1
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Pünner F, Sohtome Y, Lyu Y, Hashizume D, Akakabe M, Yoshimura M, Yashiroda Y, Yoshida M, Sodeoka M. Catalytic Aerobic Carbooxygenation for the Construction of Vicinal Tetrasubstituted Centers: Application to the Synthesis of Hexasubstituted γ-Lactones. Angew Chem Int Ed Engl 2024; 63:e202405876. [PMID: 39031750 DOI: 10.1002/anie.202405876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/30/2024] [Accepted: 06/19/2024] [Indexed: 07/22/2024]
Abstract
Strategic design for the construction of contiguous tetrasubstituted carbon centers represents a daunting challenge in synthetic organic chemistry. Herein, we report a combined experimental and computational investigation aimed at developing catalytic aerobic carbooxygenation, involving the intramolecular addition of tertiary radicals to geminally disubstituted alkenes, followed by aerobic oxygenation. This reaction provides a straightforward route to various α,α,β,β-tetrasubstituted γ-lactones, which can be readily transformed into hexasubstituted γ-lactones through allylation/translactonization. Computational analysis reveals that the key mechanistic foundation for achieving the developed aerobic carbooxygenation involves the design of endothermic (energetically uphill) C-C bond formation followed by exothermic (energetically downhill) oxygenation. Furthermore, we highlight a unique fluorine-induced stereoelectronic effect that stabilizes the endothermic stereodetermining transition state.
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Affiliation(s)
- Florian Pünner
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
| | - Yoshihiro Sohtome
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
- Organic & Biomolecular Chemistry Laboratory Department of Applied Chemistry College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Shiga, Japan
| | - Yanzong Lyu
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
| | - Daisuke Hashizume
- Materials Characterization Support Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
| | - Mai Akakabe
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
| | - Mami Yoshimura
- Molecular Ligand Target Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
| | - Yoko Yashiroda
- Molecular Ligand Target Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
| | - Minoru Yoshida
- Chemical Genomics Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
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2
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Budnikov AS, Krylov IB, Shevchenko MI, Segida OO, Lastovko AV, Alekseenko AL, Ilovaisky AI, Nikishin GI, Terent’ev AO. C-O Coupling of Hydrazones with Diacetyliminoxyl Radical Leading to Azo Oxime Ethers-Novel Antifungal Agents. Molecules 2023; 28:7863. [PMID: 38067592 PMCID: PMC10707749 DOI: 10.3390/molecules28237863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/25/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Selective oxidative C-O coupling of hydrazones with diacetyliminoxyl is demonstrated, in which diacetyliminoxyl plays a dual role. It is an oxidant (hydrogen atom acceptor) and an O-partner for the oxidative coupling. The reaction is completed within 15-30 min at room temperature, is compatible with a broad scope of hydrazones, provides high yields in most cases, and requires no additives, which makes it robust and practical. The proposed reaction leads to the novel structural family of azo compounds, azo oxime ethers, which were discovered to be highly potent fungicides against a broad spectrum of phytopathogenic fungi (Venturia inaequalis, Rhizoctonia solani, Fusarium oxysporum, Fusarium moniliforme, Bipolaris sorokiniana, Sclerotinia sclerotiorum).
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Affiliation(s)
- Alexander S. Budnikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
- All-Russian Research Institute for Phytopathology, B. Vyazyomy, 143050 Moscow, Russia
| | - Igor B. Krylov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
- All-Russian Research Institute for Phytopathology, B. Vyazyomy, 143050 Moscow, Russia
- Higher Chemical College of the Russian Academy of Sciences, D. I. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Square, 125047 Moscow, Russia
| | - Mikhail I. Shevchenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
- Higher Chemical College of the Russian Academy of Sciences, D. I. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Square, 125047 Moscow, Russia
| | - Oleg O. Segida
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
- All-Russian Research Institute for Phytopathology, B. Vyazyomy, 143050 Moscow, Russia
| | - Andrey V. Lastovko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
| | - Anna L. Alekseenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
- Higher Chemical College of the Russian Academy of Sciences, D. I. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Square, 125047 Moscow, Russia
| | - Alexey I. Ilovaisky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
- All-Russian Research Institute for Phytopathology, B. Vyazyomy, 143050 Moscow, Russia
| | - Gennady I. Nikishin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
| | - Alexander O. Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia; (A.S.B.); (M.I.S.); (O.O.S.); (A.I.I.)
- All-Russian Research Institute for Phytopathology, B. Vyazyomy, 143050 Moscow, Russia
- Higher Chemical College of the Russian Academy of Sciences, D. I. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Square, 125047 Moscow, Russia
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3
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Liu Q, Jiang J, Ye X, Sun J, Wu Y, Shao Y, Deng C, Zhang F. Iodine-Mediated Oxidative Annulation of β,γ-Unsaturated Hydrazones in Dimethyl Sulfoxide: A Strategy to Build 1,6-Dihydropyridazines and Pyrroles. J Org Chem 2023. [PMID: 37449736 DOI: 10.1021/acs.joc.3c00669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Simple, commercially available iodine was successfully employed as a highly efficient and chemoselective catalyst for the oxidative annulation of β,γ-unsaturated hydrazones to produce 1,6-dihydropyridazines under mild conditions for the first time. Interestingly, when active β,γ-unsaturated hydrazone compounds containing electron-donating groups, such as furyl, thienyl, and cycloalkyl, were used, pyrroles were obtained. A gram-scale preparation experiment and further derivatization of pyridazines demonstrated the potential applicability of our synthesis method. Experimental studies and density functional theory calculations unveiled the origin of the chemoselectivity determining the formation of different products.
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Affiliation(s)
- Qianrui Liu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jiaming Jiang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xuanzeng Ye
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jiawen Sun
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yao Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yinlin Shao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Fangjun Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
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4
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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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5
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Sugawara M, Sawamura M, Akakabe M, Ramadoss B, Sohtome Y, Sodeoka M. Pd-catalyzed Aerobic Cross-Dehydrogenative Coupling of Catechols with 2-Oxindoles and Benzofuranones: Reactivity Difference Between Monomer and Dimer. Chem Asian J 2022; 17:e202200807. [PMID: 36062560 PMCID: PMC9825984 DOI: 10.1002/asia.202200807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/05/2022] [Indexed: 01/11/2023]
Abstract
Persistent radicals, which are generated from 2-oxindole or benzofuranone dimers, are useful tools for designing the radical-based cross-coupling reaction to provide molecules containing a quaternary carbon. The persistent radical is accessible from both the dimer and monomer; however, the reactivity difference between these substrates for the oxidative cross-coupling reaction is not fully understood, most likely because of the mechanistic complexity. Here, we present details of an aerobic cross-dehydrogenative coupling (CDC) reaction using various monomers and catechols. UV-Vis analysis and mechanistic control experiments showed that the monomer is less reactive than the dimer under aerobic conditions. Our Pd(II)-BINAP-μ-hydroxo complex significantly improved the reactivity of the monomers for the aerobic CDC reaction with catechols, yielding results comparable to those of the corresponding dimer. The procedure, which enables the generation of the persistent radical in situ, is particularly useful when employing the monomer that is not readily converted to the corresponding dimer.
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Affiliation(s)
- Masumi Sugawara
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research2-1 HirosawaWakoSaitamaJapan
| | - Miki Sawamura
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research2-1 HirosawaWakoSaitamaJapan,Tokyo Medical and Dental UniversityTokyo113-8510Japan
| | - Mai Akakabe
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research2-1 HirosawaWakoSaitamaJapan,Catalysis and Integrated Research Group RIKEN Center for Sustainable Resource Science
| | - Boobalan Ramadoss
- Catalysis and Integrated Research Group RIKEN Center for Sustainable Resource Science
| | - Yoshihiro Sohtome
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research2-1 HirosawaWakoSaitamaJapan,Catalysis and Integrated Research Group RIKEN Center for Sustainable Resource Science
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research2-1 HirosawaWakoSaitamaJapan,Catalysis and Integrated Research Group RIKEN Center for Sustainable Resource Science,Tokyo Medical and Dental UniversityTokyo113-8510Japan
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6
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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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7
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Chen X, Shen YT, Zhao ZW, Hou YJ, Sun BX, Fan TG, Li YM. Oxy‐/Amino‐Difluoromethylthiolation of Alkenes: Synthesis of HCF2S‐Containing Isoxazolines and Pyrazolines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200672] [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)
- Xin Chen
- Kunming University of Science and Technology CHINA
| | - Yun-Tao Shen
- Kunming University of Science and Technology CHINA
| | - Zhi-Wei Zhao
- Kunming University of Science and Technology CHINA
| | - Yu-Jian Hou
- Kunming University of Science and Technology CHINA
| | - Bo-Xun Sun
- Kunming University of Science and Technology CHINA
| | - Tai-Gang Fan
- Kunming University of Science and Technology CHINA
| | - Ya-Min Li
- Kunming University of Science and Technology CHINA
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8
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Motiwala HF, Armaly AM, Cacioppo JG, Coombs TC, Koehn KRK, Norwood VM, Aubé J. HFIP in Organic Synthesis. Chem Rev 2022; 122:12544-12747. [PMID: 35848353 DOI: 10.1021/acs.chemrev.1c00749] [Citation(s) in RCA: 124] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) is a polar, strongly hydrogen bond-donating solvent that has found numerous uses in organic synthesis due to its ability to stabilize ionic species, transfer protons, and engage in a range of other intermolecular interactions. The use of this solvent has exponentially increased in the past decade and has become a solvent of choice in some areas, such as C-H functionalization chemistry. In this review, following a brief history of HFIP in organic synthesis and an overview of its physical properties, literature examples of organic reactions using HFIP as a solvent or an additive are presented, emphasizing the effect of solvent of each reaction.
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Affiliation(s)
- Hashim F Motiwala
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Ahlam M Armaly
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Jackson G Cacioppo
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Thomas C Coombs
- Department of Chemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403 United States
| | - Kimberly R K Koehn
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Verrill M Norwood
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Jeffrey Aubé
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
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9
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He J, Liu Y, Feng Y, Li X, Liu P, Dai B. Cs 2CO 3-Promoted [3 + 2] Cyclization of Chalcone and N-Tosylhydrazone. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2078845] [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]
Affiliation(s)
- Jing He
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Yali Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Yijiao Feng
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Xuezhen Li
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Ping Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Bin Dai
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
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10
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Kumar P, Sood S, Kumar A, Verma A, Kumar L, Kumar S, Kumar V, Kumar A, Singh K. 1,3,4-Trisubstituted Pyrazoles: Synthesis, Antimicrobial Evaluation, and Time Resolved Studies. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2058968] [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]
Affiliation(s)
- Parmod Kumar
- Department of Chemistry, School of Basic and Applied Sciences, Lingaya's Vidyapeeth, Faridabad, Haryana, India
| | - Sumit Sood
- Department of Chemistry, Akal College of Basic Sciences, Eternal University, Baru Sahib, District Sirmaur, Himachal Pradesh, India
| | - Anil Kumar
- Department of Chemistry, Akal College of Basic Sciences, Eternal University, Baru Sahib, District Sirmaur, Himachal Pradesh, India
| | - Anurakshee Verma
- Department of Chemistry, School of Basic and Applied Sciences, Lingaya's Vidyapeeth, Faridabad, Haryana, India
| | - Lalit Kumar
- Department of Environmental Science, Indira Gandhi University, Rewari, Haryana, India
| | - Sunil Kumar
- Department of Physics, Indira Gandhi University, Rewari, Haryana, India
| | - Vijay Kumar
- Department of Physics, Indira Gandhi University, Rewari, Haryana, India
| | - Anil Kumar
- Department of Chemistry, Arya PG College Panipat, Haryana, India
| | - Karan Singh
- Department of Chemistry, Indira Gandhi University, Rewari, Haryana, India
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11
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Kwon K, Simons RT, Nandakumar M, Roizen JL. Strategies to Generate Nitrogen-centered Radicals That May Rely on Photoredox Catalysis: Development in Reaction Methodology and Applications in Organic Synthesis. Chem Rev 2022; 122:2353-2428. [PMID: 34623809 PMCID: PMC8792374 DOI: 10.1021/acs.chemrev.1c00444] [Citation(s) in RCA: 116] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
For more than 70 years, nitrogen-centered radicals have been recognized as potent synthetic intermediates. This review is a survey designed for use by chemists engaged in target-oriented synthesis. This review summarizes the recent paradigm shift in access to and application of N-centered radicals enabled by visible-light photocatalysis. This shift broadens and streamlines approaches to many small molecules because visible-light photocatalysis conditions are mild. Explicit attention is paid to innovative advances in N-X bonds as radical precursors, where X = Cl, N, S, O, and H. For clarity, key mechanistic data is noted, where available. Synthetic applications and limitations are summarized to illuminate the tremendous utility of photocatalytically generated nitrogen-centered radicals.
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Affiliation(s)
- Kitae Kwon
- Duke University, Department of Chemistry, Box 90346, Durham, North Carolina 27708-0354, United States
| | - R Thomas Simons
- Duke University, Department of Chemistry, Box 90346, Durham, North Carolina 27708-0354, United States
| | - Meganathan Nandakumar
- Duke University, Department of Chemistry, Box 90346, Durham, North Carolina 27708-0354, United States
| | - Jennifer L Roizen
- Duke University, Department of Chemistry, Box 90346, Durham, North Carolina 27708-0354, United States
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12
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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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13
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Affiliation(s)
- Ya‐Feng Si
- School of Biology Zhengzhou University Zhengzhou 450001 People's Republic of China
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Qi‐Yan Lv
- School of Biology Zhengzhou University Zhengzhou 450001 People's Republic of China
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
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14
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Cascade reaction to 1H-pyrazoles from hydrazones via sodium Ni-trite promoted dual C–C/C–N formation, annulation and aromatization with 1,2-dichloroethane. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.02.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Cheng D, Shen Y, Wu Z, Xu X, Yan J. Metal-Free Tandem Oxidative Cyclization for the Synthesis of 1,2-Dihydropyridazines and Pyrazoles. J Org Chem 2021; 86:8563-8575. [PMID: 34133155 DOI: 10.1021/acs.joc.1c00020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mediated by 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), a novel oxidative coupling of hydrazones and 1,3-diarylpropenes has been disclosed to generate appealing β,γ-unsaturated hydrazones, which further undergo 5-exo-trig or 6-endo-trig cascade cyclization to give the respective 1,2-dihydropyridazines or pyrazoles selectively under metal-free conditions. The mechanisms of the coupling and subsequent cyclization are proposed.
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Affiliation(s)
- Dongping Cheng
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Yinqiang Shen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Ziliang Wu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiaoliang Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Jizhong Yan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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16
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Kumar P, Keshri SK, Kapur M. Ru(II)-Catalyzed, Cu(II)-mediated carbene migratory insertion in the synthesis of trisubstituted pyrroles from isoxazoles. Org Biomol Chem 2021; 19:3428-3433. [PMID: 33899880 DOI: 10.1039/d1ob00255d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A convenient, "one-pot" synthesis of trisubstituted pyrroles via a Ru(ii)-catalyzed, Cu(ii)-mediated reaction of substituted isoxazoles with sulfonylhydrazones has been developed. A series of highly functionalized pyrroles are obtained via a synergistic formation of new C-C and C-N bonds. Mechanistic investigations were carried out to propose the plausible pathway. This protocol provides a facile and expeditious approach for the synthesis of various heterocyclic compounds bearing the pyrrole skeleton.
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Affiliation(s)
- Pravin Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal Bypass road, Bhopal 462066, MP, India.
| | - Santosh Kumar Keshri
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal Bypass road, Bhopal 462066, MP, India.
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal Bypass road, Bhopal 462066, MP, India.
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17
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He H, Xu N, Zhang H, Chen B, Hu Z, Guo K, Chun J, Cao S, Zhu Y. Brønsted acid-promoted hydroamination of unsaturated hydrazones: access to biologically important 5-arylpyrazolines. RSC Adv 2021; 11:17340-17345. [PMID: 35479684 PMCID: PMC9033072 DOI: 10.1039/d1ra03043d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 04/29/2021] [Indexed: 12/25/2022] Open
Abstract
A novel and efficient Brønsted acid-promoted hydroamination of hydrazone-tethered olefins has been developed. A variety of pyrazolines have been easily obtained in good to excellent yields with high chemo- and regioselectivity under simple and mild conditions. This method represents a straightforward, facile, and practical approach toward biologically important 5-arylpyrazolines, which are difficult to access by previously reported radical hydroamination of β,γ-unsaturated hydrazones. An efficient, chemo- and regioselective Brønsted acid-promoted hydroamination reaction of hydrazone-tethered olefins towards 5-arylpyrazolines was developed.![]()
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Affiliation(s)
- Han He
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Ning Xu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Bin Chen
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Zhengnan Hu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Kang Guo
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Jianlin Chun
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
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18
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Lin Y, Hou X, Li B, Du D. Organocatalytic Remote Asymmetric Inverse‐Electron‐Demand Oxa‐Diels‐Alder Reaction of Allyl Ketones with Isatin‐Derived Unsaturated Keto Esters. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001242] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ye Lin
- School of Chemistry and Chemical Engineering Beijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
| | - Xi‐Qiang Hou
- School of Chemistry and Chemical Engineering Beijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
| | - Bing‐Yu Li
- School of Chemistry and Chemical Engineering Beijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
| | - Da‐Ming Du
- School of Chemistry and Chemical Engineering Beijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
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19
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Sugawara M, Ohnishi R, Ezawa T, Akakabe M, Sawamura M, Hojo D, Hashizume D, Sohtome Y, Sodeoka M. Regiodivergent Oxidative Cross-Coupling of Catechols with Persistent tert-Carbon Radicals. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03986] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Masumi Sugawara
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Rikako Ohnishi
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Tetsuya Ezawa
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mai Akakabe
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Miki Sawamura
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daiki Hojo
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yoshihiro Sohtome
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan
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20
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Fan Z, Feng J, Hou Y, Rao M, Cheng J. Copper-Catalyzed Aerobic Cyclization of β,γ-Unsaturated Hydrazones with Concomitant C═C Bond Cleavage. Org Lett 2020; 22:7981-7985. [PMID: 33021381 DOI: 10.1021/acs.orglett.0c02911] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A Cu-catalyzed aerobic oxidative cyclization of β,γ-unsaturated hydrazones for the preparation of pyrazole derivatives has been developed. The hydrazonyl radical promoted the cyclization, along with a concomitant C═C bond cleavage of β,γ-unsaturated hydrazones. This process has been verified via several control experiments, including a radical-trapping study, an 18O-labeling method, and the identification of the possible byproducts. The advantages of this reaction include operational simplicity, a broad reaction scope, and a mild selective reaction process.
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Affiliation(s)
- Zhenwei Fan
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Jiahao Feng
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Yuchen Hou
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Min Rao
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Jiajia Cheng
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
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21
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Fang Z, Qi L, Song J, Ren P, Hou C, Ji S, Wang L, Li W. PhI(OAc)
2
‐Promoted 1,2‐Diaza‐Cope Rearrangement of β,γ‐Unsaturated Hydrazones with Acetate/H
2
O: Access to Diacyl/Acyl
N
‐Allylhydrazines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhuo‐Yue Fang
- College of Chemistry & Environmental Science Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
| | - Lin Qi
- College of Chemistry & Environmental Science Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
| | - Jin‐Yan Song
- College of Chemistry & Environmental Science Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
| | - Pei‐Xing Ren
- College of Chemistry & Environmental Science Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
| | - Cong‐Ying Hou
- College of Chemistry & Environmental Science Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
| | - Shi‐Chao Ji
- College of Chemistry & Environmental Science Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
| | - Li‐Jing Wang
- College of Chemistry & Environmental Science Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
- Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education Key Laboratory of Chemical Biology of Hebei Province Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
| | - Wei Li
- College of Chemistry & Environmental Science Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
- Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education Key Laboratory of Chemical Biology of Hebei Province Hebei University 180 Wusi Donglu 071002 Baoding P. R. China
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22
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Ohnishi R, Sugawara M, Ezawa T, Sohtome Y, Sodeoka M. Formal Aerobic Oxidative Cross-Coupling of Benzofuranones with Azo Compounds Using Pd-μ-hydroxo Complex. Chem Pharm Bull (Tokyo) 2020; 68:895-898. [PMID: 32879230 DOI: 10.1248/cpb.c20-00359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have developed a catalytic aerobic oxidative dimerization reaction of benzofuranones using a Pd(II)-µ-hydroxo complex. Radical-radical cross-coupling of the resulting dimers with azo compounds enabled the one-pot synthesis of structurally congested benzofuranones having two distinct vicinal all-carbon quaternary centers.
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Affiliation(s)
- Rikako Ohnishi
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research.,Graduate School of Science and Engineering, Saitama University
| | - Masumi Sugawara
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research
| | - Tetsuya Ezawa
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science
| | - Yoshihiro Sohtome
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research.,Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research.,Graduate School of Science and Engineering, Saitama University.,Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science
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23
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Xiao H, Meng W, Xu XH, Huang Y. Trifluoromethylthiolation and trifluoromethanesulfonylation of β,γ-unsaturated hydrazones. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Tian L, Wan J, Sheng S. Transition Metal‐free C−H Sulfonylation and Pyrazole Annulation Cascade for the Synthesis of 4‐Sulfonyl Pyrazoles. ChemCatChem 2020. [DOI: 10.1002/cctc.202000244] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lihong Tian
- 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
| | - Shouri Sheng
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 P. R. China
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25
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Meng F, Fang Q, Yuan W, Xu N, Cao S, Chun J, Li J, Zhang H, Zhu Y. Access to cyano-substituted pyrazolines through copper-catalyzed cascade cyanation/cyclization of unactivated olefins. Org Chem Front 2020. [DOI: 10.1039/d0qo00282h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A mild copper-catalyzed cascade cyanation/cyclization of hydrazone-tethered unactivated olefins was developed for the efficient and practical synthesis of cyano-containing pyrazolines.
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Affiliation(s)
- Fei Meng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Qin Fang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Weidong Yuan
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Ning Xu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Jianlin Chun
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Jie Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
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26
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Meng F, Zhang H, He H, Xu N, Fang Q, Guo K, Cao S, Shi Y, Zhu Y. Copper‐Catalyzed Domino Cyclization/Thiocyanation of Unactivated Olefins: Access to SCN‐Containing Pyrazolines. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901104] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fei Meng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Han He
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Ning Xu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Qin Fang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Kang Guo
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yun Shi
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
- College of Plant ProtectionNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
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27
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Chen S, Chen W, Chen X, Chen G, Ackermann L, Tian X. Copper(I)-Catalyzed Oxyamination of β,γ-Unsaturated Hydrazones: Synthesis of Dihydropyrazoles. Org Lett 2019; 21:7787-7790. [DOI: 10.1021/acs.orglett.9b02733] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shanshan Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Wenming Chen
- Department of Pharmaceutical Production Center, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 410007, China
| | - Xu Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Guifang Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Xu Tian
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
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28
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Liu X, Zhou Y, Song Q. Metal-free cyclization of unsaturated hydrazones for the divergent assembly of pyrazolones and pyrazolines. Chem Commun (Camb) 2019; 55:8943-8946. [DOI: 10.1039/c9cc04039k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An oxidative cyclization of β,γ-unsaturated hydrazones for the divergent assembly of pyrazolones and pyrazolines under metal-free conditions is presented.
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Affiliation(s)
- Xiaobing Liu
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Yao Zhou
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
- Key Laboratory for Organic Synthesis and Function Discovery
- Fuzhou Province University
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29
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Duan L, Zhou H, Gu Y, Gong P, Qin M. The use of enaminones and enamines as effective synthons for MSA-catalyzed regioselective synthesis of 1,3,4-tri- and 1,3,4,5-tetrasubstituted pyrazoles. NEW J CHEM 2019. [DOI: 10.1039/c9nj03701b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In the present work, an efficient regioselective synthesis of 1,3,4-tri- and 1,3,4,5-tetrasubstituted pyrazoles via a methanesulfonic acid (MSA)-catalyzed reaction of hydrazones with enaminones or enamines is reported.
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Affiliation(s)
- Liancheng Duan
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- People's Republic of China
- Syngenta Jealott's Hill International Research Center
| | - Hui Zhou
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- People's Republic of China
- Syngenta Jealott's Hill International Research Center
| | - Yucheng Gu
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- People's Republic of China
- Syngenta Jealott's Hill International Research Center
| | - Ping Gong
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- People's Republic of China
- Syngenta Jealott's Hill International Research Center
| | - Mingze Qin
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- People's Republic of China
- Syngenta Jealott's Hill International Research Center
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30
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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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31
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Chen M, Qi L, Chen JM, Ren PX, Du J, Wang LJ, Li W. Synthesis of acyloxyl pyrazolines by copper-mediated aminoacyloxylation of unsaturated ketohydrazones. Org Biomol Chem 2018; 16:5136-5143. [PMID: 29961788 DOI: 10.1039/c8ob01114a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An efficient and step-economical copper-mediated intra-/intermolecular aminoacyloxylation of β,γ-unsaturated hydrazones has been developed. Copper carboxylates serve as both reaction promoters and carboxylate sources in these easily conducted reactions. This method provides straightforward access to diversely useful acyloxyl pyrazolines, which are hard to access traditionally, in good to excellent yields.
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Affiliation(s)
- Manman Chen
- College of Chemistry & Environmental Science, Hebei University, 180 Wusi Donglu, Baoding 071002, P. R. China.
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32
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Wang LJ, Ren PX, Qi L, Chen M, Lu YL, Zhao JY, Liu R, Chen JM, Li W. Copper-Mediated Aminoazidation, Aminohalogenation, and Aminothiocyanation of β,γ-Unsaturated Hydrazones: Synthesis of Versatile Functionalized Pyrazolines. Org Lett 2018; 20:4411-4415. [PMID: 30011212 DOI: 10.1021/acs.orglett.8b01620] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A versatile method for the rapid synthesis of diverse functionalized pyrazolines has been developed based on copper-mediated aminofunctionalization of β,γ-unsaturated hydrazones. The scope of this strategy encompasses a range of difunctionalization reactions: aminoazidation, aminohalogenation, and aminothiocyanation. These reactions provide straightforward access to a series of useful pyrazoline building blocks containing various functional groups that are hard to access traditionally.
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Affiliation(s)
- Li-Jing Wang
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China.,Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
| | - Pei-Xing Ren
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
| | - Lin Qi
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
| | - Manman Chen
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
| | - Yan-Lei Lu
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
| | - Jing-Ye Zhao
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
| | - Rui Liu
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
| | - Jia-Min Chen
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
| | - Wei Li
- College of Chemistry & Environmental Science , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China.,Key Laboratory of Medicinal Chemistry, and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province , Hebei University , 180 Wusi Donglu , Baoding 071002 , People's Republic of China
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33
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Guo YQ, Zhao MN, Ren ZH, Guan ZH. Copper-Promoted 6- endo-trig Cyclization of β,γ-Unsaturated Hydrazones for the Synthesis of 1,6-Dihydropyridazines. Org Lett 2018; 20:3337-3340. [PMID: 29790767 DOI: 10.1021/acs.orglett.8b01240] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel and efficient strategy for the synthesis of 1,6-dihydropyridazines via copper-promoted 6- endo-trig cyclization of readily available β,γ-unsaturated hydrazones have been developed. A series of 1,6-dihydropyridazines have been synthesized by this method with good yields, high functional group tolerance, and remarkable regioselectivity under mild conditions. Importantly, the 1,6-dihydropyridazines can be efficiently converted to biologically important pyridazines in the presence of NaOH.
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Affiliation(s)
- Yong-Qiang Guo
- Key Laboratory of Synthetic and Nature Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P. R. China
| | - Mi-Na Zhao
- Key Laboratory of Synthetic and Nature Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P. R. China
| | - Zhi-Hui Ren
- Key Laboratory of Synthetic and Nature Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P. R. China
| | - Zheng-Hui Guan
- Key Laboratory of Synthetic and Nature Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science , Northwest University , Xi'an 710127 , P. R. China
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34
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Wang F, Xu P, Wang SY, Ji SJ. Cu(II)/Ag(I)-Catalyzed Cascade Reaction of Sulfonylhydrazone with Anthranils: Synthesis of 2-Aryl-3-sulfonyl Substituted Quinoline Derivatives. Org Lett 2018; 20:2204-2207. [DOI: 10.1021/acs.orglett.8b00525] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Pei Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
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35
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Sadhukhan S, Baire B. An Unprecedented (Semi)Favorskii Rearrangement. Evidence for the 2-(Acyloxy)cyclopropanones. Org Lett 2018; 20:1748-1751. [DOI: 10.1021/acs.orglett.8b00218] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Santu Sadhukhan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamilnadu 600036, India
| | - Beeraiah Baire
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamilnadu 600036, India
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36
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Koley S, Panja SK, Soni S, Singh MS. Catalyst-Free One-Pot Access to Pyrazoles and Disulfide-Tethered Pyrazoles via Deamidative Heteroannulation of β-Ketodithioesters with Semicarbazide Hydrochloride in Water. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701595] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Suvajit Koley
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi 221005 India
| | - Sumit Kumar Panja
- Inorganic and Physical Chemistry Department; Indian Institute of Science; Bengaluru 560012 India
| | - Sonam Soni
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi 221005 India
| | - Maya Shankar Singh
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi 221005 India
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37
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Zhao J, Jiang M, Liu JT. Transition metal-free aminofluorination of β,γ-unsaturated hydrazones: base-controlled regioselective synthesis of fluorinated dihydropyrazole and tetrahydropyridazine derivatives. Org Chem Front 2018. [DOI: 10.1039/c7qo01105a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Various base-controlled regioselective reactions of β,γ-unsaturated hydrazones with Selectfluor were achieved under transition metal-free conditions.
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Affiliation(s)
- Juan Zhao
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai 200032
| | - Min Jiang
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai 200032
| | - Jin-Tao Liu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Shanghai 200032
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38
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Yu JM, Cai C. Iodine(iii)-mediated intramolecular sulfeno- and selenofunctionalization of β,γ-unsaturated tosyl hydrazones and oximes. Org Biomol Chem 2018; 16:490-498. [DOI: 10.1039/c7ob02892j] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A cascade radical cyclization/sulfenylation or selenylation of β,γ-unsaturated hydrazones and oximes was realized under mild conditions with phenyliodine(iii) diacetate (PIDA) as the sole oxidant, leading to the construction of diversely functionalized heteroatom-containing pyrazoline and isoxazoline derivatives.
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Affiliation(s)
- Jing-Miao Yu
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing
- People's Republic of China
| | - Chun Cai
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing
- People's Republic of China
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39
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Tarai A, Baruah JB. Four-coordinated see-sawN-(aryl)-2-(propan-2-ylidene)hydrazinecarbothioamide complexes of nickel(ii), copper(ii) and zinc(ii) and their propensity for catalytic cyclisation. Dalton Trans 2018; 47:4921-4930. [DOI: 10.1039/c8dt00453f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four-coordinated metal complexes of two hydrazinecarbothioamide-derived ligands with divalent nickel, copper and zinc are described and the selective reactivity difference of copper(ii) to cyclise the ligand or to form a complex is described.
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Affiliation(s)
- Arup Tarai
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati -781 039
- India
| | - Jubaraj B. Baruah
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati -781 039
- India
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40
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Tang L, Ma M, Zhang Q, Luo H, Wang T, Chai Y. Metal-Free Synthesis of Pyrazoles from 1,3-Diarylpropenes and Hydrazines via
Multiple Inter-/Intramolecular C-H Aminations. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700196] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Li Tang
- School of Chemistry and Chemical Engineering; Shaanxi Normal University, Xi'an; Shaanxi 710119 People's Republic of China
| | - Minyan Ma
- School of Chemistry and Chemical Engineering; Shaanxi Normal University, Xi'an; Shaanxi 710119 People's Republic of China
| | - Qi Zhang
- School of Chemistry and Chemical Engineering; Shaanxi Normal University, Xi'an; Shaanxi 710119 People's Republic of China
| | - Huan Luo
- School of Chemistry and Chemical Engineering; Shaanxi Normal University, Xi'an; Shaanxi 710119 People's Republic of China
| | - Tao Wang
- School of Chemistry and Chemical Engineering; Shaanxi Normal University, Xi'an; Shaanxi 710119 People's Republic of China
| | - Yonghai Chai
- Key Laboratory of Applied Surface and Colloid Chemistry; MOE; Shaanxi Normal University, Xi'an; Shaanxi 710119 People's Republic of China
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41
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Tian M, Shi X, Zhang X, Fan X. Synthesis of 4-Acylpyrazoles from Saturated Ketones and Hydrazones Featured with Multiple C(sp3)–H Bond Functionalization and C–C Bond Cleavage and Reorganization. J Org Chem 2017. [DOI: 10.1021/acs.joc.7b01013] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Miaomiao Tian
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic
Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xiaonan Shi
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic
Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic
Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic
Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
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42
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Zhao QQ, Chen J, Yan DM, Chen JR, Xiao WJ. Photocatalytic Hydrazonyl Radical-Mediated Radical Cyclization/Allylation Cascade: Synthesis of Dihydropyrazoles and Tetrahydropyridazines. Org Lett 2017. [DOI: 10.1021/acs.orglett.7b01609] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Quan-Qing Zhao
- CCNU-uOttawa
Joint Research Centre, Key Laboratory of Pesticides and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Jun Chen
- CCNU-uOttawa
Joint Research Centre, Key Laboratory of Pesticides and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Dong-Mei Yan
- CCNU-uOttawa
Joint Research Centre, Key Laboratory of Pesticides and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Jia-Rong Chen
- CCNU-uOttawa
Joint Research Centre, Key Laboratory of Pesticides and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
| | - Wen-Jing Xiao
- CCNU-uOttawa
Joint Research Centre, Key Laboratory of Pesticides and Chemical Biology,
Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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43
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Zhang BH, Lei LS, Liu SZ, Mou XQ, Liu WT, Wang SH, Wang J, Bao W, Zhang K. Zinc-promoted cyclization of tosylhydrazones and 2-(dimethylamino)malononitrile: an efficient strategy for the synthesis of substituted 1-tosyl-1H-pyrazoles. Chem Commun (Camb) 2017; 53:8545-8548. [DOI: 10.1039/c7cc04610c] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient strategy for the synthesis of substituted 1-tosyl-1H-pyrazoles has been developed through a cyclization reaction of tosylhydrazones with 2-(dimethylamino)malononitrile.
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Affiliation(s)
- Bang-Hong Zhang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Lin-Sheng Lei
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Si-Zhan Liu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xue-Qing Mou
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Wei-Ting Liu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shao-Hua Wang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
- School of Chemical and Environmental Engineering
| | - Jie Wang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Wen Bao
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Kun Zhang
- School of Chemical and Environmental Engineering
- Wuyi University
- Jiangmen 529020
- P. R. China
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