1
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Sun Y, Chen J, Zhang M. Iridium-catalyzed reductive β-alkylation of (iso)quinoline derivatives by an in situ enone-trapping strategy. Org Biomol Chem 2024; 22:4516-4520. [PMID: 38747903 DOI: 10.1039/d4ob00666f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
By employing [IrCp*Cl2]2/Mg(OMe)2/(CH2O)n as an applicable catalyst system, we report a reductive β-alkylation of (iso)quinolinium salts with cost-effective and readily available β-chloro ketones, proceeding with good chemoselectivity, mild reaction conditions, and without the need for introduction of a substituent at position-3 of the quinolyl skeleton. Mechanistic investigations suggest that the reaction proceeds via a sequence of hydride transfer-initiated dearomatization of (iso)quinolinium salts, in situ enamine-trapping of enone and a second round of hydride transfer to the coupling adducts. The present work offers an important complement to the synthesis of functionalized (iso)tetrahydroquinolines.
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Affiliation(s)
- Yanping Sun
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China.
| | - Jianjie Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China.
| | - Min Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China.
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2
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Escolano M, Gaviña D, Alzuet-Piña G, Díaz-Oltra S, Sánchez-Roselló M, Pozo CD. Recent Strategies in the Nucleophilic Dearomatization of Pyridines, Quinolines, and Isoquinolines. Chem Rev 2024; 124:1122-1246. [PMID: 38166390 PMCID: PMC10902862 DOI: 10.1021/acs.chemrev.3c00625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Dearomatization reactions have become fundamental chemical transformations in organic synthesis since they allow for the generation of three-dimensional complexity from two-dimensional precursors, bridging arene feedstocks with alicyclic structures. When those processes are applied to pyridines, quinolines, and isoquinolines, partially or fully saturated nitrogen heterocycles are formed, which are among the most significant structural components of pharmaceuticals and natural products. The inherent challenge of those transformations lies in the low reactivity of heteroaromatic substrates, which makes the dearomatization process thermodynamically unfavorable. Usually, connecting the dearomatization event to the irreversible formation of a strong C-C, C-H, or C-heteroatom bond compensates the energy required to disrupt the aromaticity. This aromaticity breakup normally results in a 1,2- or 1,4-functionalization of the heterocycle. Moreover, the combination of these dearomatization processes with subsequent transformations in tandem or stepwise protocols allows for multiple heterocycle functionalizations, giving access to complex molecular skeletons. The aim of this review, which covers the period from 2016 to 2022, is to update the state of the art of nucleophilic dearomatizations of pyridines, quinolines, and isoquinolines, showing the extraordinary ability of the dearomative methodology in organic synthesis and indicating their limitations and future trends.
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Affiliation(s)
- Marcos Escolano
- Department of Organic Chemistry, Faculty of Pharmacy, University of Valencia, 46100 Burjassot, Valencia, Spain
| | - Daniel Gaviña
- Department of Organic Chemistry, Faculty of Pharmacy, University of Valencia, 46100 Burjassot, Valencia, Spain
| | - Gloria Alzuet-Piña
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Valencia, 46100 Burjassot, Valencia, Spain
| | - Santiago Díaz-Oltra
- Department of Organic Chemistry, Faculty of Pharmacy, University of Valencia, 46100 Burjassot, Valencia, Spain
| | - María Sánchez-Roselló
- Department of Organic Chemistry, Faculty of Pharmacy, University of Valencia, 46100 Burjassot, Valencia, Spain
| | - Carlos Del Pozo
- Department of Organic Chemistry, Faculty of Pharmacy, University of Valencia, 46100 Burjassot, Valencia, Spain
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3
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Wang M, Zhang M. Diastereoselective construction of carbo-bridged polyheterocycles by a three-component tandem annulation reaction. Org Biomol Chem 2023; 21:6342-6347. [PMID: 37497637 DOI: 10.1039/d3ob01013a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
By a hydroamination-induced tandem annulation process, we herein report a new three-component reaction for room temperature construction of carbo-bridged polyheterocycles with exclusive diastereoselectivity, which features readily available feedstocks, catalyst-free conditions, good substrate and functionality compatibility, no need for transition metal catalysts, and high step and atom efficiency. The products are formed via initial formation of 1,2-dihydro-3H-pyrazol-3-one nucleophiles from but-2-ynedioates and hydrazine followed by 2,4-difunctionalization of N-heteroarenium salts. Given that the obtained products possess structurally important tetrahydroquinoline and pyranopyrazole motifs, the developed chemistry is anticipated to be further applied to the discovery of functional molecules including biomedical ones.
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Affiliation(s)
- Maorui Wang
- School of Chemistry and Chemical Engineering and State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China.
| | - Min Zhang
- School of Chemistry and Chemical Engineering and State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China.
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4
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Costello A, Duke R, Sorensen S, Kothalawala NL, Ogbaje M, Sarkar N, Kim DY, Risko C, Parkin SR, Huckaba AJ. Hydrogen-Bonding Trends in a Bithiophene with 3- and/or 4-Pyridyl Substituents. ACS OMEGA 2023; 8:24485-24494. [PMID: 37457451 PMCID: PMC10339323 DOI: 10.1021/acsomega.3c02423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023]
Abstract
To improve the charge-carrier transport capabilities of thin-film organic materials, the intermolecular electronic couplings in the material should be maximized. Decreasing intermolecular distance while maintaining proper orbital overlap in highly conjugated aromatic molecules has so far been a successful way to increase electronic coupling. We attempted to decrease the intermolecular distance in this study by synthesizing cocrystals of simple benzoic acid coformers and dipyridyl-2,2'-bithiophene molecules to understand how the coformer identity and pyridine N atom placement affected solid-state properties. We found that with the 5-(3-pyridyl)-5'-(4-pyridyl)-isomer, the 4-pyridyl ring interacted with electrophiles and protons more strongly. Synthesized cocrystal powders were found to have reduced average crystallite size in reference to the parent compounds. The opposite was found for the intermolecular electronic couplings, as determined via density functional theory (DFT) calculations, which were relatively large in some of the cocrystals.
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Affiliation(s)
- Alison
M. Costello
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Rebekah Duke
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
- Center
for Applied Energy Research, University
of Kentucky, Lexington, Kentucky 40511, United States
| | - Stephanie Sorensen
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | | | - Moses Ogbaje
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
- Center
for Applied Energy Research, University
of Kentucky, Lexington, Kentucky 40511, United States
| | - Nandini Sarkar
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Doo Young Kim
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Chad Risko
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
- Center
for Applied Energy Research, University
of Kentucky, Lexington, Kentucky 40511, United States
| | - Sean R. Parkin
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Aron J. Huckaba
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
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Fu D, Xu J. Halide-promoted pyridinylation of α-acylmethylides with 2-halo-1-methylpyridinium iodides as reagents. Org Biomol Chem 2023; 21:1008-1013. [PMID: 36602179 DOI: 10.1039/d2ob02078e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Halide-promoted pyridinylation between α-acyl sulfonylmethylides and 2-halo-1-methylpyridinium iodides in a transition-metal-free protocol is described. A broad range of α-acyl sulfonylmethylides were transformed to bifunctionalized vinylsulfones in moderate to good yields, thereby providing a facile and practical approach for constructing methylthio- and pyridinoxyl-substituted vinylsulfones. The substrates can be extended to other acyl methylides. The reaction was shown to entail the formation of a C-O bond and consecutive breaking of C-S, C-Cl and C-N bonds.
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Affiliation(s)
- Duo Fu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
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Duan D, Cai F, Wu Y, Gong Q, Huang A, Yi D, Li Y, Lai Y, Peng XJ. Base-catalyzed monofunctionalization of N-alkyl activated azaarenes to construct 2-Iminoderivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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7
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Wan H, Xu Q, Wu J, Lian C, Liu H, Zhang B, He J, Chen D, Lu J. SuFEx‐Enabled Elastic Polysulfates for Efficient Removal of Radioactive Iodomethane and Polar Aprotic Organics through Weak Intermolecular Forces. Angew Chem Int Ed Engl 2022; 61:e202208577. [DOI: 10.1002/anie.202208577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Haibo Wan
- College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou Jiangsu 215123 China
| | - Qingfeng Xu
- College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou Jiangsu 215123 China
| | - Jiacheng Wu
- College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou Jiangsu 215123 China
| | - Cheng Lian
- School of Chemistry and Molecular Engineering East China University of Science and Technology China
| | - Honglai Liu
- School of Chemistry and Molecular Engineering East China University of Science and Technology China
| | - Bing Zhang
- School of Renewable Energy North China Electric Power University China
| | - Jinghui He
- College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou Jiangsu 215123 China
| | - Dongyun Chen
- College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou Jiangsu 215123 China
| | - Jianmei Lu
- College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou Jiangsu 215123 China
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8
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Wan H, Xu Q, Wu J, Lian C, Liu H, Zhang B, He J, Chen D, Lu JM. SuFEx‐enabled Elastic Polysulfates for Efficient Removal of Radioactive Iodomethane and Polar Aprotic Organics through Weak Intermolecular Forces. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Haibo Wan
- Soochow University College of Chemistry Chemical Engineering and Materials Science College of Chemistry Chemical Engineering and Materials Science CHINA
| | - Qingfeng Xu
- Soochow University College of Chemistry Chemical Engineering and Materials Science College of Chemistry, Chemical Engineering and Materials Science CHINA
| | - Jiacheng Wu
- Soochow University College of Chemistry Chemical Engineering and Materials Science College of Chemistry Chemical Engineering and Materials Science CHINA
| | - Cheng Lian
- East China University of Science and Technology School of Chemistry and Molecular Engineering School of Chemistry and Molecular Engineering CHINA
| | - Honglai Liu
- East China University of Science and Technology School of Chemistry and Molecular Engineering School of Chemistry and Molecular Engineering CHINA
| | - Bing Zhang
- North China Electric Power University School of Renewable Energy School of Renewable Energy CHINA
| | - Jinghui He
- Soochow University College of Chemistry Chemical Engineering and Materials Science College of Chemistry Chemical Engineering and Materials Science CHINA
| | - Dongyun Chen
- Soochow University College of Chemistry Chemical Engineering and Materials Science College of Chemistry Chemical Engineering and Materials Science CHINA
| | - Jian-Mei Lu
- Soochow University College of Chemistry, Chemical Engineering and Materials Science No.199 Renai RoadSuzhou Industrial Park 215123 Suzhou CHINA
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