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Roychowdhury P, Samanta S, Tan H, Powers DC. N-Amino Pyridinium Salts in Organic Synthesis. Org Chem Front 2023; 10:2563-2580. [PMID: 37840843 PMCID: PMC10569450 DOI: 10.1039/d3qo00190c] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
C-N bond forming reactions hold immense significance to synthetic organic chemistry. In pursuit of efficient methods for the introduction of nitrogen in organic small molecules, myriad synthetic methods have been developed, and methods based on both nucleophilic and electrophilic aminating reagents have received sustained research effort. In response to continued challenges - the need for substrate prefunctionalization, the requirement for vestigial N-activating groups, and the need to incorporate nitrogen in ever more complex molecular settings - the development of novel aminating reagents remains a central challenge in method development. N-aminopyridinums and their derivatives have recently emerged as a class of bifunctional aminating reagents, which combine N-centered nucleophilicity with latent electrophilic or radical reactivity by virtue of the reducible N-N bond, with broad synthetic potential. Here, we summarize the synthesis and reactivity of N-aminopyridinium salts relevant to organic synthesis. The preparation and application of these reagents in photocatalyzed and metal-catalyzed transformations is discussed, showcasing the reactivity in the context of bifunctional platform and its potential for innovation in the field.
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Affiliation(s)
- Pritam Roychowdhury
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA
| | - Samya Samanta
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA
| | - Hao Tan
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA
| | - David C Powers
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA
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2
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Philippov I, Gatilov Y, Sonina A, Vorob’ev A. Oxidative [3+2]Cycloaddition of Alkynylphosphonates with Heterocyclic N-Imines: Synthesis of Pyrazolo[1,5- a]Pyridine-3-phosphonates. Molecules 2022; 27:molecules27227913. [PMID: 36432015 PMCID: PMC9694626 DOI: 10.3390/molecules27227913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/01/2022] [Accepted: 11/04/2022] [Indexed: 11/19/2022] Open
Abstract
A series of pyrazolo[1,5-a]pyridine-3-ylphosphonates were prepared with moderate to good yields by the oxidative [3+2]cycloaddition of 2-subtituted ethynylphosphonates with in situ generated pyridinium-N-imines and their annulated analogs. 2-Aliphatic and 2-Ph acetylenes demonstrate low activity, and the corresponding pyrazolopyridines were achieved with a moderate yield in the presence of 10 mol% Fe(NO3)3·9H2O. At the same time, tetraethyl ethynylbisphosphonate, diethyl 2-TMS- and 2-OPh-ethynylphosphonates possess much greater reactivity and the corresponding pyrazolo[1,5-a]pyridines, and their annulated derivatives were obtained with good to excellent yields without any catalyst. 2-Halogenated ethynylphosphonates also readily reacted with pyridinium-N-imines, forming complex mixtures containing poor amounts of 2-halogenated pyrazolopyridines.
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Affiliation(s)
- Igor Philippov
- Novosibirsk Institute of Organic Chemistry SB RAS, 9 Lavrentiev Avenue, 630090 Novosibirsk, Russia
| | - Yuriy Gatilov
- Novosibirsk Institute of Organic Chemistry SB RAS, 9 Lavrentiev Avenue, 630090 Novosibirsk, Russia
| | - Alina Sonina
- Novosibirsk Institute of Organic Chemistry SB RAS, 9 Lavrentiev Avenue, 630090 Novosibirsk, Russia
| | - Aleksey Vorob’ev
- Novosibirsk Institute of Organic Chemistry SB RAS, 9 Lavrentiev Avenue, 630090 Novosibirsk, Russia
- Department of Natural Science, Faculty of Organic Chemistry, Novosibirsk State University, 1 Pirogova Street, 630090 Novosibirsk, Russia
- Correspondence: ; Tel.: +7-952-9488714
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3
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Murtinho D, Elisa da Silva Serra M. Transition Metal Catalysis in Synthetic Heterocyclic Chemistry. HETEROCYCLES 2022. [DOI: 10.1002/9783527832002.ch5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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4
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Jannapu Reddy R, Sharadha N, Haritha Kumari A. Base-mediated [3 + 2]-cycloannulation strategy for the synthesis of pyrazolo[1,5- a]pyridine derivatives using ( E)-β-iodovinyl sulfones. Org Biomol Chem 2022; 20:4331-4337. [PMID: 35451451 DOI: 10.1039/d2ob00499b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyrazolo[1,5-a]pyridines continue to occupy a special place in medicinal chemistry, but the direct construction of 3-sulfonyl analogues remains unexplored. Under basic conditions, pyridinium-N-amine and the corresponding dipolar aminide played a vibrant role in [3 + 2]-cycloaddition using (E)-β-iodovinyl sulfones. K2CO3-mediated tandem cycloannulative-desulfonylation of (E)-β-iodovinyl sulfones with 1-aminopyridinium iodide is realized to access 2-substituted pyrazolo[1,5-a]pyridines in good to high yields. An essential modification of the dipolar N-tosylpyridinium imide allows the first preparative synthesis of 3-sulfonyl-pyrazolo[1,5-a]pyridines in moderate to high yields. Of note, the metal-free protocol features a broad substrate scope with good functional group tolerance and compatibility. The efficacy of the process was proved with gram-scale reactions, and a plausible mechanism is also presented based on concrete results.
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Affiliation(s)
- Raju Jannapu Reddy
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India.
| | - Nunavath Sharadha
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India.
| | - Arram Haritha Kumari
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India.
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5
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Wang A, Liu YZ, Shen Z, Qiao Z, Ma X. Regioselective Synthesis of Pyrazolo[1,5- a]pyridine via TEMPO-Mediated [3 + 2] Annulation-Aromatization of N-Aminopyridines and α,β-Unsaturated Compounds. Org Lett 2022; 24:1454-1459. [PMID: 35166547 DOI: 10.1021/acs.orglett.2c00035] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A TEMPO-mediated [3 + 2] annulation-aromatization protocol for the preparation of pyrazolo[1,5-a]pyridines from N-aminopyridines and α,β-unsaturated compounds was developed. The procedure offered multisubstituted pyrazolo[1,5-a]pyridines in good to excellent yield with high and predictable regioselectivity. The modification of marketed drugs including Loratadine, Abiraterone, and Metochalcone, and a one-pot three-step gram scale synthesis of key intermediate for the preparation of Selpercatinib were demonstrated. Mechanism studies show that TEMPO serves both as a Lewis acid and as an oxidant.
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Affiliation(s)
- Amu Wang
- Natural Products Research Centre, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ya-Zhou Liu
- Natural Products Research Centre, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
| | - Zhongke Shen
- Natural Products Research Centre, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zeen Qiao
- Natural Products Research Centre, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
| | - Xiaofeng Ma
- Natural Products Research Centre, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
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6
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Izmest'ev AN, Motornov VA, Vinogradov DB, Ioffe SL, Kravchenko AN, Gazieva GA. Tandem Michael addition/elimination – novel reactivity of pyridinium ylides in reaction with electron-deficient alkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00911k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Novel reactivity of pyridinium ylides in reaction with 4-oxothiazolidin-5-ylidenes as electron-deficient alkenes involving a tandem Michael addition/elimination process was developed to give double bond functionalization products in mild conditions.
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Affiliation(s)
- Alexei N. Izmest'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Vladimir A. Motornov
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 160 00 Prague 6, Czech Republic
| | - Dmitry B. Vinogradov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Angelina N. Kravchenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
| | - Galina A. Gazieva
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow 119991, Russian Federation
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7
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Tabolin AA. Fluoroheterocycle formation using fluoroalkynes and their synthetic equivalents. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Motornov V, Tabolin A, Ioffe S. Oxidative [3+2]-annulation of nitroalkenes and azolium ylides in the presence of Cu(II): efficient synthesis of [5,5]-annulated N-fused heterocycles. NEW J CHEM 2022. [DOI: 10.1039/d1nj05332a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile synthesis of [5,5]-annulated N-fused heterocycles – pyrrolo[2,1-b]thiazoles and pyrrolo[1,2-b]indazoles via oxidative [3+2]-annulation between nitroalkenes and azolium ylides in the presence of copper (II) was developed. The reaction proceeds...
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9
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Yang Z, Cao K, Peng X, Lin L, Fan D, Li J, Wang J, Zhang X, Jiang H, Li J. Micellar Catalysis: Visible‐Light Mediated Imidazo[1,2‐
a
]pyridine C—H Amination with
N
‐Aminopyridinium Salt Accelerated by Surfactant in Water. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100489] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhonglie Yang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering Southwest Jiaotong University Chengdu Sichuan 610041 China
| | - Kun Cao
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering Southwest Jiaotong University Chengdu Sichuan 610041 China
| | - Xiaoyan Peng
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering Southwest Jiaotong University Chengdu Sichuan 610041 China
| | - Li Lin
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering Southwest Jiaotong University Chengdu Sichuan 610041 China
| | - Danchen Fan
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering Southwest Jiaotong University Chengdu Sichuan 610041 China
| | - Jun‐Long Li
- Antibiotics Research and Re‐evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy Chengdu University Chengdu Sichuan 610106 China
| | - Jingxia Wang
- Irradiation Preservation Technology Key Laboratory of Sichuan Province Sichuan Institute of Atomic Energy Chengdu Sichuan 610101 China
| | - Xiaobin Zhang
- Irradiation Preservation Technology Key Laboratory of Sichuan Province Sichuan Institute of Atomic Energy Chengdu Sichuan 610101 China
| | - Hezhong Jiang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering Southwest Jiaotong University Chengdu Sichuan 610041 China
| | - Jiahong Li
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering Southwest Jiaotong University Chengdu Sichuan 610041 China
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10
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Transition-metal-switchable divergent synthesis of nitrile-containing pyrazolo[1,5-a]pyridines and indolizines. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.04.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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11
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Motornov VA, Tabolin AA, Nenajdenko VG, Ioffe SL. Copper‐Mediated Oxidative [3+2]‐Annulation of Nitroalkenes and Ylides of 1,2‐Diazines: Assembly of Functionalized Pyrrolo[1,2‐b]pyridazines. ChemistrySelect 2021. [DOI: 10.1002/slct.202103189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Vladimir A. Motornov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 Moscow 119991 Russia
| | - Andrey A. Tabolin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 Moscow 119991 Russia
| | - Valentine G. Nenajdenko
- Department of Chemistry M. V. Lomonosov Moscow State University Leninskie Gory 1 Moscow 119991 Russia
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 Moscow 119991 Russia
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12
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Aksenov AV, Arutiunov NA, Kirilov NK, Aksenov DA, Grishin IY, Aksenov NA, Wang H, Du L, Betancourt T, Pelly SC, Kornienko A, Rubin M. [3 + 2]-Annulation of pyridinium ylides with 1-chloro-2-nitrostyrenes unveils a tubulin polymerization inhibitor. Org Biomol Chem 2021; 19:7234-7245. [PMID: 34387294 PMCID: PMC8439629 DOI: 10.1039/d1ob01141c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Indolizines and pyrazolo[1,5-a]pyridines were prepared via [3 + 2]-cycloaddition of pyridinium ylides to 1-chloro-2-nitrostyrenes. The synthesized molecules were evaluated for antiproliferative activities against a BE(2)-C neuroblastoma cell line with several compounds decreasing the viability of cancer cells. Indolizine 9db showed higher potency than that of all-trans-retinoic acid, an approved cancer drug. Mechanistically, it was found to inhibit tubulin polymerization and it is thus proposed that the discovered chemistry can be exploited for the development of novel microtubule-targeting anticancer agents.
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Affiliation(s)
- Alexander V Aksenov
- Department of Chemistry, North Caucasus Federal University, 1a Pushkin St., Stavropol 355009, Russia.
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13
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An Easy Synthesis of Monofluorinated Derivatives of Pyrroles from β-Fluoro-β-Nitrostyrenes. Molecules 2021; 26:molecules26123515. [PMID: 34207692 PMCID: PMC8229656 DOI: 10.3390/molecules26123515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/03/2021] [Accepted: 06/06/2021] [Indexed: 11/17/2022] Open
Abstract
The catalyst-free conjugate addition of pyrroles to β-Fluoro-β-nitrostyrenes was investigated. The reaction was found to proceed under solvent-free conditions to form 2-(2-Fluoro-2-nitro-1-arylethyl)-1H-pyrroles. The effectiveness of this approach was demonstrated through the preparation of a series of the target products in a quantitative yield. The kinetics of a conjugate addition of pyrrole was studied in detail to reveal the substituent effect and activation parameters of the reaction. The subsequent base-induced elimination of nitrous acid afforded a series of novel 2-(2-Fluoro-1-arylvinyl)-1H-pyrroles prepared in up to an 85% isolated yield. The two-step sequence herein proposed is an indispensable alternative to a direct reaction with elusive and unstable 1-Fluoroacetylenes.
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14
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Motornov VA, Tabolin AA, Nelyubina YV, Nenajdenko VG, Ioffe SL. Copper-catalyzed [3 + 2]-cycloaddition of α-halonitroalkenes with azomethine ylides: facile synthesis of multisubstituted pyrrolidines and pyrroles. Org Biomol Chem 2021; 19:3413-3427. [PMID: 33899878 DOI: 10.1039/d1ob00146a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient route for the synthesis of multifunctionalized pyrrolidines based on copper-catalyzed diastereoselective [3 + 2]-cycloaddition of nitroalkenes with azomethine ylides was developed. Novel fluorinated heterocycles - β-fluoro-β-nitropyrrolidines - were accessed via this method. The products can be prepared in good to excellent yields and with high diastereoselectivity. Subsequent transformations of pyrrolidines including oxidative aromatization into fluorinated pyrrolines and medicinally attractive β-fluoro-NH-pyrroles as well as chemoselective reduction reactions were demonstrated. Application of the developed procedures for the non-fluorinated analogues was demonstrated to lead to various β-substituted pyrrole derivatives.
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Affiliation(s)
- Vladimir A Motornov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
| | - Andrey A Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str. 28, Moscow, 119991, Russia
| | - Valentine G Nenajdenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
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15
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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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16
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Ponomarev SA, Larkovich RV, Aldoshin AS, Tabolin AA, Ioffe SL, Groß J, Opatz T, Nenajdenko VG. Diels-Alder reaction of β-fluoro-β-nitrostyrenes with cyclic dienes. Beilstein J Org Chem 2021; 17:283-292. [PMID: 33564337 PMCID: PMC7849230 DOI: 10.3762/bjoc.17.27] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/13/2021] [Indexed: 01/31/2023] Open
Abstract
The Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic 1,3-dienes was investigated. A series of novel monofluorinated norbornenes was prepared in up to 97% yield. The reaction with 1,3-cyclohexadiene permits the preparation of monofluorinated bicyclo[2.2.2]oct-2-enes. The kinetic data of the reactions with 1,3-cyclopentadiene and 1,3-cyclohexadiene were used to calculate activation parameters. Furthermore, the synthetic utility of the cycloadducts obtained was demonstrated.
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Affiliation(s)
- Savva A Ponomarev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russian Federation
| | - Roman V Larkovich
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russian Federation
| | - Alexander S Aldoshin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russian Federation
| | - Andrey A Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky prosp. 47, Moscow 119991, Russian Federation
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky prosp. 47, Moscow 119991, Russian Federation
| | - Jonathan Groß
- Department of Chemistry Johannes Gutenberg-University, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Till Opatz
- Department of Chemistry Johannes Gutenberg-University, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Valentine G Nenajdenko
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russian Federation
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17
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Devi Priya D, Nandhakumar M, Mohana Roopan S. Pyrazolo[1,5-a]pyridine: Recent synthetic view on crucial heterocycles. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1805468] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Duraipandi Devi Priya
- Department of Chemistry, Chemistry of Heterocycles & Natural Product Research Laboratory, School of Advanced Science, Vellore, Tamilnadu, India
| | | | - Selvaraj Mohana Roopan
- Department of Chemistry, Chemistry of Heterocycles & Natural Product Research Laboratory, School of Advanced Science, Vellore, Tamilnadu, India
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18
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Motornov VA, Tabolin AA, Nelyubina YV, Nenajdenko VG, Ioffe SL. Acid‐Mediated Three Component Assembly of 4‐Fluoropyrazoles from α‐Fluoronitroalkenes, Hydrazines, and Aldehydes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000841] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Vladimir A. Motornov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 119991 Moscow Russia
- Higher Chemical College D. I. Mendeleev University of Chemical Technology of Russia Miusskaya sq. 9 125047 Moscow Russia
| | - Andrey A. Tabolin
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 119991 Moscow Russia
| | - Yulia V. Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciencesm Vavilov str. 28 119991 Moscow Russia
| | - Valentine G. Nenajdenko
- Department of Chemistry M. V. Lomonosov Moscow State University Leninskie Gory 1 119991 Moscow Russia
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky prosp. 47 119991 Moscow Russia
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19
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Synthesis of 3-Fluoropyrazolo[1,5-A]Pyridines by Fluorination of Methyl Pyrazolo[1,5-A]Pyridine-3-Carboxylates. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02757-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Larkovich RV, Ponomarev SA, Aldoshin AS, Tabolin AA, Ioffe SL, Nenajdenko VG. Diels-Alder Reaction of β-Fluoro-β-nitrostyrenes. Synthesis of Mono-fluorinated Six-Membered Derivatives. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Roman V. Larkovich
- Department of Chemistry; Lomonosov Moscow State University; Leninskie gory 1 119991 Moscow Russian Federation
| | - Savva A. Ponomarev
- Department of Chemistry; Lomonosov Moscow State University; Leninskie gory 1 119991 Moscow Russian Federation
| | - Alexander S. Aldoshin
- Department of Chemistry; Lomonosov Moscow State University; Leninskie gory 1 119991 Moscow Russian Federation
| | - Andrey A. Tabolin
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky prosp. 47 119991 Moscow Russian Federation
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky prosp. 47 119991 Moscow Russian Federation
| | - Valentine G. Nenajdenko
- Department of Chemistry; Lomonosov Moscow State University; Leninskie gory 1 119991 Moscow Russian Federation
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