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41
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Santos LS. Online Mechanistic Investigations of Catalyzed Reactions by Electrospray Ionization Mass Spectrometry: A Tool to Intercept Transient Species in Solution. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700723] [Citation(s) in RCA: 183] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Leonardo S. Santos
- Laboratory of Asymmetric Synthesis, Instituto de Química de Recursos Naturales, Universidad de Talca, P.O. Box 747, Talca, Chile, Fax: +56‐71‐200‐448
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42
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Wu ZJ, Luo SW, Xie JW, Xu XY, Fang DM, Zhang GL. Study of Michael-Michael-retro Michael addition catalyzed by 9-amino-9-deoxyepiquinine using ESI-MS. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2007; 18:2074-2080. [PMID: 17920291 DOI: 10.1016/j.jasms.2007.09.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2007] [Revised: 09/01/2007] [Accepted: 09/04/2007] [Indexed: 05/25/2023]
Abstract
The Michael-Michael-retro Michael addition catalyzed by 9-amino-9-deoxyepiquinine was monitored and the major intermediates and catalyst in the catalytic cycle were detected and characterized using ESI-MS/MS for the first time. Some important isomeric intermediates including isomeric enamine and imine structures were tentatively differentiated and further studied by theoretical calculations. Fragment ions of protonated catalyst indicate that proton possibly influences the conformation of the catalyst.
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Affiliation(s)
- Zhi-Jun Wu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China.
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43
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Qian R, Liao YX, Guo YL, Guo H. ESI-FTICR-MS studies on gas phase fragmentation reactions of ArPd(PPh3)2I complexes. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2006; 17:1582-9. [PMID: 16904338 DOI: 10.1016/j.jasms.2006.07.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2006] [Revised: 07/08/2006] [Accepted: 07/08/2006] [Indexed: 05/11/2023]
Abstract
Gas-phase fragmentation reactions of [ArPd(PPh3)2]+ were studied by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICR-MS). The results of sustained off-resonance irradiation collision-activated dissociation (SORI-CAD) experiments provide detailed insights into mechanisms for the gas-phase fragmentation reactions of these complex ions. The PC bond cleavage mediated by palladium is investigated in the gas phase. There are two competitive fragmentation pathways for the complex ions [ArPd(PPh3)2]+ (Ar = p-OCH3-C6H4, p-CH3-C6H4, p-tBu-C6H4, p-NH2-C6H4, p-COCH3-C6H4, and p-F-C6H4) of electron-donating and electron-withdrawing aromatic iodides. Path A proceeds through reductive elimination of [ArPd(PPh3)2]+ to produce the product ion [PPh3Ar]+. Path B mostly proceeds via phenyl migration from the triphenylphosphine ligand to the palladium center by cleavage of the phosphorus-phenyl bond to give a palladium-phenyl intermediate, and subsequent reductive elimination of the intermediate to yield a product ion [PPh4]+. The result of deuterium-labeling experiments provides evidence for the phenyl shift between the palladium center and the coordinated ligand through cleavage of the PC bond. The complex ions [(o-CH3-C6H4)Pd(PPh3)2]+, [(o-2,6-Me2-C6H3)Pd(PPh3)2]+, and [(C10H7)Pd(PPh3)2]+ display more fragmentation pathways, two of which are similar to those of the ions [ArPd(PPh3)2]+ (Ar = p-OCH3-C6H4, p-CH3-C6H4, p-tBu-C6H4, p-NH2-C6H4, p-COCH3-C6H4, p-F-C6H4), and the third pathway involves loss of one molecule of benzene and one PPh3 ligand. The electronic effect and steric effect of the aryl groups also exhibit different influences on the fragmentation pathways.
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Affiliation(s)
- Rong Qian
- Shanghai Mass Spectrometry Center, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, People's Republic of China
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44
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Takahashi G, Shirakawa E, Tsuchimoto T, Kawakami Y. Nickel-Catalyzed Addition of Organoboronates to 1,2-Dienes and the Corresponding Three-Component Reaction with an Alkyne. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200505445] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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45
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Qian R, Guo H, Liao Y, Wang H, Zhang X, Guo Y. Studies of gas-phase fragmentation reactions of [Pd(PPh3)2(OCOR)]+ by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:589-94. [PMID: 16429481 DOI: 10.1002/rcm.2348] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Gas-phase fragmentation reactions of [Pd(PPh3)2(OCOR)]+ (R = H, CH3, CD3, C2H5, n-C3H7, n-C6H13 and C6H5) were studied by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICRMS). In sustained off-resonance irradiation collision-activated dissociation (SORI-CAD) experiments, the complexes all dissociated to yield the same product ion at m/z 629.1. We propose that the fragmentation pathway occurs through the elimination of RCOOH and a palladium(IV) hydride intermediate. Semi-empirical (PM3) calculations shed light on the mechanism for the fragmentation reactions of these compounds. The results of deuterium-labeling experiments indicate that the protons of RCOOH lost from [Pd(PPh3)2(OCR)]+ originate from the phenyl in the triphenylphosphine ligand. [Pd(PPh3)2(OCOH)]+ undergoes two competitive pathways in SORI-CAD experiments, one of which is similar to that of [Pd(PPh3)2(OCOR)]+ (R = CH3, CD3, C2H5, n-C3H7, n-C6H13 and C6H5), and the other involves decarboxylation. The present study demonstrates that MS could play an important role in studying the gas-phase chemistry of palladium hydrides.
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Affiliation(s)
- Rong Qian
- Shanghai Mass Spectrometry Center, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China
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46
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47
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Abstract
The aldol reaction catalyzed by L-proline has been monitored and the accepted mechanism confirmed by intercepting and characterizing, for the first time, all the proposed intermediates by ESI-MS/MS.
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Affiliation(s)
- Cesar Marquez
- Institut für Reine und Angewandte Chemie, Carl von Ossietzky Universität, 26111 Oldenburg, Germany
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48
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Neu im Kuratorium und im Internationalen Beirat. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200504113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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