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Salam MA, Imdadulhaq ES, Al-Romaizan AN, Saleh TS, Mostafa MMM. Ultrasound-Assisted 1,3-Dipolar Cycloadditions Reaction Utilizing Ni-Mg-Fe LDH: A Green and Sustainable Perspective. Catalysts 2023. [DOI: 10.3390/catal13040650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Ultrasound-assisted synthesis of novel pyrazoles using Ni-Mg-Fe LDH as a catalyst in cyclopentyl methyl ether (CPME) is introduced. Different LDHs were tested as a catalyst for the synthesis of pyrazoles via a 1,3-dipolar cycloaddition reaction. Among them, Ni-Mg-Fe LDH was the superior catalyst for this reaction. This protocol offered high yields, a short reaction time, and a green solvent, and with the reuse of this catalyst six times with the same activity, it could be regarded as an ecofriendly, greener process. The NiMgFe LDH catalyst with the smallest particle size (29 nm) and largest surface area showed its superior efficacy for the 1,3 dipolar cycloaddition rection and can be successfully used in up to six catalytic cycles with little loss of catalytic activity. A plausible mechanism for this reaction over the Ni-Mg-Fe LDH is proposed.
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Zou X, Zheng L, Zhuo X, Zhong Y, Wu Y, Yang B, He Q, Guo W. Copper-Promoted Aerobic Oxidative [3+2] Cycloaddition Reactions of N,N-Disubstituted Hydrazines with Alkynoates: Access to Substituted Pyrazoles. J Org Chem 2023; 88:2190-2206. [PMID: 36724037 DOI: 10.1021/acs.joc.2c02610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A copper-promoted aerobic oxidative [3+2] cycloaddition reaction for the synthesis of various substituted pyrazoles from N,N-disubstituted hydrazines with alkynoates in the presence of bases is developed. This work involves a direct C(sp3)-H functionalization and the formation of new C-C/C-N bonds. In this strategy, inexpensive and easily available Cu2O serves as the promoter and air acts as the green oxidant. The reaction exhibits the advantages of high atom and step economy, high regioselectivity, and easy operation.
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Affiliation(s)
- Xiaoying Zou
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Lvyin Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xiaoya Zhuo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yumei Zhong
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yingying Wu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Beining Yang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Qifang He
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
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Sun Y, Yang Z, Lu SN, Chen Z, Wu XF. Formal [4+1] Annulation of Azoalkenes with CF 3-Imidoyl Sulfoxonium Ylides and Dual Double Bond Isomerization Cascade: Synthesis of Trifluoromethyl-Containing Pyrazole Derivatives. Org Lett 2022; 24:6822-6827. [PMID: 36082936 DOI: 10.1021/acs.orglett.2c02746] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A straightforward strategy for the metal-free construction of trifluoromethyl-containing pyrazole derivatives has been achieved from readily available α-halo hydrazones and CF3-imidoyl sulfoxonium ylides. The cascade transformation proceeds through the formal [4+1] cycloaddition followed by an unexpected dual double bond isomerization. The protocol features mild conditions, easy operation, excellent substrate compatibility, and good regioselectivity. The synthetic utility is demonstrated by scale-up reaction and further elaboration of the obtained pyrazole products.
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Affiliation(s)
- Yue Sun
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zuguang Yang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Shu-Ning Lu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhengkai Chen
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China.,Leibniz-Institut für Katalyse e. V., Albert-Einstein-Straβe 29a, 18059 Rostock, Germany
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Ebenezer O, Shapi M, Tuszynski JA. A Review of the Recent Development in the Synthesis and Biological Evaluations of Pyrazole Derivatives. Biomedicines 2022; 10:biomedicines10051124. [PMID: 35625859 PMCID: PMC9139179 DOI: 10.3390/biomedicines10051124] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/04/2022] [Accepted: 05/06/2022] [Indexed: 12/12/2022] Open
Abstract
Pyrazoles are five-membered heterocyclic compounds that contain nitrogen. They are an important class of compounds for drug development; thus, they have attracted much attention. In the meantime, pyrazole derivatives have been synthesized as target structures and have demonstrated numerous biological activities such as antituberculosis, antimicrobial, antifungal, and anti-inflammatory. This review summarizes the results of published research on pyrazole derivatives synthesis and biological activities. The published research works on pyrazole derivatives synthesis and biological activities between January 2018 and December 2021 were retrieved from the Scopus database and reviewed accordingly.
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Affiliation(s)
- Oluwakemi Ebenezer
- Department of Chemistry, Faculty of Natural Science, Mangosuthu University of Technology, Durban 4026, South Africa; (O.E.); (M.S.)
- Department of Physics, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Michael Shapi
- Department of Chemistry, Faculty of Natural Science, Mangosuthu University of Technology, Durban 4026, South Africa; (O.E.); (M.S.)
| | - Jack A. Tuszynski
- Department of Physics, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB T6G 1Z2, Canada
- Department of Mechanical and Aerospace Engineering, (DIMEAS), Politecnico di Torino, 10129 Turin, Italy
- Correspondence:
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Odin IS, Chertov AY, Grigor'eva OB, Golovanov AA. Ketone Derivatives of Propargylamines as Synthetic Equivalents of Conjugated 2,4,1-Enynones in the Synthesis of Acetylenic 2-Pyrazolines and Pyrazoles. J Org Chem 2022; 87:5916-5924. [PMID: 35394780 DOI: 10.1021/acs.joc.2c00198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An interaction of 1,5-diaryl-3-X-pent-4-yn-1-ones (where X stands for piperidin-1-yl, morpholin-4-yl, 4-methylpiperazin-1-yl) with arylhydrazines proceeds at room temperature and results in 3-aryl-5-arylethynyl-1-phenyl-4,5-dihydro-1H-pyrazoles with up to 57-73% yields. Under similar conditions, the cyclocondensation of conjugated 2,4,1-enynones with arylhydrazine proceeds only in the presence of cyclic amines. 1,5-Diaryl-3-X-pent-4-yn-1-ones are reported as synthetic equivalents of conjugated 2,4,1-enynones in reactions with arylhydrazines. On the basis of obtained data, there are highly efficient methods developed for the synthesis of 5-arylethynyl-substituted 4,5-dihydro-1H-pyrazoles, as well as for similarly structured 1H-pyrazoles prepared by oxidation in AcOH. Presented products possess quite marked fluorescent abilities. Emission maximum wavelengths are located at 453-465 and 363-400 nm, respectively; certain compounds show extremely large Stokes shifts that may reach 91,000 cm-1.
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Affiliation(s)
- Ivan S Odin
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
| | - Anton Yu Chertov
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
| | - Olga B Grigor'eva
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
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Itakhunov RN, Odin IS, Gusev DM, Grabovskiy SA, Gordon KV, Vologzhanina AV, Sokov SA, Sosnin IM, Golovanov AA. Cyclization of arylhydrazones of cross-conjugated enynones: synthesis of luminescent styryl-1 H-pyrazoles and propenyl-1 H-pyrazoles. Org Biomol Chem 2022; 20:8693-8713. [DOI: 10.1039/d2ob01427k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
On the basis of available ethynyl vinyl ketones and arylhydrazines, the authors have developed the two-stage synthesis method for styrylpyrazoles possessing fluorescent abilities, as well as the gram-scale synthesis method for fluorescent probes.
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Affiliation(s)
- Radik N. Itakhunov
- S. P. Korshunov Research Laboratory No. 13, Department Chemical Technology and Resource Conservation, Togliatti State University, Belorusskaya Str. 14, Togliatti, 445020, Russia
| | - Ivan S. Odin
- S. P. Korshunov Research Laboratory No. 13, Department Chemical Technology and Resource Conservation, Togliatti State University, Belorusskaya Str. 14, Togliatti, 445020, Russia
| | - Dmitry M. Gusev
- S. P. Korshunov Research Laboratory No. 13, Department Chemical Technology and Resource Conservation, Togliatti State University, Belorusskaya Str. 14, Togliatti, 445020, Russia
| | - Stanislav A. Grabovskiy
- S. P. Korshunov Research Laboratory No. 13, Department Chemical Technology and Resource Conservation, Togliatti State University, Belorusskaya Str. 14, Togliatti, 445020, Russia
- Laboratory of Chemical Kinetics, Ufa Institute of Chemistry, UFRS of the Russian Academy of Science, October Av. 71, Ufa, 450054, Russia
| | - Kareem V. Gordon
- S. P. Korshunov Research Laboratory No. 13, Department Chemical Technology and Resource Conservation, Togliatti State University, Belorusskaya Str. 14, Togliatti, 445020, Russia
| | - Anna V. Vologzhanina
- Laboratory for X-Ray Diffraction Studies – X-Ray Structural Centre (XRSC), A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Science, 28 Vavilova Str., Moscow, 119334, Russia
| | - Sergey A. Sokov
- S. P. Korshunov Research Laboratory No. 13, Department Chemical Technology and Resource Conservation, Togliatti State University, Belorusskaya Str. 14, Togliatti, 445020, Russia
| | - Ilya M. Sosnin
- S. P. Korshunov Research Laboratory No. 13, Department Chemical Technology and Resource Conservation, Togliatti State University, Belorusskaya Str. 14, Togliatti, 445020, Russia
| | - Alexander A. Golovanov
- S. P. Korshunov Research Laboratory No. 13, Department Chemical Technology and Resource Conservation, Togliatti State University, Belorusskaya Str. 14, Togliatti, 445020, Russia
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Guo H, Tian L, Liu Y, Wan JP. DMSO as a C 1 Source for [2 + 2 + 1] Pyrazole Ring Construction via Metal-Free Annulation with Enaminones and Hydrazines. Org Lett 2021; 24:228-233. [PMID: 34908420 DOI: 10.1021/acs.orglett.1c03879] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A cascade reaction between enaminones, hydrazines, and dimethyl sulfoxide (DMSO) for the synthesis of 1,4-disubstituted pyrazoles catalyzed by molecular iodine in the presence of Selectfluor has been realized. DMSO plays a dual role as the C1 source and the reaction medium. In addition, the synthesis of 1,3,4-trisubstituted pyrazoles using aldehydes as alternative C1 building blocks has also been achieved.
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Affiliation(s)
- Haijin Guo
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Lihong Tian
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
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Wei L, Ding S, Liu M, Yu Z, Xiao Y. Synthesis of Trifluoromethylated Pyrazolidines, Pyrazolines and Pyrazoles via Divergent Reaction of β-CF 3-1,3-Enynes with Hydrazines. Org Lett 2021; 23:7718-7723. [PMID: 34543037 DOI: 10.1021/acs.orglett.1c02646] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three types of trifluoromethylated pyrazolidines, pyrazolines, and pyrazoles can be synthesized via divergent reaction of β-CF3-1, 3-enyne with hydrazines. The reaction with simple hydrazine monohydrate or sulfonyl hydrazines as nucleophiles produces 1,3,4-trisubstituted pyrazolines, whereas the reaction with acetyl hydrazine as nucleophiles affords 1,4,5-trisubstituted pyrazolidines. Using phenylhydrazine or tert-butylhydrazine as a reaction partner, the products are easily oxidized to form 1,4,5-trisubstituted pyrazoles.
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Affiliation(s)
- Lan Wei
- Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, 500. Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Shiteng Ding
- Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, 500. Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Mingqing Liu
- Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, 500. Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Zongxiang Yu
- Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, 500. Dongchuan Road, Shanghai, 200241, People's Republic of China
| | - Yuanjing Xiao
- Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University, 500. Dongchuan Road, Shanghai, 200241, People's Republic of China
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