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Genaev AM, Salnikov GE, Koltunov KY. DFT insights into superelectrophilic activation of α,β-unsaturated nitriles and ketones in superacids. Org Biomol Chem 2022; 20:6799-6808. [PMID: 35959855 DOI: 10.1039/d2ob01141g] [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
Superelectrophilic activation of α,β-unsaturated carbonyl compounds and their isoelectronic analogs, proceeding normally under superacidic conditions, have led to a great variety of beneficial synthetic transformations. However, the essence of such activation is not yet fully recognized, while a number of alternative views on the subject have been discussed at length in the literature. Here, taking the example of virtual reactions of cinnamonitrile and benzalacetone with benzene, their feasible mechanistic variants, including multiple protonation (coordination to AlCl3) of the reactants, were analyzed based on density functional theory (DFT). It is revealed that the most plausible reaction pathways involve the initial N- or O-protonation (coordination to AlCl3) of the activated compounds followed by subsequent protonation on the α-C-atom. Dicationic superelectrophiles thus formed ensure practically barrier-free reactions with benzene in addition to a more favorable energetic profile of their generating, which is in marked contrast to other potential reaction pathways.
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Affiliation(s)
- Alexander M Genaev
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, Pr. Lavrentieva 9, Novosibirsk, 630090, Russia.
| | - George E Salnikov
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, Pr. Lavrentieva 9, Novosibirsk, 630090, Russia.
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Kazakova AN, Vasilyev AV. Trifluoromethanesulfonic acid in organic synthesis. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017040017] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zalivatskaya AS, Ryabukhin DS, Tarasenko MV, Ivanov AY, Boyarskaya IA, Grinenko EV, Osetrova LV, Kofanov ER, Vasilyev AV. Metal-free hydroarylation of the side chain carbon-carbon double bond of 5-(2-arylethenyl)-3-aryl-1,2,4-oxadiazoles in triflic acid. Beilstein J Org Chem 2017; 13:883-894. [PMID: 28546846 PMCID: PMC5433146 DOI: 10.3762/bjoc.13.89] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Accepted: 05/03/2017] [Indexed: 12/31/2022] Open
Abstract
The metal-free reaction of 5-(2-arylethenyl)-3-aryl-1,2,4-oxadiazoles with arenes in neat triflic acid (TfOH, CF3SO3H), both under thermal and microwave conditions, leads to 5-(2,2-diarylethyl)-3-aryl-1,2,4-oxadiazoles. The products are formed through the regioselective hydroarylation of the side chain carbon-carbon double bond of the starting oxadiazoles in yields up to 97%. According to NMR data and DFT calculations, N4,C-diprotonated forms of oxadiazoles are the electrophilic intermediates in this reaction.
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Affiliation(s)
- Anna S Zalivatskaya
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per., 5, Saint Petersburg, 194021, Russia
| | - Dmitry S Ryabukhin
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per., 5, Saint Petersburg, 194021, Russia
| | - Marina V Tarasenko
- Yaroslavl State Technical University, Moskovskiy pr., 88, Yaroslavl, 150023, Russia
| | - Alexander Yu Ivanov
- Center for Magnetic Resonance, Research park, Saint Petersburg State University, Universitetskiy pr., 26, Saint Petersburg, Petrodvoretz, 198504, Russia
| | - Irina A Boyarskaya
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg, 199034, Russia
| | - Elena V Grinenko
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per., 5, Saint Petersburg, 194021, Russia
| | - Ludmila V Osetrova
- Institute of Synthetic Rubber, Gapsalskaya str., 1, Saint Petersburg, 198035, Russia
| | - Eugeniy R Kofanov
- Yaroslavl State Technical University, Moskovskiy pr., 88, Yaroslavl, 150023, Russia
| | - Aleksander V Vasilyev
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per., 5, Saint Petersburg, 194021, Russia
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg, 199034, Russia
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Xiao Y, Wang J, Xia W, Shu S, Jiao S, Zhou Y, Liu H. γ-Carbon Activation through N-Heterocyclic Carbene/Brønsted Acids Cooperative Catalysis: A Highly Enantioselective Route to δ-Lactams. Org Lett 2015. [DOI: 10.1021/acs.orglett.5b01827] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yonglong Xiao
- CAS Key Laboratory
of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road, Shanghai 201203, P. R. China
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Jinxin Wang
- China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Wenjing Xia
- CAS Key Laboratory
of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Shuangjie Shu
- CAS Key Laboratory
of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Shenchao Jiao
- CAS Key Laboratory
of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Yu Zhou
- CAS Key Laboratory
of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Hong Liu
- CAS Key Laboratory
of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences 555 Zuchongzhi Road, Shanghai 201203, P. R. China
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Beck TN, Lloyd D, Kuskovsky R, Minah J, Arora K, Plotkin BJ, Green JM, Boshoff HI, Barry C, Deschamps J, Konaklieva MI. Non-transpeptidase binding arylthioether β-lactams active against Mycobacterium tuberculosis and Moraxella catarrhalis. Bioorg Med Chem 2015; 23:632-47. [PMID: 25549898 PMCID: PMC6415315 DOI: 10.1016/j.bmc.2014.11.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 11/08/2014] [Accepted: 11/18/2014] [Indexed: 10/24/2022]
Abstract
The prevalence of drug resistance in both clinical and community settings as a consequence of alterations of biosynthetic pathways, enzymes or cell wall architecture is a persistent threat to human health. We have designed, synthesized, and tested a novel class of non-transpeptidase, β-lactamase resistant monocyclic β-lactams that carry an arylthio group at C4. These thioethers exhibit inhibitory and cidal activity against serine β-lactamase producing Mycobacterium tuberculosis wild type strain (Mtb) and multiple (n=8) β-lactamase producing Moraxella catarrhalis clinical isolates.
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Affiliation(s)
- Tim N Beck
- Department of Chemistry, American University, Washington, DC 20016, USA
| | - Dina Lloyd
- Department of Chemistry, American University, Washington, DC 20016, USA
| | | | - Jeanette Minah
- Department of Chemistry, American University, Washington, DC 20016, USA
| | - Kriti Arora
- Tuberculosis Research Section, LCID, NIAID, NIH 33 North Drive, Bldg 33, Rm 2W20C, Bethesda, MD 20892, USA
| | - Balbina J Plotkin
- Department of Microbiology and Immunology, Midwestern University, Chicago, IL 60515, USA
| | - Jacalyn M Green
- Department of Microbiology and Immunology, Midwestern University, Chicago, IL 60515, USA
| | - Helena I Boshoff
- Tuberculosis Research Section, LCID, NIAID, NIH 33 North Drive, Bldg 33, Rm 2W20C, Bethesda, MD 20892, USA
| | - Clifton Barry
- Tuberculosis Research Section, LCID, NIAID, NIH 33 North Drive, Bldg 33, Rm 2W20C, Bethesda, MD 20892, USA
| | - Jeffrey Deschamps
- Naval Research Laboratory, Code 6930 4555 Overlook Ave., Washington, DC 20375, USA
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Zakusilo DN, Ryabukhin DS, Boyarskaya IA, Yuzikhin OS, Vasilyev AV. Tandem superelectrophilic hydroarylation of C C bond and carbonyl reduction in cinnamides: synthetic rout to 3,3-diarylpropylamines, valuable pharmaceuticals. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sun C, Qu P, Li F. Rearrangement of aldoximes to amides in water under air atmosphere catalyzed by water-soluble iridium complex [Cp*Ir(H2O)3][OTf]2. Catal Sci Technol 2014. [DOI: 10.1039/c3cy00934c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
R = aryl or aliphatic group phosphorous ligand-free low catalytic loading under air atmosphere up to 93% yield; 37 examples.
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Affiliation(s)
- Chunlou Sun
- Key Laboratory for Soft Chemistry and Functional Materials
- Ministry of Education
- Nanjing University of Science and Technology
- Nanjing 210094, PR China
| | - Panpan Qu
- Key Laboratory for Soft Chemistry and Functional Materials
- Ministry of Education
- Nanjing University of Science and Technology
- Nanjing 210094, PR China
| | - Feng Li
- Key Laboratory for Soft Chemistry and Functional Materials
- Ministry of Education
- Nanjing University of Science and Technology
- Nanjing 210094, PR China
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King FD, Caddick S. The acid-mediated ring opening/cyclisation reaction of N-benzyl-α-aryl-azetidinones. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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