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Betcke I, Götzinger AC, Kornet MM, Müller TJJ. Multicomponent syntheses of pyrazoles via (3 + 2)-cyclocondensation and (3 + 2)-cycloaddition key steps. Beilstein J Org Chem 2024; 20:2024-2077. [PMID: 39161713 PMCID: PMC11331544 DOI: 10.3762/bjoc.20.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Accepted: 07/19/2024] [Indexed: 08/21/2024] Open
Abstract
Pyrazoles are rarely found in nature but are traditionally used in the agrochemical and pharmaceutical industries, while other areas of use are also actively developing. However, they have also found numerous other applications. The search for new and efficient syntheses of these heterocycles is therefore highly relevant. The modular concept of multicomponent reactions (MCR) has paved a broad alley to heteroaromatics. The advantages over traditional methods are the broader scope and increased efficiency of these reactions. In particular, traditional multistep syntheses of pyrazoles have considerably been extended by MCR. Progress has been made in the cyclocondensation of 1,3-dielectrophiles that are generated in situ. Limitations in the regioselectivity of cyclocondensation with 1,3-dicarbonyls were overcome by the addition-cyclocondensation of α,β-unsaturated ketones. Embedding 1,3-dipolar cycloadditions into a one-pot process has additionally been developed for concise syntheses of pyrazoles. The MCR strategy also allows for concatenating classical condensation-based methodology with modern cross-coupling and radical chemistry, as well as providing versatile synthetic approaches to pyrazoles. This overview summarizes the most important MCR syntheses of pyrazoles based on ring-forming sequences in a flashlight fashion.
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Affiliation(s)
- Ignaz Betcke
- Heinrich-Heine-Universität Düsseldorf, Math.-Nat. Fakultät, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Alissa C Götzinger
- Heinrich-Heine-Universität Düsseldorf, Math.-Nat. Fakultät, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Maryna M Kornet
- Heinrich-Heine-Universität Düsseldorf, Math.-Nat. Fakultät, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
- Zaporizhzhia National University, Faculty of Biology, Department of Chemistry, Zhukovskogo Street 66, 69600 Zaporizhzhia, Ukraine
| | - Thomas J J Müller
- Heinrich-Heine-Universität Düsseldorf, Math.-Nat. Fakultät, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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2
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Wang Y, Xiong C, Zhong J, Zhou Q. Synthesis of 1,3,5-trisubstituted pyrazole-4-carboxylates through 1,3-dipolar cycloaddition of nitrilimines with allenoates. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Gouda MA, Abu‐Hashem AA, Abdelgawad AAM. Recent progress on the chemistry of thieno[3,2‐
b
]quinoline derivatives (part
III
). J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Moustafa A. Gouda
- Department of Chemistry, Faculty of Science and Arts Taibah University Medina Saudi Arabia
- Department of Chemistry, Faculty of Science Mansoura University Mansoura Egypt
| | - Ameen A. Abu‐Hashem
- Photochemistry Department (Heterocyclic Unit) National Research Centre Giza Egypt
- Chemistry Department, Faculty of Science Jazan University Jazan Saudi Arabia
| | - Ahmed A. M. Abdelgawad
- Chemistry Department, Faculty of Science Jazan University Jazan Saudi Arabia
- Medicinal and Aromatic Plants Department Desert Research Center Cairo Egypt
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4
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Nechaev IV, Cherkaev GV, Boev NV, Solyev PN. Three-Component Reaction of 3,3-Difluorocyclopropenes, s-Tetrazines, and (benzo) Pyridines. J Org Chem 2020; 86:1037-1052. [DOI: 10.1021/acs.joc.0c02292] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Georgij V. Cherkaev
- Enikolopov Institute of Synthetic Polymeric Materials, a Foundation of the Russian Academy of Sciences, 70 Profsoyuznaya St., 117393 Moscow, Russia
| | | | - Pavel N. Solyev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 32 Vavilova St., 119991 Moscow, Russia
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5
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Cheng B, Li Y, Zhang X, Duan S, Li H, He Y, Li Y, Wang T, Zhai H. Two Reaction Modes of Pyridinium 1,4-Zwitterionic Thiolates with Sulfenes: Synthesis of 3H-1,2-Dithiole 2,2-Dioxides, 1,9a-Dihydropyrido[2,1-c][1,4]thiazines, and Indolizines. Org Lett 2020; 22:5817-5821. [DOI: 10.1021/acs.orglett.0c01888] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Bin Cheng
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yuntong Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xinping Zhang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Shengguo Duan
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Hui Li
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yixuan He
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yun Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Taimin Wang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Hongbin Zhai
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory of Chemical Oncogenomics, Shenzhen Engineering Laboratory of Nano Drug Slow-Release, Peking University Shenzhen Graduate School, Shenzhen 518055, China
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6
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Cheng B, Li Y, Li H, Zhang X, Wang T, Li Y, Zhai H. Switchable Ring-Contractive Extrusion Reactions of 2,5-Dihydro-1,4,5-thiadiazepine S-Oxides: Entries to Pyridazines or Pyrazoles. J Org Chem 2019; 85:1109-1114. [DOI: 10.1021/acs.joc.9b03003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Bin Cheng
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yuntong Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Hui Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xinping Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Taimin Wang
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Yun Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Hongbin Zhai
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory of Chemical Oncogenomics, Shenzhen Engineering Laboratory of Nano Drug Slow-Release, Peking University Shenzhen Graduate School, Shenzhen 518055, China
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7
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Karrouchi K, Radi S, Ramli Y, Taoufik J, Mabkhot YN, Al-Aizari FA, Ansar M. Synthesis and Pharmacological Activities of Pyrazole Derivatives: A Review. Molecules 2018; 23:molecules23010134. [PMID: 29329257 PMCID: PMC6017056 DOI: 10.3390/molecules23010134] [Citation(s) in RCA: 448] [Impact Index Per Article: 74.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/03/2018] [Accepted: 01/05/2018] [Indexed: 12/31/2022] Open
Abstract
Pyrazole and its derivatives are considered a pharmacologically important active scaffold that possesses almost all types of pharmacological activities. The presence of this nucleus in pharmacological agents of diverse therapeutic categories such as celecoxib, a potent anti-inflammatory, the antipsychotic CDPPB, the anti-obesity drug rimonabant, difenamizole, an analgesic, betazole, a H2-receptor agonist and the antidepressant agent fezolamide have proved the pharmacological potential of the pyrazole moiety. Owing to this diversity in the biological field, this nucleus has attracted the attention of many researchers to study its skeleton chemically and biologically. This review highlights the different synthesis methods and the pharmacological properties of pyrazole derivatives. Studies on the synthesis and biological activity of pyrazole derivatives developed by many scientists around the globe are reported.
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Affiliation(s)
- Khalid Karrouchi
- Medicinal Chemistry Laboratory, Faculty of Medicine and Pharmacy, Mohammed V University, 10100 Rabat, Morocco.
- LCAE, Department of Chemistry, Faculty of Sciences, University Mohamed I, 60000 Oujda, Morocco.
- Physicochemical service, Drugs Quality Control Laboratory, Division of Drugs and Pharmacy, Ministry of Health, 10100 Rabat, Morocco.
| | - Smaail Radi
- LCAE, Department of Chemistry, Faculty of Sciences, University Mohamed I, 60000 Oujda, Morocco.
| | - Youssef Ramli
- Medicinal Chemistry Laboratory, Faculty of Medicine and Pharmacy, Mohammed V University, 10100 Rabat, Morocco.
| | - Jamal Taoufik
- Medicinal Chemistry Laboratory, Faculty of Medicine and Pharmacy, Mohammed V University, 10100 Rabat, Morocco.
| | - Yahia N Mabkhot
- Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Faiz A Al-Aizari
- Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - M'hammed Ansar
- Medicinal Chemistry Laboratory, Faculty of Medicine and Pharmacy, Mohammed V University, 10100 Rabat, Morocco.
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8
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Karrouchi K, Radi S, Ramli Y, Taoufik J, Mabkhot YN, Al-Aizari FA, Ansar M. Synthesis and Pharmacological Activities of Pyrazole Derivatives: A Review. Molecules 2018. [PMID: 29329257 DOI: 10.3390/molecules23010134k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
Pyrazole and its derivatives are considered a pharmacologically important active scaffold that possesses almost all types of pharmacological activities. The presence of this nucleus in pharmacological agents of diverse therapeutic categories such as celecoxib, a potent anti-inflammatory, the antipsychotic CDPPB, the anti-obesity drug rimonabant, difenamizole, an analgesic, betazole, a H2-receptor agonist and the antidepressant agent fezolamide have proved the pharmacological potential of the pyrazole moiety. Owing to this diversity in the biological field, this nucleus has attracted the attention of many researchers to study its skeleton chemically and biologically. This review highlights the different synthesis methods and the pharmacological properties of pyrazole derivatives. Studies on the synthesis and biological activity of pyrazole derivatives developed by many scientists around the globe are reported.
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Affiliation(s)
- Khalid Karrouchi
- Medicinal Chemistry Laboratory, Faculty of Medicine and Pharmacy, Mohammed V University, 10100 Rabat, Morocco.
- LCAE, Department of Chemistry, Faculty of Sciences, University Mohamed I, 60000 Oujda, Morocco.
- Physicochemical service, Drugs Quality Control Laboratory, Division of Drugs and Pharmacy, Ministry of Health, 10100 Rabat, Morocco.
| | - Smaail Radi
- LCAE, Department of Chemistry, Faculty of Sciences, University Mohamed I, 60000 Oujda, Morocco.
| | - Youssef Ramli
- Medicinal Chemistry Laboratory, Faculty of Medicine and Pharmacy, Mohammed V University, 10100 Rabat, Morocco.
| | - Jamal Taoufik
- Medicinal Chemistry Laboratory, Faculty of Medicine and Pharmacy, Mohammed V University, 10100 Rabat, Morocco.
| | - Yahia N Mabkhot
- Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Faiz A Al-Aizari
- Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - M'hammed Ansar
- Medicinal Chemistry Laboratory, Faculty of Medicine and Pharmacy, Mohammed V University, 10100 Rabat, Morocco.
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9
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Hajipour AR, Karimzadeh M, Tavallaei H. Fast synthesis of pyrano[2,3-c]pyrazoles: strong effect of Brönsted and Lewis acidic ionic liquids. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-014-0561-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Bényei AC, Stirling A, Bostai B, Lőrincz K, Kotschy A. Out of cross-conjugation: the unexpected structure of tetrazinones. RSC Adv 2014. [DOI: 10.1039/c4ra05616g] [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] Open
Abstract
Combined experimental and theoretical investigations helped to elucidate the mechanisms responsible for the unique structural and electronic properties of NHC-substituted tetrazinone compounds.
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Affiliation(s)
- A. C. Bényei
- Laboratory of X-ray Diffraction
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4010 Debrecen, Hungary
| | - A. Stirling
- Institute of Organic Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest, Hungary
| | - B. Bostai
- Institute of Chemistry
- Eötvös Loránd University
- H-1117 Budapest, Hungary
| | - K. Lőrincz
- Institute of Chemistry
- Eötvös Loránd University
- H-1117 Budapest, Hungary
| | - A. Kotschy
- Institute of Chemistry
- Eötvös Loránd University
- H-1117 Budapest, Hungary
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11
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Yan CX, Zhao Y, Wang XR, Cheng Y. The reaction of β-lactam carbenes with 3,6-di(2-pyrimidinyl)tetrazine: regulating products by reaction conditions. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Wang XR, Xing J, Yan CX, Cheng Y. The reaction of β-lactam carbenes with 3,6-dipyridyltetrazines: switch of reaction pathways by 2-pyridyl and 4-pyridyl substituents of tetrazines. Org Biomol Chem 2012; 10:970-7. [PMID: 22134414 DOI: 10.1039/c1ob06595e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of β-lactam carbenes with both 3,6-di(2-pyridyl)tetrazine and 3,6-di(4-pyridyl)tetrazine were studied. It was found that β-lactam carbenes reacted with 3,6-di(2-pyridyl)tetrazine to produce 5-triazolo[1,5-a]pyridylpyrrol-2-ones in good yields, while with 3,6-di(4-pyridyl)tetrazine, they afforded pyrido[c]cyclopenta[b]pyrrol-2-ones in moderate yields. Both reactions were proposed to follow cascade mechanisms containing a 3,6a-dipyridylpyrrolo[3,2-c]pyrazol-5-one intermediate. The different pathways of the transformation of pyrrolo[3,2-c]pyrazol-5-ones were switched by the 2- and 4-pyridyl substituents. This work not only provided a simple and efficient strategy for the construction of novel triazolo[1,5-a]pyridine and pyrido[c]cyclopenta[b]pyrrole derivatives, respectively, but also revealed two different thermal transformation patterns of 3H-pyrazole compounds.
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Affiliation(s)
- Xiao-Rong Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
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13
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Chien CT, Lin CC, Watanabe M, Lin YD, Chao TH, Chiang TC, Huang XH, Wen YS, Tu CH, Sun CH, Chow TJ. Tetracene-based field-effect transistors using solution processes. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31134h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Iaroshenko VO, Maalik A, Ostrovskyi D, Villinger A, Spannenberg A, Langer P. Efficient synthesis of purines by inverse electron-demand Diels–Alder reactions of 1-substituted-1H-imidazol-5-amines with 1,3,5-triazines. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.08.082] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Fustero S, Sánchez-Roselló M, Barrio P, Simón-Fuentes A. From 2000 to mid-2010: a fruitful decade for the synthesis of pyrazoles. Chem Rev 2011; 111:6984-7034. [PMID: 21806021 DOI: 10.1021/cr2000459] [Citation(s) in RCA: 797] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Santos Fustero
- Departamento de Química Orgánica, Universidad de Valencia, Spain.
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16
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Ye L, Haddadin MJ, Lodewyk MW, Ferreira AJ, Fettinger JC, Tantillo DJ, Kurth MJ. Cyclopenta[b]pyrroles from triazines: synthetic and mechanistic studies. Org Lett 2010; 12:164-7. [PMID: 19961148 DOI: 10.1021/ol902559u] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The pyrrolidine-mediated reactions of 3,5-disubstituted 1,2,4-triazines with cyclobutanone lead to cyclopenta[b]pyrroles, which can be derivatized into hydrazones and oximes. The cyclopenta[b]pyrrole ring system likely arises through a tandem [4 + 2] cycloaddition/cycloreversion/ring rearrangement reaction. In contrast, 3,6-disubstituted 1,2,4-triazines undergo a simple nucleophilic 1,4-addition with cyclobutanone to give 1:1 adducts.
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Affiliation(s)
- Long Ye
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA
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17
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Lodewyk MW, Kurth MJ, Tantillo DJ. Mechanisms for Formation of Diazocinones, Pyridazines, and Pyrazolines from Tetrazines—Oxyanion-Accelerated Pericyclic Cascades? J Org Chem 2009; 74:4804-11. [DOI: 10.1021/jo900565y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Michael W. Lodewyk
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
| | - Mark J. Kurth
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
| | - Dean J. Tantillo
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616
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18
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Kumar A, Bokria JG, Buyukmumcu Z, Dey T, Sotzing GA. Poly(thieno[3,4-b]furan), a New Low Band Gap Polymer: Experiment and Theory. Macromolecules 2008. [DOI: 10.1021/ma702773e] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arvind Kumar
- Department of Chemistry and the Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, and Department of Chemistry, Erciyes University, Kayseri, Turkey
| | - Jayesh G. Bokria
- Department of Chemistry and the Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, and Department of Chemistry, Erciyes University, Kayseri, Turkey
| | - Zeki Buyukmumcu
- Department of Chemistry and the Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, and Department of Chemistry, Erciyes University, Kayseri, Turkey
| | - Tanmoy Dey
- Department of Chemistry and the Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, and Department of Chemistry, Erciyes University, Kayseri, Turkey
| | - Gregory A. Sotzing
- Department of Chemistry and the Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, and Department of Chemistry, Erciyes University, Kayseri, Turkey
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19
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Xie H, Zu L, Oueis HR, Li H, Wang J, Wang W. Proline-Catalyzed Direct Inverse Electron Demand Diels–Alder Reactions of Ketones with 1,2,4,5-Tetrazines. Org Lett 2008; 10:1923-6. [DOI: 10.1021/ol800417q] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hexin Xie
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001
| | - Liansuo Zu
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001
| | - Hanine R. Oueis
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001
| | - Hao Li
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001
| | - Jian Wang
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001
| | - Wei Wang
- Department of Chemistry & Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001
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21
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Suen YF, Hope H, Nantz MH, Haddadin MJ, Kurth AMJ. Transannular Anti-Michael Addition: Formation of 4H-Pyrazolo[5,1-c]thiazines. Tetrahedron Lett 2006; 47:7893-7896. [PMID: 21904417 DOI: 10.1016/j.tetlet.2006.09.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The reaction of 2-(diphenylmethylene)thietan-3-one (2) with 1,2,4,5-tetrazines (3a-c) in KOH/MeOH/THF gives 4H-pyrazolo[5,1-c]thiazines (7a-c). This no vel condensation reaction proceeds via the intermediacy of an 8-(diphenylmethylene)-2H-1,4,5-thiadiazocin-7(8H)-one (5), which undergoes a multi-step rearrangement including a rare anti-Michael addition.
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Affiliation(s)
- Yat Fan Suen
- Department of Chemistry, University of California, Davis, CA 95616, USA
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