1
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Shahamirian M, Wieczorkiewicz PA, Krygowski TM, Szatylowicz H. Substituent Effects from the Point of View of Energetics and Molecular Geometry in Acene, Polyene, and Polyyne Derivatives. J Org Chem 2023. [PMID: 37267218 DOI: 10.1021/acs.joc.2c02936] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The substituent effect (SE) is one of the most important topics in organic chemistry and related fields, and Hammett constants (σ) are commonly used to describe it. The results of the computational studies carried out for Y-R-X systems (reaction sites Y = NO2, O-; substituents X = NO2, CN, Cl, H, OH, NH2; spacers R = polyene, polyyne, acene with n = 1-5 repeatable units) show that the substituent properties depend significantly on n, the type of R, and Y. Results of the analysis of the substituent effect stabilization energy and geometrical parameters of the Y-R-X systems reveal that (i) the SE strength and its inductive and resonance components decay with the increase in spacer length, its weakening depends on the Y and R type; quantitative relations describing decay are presented; (ii) the ratio between inductive and resonance effect strength changes with n and depends on Y; (iii) differences in the substituents' properties are examples of reverse SE; (iv) in general, structural parameters are mutually well correlated as well as with the SE descriptors; (v) due to the strong O- resonance effect, the changes in π-electron delocalization within R are well correlated with the SE strength only for Y = O- systems.
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Affiliation(s)
- Mozhgan Shahamirian
- Department of Chemistry, Faculty of Science, Islamic Azad University, Sarvestan Branch, Sarvestan 73451-173, Iran
| | - Paweł A Wieczorkiewicz
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Tadeusz M Krygowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Halina Szatylowicz
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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2
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Liu YF, Hu CW, Yang GP. Recent advances in polyoxometalates acid-catalyzed organic reactions. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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3
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Sagitova EF, Tomilin DN, Sobenina LN, Ushakov IA, Apartsin KA, Trofimov BA. Acyl-tetrahydroindolyl-capped 1,3-diynes in oxidative [4 + 2]-cycloaddition with benzylamine: a one-pot access to 2-acyl-6-phenyl-5-tetrahydroindolylpyridines. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Dwari S, Nath PP, Jana CK. Ring Opening of Pyrrolinium Ions Enabled Regioselective Synthesis of 4-Alkyl N-Arylpyrazoles. J Org Chem 2022; 87:11947-11957. [PMID: 36069722 DOI: 10.1021/acs.joc.2c00727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An unprecedented method for the regioselective synthesis of 1,3-diaryl 4-alkyl pyrazoles has been reported. A wide variety of 1,3-diaryl 4-alkyl pyrazoles were synthesized as a single regioisomer via a ring-opening cyclization reaction of unsaturated pyrrolinium ions in the presence of arylhydrazines. This method avoids using additional alkylation steps and hazardous oxidants that generally are essential for the synthesis of 4-alkyl N-arylpyrazoles.
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Affiliation(s)
- Soumita Dwari
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Partha Partim Nath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Chandan K Jana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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5
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Burilov VA, Belov RN, Nugmanov RI, Solovieva SE, Antipin IS. Hydrazine-mediated C-O bond reductive cleavage in some bis- and mono-O-substituted derivatives of 4-tert-butylcalix[4]arene. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3556-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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6
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Zheng D, Bai R, Li M, Gu Y. MOF‐Supported Copper Complex‐Catalyzed Synthesis of Unsymmetrical 1,3‐Diynes Without External Additives. ChemCatChem 2022. [DOI: 10.1002/cctc.202200235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Deng‐Yue Zheng
- Key laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Rongxian Bai
- Key laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Minghao Li
- Key laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China
| | - Yanlong Gu
- Key laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China
- School of Chemistry and Chemical Engineering Shihezi University Shihezi Xinjiang 832003 P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Lanzhou 730000 P. R. China
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7
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Abstract
Metal-catalyzed hydrofunctionalization reactions of alkynes, i.e., the addition of Y–H units (Y = heteroatom or carbon) across the carbon–carbon triple bond, have attracted enormous attention for decades since they allow the straightforward and atom-economic access to a wide variety of functionalized olefins and, in its intramolecular version, to relevant heterocyclic and carbocyclic compounds. Despite conjugated 1,3-diynes being considered key building blocks in synthetic organic chemistry, this particular class of alkynes has been much less employed in hydrofunctionalization reactions when compared to terminal or internal monoynes. The presence of two C≡C bonds in conjugated 1,3-diynes adds to the classical regio- and stereocontrol issues associated with the alkyne hydrofunctionalization processes’ other problems, such as the possibility to undergo 1,2-, 3,4-, or 1,4-monoadditions as well as double addition reactions, thus increasing the number of potential products that can be formed. In this review article, metal-catalyzed hydrofunctionalization reactions of these challenging substrates are comprehensively discussed.
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8
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Abstract
This review highlights the hydroelementation reactions of conjugated and separated diynes, which depending on the process conditions, catalytic system, as well as the type of reagents, leads to the formation of various products: enynes, dienes, allenes, polymers, or cyclic compounds. The presence of two triple bonds in the diyne structure makes these compounds important reagents but selective product formation is often difficult owing to problems associated with maintaining appropriate reaction regio- and stereoselectivity. Herein we review this topic to gain knowledge on the reactivity of diynes and to systematise the range of information relating to their use in hydroelementation reactions. The review is divided according to the addition of the E-H (E = Mg, B, Al, Si, Ge, Sn, N, P, O, S, Se, Te) bond to the triple bond(s) in the diyne, as well as to the type of the reagent used, and the product formed. Not only are the hydroelementation reactions comprehensively discussed, but the synthetic potential of the obtained products is also presented. The majority of published research is included within this review, illustrating the potential as well as limitations of these processes, with the intent to showcase the power of these transformations and the obtained products in synthesis and materials chemistry.
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Affiliation(s)
- Jędrzej Walkowiak
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan.
| | - Jakub Szyling
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan. .,Adam Mickiewicz University in Poznan, Faculty of Chemistry, Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland
| | - Adrian Franczyk
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan.
| | - Rebecca L Melen
- Cardiff Catalysis Institute, Cardiff University, School of Chemistry, Park Place, Main Building, Cardiff CF10 3AT, Cymru/Wales, UK.
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9
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Chandrasekharan SP, Dhami A, Kumar S, Mohanan K. Recent advances in pyrazole synthesis employing diazo compounds and synthetic analogues. Org Biomol Chem 2022; 20:8787-8817. [DOI: 10.1039/d2ob01918c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This review summarizes the recent developments in the construction of pyrazoles using diazo compounds, nitrile imines and their synthetic equivalents.
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Affiliation(s)
- Sanoop P. Chandrasekharan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Anamika Dhami
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Sandeep Kumar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy of Scientific and Innovative Research, Ghaziabad-201002, India
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10
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Guo H, Zhang S, Yu X, Feng X, Yamamoto Y, Bao M. [3 + 2] Cycloaddition of α-Aryl-α-diazoacetates with Terminal Alkynes via the Cooperative Catalysis of Palladium and Acid. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02533] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hongyu Guo
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Sheng Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Xiaoqiang Yu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
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11
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Affiliation(s)
- Zhenrong Liu
- College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou, Gansu 730070 P. R. China
| | - Zheng Li
- College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou, Gansu 730070 P. R. China
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12
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Neto JSS, Zeni G. Alkynes and Nitrogen Compounds: Useful Substrates for the Synthesis of Pyrazoles. Chemistry 2020; 26:8175-8189. [PMID: 31990413 DOI: 10.1002/chem.201905276] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/24/2020] [Indexed: 02/06/2023]
Abstract
The easy preparation and functionalization of pyrazoles associated with their innumerable biological properties have made this class of N-heterocycles very attractive for the development of new synthetic routes and applications. The cyclization reactions of alkynes and nitrogen compounds represent a powerful tool for the preparation of pyrazoles. This Review covers the recent advances in the preparation of pyrazoles by reacting alkynes and nitrogen compounds under transition-metal-catalyzed or metal-free conditions.
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Affiliation(s)
- Jose S S Neto
- Department of Biochemistry and Molecular Biology Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
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13
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Li Y, Qiu S, Fan L, Yin G. Cooperative Palladium and Copper Catalysis: One‐pot Synthesis of Diamino‐Substituted Naphthalenes from Aryl Halides, 1,4‐Bis(trimethylsilyl)butadiyne and Amines. ChemCatChem 2020. [DOI: 10.1002/cctc.201901745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yuan Li
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Shaozhong Qiu
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Ling Fan
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Guodong Yin
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
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14
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Sokolnicki T, Szyling J, Franczyk A, Walkowiak J. Regio‐ and Stereoselective Synthesis of Enynyl Boronates via Ruthenium‐Catalyzed Hydroboration of 1,4‐Diaryl‐Substituted 1,3‐Diynes. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900939] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tomasz Sokolnicki
- Adam Mickiewicz University in PoznanCenter for Advanced Technology Uniwersytetu Poznańskiego 10 61–712 Poznań Poland
- Adam Mickiewicz University in Poznan Faculty of Chemistry Uniwersytetu Poznańskiego 8 61-712 Poznań Poland
| | - Jakub Szyling
- Adam Mickiewicz University in PoznanCenter for Advanced Technology Uniwersytetu Poznańskiego 10 61–712 Poznań Poland
- Adam Mickiewicz University in Poznan Faculty of Chemistry Uniwersytetu Poznańskiego 8 61-712 Poznań Poland
| | - Adrian Franczyk
- Adam Mickiewicz University in PoznanCenter for Advanced Technology Uniwersytetu Poznańskiego 10 61–712 Poznań Poland
| | - Jędrzej Walkowiak
- Adam Mickiewicz University in PoznanCenter for Advanced Technology Uniwersytetu Poznańskiego 10 61–712 Poznań Poland
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15
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Ivanovich RA, Quartus JAM, Das Neves N, Loiseau F, Raymond M, Beauchemin AM. Aminimide Synthesis Using Concerted Amination Reactions of Alkenes: Scope and Mechanistic Information. J Org Chem 2019; 84:9792-9800. [PMID: 31290665 DOI: 10.1021/acs.joc.9b01259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aminimides are key intermediates in the thermal cycloadditions of suitable alkenyl-hydrazine derivatives. Substrate modifications (β-N,N-dialkyl) allowed the isolation of these reactive intermediates, and the analysis of their stereochemistry provided support for concerted (Cope-type) hydroamination and concerted [3 + 2] aminocarbonylation reaction pathways. This work also establishes the applicability of these approaches to form complex aminimides in moderate to excellent yields.
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Affiliation(s)
- Ryan A Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Jasper A M Quartus
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Nicolas Das Neves
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Francis Loiseau
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - Michaël Raymond
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie-Curie , Ottawa , Ontario K1N 6N5 , Canada
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16
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Metal-free and highly regioselective synthesis of N-heteroaryl substituted pyrazoles from α,β-unsaturated N-tosylhydrazones and heteroaryl chlorides. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.07.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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17
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Ying WW, Bao WH, Xu XD, Wang YN, Song SZ, Liang H, Dong Y, Wei WT, Liu YY, Li Q. A Base- and Ligand-Free Copper-Catalyzed Oxidative Coupling of Terminal Alkyl Alkynes. ChemistrySelect 2019. [DOI: 10.1002/slct.201803923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wei-Wei Ying
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Hui Bao
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Xu-Dong Xu
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Yi-Ning Wang
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Si-Zhe Song
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Hongze Liang
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Youren Dong
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 China
| | - Yan-Yun Liu
- Department of Chemistry and Materials Engineering; Huaihua University; Huaihua 418008 China
| | - Qiang Li
- Institution of Functional Organic Molecules and Materials; School of Chemistry and Chemical Engineering, Liaocheng University; Liaocheng 252059 China
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18
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Ötvös SB, Georgiádes Á, Ozsvár D, Fülöp F. Continuous-flow synthesis of 3,5-disubstituted pyrazoles via sequential alkyne homocoupling and Cope-type hydroamination. RSC Adv 2019; 9:8197-8203. [PMID: 35518676 PMCID: PMC9061249 DOI: 10.1039/c9ra01590f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 03/04/2019] [Indexed: 12/28/2022] Open
Abstract
A flow chemistry-based approach is presented for the synthesis of 3,5-disubstituted pyrazoles via sequential copper-mediated alkyne homocoupling and Cope-type hydroamination of the intermediary 1,3-diynes in the presence of hydrazine as nucleophilic reaction partner. The proposed multistep methodology offers an easy and direct access to valuable pyrazoles from cheap and readily available starting materials and without the need for the isolation of any intermediates. A telescoped continuous-flow method is presented for the synthesis of 3,5-disubstituted pyrazoles via copper-mediated alkyne homocoupling and Cope-type hydroamination of the intermediary 1,3-dialkynes.![]()
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Affiliation(s)
- Sándor B. Ötvös
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Center
- H-6720 Szeged
- Hungary
| | - Ádám Georgiádes
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Center
- H-6720 Szeged
- Hungary
| | - Dániel Ozsvár
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Center
- H-6720 Szeged
- Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry
- University of Szeged
- Interdisciplinary Excellence Center
- H-6720 Szeged
- Hungary
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19
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One‐Pot Synthesis of Unsymmetrical 1,3‐Butadiyne Derivatives and their Application in the Synthesis of Unsymmetrical 2,5‐Diarylthiophenes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801242] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Yang GP, He X, Yu B, Hu CW. Cu1.5
PMo12
O40
-catalyzed condensation cyclization for the synthesis of substituted pyrazoles. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4532] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Guo-Ping Yang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing 100081 P. R. China
- China Academy of Engineering Physics; P. R. China
| | - Xing He
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing 100081 P. R. China
| | - Bing Yu
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou 450001 Henan Province P. R. China
| | - Chang-Wen Hu
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering; Beijing Institute of Technology; Beijing 100081 P. R. China
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21
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Ye X, Peng H, Wei C, Yuan T, Wojtas L, Shi X. Gold-Catalyzed Oxidative Coupling of Alkynes toward the Synthesis of Cyclic Conjugated Diynes. Chem 2018; 4:1983-1993. [PMID: 30911697 DOI: 10.1016/j.chempr.2018.07.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A gold-catalyzed oxidative coupling of alkynes was developed as an efficient approach for the synthesis of challenging cyclic conjugated diynes (CCD). Compared to the classical copper-promoted oxidative coupling reaction of alkynes, this gold-catalyzed process exhibits a faster reaction rate due to the rapid reductive elimination from the Au(III) intermediate. This unique reactivity thus allowed a challenging diyne macrocyclization to take place in high efficiency. Condition screening revealed a [(n-Bu)4N]+[Cl-Au-Cl]- salt as the optimal pre-catalyst. Macrocycles with ring size between 13 to 28 atoms were prepared in moderate to good yields, which highlighted the broad substrate scope of this new strategy. Furthermore, the synthetic utilities of the cyclic conjugated diynes for copper-free click chemistry have been demonstrated, which showcased the potential application of this strategy in biological systems.
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Affiliation(s)
- Xiaohan Ye
- Department of Chemistry, University of South Florida, Tampa, FL33620, USA
| | - Haihui Peng
- Department of Chemistry, University of South Florida, Tampa, FL33620, USA
| | - Chiyu Wei
- Department of Chemistry, University of South Florida, Tampa, FL33620, USA
| | - Teng Yuan
- Department of Chemistry, University of South Florida, Tampa, FL33620, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, FL33620, USA
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, Tampa, FL33620, USA.,Lead Contact
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22
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Kuleshova O, Khilya O, Volovenko Y, Mallet-Ladeira S, Dyakonenko V, Gras E. Expedited Route to Fully Substituted Amino-Pyrazole Building Blocks and Their Further Transformations. ACS OMEGA 2017; 2:8911-8927. [PMID: 31457419 PMCID: PMC6645537 DOI: 10.1021/acsomega.7b01419] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Accepted: 11/23/2017] [Indexed: 06/10/2023]
Abstract
We report here an efficient and easily reproducible two-step approach to heterocycle-substituted amino-pyrazoles from heterocyclic acetonitriles and their unprecedented subsequent transformations to fully substituted pyrazoles. Such transformations include regioselective derivatization from polyamino derivatives, formation of tetracyclic compounds in up to 45% overall yield, and deaminative transformations through diazotization, followed by arylation through Suzuki-Miyaura cross-coupling and C-H activation, providing arylated pyrazoles in up to 71% yield over four steps. This strategy allows the swift introduction of significant molecular complexity to a range of scaffolds.
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Affiliation(s)
- Olena Kuleshova
- Laboratoire
de Chimie de Coordination, Centre National
de la Recherche Scientifique, UPR 8241, Université Fédérale
Toulouse Midi-Pyrénées, 205, Route de Narbonne, Toulouse F-31077, France
- Chemistry
Department, Taras Shevchenko National University
of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Olga Khilya
- Chemistry
Department, Taras Shevchenko National University
of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Yulian Volovenko
- Chemistry
Department, Taras Shevchenko National University
of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Sonia Mallet-Ladeira
- Laboratoire
de Chimie de Coordination, Centre National
de la Recherche Scientifique, UPR 8241, Université Fédérale
Toulouse Midi-Pyrénées, 205, Route de Narbonne, Toulouse F-31077, France
| | - Viktoriya Dyakonenko
- SSI
“Institute for Single Crystals” National Academy of
Science of Ukraine, 60
Nauky Avenue, Kharkiv 61001, Ukraine
| | - Emmanuel Gras
- Laboratoire
de Chimie de Coordination, Centre National
de la Recherche Scientifique, UPR 8241, Université Fédérale
Toulouse Midi-Pyrénées, 205, Route de Narbonne, Toulouse F-31077, France
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23
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Ötvös SB, Georgiádes Á, Mészáros R, Kis K, Pálinkó I, Fülöp F. Continuous-flow oxidative homocouplings without auxiliary substances: Exploiting a solid base catalyst. J Catal 2017. [DOI: 10.1016/j.jcat.2017.02.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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24
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Abstract
Inter- or intramolecular hydroamination reactions are a paradigmatic example of modern sustainable organic chemistry, as they are a catalytic, 100% atom-economical, and waste-free process of fundamental simplicity in which an amine is added to an alkyne substrate. Many enamines are found in many natural and synthetic compounds possessing interesting physiological and biological activities. The development of synthetic protocols for such molecules and their transformation is a persistent research topic in pharmaceutical and organic chemistry. Hydroamination is conspicuously superior to the other accessible methods, such as the imination of ketones or the aminomercuration/demercuration of alkynes, that involve the stoichiometric use of toxic reagents. Additionally, the hydroamination of alkyne substrates has been successfully employed as a key step in synthesizing target molecules through total syntheses containing substituted indoles, pyrroles, imidazoles, and other heterocycles as core moieties. Many research groups have explored inter- or intramolecular hydroamination of alkynes for the synthesis of diversely substituted nitrogen heterocycles using expensive metal catalysts. However, in contrast to metal-catalyzed hydroamination, the base-mediated hydroamination of alkynes has not been extensively studied. Various inorganic (such as hydroxides, phosphates, and carbonates) and organic bases have been proven to be valuable reagents for achieving the hydroamination process. This method represents an attractive strategy for the construction of a broad range of nitrogen-containing compounds that prevents the formation of byproducts in the creation of a C-N linkage. The presence of a base is thought to facilitate the attack of nitrogen nucleophiles, such as indoles, pyrroles, and imidazoles, on unsaturated carbon substrates through the activation of the triple bond and thus transforming the electron-rich alkyne into an electrophile. In the past few years, we have been involved in the development of methods for the nucleophilic addition of N-heterocycles onto terminal and internal alkynes using alkali base catalysts to achieve new carbon-nitrogen bond-forming reactions. During our study, we discovered the regioselective preferential nucleophilic addition of N-heterocycles onto the haloarylalkyne over N-arylation of the aryl halide. In this Account, we summarize our latest achievements in regio-, stereo-, and chemoselective hydroamination chemistry of N-nucleophiles with alkynes using a superbasic medium to produce a broad range of highly functionalized vinyl and styryl enamines, which are valuable and versatile synthetic intermediates for the synthesis of bioactive compounds. Interestingly, the stereoselectivity of the addition products (kinetically stable Z and thermodynamically stable E isomers) was found to be dependent upon time. It is worthwhile to note that hydroaminated products formed by the addition reaction can further be utilized for the synthesis of indolo-/pyrrolo[2,1-a]isoquinolines, naphthyridines, and bisindolo/pyrrolo[2,1-a]isoquinolinesvia tandem cyclization. This chemistry is expected to find application in organic synthesis for constructing a diverse variety of fused π-conjugated compounds, enaminones, and C-C coupled products.
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Affiliation(s)
- Monika Patel
- Department of Chemistry, University of Delhi, Delhi-110007, India
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25
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Mirjafary Z, Sadighian H, Piri S, Saeidian H. Efficient synthesis of novel 1,3-diyne-based sulfonamides using CuCl2/Et3N as a robust catalytic system. J Sulphur Chem 2016. [DOI: 10.1080/17415993.2016.1263634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zohreh Mirjafary
- Department of Chemistry, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hamed Sadighian
- Department of Science, Payame Noor University (PNU), Tehran, Iran
| | - Samira Piri
- Department of Science, Payame Noor University (PNU), Tehran, Iran
| | - Hamid Saeidian
- Department of Science, Payame Noor University (PNU), Tehran, Iran
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26
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Verlinden S, Ballet S, Verniest G. Synthesis of Heterocycle-Bridged Peptidic Macrocycles through 1,3-Diyne Transformations. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601215] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Steven Verlinden
- Research group of Organic Chemistry; Department of Chemistry and Department of Bio-engineering Sciences; Faculty of Science and Bio-engineering Sciences; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
| | - Steven Ballet
- Research group of Organic Chemistry; Department of Chemistry and Department of Bio-engineering Sciences; Faculty of Science and Bio-engineering Sciences; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
| | - Guido Verniest
- Research group of Organic Chemistry; Department of Chemistry and Department of Bio-engineering Sciences; Faculty of Science and Bio-engineering Sciences; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
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27
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Su L, Dong J, Liu L, Sun M, Qiu R, Zhou Y, Yin SF. Copper Catalysis for Selective Heterocoupling of Terminal Alkynes. J Am Chem Soc 2016; 138:12348-51. [DOI: 10.1021/jacs.6b07984] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Lebin Su
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jianyu Dong
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Long Liu
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Mengli Sun
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yongbo Zhou
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shuang-Feng Yin
- State Key Laboratory of Chemo/Biosensing
and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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28
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Zhao J, Qiu J, Gou X, Hua C, Chen B. Iron(III) phthalocyanine chloride-catalyzed oxidation–aromatization of α,β-unsaturated ketones with hydrazine hydrate: Synthesis of 3,5-disubstituted 1H-pyrazoles. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61043-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Qi X, Bai R, Zhu L, Jin R, Lei A, Lan Y. Mechanism of Synergistic Cu(II)/Cu(I)-Mediated Alkyne Coupling: Dinuclear 1,2-Reductive Elimination after Minimum Energy Crossing Point. J Org Chem 2016; 81:1654-60. [DOI: 10.1021/acs.joc.5b02797] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaotian Qi
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Ruopeng Bai
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, People’s Republic of China
| | - Lei Zhu
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Rui Jin
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Aiwen Lei
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, People’s Republic of China
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
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30
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Bassaco MM, Fortes MP, Kaufman TS, Silveira CC. Metal-free synthesis of 3,5-disubstituted 1H- and 1-aryl-1H-pyrazoles from 1,3-diyne-indole derivatives employing two successive hydroaminations. RSC Adv 2015. [DOI: 10.1039/c4ra16439c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The uncatalyzed synthesis of 3,5-disubstituted 1H- and 1-aryl-1H-pyrazoles derived from 1,3-diyne indoles was successfully carried out in PEG 400. The scope and limitations of the reaction were studied.
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Affiliation(s)
- Mariana M. Bassaco
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
| | - Margiani P. Fortes
- Departamento de Química
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil
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31
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Bai R, Zhang G, Yi H, Huang Z, Qi X, Liu C, Miller JT, Kropf AJ, Bunel EE, Lan Y, Lei A. Cu(II)–Cu(I) Synergistic Cooperation to Lead the Alkyne C–H Activation. J Am Chem Soc 2014; 136:16760-3. [DOI: 10.1021/ja5097489] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ruopeng Bai
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Guanghui Zhang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Hong Yi
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Zhiliang Huang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Xiaotian Qi
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, P.R. China
| | - Chao Liu
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Jeffrey T. Miller
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - A. Jeremy Kropf
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Emilio E. Bunel
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, P.R. China
| | - Aiwen Lei
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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32
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Peng H, Xi Y, Ronaghi N, Dong B, Akhmedov NG, Shi X. Gold-Catalyzed Oxidative Cross-Coupling of Terminal Alkynes: Selective Synthesis of Unsymmetrical 1,3-Diynes. J Am Chem Soc 2014; 136:13174-7. [PMID: 25184690 DOI: 10.1021/ja5078365] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Haihui Peng
- C. Eugene
Bennett Department
of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Yumeng Xi
- C. Eugene
Bennett Department
of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Nima Ronaghi
- C. Eugene
Bennett Department
of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Boliang Dong
- C. Eugene
Bennett Department
of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Novruz G. Akhmedov
- C. Eugene
Bennett Department
of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Xiaodong Shi
- C. Eugene
Bennett Department
of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
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33
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Cycloaddition of 1,3-butadiynes: efficient synthesis of carbo- and heterocycles. Molecules 2014; 19:13788-802. [PMID: 25191872 PMCID: PMC6271912 DOI: 10.3390/molecules190913788] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 08/26/2014] [Accepted: 08/29/2014] [Indexed: 11/17/2022] Open
Abstract
Cycloaddition reactions of alkynes are elegant, atom-efficient transformations for the synthesis of carbo- and heterocycles, mostly aromatic, involving the construction of challenging skeletons of complex molecules. Therefore significant efforts have recently been devoted to the development of novel methodologies, efficient strategies and different catalytic systems to broaden the scope of these reactions. We summarize in this review the recent advances in the cycloaddition reactions of 1,3-butadiynes to provide facile and reliable approaches to various functionalized carbo- and heterocycles.
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34
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Ahammed S, Kundu D, Ranu BC. Cu-Catalyzed Fe-Driven Csp–Csp and Csp–Csp2 Cross-Coupling: An Access to 1,3-Diynes and 1,3-Enynes. J Org Chem 2014; 79:7391-8. [DOI: 10.1021/jo5011069] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sabir Ahammed
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Debasish Kundu
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Brindaban C. Ranu
- Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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35
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Wang Y, Wei D, Zhang W, Wang Y, Zhu Y, Jia Y, Tang M. A theoretical study on the mechanisms of the reactions between 1,3-dialkynes and ammonia derivatives for the formation of five-membered N-heterocycles. Org Biomol Chem 2014; 12:7503-14. [DOI: 10.1039/c4ob01015a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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36
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Sun J, Zhang HH, Wang JQ, Li JH. 1,4,7-Trimethyl-1,4,7-Triazacyclononane as a Low-Loading Catalyst: CuBr–tmtacn Catalysed Glaser reaction of Acetylenes. JOURNAL OF CHEMICAL RESEARCH 2014. [DOI: 10.3184/174751914x681970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Jian Sun
- College of Pharmaceutical Sciences, Zhejiang University of Technology, 310032, Hangzhou, P.R. China
| | - Hua-He Zhang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, 310032, Hangzhou, P.R. China
| | - Jian-Qiang Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, 310032, Hangzhou, P.R. China
| | - Jing-Hua Li
- College of Pharmaceutical Sciences, Zhejiang University of Technology, 310032, Hangzhou, P.R. China
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37
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Beauchemin AM. Recent developments in Cope-type hydroamination reactions of hydroxylamine and hydrazine derivatives. Org Biomol Chem 2014; 11:7039-50. [PMID: 24056974 DOI: 10.1039/c3ob41172a] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cope-type hydroaminations are versatile for the direct amination of alkenes, alkynes and allenes using hydroxylamines and hydrazine derivatives. These reactions occur via a concerted, 5-membered cyclic transition state that is the microscopic reverse of the Cope elimination. This article focuses on recent developments, including intermolecular variants, directed reactions, and asymmetric variants using aldehydes as tethering catalysts, and their applications in target-oriented synthesis.
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Affiliation(s)
- André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada. andre.beauchemin@uottawa
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38
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39
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Harigae R, Moriyama K, Togo H. Preparation of 3,5-disubstituted pyrazoles and isoxazoles from terminal alkynes, aldehydes, hydrazines, and hydroxylamine. J Org Chem 2014; 79:2049-58. [PMID: 24512630 DOI: 10.1021/jo4027116] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The reaction of terminal alkynes with n-BuLi, and then with aldehydes, followed by the treatment with molecular iodine, and subsequently hydrazines or hydroxylamine provided the corresponding 3,5-disubstituted pyrazoles or isoxazoles in good yields with high regioselectivity, through the formations of propargyl secondary alkoxides and α-alkynyl ketones. The present reactions are one-pot preparation of 3,5-disubstituted pyrazoles from terminal alkynes, aldehydes, molecular iodine, and hydrazines, and 3,5-disubstituted isoxazoles from terminal alkynes, aldehydes, molecular iodine, and hydroxylamine.
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Affiliation(s)
- Ryo Harigae
- Graduate School of Science, Chiba University , Yayoi-cho 1-33, Inage-ku, Chiba 263-8522, Japan
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40
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Mayo MS, Yu X, Zhou X, Feng X, Yamamoto Y, Bao M. Convenient Synthesis of Benzothiazoles and Benzimidazoles through Brønsted Acid Catalyzed Cyclization of 2-Amino Thiophenols/Anilines with β-Diketones. Org Lett 2014; 16:764-7. [DOI: 10.1021/ol403475v] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Muhammad Shareef Mayo
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Xiaoqiang Yu
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Xiaoyu Zhou
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Xiujuan Feng
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Yoshinori Yamamoto
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
- WPI-AIMR
(WPI-Advanced Institute for Materials Research), Tohoku University, Sendai 980-8577, Japan
| | - Ming Bao
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
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41
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Tang X, Huang L, Yang J, Xu Y, Wu W, Jiang H. Practical synthesis of pyrazoles via a copper-catalyzed relay oxidation strategy. Chem Commun (Camb) 2014; 50:14793-6. [DOI: 10.1039/c4cc06747a] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An efficient Cu-catalyzed cascade reaction involving N–O bond cleavage and C–C/C–N/N–N bond formations is developed to afford various 1,3- and 1,3,4-substituted pyrazoles.
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Affiliation(s)
- Xiaodong Tang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Liangbin Huang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Jidan Yang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Yanli Xu
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Wanqing Wu
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
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42
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Singha R, Ray JK. Transition metal free synthesis of 2,4,6-trisubstituted pyrimidines via Cope-type hydroamination of 1,4-diarylbuta-1,3-diynes. RSC Adv 2014. [DOI: 10.1039/c4ra07690g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
We have developed an efficient and transition metal free methodology for the synthesis of 2,4,6-trisubstituted pyrimidines by the Cope-type hydroamination reaction of 1,4-diarylbuta-1,3-diynes with amidines in DMSO solvent.
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Affiliation(s)
- Raju Singha
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302, India
| | - Jayanta K. Ray
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302, India
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43
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Cheng G, Zhang H, Cui X. Copper(i)-catalyzed homo-coupling of terminal alkynes at room temperature under solvent and base free conditions using O2as an oxidant. RSC Adv 2014. [DOI: 10.1039/c3ra43873b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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44
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Zhu Y, Lu WT, Sun HC, Zhan ZP. Lewis Base Catalyzed Synthesis of Multisubstituted 4-Sulfonyl-1H-Pyrazole Involving a Novel 1,3-Sulfonyl Shift. Org Lett 2013; 15:4146-9. [DOI: 10.1021/ol401818m] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yu Zhu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Wen-Ting Lu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Hong-Chao Sun
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Zhuang-Ping Zhan
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
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