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Le ST, Asahara H, Nishiwaki N. Synthesis of Nitroaromatic Compounds via Three-Component Ring Transformations. Molecules 2021; 26:molecules26030639. [PMID: 33530612 PMCID: PMC7865560 DOI: 10.3390/molecules26030639] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 01/23/2021] [Accepted: 01/24/2021] [Indexed: 11/30/2022] Open
Abstract
1-Methyl-3,5-dinitro-2-pyridone serves as an excellent substrate for nucleophilic-type ring transformation because of the electron deficiency and presence of a good leaving group. In this review, we focus on the three-component ring transformation (TCRT) of dinitropyridone involving a ketone and a nitrogen source. When dinitropyridone is allowed to react with a ketone in the presence of ammonia, TCRT proceeds to afford nitropyridines that are not easily produced by alternative procedures. Ammonium acetate can be used as a nitrogen source instead of ammonia to undergo the TCRT, leading to nitroanilines in addition to nitropyridines. In these reactions, dinitropyridone serves as a safe synthetic equivalent of unstable nitromalonaldehyde.
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Affiliation(s)
- Song Thi Le
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan; (S.T.L.); (H.A.)
- Center for Equipment and Labour Safety, Vietnam Institute for Building Materials (VIBM), Ministry of Construction, 235 Nguyen Trai, Thanh Xuan, Hanoi 100000, Vietnam
| | - Haruyasu Asahara
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan; (S.T.L.); (H.A.)
- Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka 565-0871, Japan
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan; (S.T.L.); (H.A.)
- Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
- Correspondence: ; Tel.: +81-887-57-2517
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Nakaike Y, Yoshida Y, Yokoyama S, Ito A, Nishiwaki N. Synthesis and intramolecular ring transformation of N,N'-dialkylated 2,6,9-triazabicyclo[3.3.1]nonadienes. Org Biomol Chem 2020; 18:9109-9116. [PMID: 33150921 DOI: 10.1039/d0ob01950j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first and facile synthesis of N,N'-dialkylated 2,6,9-triazabicyclo[3.3.1]nonadienes was achieved by the [4 + 4] self-condensation of β-formyl-β-nitroenamine in the presence of ammonium acetate. The 2,6- and 2,9-dialkylated products were found to be interconvertible when dissolved in a solvent. This isomerization proceeds through intramolecular ring transformation via a common intermediate under equilibrium.
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Affiliation(s)
- Yumi Nakaike
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Yoshidahonmachi, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yusuke Yoshida
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan.
| | - Soichi Yokoyama
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan. and Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan and The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Akitaka Ito
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan. and Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan. and Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
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Substituent Diversity-directed Synthesis of Nitropyridines and Nitroanilines by Three-component Ring Transformation. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.proeng.2017.01.257] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Le ST, Asahara H, Nishiwaki N. An Alternative Synthetic Approach to 3-Alkylated/Arylated 5-Nitropyridines. J Org Chem 2015; 80:8856-8. [PMID: 26244697 DOI: 10.1021/acs.joc.5b01391] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An alternative method for the synthesis of 3-alkylated/arylated 5-nitropyridines was developed involving a three-component ring transformation of 3,5-dinitro-2-pyridone on treatment with aldehyde in the presence of ammonium acetate. This method facilitates the modification of the substituent at the 3-position by changing the precursor aldehyde. The use of solid ammonium acetate instead of ammonia as the nitrogen source renders the synthetic method more practical and user-friendly.
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Affiliation(s)
- Song Thi Le
- School of Environmental Science and Engineering, and ‡Research Center for Material Science and Engineering, Kochi University of Technology , Tosayamada, Kami, Kochi 782-8502, Japan
| | - Haruyasu Asahara
- School of Environmental Science and Engineering, and ‡Research Center for Material Science and Engineering, Kochi University of Technology , Tosayamada, Kami, Kochi 782-8502, Japan
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, and ‡Research Center for Material Science and Engineering, Kochi University of Technology , Tosayamada, Kami, Kochi 782-8502, Japan
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Le ST, Asahara H, Nishiwaki N. Metal-free Synthesis of 2-Alkenyl/Alkynyl-5-nitropyridines Using a Three-component Ring Transformation. CHEM LETT 2015. [DOI: 10.1246/cl.150045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Song Thi Le
- School of Environmental Science and Engineering, Kochi University of Technology
| | - Haruyasu Asahara
- School of Environmental Science and Engineering, Kochi University of Technology
- Research Center for Material Science and Engineering, Kochi University of Technology
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology
- Research Center for Material Science and Engineering, Kochi University of Technology
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Le ST, Asahara H, Nishiwaki N. Tailor-Made Synthesis ofN,N,2,6-Tetrasubstituted 4-Nitroanilines by Three-Component Ring Transformation of Dinitropyridone. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403652] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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