1
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Bobrov PS, Kirik SD, Peterson IV, Suboch GA. Regioselective synthesis of novel nitroso-pyrazolylquinoxalines via HOAc-mediated cyclocondensation of 2-hydroxyimino-1,3-diketones with hydrazinylquinoxalines. Org Biomol Chem 2023; 21:3604-3614. [PMID: 37051859 DOI: 10.1039/d3ob00356f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
This article describes the regioselective synthesis of novel nitroso-pyrazolylquinoxalines via cyclocondensation of 2-hydroxyimino-1,3-diketones with hydrazinylquinoxalines. Of note, this is the first time that 2-hydroxyimino-1,3-diketones are used as electrophilic reagents to cyclocondensation with hetarylhydrazines. The cyclocondensation proceeded through a hydrazone intermediates formation. A series of novel nitroso-substituted pyrazolylquinoxalines were synthesized by both "one-pot" and "two-step" procedures in up to 86% yields. Importantly, a gram-scale synthesis of nitroso-pyrazolylquinoxalines, their oxidation and reduction were successfully accomplished.
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Affiliation(s)
- Pavel S Bobrov
- Department of Organic Chemistry and Technology of Organic Substances, Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk 660037, Russian Federation.
| | - Sergei D Kirik
- Department of Inorganic and Physical Chemistry, Siberian Federal University, 79, Svobodny Av., Krasnoyarsk 660041, Russian Federation
- Laboratory of Molecular Spectroscopy and Analysis, Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 50/24 Akademgorodok, Krasnoyarsk 660036, Russian Federation
| | - Ivan V Peterson
- Laboratory of Molecular Spectroscopy and Analysis, Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 50/24 Akademgorodok, Krasnoyarsk 660036, Russian Federation
| | - Georgii A Suboch
- Department of Organic Chemistry and Technology of Organic Substances, Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk 660037, Russian Federation.
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2
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Maitra C, Jadhav PD, Barik D, Ho YS, Cheng CC, Cheng MJ, Chiang YW, Liu RS. Nitrosoarenes Implement Cascade Cyclization of 1-Allenyl-2-alkynylbenzenes through Diradical Mechanism. Org Lett 2023; 25:82-86. [PMID: 36573784 DOI: 10.1021/acs.orglett.2c03884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This work reports cascade cyclization between 1-allenyl-2-alkynylbenzenes and nitrosoarenes. When these two components reacted alone under N2, N,O-functionalized indane-fused isoxazolidines 3 were obtained selectively. DFT calculations verify that this reaction sequence involves unprecedented nitrone/alkyne cycloadditions, followed by diradical rearrangement.
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Affiliation(s)
- Chandrima Maitra
- Frontier Research Center on Fundamental and Applied Science of Matter, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Prakash D Jadhav
- Frontier Research Center on Fundamental and Applied Science of Matter, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Debashis Barik
- Frontier Research Center on Fundamental and Applied Science of Matter, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Yeu-Shiuan Ho
- Department of Chemistry, National Cheng-Kung University, Tainan, Taiwan 701, Republic of China
| | - Chu-Chun Cheng
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Mu-Jeng Cheng
- Department of Chemistry, National Cheng-Kung University, Tainan, Taiwan 701, Republic of China
| | - Yun-Wei Chiang
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Rai-Shung Liu
- Frontier Research Center on Fundamental and Applied Science of Matter, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
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3
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Bianchi P, Monbaliu JCM. Three decades of unveiling the complex chemistry of C-nitroso species with computational chemistry. Org Chem Front 2022. [DOI: 10.1039/d1qo01415c] [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
This review revisits the complex reactivity of C-nitroso derivatives through the synergistic combination of computational and synthetic organic chemistry, with an emphasis on the rationalization of mechanisms and selectivities.
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Affiliation(s)
- Pauline Bianchi
- Center for Integrated Technology and Organic Synthesis, MolSys Research Unit, University of Liège, B-4000 Liège (Sart Tilman), Belgium
| | - Jean-Christophe M. Monbaliu
- Center for Integrated Technology and Organic Synthesis, MolSys Research Unit, University of Liège, B-4000 Liège (Sart Tilman), Belgium
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4
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Chen JX, Jadhav PD, Chen CN, Liu RS. Development of a [2 + 2]-Nitroso/Alkene Cycloaddition Using Sodium Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate Catalyst: Controlled Chemoselectivity of Two Equilibrating Isomeric Intermediates. Org Lett 2021; 23:6246-6251. [PMID: 34351170 DOI: 10.1021/acs.orglett.1c01987] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Sodium tetrakis[3,5-bis(trifluoromethyl)-phenyl]borate (NaBArF) catalyzes the [2 + 2] cycloaddition of 1,4-disubstituted cyclopenta-1,3-dien-2-yl esters with nitrsobenzene in toluene, affording two isolable regioisomers of 6-oxa-7-azabicyclo[3.2.0] heptanes, which thermally rearrange into the same 4-aminocyclopent-1-en-3-ones. In the case of 4-substituted cyclopenta-1,3-dien-2-yl esters, their initial [2 + 2] cycloaddition intermediates undergo a rapid ring expansion to afford six-membered piperidone derivatives efficiently.
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Affiliation(s)
- Jia-Xuan Chen
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Prakash D Jadhav
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Ching-Nung Chen
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Rai-Shung Liu
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
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5
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Qiu S, Cao T, Zhu S. Catalyst-free synthesis of isoxazolidine from nitrosoarene and haloalkyne via a 1,2-halo-migration/[3 + 2] cycloaddition cascade. Org Biomol Chem 2021; 19:3139-3143. [PMID: 33885568 DOI: 10.1039/d1ob00421b] [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
An unprecedented catalyst-free three-component reaction to synthesize isoxazolidine from easily accessible haloalkyne, nitrosoarene and maleimide was developed. This reaction was proposed to proceed via a 1,2-halo migration and [3 + 2] cycloaddition cascade, providing a new reaction pattern of alkyne and nitroso containing species wherein a new type of nitrone was generated. Besides, the reaction conditions were efficient and environmentally benign, enabling the formation of various bioactivity-related isoxazolidines.
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Affiliation(s)
- Shaotong Qiu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China.
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6
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Vatansever EC, Kang J, Tuley A, Ward ES, Liu WR. An optimal "Click" formulation strategy for antibody-drug conjugate synthesis. Bioorg Med Chem 2020; 28:115808. [PMID: 33071032 PMCID: PMC7736079 DOI: 10.1016/j.bmc.2020.115808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/24/2020] [Accepted: 10/01/2020] [Indexed: 11/19/2022]
Abstract
As a versatile reaction for bioconjugation, Cu(I)-catalyzed alkyne-azide cycloaddition (CuAAC) has enormous potential in the synthesis of antibody-drug conjugates (ADCs). In order to optimize CuAAC-based ADC synthesis, we characterized kinetically different formulation processes by mimicking ADC synthesis using small molecules and subsequently revealed unique kinetic behaviors of different combinations of alkyne and azide conditions. Our results indicate that under ADC synthesis conditions, for an alkyne-containing drug, its concentration has minimal impact on the reaction rate when an antibody has a non-metal-chelating azide but is proportional to concentration when an antibody contains a metal-chelating azide; however, for an alkyne-containing antibody, the ADC synthesis rate is proportional to the concentration of a drug with a non-metal-chelating azide but displays almost no dependence on drug concentration with a metal-chelating azide. Based on our results, we designed and tested an optimal "click" formulation strategy that allowed rapid and cost-effective synthesis of a new ADC.
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Affiliation(s)
- Erol C Vatansever
- The Texas A&M Drug Discovery Laboratory, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States
| | - Jeffrey Kang
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, TX 77843, USA
| | - Alfred Tuley
- The Texas A&M Drug Discovery Laboratory, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States
| | - E Sally Ward
- Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, College Station, TX 77843, USA; Department of Microbial Pathogenesis and Immunology, Texas A&M University Health Science Center, Bryan, TX 77807, USA; Centre for Cancer Immunology, Cancer Sciences Unit, Faculty of Medicine, University of Southampton, Southampton SO16 4YD, UK.
| | - Wenshe Ray Liu
- The Texas A&M Drug Discovery Laboratory, Department of Chemistry, Texas A&M University, College Station, TX 77843, United States; Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA; Department of Molecular and Cellular Medicine, College of Medicine, Texas A&M University, College Station, TX 77843, USA.
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7
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Purkait A, Saha S, Ghosh S, Jana CK. Lewis acid catalyzed reactivity switch: pseudo three-component annulation of nitrosoarenes and (epoxy)styrenes. Chem Commun (Camb) 2020; 56:15032-15035. [PMID: 33188668 DOI: 10.1039/d0cc02650f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Lewis acid catalyzed annulation reaction via arene functionalization of nitrosoarenes and C-C cleavage of (epoxy)styrene to provide arylquinolines is reported. The Lewis acid catalyst altered the annulation pattern providing arylquinolines instead of oxazolidines. The reaction with styrene resulted in a mixture of 2,4-diarylquinoline and 4-arylquinoline, while only 3-arylquinoline was formed from the reaction of epoxystyrene.
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Affiliation(s)
- Anisha Purkait
- Department of Chemistry, Indian Institute of Technology, Guwahati, 781039, India.
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8
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Jadhav PD, Chen JX, Liu RS. Gold(I)-Catalyzed Highly Enantioselective [4 + 2]-Annulations of Cyclopentadienes with Nitrosoarenes via Nitroso-Povarov versus Oxidative Nitroso-Povarov Reactions. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01293] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Prakash D. Jadhav
- Frontier Research Center for Matter Science and Technology, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, ROC
| | - Jia-Xuan Chen
- Frontier Research Center for Matter Science and Technology, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, ROC
| | - Rai-Shung Liu
- Frontier Research Center for Matter Science and Technology, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, ROC
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9
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Xu C, Xie W, Xu J. Metal-free and regiospecific synthesis of 3-arylindoles. Org Biomol Chem 2020; 18:2661-2671. [PMID: 32196059 DOI: 10.1039/d0ob00317d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A convenient, metal-free, and organic acid-base promoted synthetic method to prepare 3-arylindoles from 3-aryloxirane-2-carbonitriles and arylhydrazine hydrochlorides has been developed. In the reaction, the organic acid catalyzes a tandem nucleophilic ring-opening reaction of aryloxiranecarbonitriles and arylhydrazine hydrochlorides and Fischer indolization. The organic base triethylamine plays a crucial role in the final elimination step in the Fischer indole synthesis, affording 3-arylindoles regiospecifically. The reaction features advantages of microwave acceleration, non-metal participation, short reaction time, organic acid-base co-catalysis, and broad substrate scope.
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Affiliation(s)
- Chuangchuang Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Wenlai Xie
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
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10
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Roy SK, Purkait A, Aziz SMT, Jana CK. Acid mediated coupling of aliphatic amines and nitrosoarenes to indoles. Chem Commun (Camb) 2020; 56:3167-3170. [PMID: 32065174 DOI: 10.1039/c9cc09616g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Traditionally, amines react with nitrosoarenes to provide the corresponding imines or azo compounds. Herein, we report an acid mediated annulation reaction of aliphatic amines and nitrosoarenes to provide indole derivatives. The elusive direct annulation of aliphatic amines and nitrosoarenes via simultaneous C-C and C-N bond formation was achieved under metal free conditions. This conceptually novel method for indole synthesis does not require pre-functionalization steps for the new C-C and C-N bond formation. The method has been applied for an elegant synthesis of nor-neocryptolepine and neocryptolepine.
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11
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Gao Y, Yang S, Xiao W, Nie J, Hu XQ. Radical chemistry of nitrosoarenes: concepts, synthetic applications and directions. Chem Commun (Camb) 2020; 56:13719-13730. [DOI: 10.1039/d0cc06023b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The radical chemistry of nitrosoarenes has recently emerged as an attractive and important topic in organic chemistry.
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Affiliation(s)
- Yang Gao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Simin Yang
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Wenping Xiao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Jianhong Nie
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
| | - Xiao-Qiang Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- School of Chemistry and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
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12
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Intrieri D, Carminati DM, Zardi P, Damiano C, Manca G, Gallo E, Mealli C. Indoles from Alkynes and Aryl Azides: Scope and Theoretical Assessment of Ruthenium Porphyrin-Catalyzed Reactions. Chemistry 2019; 25:16591-16605. [PMID: 31626355 DOI: 10.1002/chem.201904224] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/17/2019] [Indexed: 01/24/2023]
Abstract
A symbiotic experimental/computational study analyzed the Ru(TPP)(NAr)2 -catalyzed one-pot formation of indoles from alkynes and aryl azides. Thirty different C3 -substituted indoles were synthesized and the best performance, in term of yields and regioselectivities, was observed when reacting ArC≡CH alkynes with 3,5-(EWG)2 C6 H3 N3 azides, whereas the reaction was less efficient when using electron-rich aryl azides. A DFT analysis describes the reaction mechanism in terms of the energy costs and orbital/electronic evolutions; the limited reactivity of electron-rich azides was also justified. In summary, PhC≡CH alkyne interacts with one NAr imido ligand of Ru(TPP)(NAr)2 to give a residually dangling C(Ph) group, which, by coupling with a C(H) unit of the N-aryl substituent, forms a 5+6 bicyclic molecule. In the process, two subsequent spin changes allow inverting the conformation of the sp2 C(Ph) atom and its consequent electrophilic-like attack to the aromatic ring. The bicycle isomerizes to indole via a two-step outer sphere H-migration. Eventually, a 'Ru(TPP)(NAr)' mono-imido active catalyst is reformed after each azide/alkyne reaction.
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Affiliation(s)
- Daniela Intrieri
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Daniela Maria Carminati
- Department of Chemistry, University of Rochester, 416 Hutchison Hall, New York, NY, 14627-0216, USA
| | - Paolo Zardi
- Department of Chemical Sciences, University of Padua, Via F. Marzolo 1, 35131, Padua, Italy
| | - Caterina Damiano
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Gabriele Manca
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Emma Gallo
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Carlo Mealli
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
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13
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Ford RL, Alt I, Jana N, Driver TG. Intramolecular Pd-Catalyzed Reductive Amination of Enolizable sp 3-C-H Bonds. Org Lett 2019; 21:8827-8831. [PMID: 31613113 DOI: 10.1021/acs.orglett.9b03458] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium-catalyzed reductive cyclization of nitroarenes has been designed to construct sp3-C-NHAr bonds from sp3-C-H bonds by using an enolizable nucleophile to intercept a nitrosoarene intermediate. Exposure of ortho-substituted nitroarenes to 5 mol % of Pd(OAc)2 and 10 mol % of phenanthroline under 2 atm of CO constructs partially saturated 5-, 6-, or 7-membered N-heterocycles using α-pyridyl carboxylates, malonates, 1,3-dimethylbarbituric acid, 1,3-diones, or difurans as the nucleophile.
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Affiliation(s)
- Russell L Ford
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Isabel Alt
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States.,Institut für Organische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , DE-70569 Stuttgart , Germany
| | - Navendu Jana
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Tom G Driver
- Department of Chemistry , University at Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
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14
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Ferretti F, Ramadan DR, Ragaini F. Transition Metal Catalyzed Reductive Cyclization Reactions of Nitroarenes and Nitroalkenes. ChemCatChem 2019. [DOI: 10.1002/cctc.201901065] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Francesco Ferretti
- Dipartimento di ChimicaUniversità degli Studi di Milano via C. Golgi 19 Milano 20133 Italy
| | - Doaa R. Ramadan
- Dipartimento di ChimicaUniversità degli Studi di Milano via C. Golgi 19 Milano 20133 Italy
| | - Fabio Ragaini
- Dipartimento di ChimicaUniversità degli Studi di Milano via C. Golgi 19 Milano 20133 Italy
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15
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Chen C, Liu R. Gold‐catalyzed [4+2] Annulations of Dienes with Nitrosoarenes as 4 π Donors: Nitroso‐Povarov Reactions. Angew Chem Int Ed Engl 2019; 58:9831-9835. [DOI: 10.1002/anie.201903615] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/16/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Ching‐Nung Chen
- Frontier Research Centers on Fundamental and Applied Science of Matters and Department of ChemistryNational Tsing-Hua University Hsinchu Taiwan
| | - Rai‐Shung Liu
- Frontier Research Centers on Fundamental and Applied Science of Matters and Department of ChemistryNational Tsing-Hua University Hsinchu Taiwan
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16
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Chen C, Liu R. Gold‐catalyzed [4+2] Annulations of Dienes with Nitrosoarenes as 4 π Donors: Nitroso‐Povarov Reactions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903615] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ching‐Nung Chen
- Frontier Research Centers on Fundamental and Applied Science of Matters and Department of ChemistryNational Tsing-Hua University Hsinchu Taiwan
| | - Rai‐Shung Liu
- Frontier Research Centers on Fundamental and Applied Science of Matters and Department of ChemistryNational Tsing-Hua University Hsinchu Taiwan
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17
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Qiu S, Liang R, Wang Y, Zhu S. Domino Reaction between Nitrosoarenes and Ynenones for Catalyst-Free Preparation of Indanone-Fused Tetrahydroisoxazoles. Org Lett 2019; 21:2126-2129. [DOI: 10.1021/acs.orglett.9b00426] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Shaotong Qiu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province and Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Renxiao Liang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province and Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | | | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province and Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Singfar Laboratories, Guangzhou, 510670, China
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18
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Ieronimo G, Palmisano G, Maspero A, Marzorati A, Scapinello L, Masciocchi N, Cravotto G, Barge A, Simonetti M, Ameta KL, Nicholas KM, Penoni A. A novel synthesis of N-hydroxy-3-aroylindoles and 3-aroylindoles. Org Biomol Chem 2019; 16:6853-6859. [PMID: 30065979 DOI: 10.1039/c8ob01471j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A straightforward indole synthesis via annulation of C-nitrosoaromatics with conjugated terminal alkynones was realised achieving a simple, highly regioselective, atom- and step economical access to 3-aroylindoles in moderate to good yields. Further functionalizations of indole scaffolds were investigated and an easy way to JWH-018, a synthetic cannabinoid, was achieved.
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Affiliation(s)
- Gabriella Ieronimo
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, via Valleggio 9, 22100, Como, Italy.
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19
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Ghosh S, Kumar G, Naveen N, Pradhan S, Chatterjee I. EDA complex directed N-centred radical generation from nitrosoarenes: a divergent synthetic approach. Chem Commun (Camb) 2019; 55:13590-13593. [DOI: 10.1039/c9cc07277b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Centred radicals generated via the formation of EDA complexes are added to electron-deficient allylsulfones to produce isoxazolidines, aziridines or β-amino acid derivatives.
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Affiliation(s)
- Soumen Ghosh
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
| | - Gautam Kumar
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
| | - Naveen Naveen
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
| | - Suman Pradhan
- Department of Chemistry
- Indian Institute of Technology Ropar
- Rupnagar
- India
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20
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EL-Atawy MA, Formenti D, Ferretti F, Ragaini F. Synthesis of 3,6-Dihydro-2H-[1, 2]-Oxazines from Nitroarenes and Conjugated Dienes, Catalyzed by Palladium/Phenanthroline Complexes and Employing Phenyl Formate as a CO Surrogate. ChemCatChem 2018. [DOI: 10.1002/cctc.201801223] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Mohamed A. EL-Atawy
- Chemistry Department, Faculty of Science; Taibah University; Yanbu 46423 Saudi Arabia
- Chemistry Department, Faculty of Science; Alexandria University; P.O. 426 Ibrahemia Alexandria 21321 Egypt
| | - Dario Formenti
- Dipartimento di Chimica; Università degli Studi di Milano Via Golgi 19; 20133 Milano Italy
| | - Francesco Ferretti
- Dipartimento di Chimica; Università degli Studi di Milano Via Golgi 19; 20133 Milano Italy
| | - Fabio Ragaini
- Dipartimento di Chimica; Università degli Studi di Milano Via Golgi 19; 20133 Milano Italy
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21
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Affiliation(s)
- So Won Youn
- Center for New Directions in Organic Synthesis, Department of Chemistry and Institute for Natural Sciences; Hanyang University; Seoul 04763 Korea
| | - Tae Yun Ko
- Center for New Directions in Organic Synthesis, Department of Chemistry and Institute for Natural Sciences; Hanyang University; Seoul 04763 Korea
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22
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Castiñeira Reis M, Marín-Luna M, Silva López C, Faza ON. Mechanism of the Molybdenum-Mediated Cadogan Reaction. ACS OMEGA 2018; 3:7019-7026. [PMID: 31458865 PMCID: PMC6644586 DOI: 10.1021/acsomega.8b01278] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 06/13/2018] [Indexed: 05/24/2023]
Abstract
Oxygen atom transfer reactions are receiving increasing attention because they bring about paramount transformations in the current biomass processing industry. Significant efforts have therefore been made lately in the development of efficient and scalable methods to deoxygenate organic compounds. One recent alternative involves the modification of the Cadogan reaction in which a Mo(VI) core catalyzes the reduction of o-nitrostyrene derivatives to indoles in the presence of PPh3. We have used density functional theory calculations to perform a comprehensive mechanistic study on this transformation, in which we find two clearly defined stages: an associative path from the nitro to the nitroso compound, characterized by the reduction of the catalyst in the first step, and a peculiar mechanism involving oxazaphosphiridine and nitrene intermediates leading to an indole product, where the metal catalyst does not participate.
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Affiliation(s)
- Marta Castiñeira Reis
- Departamento
de Química Orgánica, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Marta Marín-Luna
- Departamento
de Química Orgánica, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Carlos Silva López
- Departamento
de Química Orgánica, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
| | - Olalla Nieto Faza
- Departamento
de Química Orgánica, Universidade de Vigo, Campus As Lagoas, 32004 Orense, Spain
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23
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EL-Atawy MA, Ferretti F, Ragaini F. A Synthetic Methodology for Pyrroles from Nitrodienes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701814] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mohamed A. EL-Atawy
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
- Chemistry Department; Faculty of Science; Alexandria University; P.O. 426 Ibrahemia 21321 Alexandria Egypt
| | - Francesco Ferretti
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Fabio Ragaini
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
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24
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Sharma P, Jadhav PD, Skaria M, Liu RS. Stereoselective annulation between an allene, an alkene, and two nitrosoarenes to access bis(isoxazoliodine) derivatives. Org Biomol Chem 2018; 15:9389-9397. [PMID: 29091104 DOI: 10.1039/c7ob02087b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This work reports metal-free annulations between one allene, two nitrosoarenes and one electron-deficient alkene to afford bis(isoxazolidine) derivatives stereoselectively. This process involves an initial formation of isoxazolidin-4-imine oxides, followed by their dipolar [3 + 2]-cycloaddition with electron-deficient alkenes. To highlight the utility, the annulations of 5-alleneyl-1-enes with nitrosoarenes were also feasible to afford the desired bis(isoxazolidine) products with excellent stereocontrol. The resulting bis(isoxazolidine) products produced from two systems were reduced with Zn/MeOH to induce reductive N-O cleavages, yielding branched polyaminols stereoselectively.
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Affiliation(s)
- Pankaj Sharma
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, 30013, Republic of China.
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25
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Roy SK, Tiwari A, Saleem M, Jana CK. Metal free direct C(sp2)–H arylaminations using nitrosoarenes to 2-hydroxy-di(het)aryl amines as multifunctional Aβ-aggregation modulators. Chem Commun (Camb) 2018; 54:14081-14084. [DOI: 10.1039/c8cc08470j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A direct C(sp2)–H arylamination of 2-hydroxyarenes using nitrosoarenes was achieved under metal free conditions without the aid of additional reagents/steps for N–O bond cleavage.
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Affiliation(s)
- Subhra Kanti Roy
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Anuj Tiwari
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
| | - Mohammed Saleem
- Department of Life Sciences
- National Institute of Technology
- Rourkela
- India
| | - Chandan K. Jana
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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26
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Affiliation(s)
- Zhiping Yin
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Zechao Wang
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock; Albert-Einstein-Straße 29a 18059 Rostock Germany
- Department of Chemistry; Zhejiang Sci-Tech University, Xiasha Campus; Hangzhou 310018 People's Republic of China
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27
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28
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Liu J, Skaria M, Sharma P, Chiang YW, Liu RS. Ground-state dioxygen undergoes metal-free [3 + 2]-annulations with allenes and nitrosoarenes under ambient conditions. Chem Sci 2017; 8:5482-5487. [PMID: 28970928 PMCID: PMC5613744 DOI: 10.1039/c7sc01770g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 05/20/2017] [Indexed: 11/21/2022] Open
Abstract
The cycloadditions of molecular dioxygen with neutral π-bond motifs rely heavily on singlet-state 1O2, whereas ground state 3O2 is chemically inactive. Here we report novel [3 + 2]-annulations among ground-state 3O2 (1 bar), allenes, and nitrosoarenes at low temperatures, efficiently yielding dioxygen-containing oxacycles. With less hindered 1-arylallene derivatives, these dioxygen species undergo skeletal rearrangement to 3-hydroxy-1-ketonyl-2-imine oxides. These cycloadditions represent valuable one-pot O,N,O-trifunctionalizations of allenes. Our EPR experiments confirm the presence of 1,4-diradical intermediates from an allene/nitrosoarene mixture, which manifest the hidden diradical properties of nitrosoarenes.
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Affiliation(s)
- Jinxian Liu
- Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China . .,College of Chemistry & Materials Science , Longyan University , Fujian , China
| | - Manisha Skaria
- Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China .
| | - Pankaj Sharma
- Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China .
| | - Yun-Wei Chiang
- Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China .
| | - Rai-Shung Liu
- Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China .
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29
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Yang Y, Ren HX, Chen F, Zhang ZB, Zou Y, Chen C, Song XJ, Tian F, Peng L, Wang LX. Organocatalytic Asymmetric Annulation between Hydroxymaleimides and Nitrosoarenes: Stereoselective Preparation of Chiral Quaternary N-Hydroxyindolines. Org Lett 2017; 19:2805-2808. [DOI: 10.1021/acs.orglett.7b00893] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Yang
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong-Xia Ren
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feng Chen
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng-Bing Zhang
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ying Zou
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Chen
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang-Jia Song
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang Tian
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Lin Peng
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Li-Xin Wang
- Key Laboratory of
Asymmetric Synthesis and Chirotechnology of Sichuan Province, Chengdu
Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
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30
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Purkait A, Roy SK, Srivastava HK, Jana CK. Metal-Free Sequential C(sp 2)-H/OH and C(sp 3)-H Aminations of Nitrosoarenes and N-Heterocycles to Ring-Fused Imidazoles. Org Lett 2017; 19:2540-2543. [PMID: 28485602 DOI: 10.1021/acs.orglett.7b00832] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hydrogen bond assisted ortho-selective C(sp2)-H amination of nitrosoarenes and subsequent α-C(sp3)-H functionalization of aliphatic amines is achieved under metal-free conditions. The annulation of nitrosoarenes and 2-hydroxy-C-nitroso compounds with N-heterocycles provides a facile excess to a wide range of biologically relevant ring-fused benzimidazoles and structurally novel polycyclic imidazoles, respectively. Nucleophilic aromatic hydrogen substitution (SNArH) was found to be preferred over classical SNAr reaction during the C(sp2)-H amination of halogenated nitrosoarenes.
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Affiliation(s)
- Anisha Purkait
- Department of Chemistry, Indian Institute of Technology Guwahati , Guwahati, India 781039
| | - Subhra Kanti Roy
- Department of Chemistry, Indian Institute of Technology Guwahati , Guwahati, India 781039
| | | | - Chandan K Jana
- Department of Chemistry, Indian Institute of Technology Guwahati , Guwahati, India 781039
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31
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van der Werf A, Hribersek M, Selander N. N-Trifluoromethylation of Nitrosoarenes with Sodium Triflinate. Org Lett 2017; 19:2374-2377. [PMID: 28402669 DOI: 10.1021/acs.orglett.7b00908] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A highly efficient N-trifluoromethylation of nitrosoarenes is reported. The inexpensive and convenient Langlois reagent (sodium triflinate) is employed as a CF3-radical source in combination with a copper catalyst and an oxidant. N-Trifluoromethylated hydroxylamines are obtained in high yields within 1 h at room temperature. The addition of hydroquinone was found to be instrumental to prevent the formation of side products. The method is high-yielding, is scalable, and displays a high functional group tolerance.
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Affiliation(s)
- Angela van der Werf
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Matic Hribersek
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Nicklas Selander
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University , SE-106 91 Stockholm, Sweden
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32
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Ferretti F, Formenti D, Ragaini F. The reduction of organic nitro compounds by carbon monoxide as an effective strategy for the synthesis of N-heterocyclic compounds: a personal account. RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI 2017. [DOI: 10.1007/s12210-017-0601-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Fountoulaki S, Gkizis PL, Symeonidis TS, Kaminioti E, Karina A, Tamiolakis I, Armatas GS, Lykakis IN. Titania-Supported Gold Nanoparticles Catalyze the Selective Oxidation of Amines into Nitroso Compounds in the Presence of Hydrogen Peroxide. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500957] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Affiliation(s)
- Kenneth M. Nicholas
- Department of Chemistry and
Biochemistry Stephenson Life Sciences Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
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35
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Kancherla R, Naveen T, Maiti D. Divergent reactivity in palladium-catalyzed annulation with diarylamines and α,β-unsaturated acids: direct access to substituted 2-quinolinones and indoles. Chemistry 2015; 21:8723-6. [PMID: 25941155 DOI: 10.1002/chem.201501208] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Indexed: 12/20/2022]
Abstract
A palladium-catalyzed CH activation strategy has been successfully employed for exclusive synthesis of a variety of 3-substituted indoles. A [3+3] annulation for synthesizing substituted 2-quinolinones was recently developed by reaction of α,β-unsaturated carboxylic acids with diarylamines under acidic conditions. In the present work, an analogous [3+2] annulation is achieved from the same set of starting materials under basic conditions to generate 1,3-disubstituted indoles exclusively. Mechanistic studies revealed an ortho-palladation-π-coordination-β-migratory insertion-β-hydride elimination reaction sequence to be operative under the reaction conditions.
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Affiliation(s)
- Rajesh Kancherla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076 (India)
| | - Togati Naveen
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076 (India)
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076 (India).
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36
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Yu FC, Hao XP, Huang R, Yan SJ, Lin J. Synthesis of 2-nitroso heterocyclic ketene aminals with (E)-1-nitro-4-(2-nitrovinyl)-benzene as the nitrosating agent. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.01.063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Fabig S, Haberhauer G, Gleiter R. Dimerization of Two Alkyne Units: Model Studies, Intermediate Trapping Experiments, and Kinetic Studies. J Am Chem Soc 2015; 137:1833-43. [DOI: 10.1021/ja510699b] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sven Fabig
- Institut
für Organische Chemie, Universität Duisburg-Essen, Universitätsstrasse
7, D-45117 Essen, Germany
| | - Gebhard Haberhauer
- Institut
für Organische Chemie, Universität Duisburg-Essen, Universitätsstrasse
7, D-45117 Essen, Germany
| | - Rolf Gleiter
- Organisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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38
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Manna S, Narayan R, Golz C, Strohmann C, Antonchick AP. Regioselective annulation of nitrosopyridine with alkynes: straightforward synthesis of N-oxide-imidazopyridines. Chem Commun (Camb) 2015; 51:6119-22. [DOI: 10.1039/c5cc00533g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We have developed intermolecular annulation of 2-nitrosopyridine derivatives with substituted alkynes for the regioselective access of N-oxide-imidazo[1,2-a]pyridines.
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Affiliation(s)
- Srimanta Manna
- Max-Planck Institute of Molecular Physiology
- Abteilung Chemische Biologie
- Dortmund
- Germany
- Technische Universität Dortmund
| | - Rishikesh Narayan
- Max-Planck Institute of Molecular Physiology
- Abteilung Chemische Biologie
- Dortmund
- Germany
| | - Christopher Golz
- Technische Universität Dortmund
- Fakultät für Chemie und Chemische Biologie
- Anorganische Chemie
- Dortmund
| | - Carsten Strohmann
- Technische Universität Dortmund
- Fakultät für Chemie und Chemische Biologie
- Anorganische Chemie
- Dortmund
| | - Andrey P. Antonchick
- Max-Planck Institute of Molecular Physiology
- Abteilung Chemische Biologie
- Dortmund
- Germany
- Technische Universität Dortmund
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39
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Guo T, Huang F, Yu L, Yu Z. Indole synthesis through transition metal-catalyzed C–H activation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.114] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Zardi P, Savoldelli A, Carminati DM, Caselli A, Ragaini F, Gallo E. Indoles Rather than Triazoles from the Ruthenium Porphyrin-Catalyzed Reaction of Alkynes with Aryl Azides. ACS Catal 2014. [DOI: 10.1021/cs5012712] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Paolo Zardi
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| | - Andrea Savoldelli
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| | | | - Alessandro Caselli
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| | - Fabio Ragaini
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| | - Emma Gallo
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
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41
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42
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Callebaut G, Meiresonne T, De Kimpe N, Mangelinckx S. Synthesis and Reactivity of 2-(Carboxymethyl)aziridine Derivatives. Chem Rev 2014; 114:7954-8015. [DOI: 10.1021/cr400582d] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Gert Callebaut
- Department of Sustainable
Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Tamara Meiresonne
- Department of Sustainable
Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Norbert De Kimpe
- Department of Sustainable
Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Sven Mangelinckx
- Department of Sustainable
Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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43
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Merino P, Tejero T, Dı́ez-Martínez A. Theoretical Elucidation of the Mechanism of the Cycloaddition between Nitrone Ylides and Electron-Deficient Alkenes. J Org Chem 2014; 79:2189-202. [DOI: 10.1021/jo500037h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- P. Merino
- Laboratorio
de Sı́ntesis
Asimétrica, Departamento de Sı́ntesis y Estructura
de Biomoléculas, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Organica, Universidad de Zaragoza, CSIC, E-50009 Zaragoza, Aragón, Spain
| | - T. Tejero
- Laboratorio
de Sı́ntesis
Asimétrica, Departamento de Sı́ntesis y Estructura
de Biomoléculas, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Organica, Universidad de Zaragoza, CSIC, E-50009 Zaragoza, Aragón, Spain
| | - A. Dı́ez-Martínez
- Laboratorio
de Sı́ntesis
Asimétrica, Departamento de Sı́ntesis y Estructura
de Biomoléculas, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Organica, Universidad de Zaragoza, CSIC, E-50009 Zaragoza, Aragón, Spain
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44
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Singh RR, Liu RS. Gold-catalyzed 1,2-iminonitronation of electron-deficient alkynes with nitrosoarenes to afford α-imidoyl nitrones. Chem Commun (Camb) 2014; 50:15864-6. [DOI: 10.1039/c4cc06962e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold-catalyzed 1,2-iminonitronation of diverse propiolate derivatives with nitrosoarenes to give α-imidoyl nitrones is described.
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Affiliation(s)
| | - Rai-Shung Liu
- National Tsing Hua university
- Chemistry
- Hsinchu, Taiwan
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45
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Ieronimo G, Mondelli A, Tibiletti F, Maspero A, Palmisano G, Galli S, Tollari S, Masciocchi N, Nicholas KM, Tagliapietra S, Cravotto G, Penoni A. A simple, efficient, regioselective and one-pot preparation of N-hydroxy- and N–O-protected hydroxyindoles via cycloaddition of nitrosoarenes with alkynes. Synthetic scope, applications and novel by-products. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.072] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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A structurally diverse heterocyclic library by decoration of oxcarbazepine scaffold. Molecules 2013; 18:13705-22. [PMID: 24201207 PMCID: PMC6270634 DOI: 10.3390/molecules181113705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 11/01/2013] [Accepted: 11/04/2013] [Indexed: 11/29/2022] Open
Abstract
A library of new heterocyclic systems was synthesized starting from oxcarbazepine (OXC, Trileptal®, 10-oxo-10,11-dihydro-5H-dibenzo[b,f]azepine-5-carboxamide). The key for these transformations is the α-enolizable ketone present on the [d]-side of our starting material OXC, thus, an in depth investigation of the literature to find heteroannulation reactions for substrates carrying an α-enolizable ketone gave us a boost to discover an excellent derivatization strategy and [3+2], [4+2] and [4+1] approaches were successfully developed. Almost always a pre-functionalization was needed, but also the direct one-pot heterocycle construction was also explored.
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Broggini G, Beccalli EM, Fasana A, Gazzola S. Palladium-catalyzed dual C-H or N-H functionalization of unfunctionalized indole derivatives with alkenes and arenes. Beilstein J Org Chem 2012; 8:1730-46. [PMID: 23209507 PMCID: PMC3511007 DOI: 10.3762/bjoc.8.198] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Accepted: 09/10/2012] [Indexed: 01/10/2023] Open
Abstract
This review highlights the development of palladium-catalyzed C-H and N-H functionalization reactions involving indole derivatives. These procedures require unactivated starting materials and are respectful of the basic principle of sustainable chemistry tied to atom economy.
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Affiliation(s)
- Gianluigi Broggini
- Dipartimento di Scienza e Alta Tecnologia, Università dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Egle M Beccalli
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini” Università di Milano Via Venezian 21, 20133 Milano, Italy
| | - Andrea Fasana
- Dipartimento di Scienza e Alta Tecnologia, Università dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Silvia Gazzola
- Dipartimento di Scienza e Alta Tecnologia, Università dell’Insubria, Via Valleggio 11, 22100 Como, Italy
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Uchuskin MG, Molodtsova NV, Abaev VT, Trushkov IV, Butin AV. Furan ring opening–indole ring closure: SnCl2-induced reductive transformation of difuryl(2-nitroaryl)methanes into 2-(2-acylvinyl)indoles. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Molander GA, Cavalcanti LN. Nitrosation of aryl and heteroaryltrifluoroborates with nitrosonium tetrafluoroborate. J Org Chem 2012; 77:4402-13. [PMID: 22524190 PMCID: PMC3345084 DOI: 10.1021/jo300551m] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Organotrifluoroborates have emerged as an alternative to toxic and air- and moisture-sensitive organometallic species for the synthesis of functionalized aryl and heteroaryl compounds. It has been shown that the trifluoroborate moiety can be easily converted into a variety of different substituents in a late synthetic stage. In this paper, we disclose a mild, selective, and convenient method for the ipso-nitrosation of organotrifluoroborates using nitrosonium tetrafluoroborate (NOBF(4)). Aryl- and heteroaryltrifluoroborates were converted into the corresponding nitroso products in good to excellent yields. This method proved to be tolerant of a broad range of functional groups.
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Affiliation(s)
- Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
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Pagar VV, Jadhav AM, Liu RS. Gold-catalyzed formal [3 + 3] and [4 + 2] cycloaddition reactions of nitrosobenzenes with alkenylgold carbenoids. J Am Chem Soc 2011; 133:20728-31. [PMID: 22128862 DOI: 10.1021/ja209980d] [Citation(s) in RCA: 169] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report two new formal cycloaddition reactions between nitrosobenzenes and alkenylgold carbenoids. We obtained quinoline oxides 3 in satisfactory yields from the gold-catalyzed [3 + 3]-cycloadditions between nitrosobenzenes and alkenyldiazo esters 1. For propargyl esters 5, its resulting gold carbenes react with nitrosobenzene to give alkenylimine 8, followed by a [4 + 2]-cycloaddition with nitrosobenzene.
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Affiliation(s)
- Vinayak Vishnu Pagar
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, ROC
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