1
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Wang D, Du J, Lin WL, Li YS, Dong ZB. Thiolation of Terminal Alkynes with Thiuram Disulfide Reagents Using Water as the Hydrogen Source: Stereoselective Synthesis of ( Z)-Vinyl Sulfides. J Org Chem 2023. [PMID: 38019102 DOI: 10.1021/acs.joc.3c01730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
A stereoselective and environmentally friendly thiolation of terminal alkynes was reported. Thiuram disulfide reagents (tetramethylthiuram disulfide and tetraethylthiuram disulfide) that reacted with alkynes in dimethyl sulfoxide (DMSO)/H2O could give (Z)-vinyl sulfides in good yields (up to 88%). This protocol features broad substrate scope, good stereoselectivity, high atom economy, good yields, and is transition metal-free. Mechanistic studies revealed that water and DMSO served as hydrogen sources, which greatly highlighted the unique reactivity of this special reaction involving two H-atom donors.
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Affiliation(s)
- Dan Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Jing Du
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Wan-Li Lin
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yue-Sheng Li
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China
| | - Zhi-Bing Dong
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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2
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Vlocskó RB, Xie G, Török B. Green Synthesis of Aromatic Nitrogen-Containing Heterocycles by Catalytic and Non-Traditional Activation Methods. Molecules 2023; 28:molecules28104153. [PMID: 37241894 DOI: 10.3390/molecules28104153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Recent advances in the environmentally benign synthesis of aromatic N-heterocycles are reviewed, focusing primarily on the application of catalytic methods and non-traditional activation. This account features two main parts: the preparation of single ring N-heterocycles, and their condensed analogs. Both groups include compounds with one, two and more N-atoms. Due to the large number of protocols, this account focuses on providing representative examples to feature the available methods.
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Affiliation(s)
- R Bernadett Vlocskó
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA 02125, USA
| | - Guoshu Xie
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA 02125, USA
| | - Béla Török
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, MA 02125, USA
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3
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Zeng C, Fang S, Guo S, Jiang H, Yang S, Wu W. Palladium-Catalyzed Tandem Nucleophilic Addition/C-H Functionalization of Anilines and Bromoalkynes for the Synthesis of 2-Phenylindoles. Org Lett 2023; 25:1409-1414. [PMID: 36857211 DOI: 10.1021/acs.orglett.3c00137] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
A novel and efficient palladium-catalyzed annulation of anilines with bromoalkynes for the synthesis of 2-phenylindoles has been described. This approach features excellent regio- and stereoselectivities and good functional group tolerance. Preliminary mechanistic studies indicate that anilines undergo anti-nucleophilic addition to bromoalkynes to generate (Z)-N-(2-bromo-1-phenylvinyl) anilines, followed by sequential C-H functionalization to deliver different substituted 2-phenylindoles. This method provides potential applications for the construction of various biologically active compounds.
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Affiliation(s)
- Caijin Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Songjia Fang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Shuqi Guo
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Shaorong Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, State Key Laboratory of Luminescent Materials and Devices, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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4
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Ballesteros-Garrido R. Recent developments in the synthesis of 4-, 5-, 6- and 7-azaindoles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2023. [DOI: 10.1016/bs.aihch.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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5
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External oxidant-free and transition metal-free synthesis of 5-amino-1,2,4-thiadiazoles as promising antibacterials against ESKAPE pathogen strains. Mol Divers 2022; 27:651-666. [PMID: 35639224 DOI: 10.1007/s11030-022-10445-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/18/2022] [Indexed: 10/18/2022]
Abstract
A new route to 5-amino-1,2,4-thiadiazole derivatives via reaction of N-chloroamidines with isothiocyanates has been proposed. The advantages of this method are high product yields (up to 93%), the column chromatography-free workup procedure, scalability and the absence of additive oxidizing agents or transition metal catalysts. The 28 examples of 5-amino-1,2,4-thiadiazole derivatives obtaining via the proposing protocol were evaluated in vitro against ESKAPE pathogens strains (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Enterobacter cloacae). It was found that compounds 5ba, 5bd, 6a, 6d and 6c have potent antibacterial activity (MIC values 0.09-1.5 μg mL-1), which is superior to the activity of commercial antibiotics such as pefloxacin (MIC 4-8 μg mL-1) and streptomycin (MIC 2-32 μg mL-1). The additional cytotoxic assay of hit compounds on PANC-1 cell line demonstrated the low or non-cytotoxicity activity at the same level of concentrations. Thus, these 5 compounds are promising starting point for further antimicrobial drug development.
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6
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Walsh PJ, Gao F, Du Y, Huang L, Wang N, Li X, Zhou XL, Zhang L, Huang S. Rhodium–Catalyzed Direct Arylation of Furopyridine: Synthesis and the Cardiac Effects of Dictamnine Derivatives. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101421] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Feng Gao
- Southwest Jiaotong University CHINA
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7
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Li L, Zeng HH, Zhang YY, Liang JY, Zhang XZ, Peng JB. Pd/Cu catalyzed carbonylation of α-aminoaryl-tethered alkylidenecyclopropanes: synthesis of furoquinoline derivatives. Org Chem Front 2022. [DOI: 10.1039/d2qo01420c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A Pd/Cu catalyzed carbonylation of α-aminoaryl-tethered ACPs for the synthesis of furoquinoline derivatives has been developed. Oxygen was used as the terminal oxidant.
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Affiliation(s)
- Lin Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Hui-Hui Zeng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - You-Ya Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Jin-Yan Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
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8
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Neto JSS, Zeni G. Recent Developments in the Cyclization of Alkynes and Nitrogen Compounds for the Synthesis of Indole Derivatives. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jose S. S. Neto
- Departamento de Química Universidade Federal de Santa Catarina Florianópolis Santa Catarina 88040-900 Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE Universidade Federal de Santa Maria Santa Maria Rio Grande do Sul 97105-900 Brazil
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9
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Motati DR, Amaradhi R, Ganesh T. Recent developments in the synthesis of azaindoles from pyridine and pyrrole building blocks. Org Chem Front 2021. [DOI: 10.1039/d0qo01079k] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The azaindole framework is ubiquitous in bioactive natural products and pharmaceuticals. This review highlights the synthetic approaches to azaindoles with advantages and limitations, mechanistic pathways and biological importance.
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Affiliation(s)
- Damoder Reddy Motati
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
| | - Radhika Amaradhi
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
| | - Thota Ganesh
- Department of Pharmacology and Chemical Biology
- Emory School of Medicine
- Atlanta
- USA
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10
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Gilmore J, Hwang D, Crissy JM, Mercado-Rodríguez JM, Katz JL. Synthesis of chryseno[1,2-b]heteroarenes and phenanthro[1,2-b:8,7-b']diheteroarenes by an SNAr-anionic cyclization cascade reaction strategy. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152663] [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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11
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Paixão DB, Rampon DS, Salles HD, Soares EGO, Bilheri FN, Schneider PH. Trithiocarbonate Anion as a Sulfur Source for the Synthesis of 2,5-Disubstituted Thiophenes and 2-Substituted Benzo[b]thiophenes. J Org Chem 2020; 85:12922-12934. [DOI: 10.1021/acs.joc.0c01516] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Douglas B. Paixão
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
| | - Daniel S. Rampon
- Laboratório de Polímeros e Catálise (LAPOCA), Departamento de Química, Universidade Federal do Paraná (UFPR), P.O. Box 19061, 81531-990, Curitiba, Rio Grande do Sul, Brazil
| | - Helena D. Salles
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
| | - Eduardo G. O. Soares
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
| | - Filipe N. Bilheri
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
| | - Paulo H. Schneider
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, Rio Grande do Sul, Brazil
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12
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Zhu DL, Xu R, Wu Q, Li HY, Lang JP, Li HX. Nickel-Catalyzed Sonogashira C(sp)–C(sp2) Coupling through Visible-Light Sensitization. J Org Chem 2020; 85:9201-9212. [DOI: 10.1021/acs.joc.0c01177] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Da-Liang Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Ruijie Xu
- College of Overseas Education, Nanjing Tech University, Nanjing 211816, People’s Republic of China
| | - Qi Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Hai-Yan Li
- Analysis and Testing Center, Soochow University, Suzhou 215123, People’s Republic of China
| | - Jian-Ping Lang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Hong-Xi Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
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13
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Liu J, Zhu L, Wan W, Huang X. Gold-Catalyzed Oxidative Cascade Cyclization of 1,3-Diynamides: Polycyclic N-Heterocycle Synthesis via Construction of a Furopyridinyl Core. Org Lett 2020; 22:3279-3285. [PMID: 32242410 DOI: 10.1021/acs.orglett.0c01086] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A facile and practical approach to construct a furopyridinyl motif through a gold-catalyzed cascade cyclization of easily accessible diynamides is described. This strategy offers a straightforward approach to furo[2,3-c]isoquinoline and 6H-furo[3',2':5,6]pyrido[3,4-b]indole derivatives. The reaction could build up four new bonds and two additional heteroaromatic rings via a single operation. The heterocyclic products show promising blue luminous performance with fluorescence quantum yields up to 75%.
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Affiliation(s)
- Jibing Liu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Zhu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wan Wan
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xueliang Huang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Fujian College, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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14
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Hoenig SM, Yan Y, Dougherty EA, Hudson R, Petovic S, Lee CK, Hu Y, Gomez LS, Katz JL. Convergent Strategy for the Synthesis of Oxa-, Thia-, and Selena[5]helicenes by Acetylene-Activated S NAr Reactions. J Org Chem 2020; 85:4553-4559. [PMID: 32133863 DOI: 10.1021/acs.joc.0c00052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A tandem acetylene-activated SNAr-anionic cyclization strategy is presented for the synthesis of chalcogen-containing hetero[5]helicenes. Oxa-, thia-, and selena[5]helicenes are accessed from common ortho-fluoro-ethynylarene precursors, allowing the heteroatoms to be installed at the 1-position or 1- and 12-positions of the hetero[5]helicene inner core surface.
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Affiliation(s)
- Samuel M Hoenig
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
| | - Youmian Yan
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
| | - Emily A Dougherty
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
| | - Reuben Hudson
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
| | - Sava Petovic
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
| | - Christopher K Lee
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
| | - Yusheng Hu
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
| | - Lucas S Gomez
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
| | - Jeffrey L Katz
- Department of Chemistry, Colby College, 5754 Mayflower Hill, Waterville, Maine 04901, United States
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15
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Neto JSS, Zeni G. Synthesis of indoles from alkynes and a nitrogen source under metal-free conditions. Org Biomol Chem 2020; 18:4906-4915. [DOI: 10.1039/d0ob00670j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review deals with the methodologies published in the last ten years, which used metal-free conditions to prepare indoles starting from alkynes and nitrogen compounds.
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Affiliation(s)
- Jose S. S. Neto
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Gilson Zeni
- Laboratorio de Sintese
- Reatividade
- Avaliaçao Farmacologica e Toxicologica de Organocalcogenios
- CCNE
- UFSM
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16
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Bugaenko DI, Karchava AV, Yurovskaya MA. Synthesis of indoles: recent advances. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4844] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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18
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Li Y, Luo X, Shao Y, Chen L. 2-Acetylthienopyridine Synthesis via Thiolation and Copper-Catalyzed Cyclization of o-Propynol Fluoropyridine Using Xanthate as a Thiol Surrogate. J Org Chem 2018; 83:8768-8774. [DOI: 10.1021/acs.joc.8b01037] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yibiao Li
- School of Chemical & Environmental Engineering, Wuyi University, Jiangmen, Guangdong Province 529090, P. R. China
| | - Xianglin Luo
- School of Chemical & Environmental Engineering, Wuyi University, Jiangmen, Guangdong Province 529090, P. R. China
| | - Yan Shao
- School of Chemical & Environmental Engineering, Wuyi University, Jiangmen, Guangdong Province 529090, P. R. China
| | - Lu Chen
- School of Chemical & Environmental Engineering, Wuyi University, Jiangmen, Guangdong Province 529090, P. R. China
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19
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[(PhCH2O)2P(CH3)2CHNCH(CH3)2]2PdCl2/CuI as Cocatalyst for Coupling-Cyclization of 2-Iodophenol with Terminal Alkynes in Water. Catalysts 2018. [DOI: 10.3390/catal8040136] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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20
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Hudson R, Zhang HR, LoTemplio A, Benedetto G, Hamasaka G, Yamada YMA, Katz JL, Uozumi Y. Poly(meta-phenylene oxides) for the design of a tunable, efficient, and reusable catalytic platform. Chem Commun (Camb) 2018; 54:2878-2881. [DOI: 10.1039/c8cc00774h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We present poly(meta-phenylene oxides) as versatile and tunable scaffolds for immobilized catalyst design.
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Affiliation(s)
- R. Hudson
- Center for Sustainable Resource Science
- RIKEN
- Wako
- Saitama 351-0198
- Japan
| | - H. R. Zhang
- Department of Chemistry
- Colby College
- Waterville
- USA
| | - A. LoTemplio
- Department of Chemistry
- Colby College
- Waterville
- USA
| | - G. Benedetto
- Department of Chemistry
- Colby College
- Waterville
- USA
| | | | - Y. M. A. Yamada
- Center for Sustainable Resource Science
- RIKEN
- Wako
- Saitama 351-0198
- Japan
| | - J. L. Katz
- Department of Chemistry
- Colby College
- Waterville
- USA
| | - Y. Uozumi
- Center for Sustainable Resource Science
- RIKEN
- Wako
- Saitama 351-0198
- Japan
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21
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Cui HL, Deng HQ, Lei JJ. Metal-free one-pot synthesis of benzofurans with ynones and quinones through aza-Michael/Michael/annulation sequence. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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22
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Rehan M, Nallagonda R, Das BG, Meena T, Ghorai P. Synthesis of Functionalized Benzo[b]furans via Oxidative Cyclization of o-Cinnamyl Phenols. J Org Chem 2017; 82:3411-3424. [PMID: 28249386 DOI: 10.1021/acs.joc.6b02752] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disclosed herein is an efficient synthetic route for the synthesis of functionalized 2-benzyl benzo[b]furans via a regioselective 5-exo-trig intramolecular oxidative cyclization of ortho-cinnamyl phenols using [PdCl2(CH3CN)2] as catalyst and benzoquinone as an oxidant. Further, a sequential ortho-cinnamylation of phenols using cinnamyl alcohols catalyzed by Re2O7, followed by an oxidative cyclization using the above Pd catalyst, is performed. The reaction showed broad substrate scope with good to excellent yields.
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Affiliation(s)
- Mohammad Rehan
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Rajender Nallagonda
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Braja Gopal Das
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Tannu Meena
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
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23
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Cai J, Huang S, He R, Chen L, Chen D, Jiang S, Li B, Li Y. Access to functionalized thienopyridines via a reagent-capsule-assisted coupling, thiolation and cyclization cascade sequence. Org Biomol Chem 2017; 15:333-337. [PMID: 27924330 DOI: 10.1039/c6ob02351g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thienopyridines and related heterocycles were prepared by a reagent-capsule-assisted palladium-catalyzed cross-coupling, thiolation and cyclization process in moderate to good yields.
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Affiliation(s)
- Jialing Cai
- School of Chemical & Environmental Engineering
- Wuyi University
- Jiangmen
- China
| | - Shuo Huang
- School of Chemical & Environmental Engineering
- Wuyi University
- Jiangmen
- China
| | - Ruenfa He
- School of Chemical & Environmental Engineering
- Wuyi University
- Jiangmen
- China
| | - Lu Chen
- School of Chemical & Environmental Engineering
- Wuyi University
- Jiangmen
- China
| | - Donghan Chen
- School of Chemical & Environmental Engineering
- Wuyi University
- Jiangmen
- China
| | - Shaohua Jiang
- School of Chemical & Environmental Engineering
- Wuyi University
- Jiangmen
- China
| | - Bin Li
- School of Chemical & Environmental Engineering
- Wuyi University
- Jiangmen
- China
| | - Yibiao Li
- School of Chemical & Environmental Engineering
- Wuyi University
- Jiangmen
- China
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24
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Li Y, Cheng L, Li B, Jiang S, Chen L, Shao Y. Transition-Metal-Free Thiolation Annulation of 2-Fluorophenylacetylene Derivatives: Expedient Synthesis of Benzo[b]thiophenes Using Na2S•9H2O. ChemistrySelect 2016. [DOI: 10.1002/slct.201600270] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yibiao Li
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen Guangdong Province 529020 China
| | - Liang Cheng
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen Guangdong Province 529020 China
| | - Bin Li
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen Guangdong Province 529020 China
| | - Shaohua Jiang
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen Guangdong Province 529020 China
| | - Lu Chen
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen Guangdong Province 529020 China
| | - Yan Shao
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen Guangdong Province 529020 China
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25
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Shen C, Wu XF. Base-regulated tunable synthesis of pyridobenzoxazepinones and pyridobenzoxazines. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00798d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A base-regulated one-pot protocol for the tunable synthesis of pyridobenzoxazepinones and pyridobenzoxazines has been developed. Pyridobenzoxazepinones and pyridobenzoxazines were produced in good yields selectively.
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Affiliation(s)
- Chaoren Shen
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock
- Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock
- Germany
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