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Hann JL, Lyall CL, Kociok-Köhn G, Faverio C, Pantoş GD, Lewis SE. Unusual Regio- and Chemoselectivity in Oxidation of Pyrroles and Indoles Enabled by a Thianthrenium Salt Intermediate. Angew Chem Int Ed Engl 2024; 63:e202405057. [PMID: 38830180 DOI: 10.1002/anie.202405057] [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: 03/13/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/05/2024]
Abstract
A dearomative oxidation of pyrroles to Δ3-pyrrol-2-ones is described, which employs a sulfoxide as oxidant, in conjunction with a carboxylic acid anhydride and a Brønsted acid additive. 3-substituted pyrroles undergo regioselective oxidation to give the product isomer in which oxygen has been introduced at the more hindered position. Regioselectivity is rationalized by a proposed mechanism that proceeds by initial thianthrenium introduction at the less-hindered pyrrole α-position, followed by distal attack of an oxygen nucleophile and subsequent elimination of thianthrene. The same reaction conditions are also able to effect a chemoselective oxidation of indoles to indolin-3-ones and additionally of indolin-3-ones to 2-hydroxyindolin-3-ones. Here again, the regio- and chemoselectivities are rationalized through the intermediacy of a thianthrenium salt.
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Affiliation(s)
- Jodie L Hann
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Catherine L Lyall
- Research Facilities, University of Bath, Bath, BA2 7AY, United Kingdom
| | | | - Chiara Faverio
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - G Dan Pantoş
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Simon E Lewis
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
- Institute of Sustainability and Climate Change, University of Bath, Bath, BA2 7AY, United Kingdom
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Volkov PA, Khrapova KO, Vyi EM, Telezhkin AA, Bidusenko IA, Albanov AI, Schmidt EY, Trofimov BA. Dihydropyrrole-3-thiones: one-pot synthesis from propargylamines, acyl chlorides and sodium sulfide. Org Biomol Chem 2023; 21:6903-6913. [PMID: 37581533 DOI: 10.1039/d3ob01061a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
An efficient one-pot synthesis of 1,2,5-trisubstituted-1,2-dihydro-3H-pyrrole-3-thiones (up to 91% yield), representatives of essentially new heterocyclic systems, by the successive treatment of available propargylamines with acyl chlorides (PdCl2/CuI/Ph3P/Et3N, toluene, 40-45 °C, 3 h) and sodium sulfide (Na2S·9H2O, EtOH, 20-25 °C, 7 h) has been developed. The synthesis comprises the addition of sulfide anions to the formed aminoacetylenic ketones followed by dehydrative cyclization of the prototropically rearranged adducts.
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Affiliation(s)
- Pavel A Volkov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russian Federation.
| | - Kseniya O Khrapova
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russian Federation.
| | - Ekaterina M Vyi
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russian Federation.
| | - Anton A Telezhkin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russian Federation.
| | - Ivan A Bidusenko
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russian Federation.
| | - Alexander I Albanov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russian Federation.
| | - Elena Yu Schmidt
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russian Federation.
| | - Boris A Trofimov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, Russian Federation.
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Hassan AY, Sarg MT, Hussein EM. Design, Synthesis, and Anticancer Activity of Novel Benzothiazole Analogues. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3524] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aisha Y. Hassan
- Department of Chemistry, Faculty of Science (Girls) Al‐Azhar University Cairo Egypt
| | - Marwa T. Sarg
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Girls) Al‐Azhar University Cairo Egypt
| | - Ebtehal M. Hussein
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Girls) Al‐Azhar University Cairo Egypt
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Li P, Yong W, Sheng R, Rao W, Zhu X, Zhang X. Pd‐Catalyzed One‐Pot Insertion Reaction of Cyclic
C
‐Acylimines into Carbon‐Carbon σ‐Bonds for the Synthesis of Polyfunctional Indolin‐3‐ones from 2‐Alkynyl Arylazides and Aryl Ketones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801162] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ping Li
- Jiangsu key lab of Biomass-based Green Fuels and Chemicals, College of Chemical EngineeringNanjing Forestry University Nanjing 210037 People's Republic of China
| | - Wanxiong Yong
- Jiangsu key lab of Biomass-based Green Fuels and Chemicals, College of Chemical EngineeringNanjing Forestry University Nanjing 210037 People's Republic of China
| | - Rong Sheng
- Jiangsu key lab of Biomass-based Green Fuels and Chemicals, College of Chemical EngineeringNanjing Forestry University Nanjing 210037 People's Republic of China
| | - Weidong Rao
- Jiangsu key lab of Biomass-based Green Fuels and Chemicals, College of Chemical EngineeringNanjing Forestry University Nanjing 210037 People's Republic of China
| | - Xinbao Zhu
- Jiangsu key lab of Biomass-based Green Fuels and Chemicals, College of Chemical EngineeringNanjing Forestry University Nanjing 210037 People's Republic of China
| | - Xiaoxiang Zhang
- Jiangsu key lab of Biomass-based Green Fuels and Chemicals, College of Chemical EngineeringNanjing Forestry University Nanjing 210037 People's Republic of China
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5
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Jiang D, Wang GQ, Liu X, Zhang Z, Feng LS, Liu ML. Isatin Derivatives with Potential Antitubercular Activities. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3189] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Dan Jiang
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology; Xianning People's Republic of China
| | - Gang-Qiang Wang
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology; Xianning People's Republic of China
| | - Xiaofeng Liu
- Zhejiang Xianju Junye Pharmaceutical Co. Ltd; Xianju, Zhejiang 317300 People's Republic of China
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology; Wuhan, Hubei 430081 People's Republic of China
| | - Zhenbin Zhang
- Zhejiang Xianju Junye Pharmaceutical Co. Ltd; Xianju, Zhejiang 317300 People's Republic of China
| | | | - Ming-Liang Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing 100050 People's Republic of China
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6
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Synthesis of thieno[2,3- b ]indole-2,3-diones and their ring expansions induced by diazomethane. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.07.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Kobayashi K, Kado D, Nishikawa K. Synthesis of 1-Aroyl-1,2-dihydro-3H-indol-3-ones via Cyclization of N-[2-(2-Chloroacetyl)phenyl]benzamides with Triethylamine in the Presence of Di-tert-butyl Dicarbonate. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13450] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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