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Mishiro K, Sesumi A, Fujii T, Furuyama T, Kunishima M. Phototriggered Butenolide Formation from a Cyclobutenedione and an Acidic Nucleophile. Org Lett 2024; 26:380-384. [PMID: 38153695 DOI: 10.1021/acs.orglett.3c04054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
A phototriggered conjugation reaction of an aminocyclobutenedione and an acidic nucleophile was discovered. Upon blue light irradiation of the materials, a butenolide derivative with substituents derived from the aminocyclobutenedione and the nucleophile was produced. The reaction proceeded efficiently under organic solvent or organic solvent/aqueous buffer (1/1) conditions. This reaction would be useful for the synthesis of unique butenolide derivatives and derivatization of acidic functional groups contained in aqueous biomolecules.
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Affiliation(s)
- Kenji Mishiro
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Aiko Sesumi
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takanori Fujii
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Taniyuki Furuyama
- NanoMaterials Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Munetaka Kunishima
- Faculty of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe 650-8586, Japan
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2
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Krischer F, Jörges M, Leung TF, Darmandeh H, Gessner VH. Selectivity Control of the Ligand Exchange at Carbon in α-Metallated Ylides as a Route to Ketenyl Anions. Angew Chem Int Ed Engl 2023; 62:e202309629. [PMID: 37581571 DOI: 10.1002/anie.202309629] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/13/2023] [Accepted: 08/15/2023] [Indexed: 08/16/2023]
Abstract
α-Metallated ylides have recently been reported to undergo phosphine by CO exchange at the ylidic carbon atom to form isolable ketenyl anions. Systematic studies on the tosyl-substituted yldiides, R3 P=C(M)Ts (M=Li, Na, K), now reveal that carbonylation may lead to a competing metal salt (MTs) elimination. This side-reaction can be controlled by the choice of phosphine, metal cation, solvent and co-ligands, thus enabling the selective isolation of the ketenyl anion [Ts-CCO]M (2-M). Complexation of 2-Na by crown ether or cryptand allowed structure elucidation of the first free ketenyl anion [Ts-CCO]- , which showed an almost linear Ts-C-C linkage indicative for a pronounced ynolate character. However, DFT studies support a high charge at the ketenyl carbon atom, which is reflected in the selective carbon-centered reactivity. Overall, the present study provides important information on the selectivity control of ketenyl anion formation which will be crucial for future applications.
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Affiliation(s)
- Felix Krischer
- Faculty of Chemistry and Biochemistry, Inorganic Chemistry II, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Mike Jörges
- Faculty of Chemistry and Biochemistry, Inorganic Chemistry II, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Tsz-Fai Leung
- Faculty of Chemistry and Biochemistry, Inorganic Chemistry II, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Heidar Darmandeh
- Faculty of Chemistry and Biochemistry, Inorganic Chemistry II, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Viktoria H Gessner
- Faculty of Chemistry and Biochemistry, Inorganic Chemistry II, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
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Morales K, Samper KG, Peña Q, Hernando J, Lorenzo J, Rodríguez-Diéguez A, Capdevila M, Figueredo M, Palacios Ò, Bayón P. Squaramide-Based Pt(II) Complexes as Potential Oxygen-Regulated Light-Triggered Photocages. Inorg Chem 2018; 57:15517-15525. [PMID: 30495945 DOI: 10.1021/acs.inorgchem.8b02854] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Two new squaramide-based platinum(II) complexes C1 and C2 have been synthesized and fully characterized. Their photoresponse has been assessed and is discussed. A remarkable enhancement in the DNA binding activity has been observed for both complexes, up on irradiation. For C2, the release of Pt(II) provoked by its irradiation has been studied. The response of C2 has been found to be regulated by the presence of oxygen. In vitro cytotoxicity tests show an enhancement in the activity of complex C2 after selective irradiation under hypoxic conditions. Resulting Pt(II) species have been isolated and characterized by various analytical methods establishing this type of squaramido-based complexes as a proof of concept for new Pt(II) photocages.
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Affiliation(s)
- Kevin Morales
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès , Spain
| | - Katia G Samper
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès , Spain
| | - Quim Peña
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès , Spain.,Aix Marseille Univ, CNRS, Cent Marseille, iSm2 , 13013 Marseille , France
| | - Jordi Hernando
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès , Spain
| | - Julia Lorenzo
- Departament de Bioquímica i Biologia Molecular , Institut de Biotecnologia i Biomedicina (IBB) , Campus UAB , 08193 Cerdanyola del Vallès , Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias , Universidad de Granada , 18071 Granada , Spain
| | - Mercè Capdevila
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès , Spain
| | - Marta Figueredo
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès , Spain
| | - Òscar Palacios
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès , Spain
| | - Pau Bayón
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès , Spain
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Mortazavi ZFA, Islami MR, Khaleghi M. Highly Stereoselective Synthesis of Saccharin-Substituted β-Lactams via in Situ Generation of a Heterosubstituted Ketene and a Zwitterionic Intermediate as Potential Antibacterial Agents. Org Lett 2015; 17:3034-7. [DOI: 10.1021/acs.orglett.5b01309] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zahra F. A. Mortazavi
- Department
of Chemistry, Shahid Bahonar University of Kerman, 22 Bahman
Avenue, 76169 Kerman, Iran
| | - Mohammad R. Islami
- Department
of Chemistry, Shahid Bahonar University of Kerman, 22 Bahman
Avenue, 76169 Kerman, Iran
| | - Moj Khaleghi
- Department
of Biology, Shahid Bahonar University of Kerman, 76169 Kerman, Iran
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Allen AD, Tidwell TT. Structure and Mechanism in Ketene Chemistry. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2014. [DOI: 10.1016/b978-0-12-800256-8.00004-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Süleymanoğlu N, Ustabaş R, Alpaslan YB, Eyduran F, İskeleli NO. Experimental and theoretical investigation of the molecular and electronic structure of 3-ethoxy-4-isopropylaminocyclobut-3-ene-1,2-dione. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:35-41. [PMID: 22658995 DOI: 10.1016/j.saa.2012.04.083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 04/13/2012] [Accepted: 04/18/2012] [Indexed: 06/01/2023]
Abstract
The title compound, 3-ethoxy-4-isopropylaminocyclobut-3-ene-1,2-dione (EIAC) has been synthesized and characterized by NMR, FT-IR, UV-vis spectroscopy and single-crystal X-ray diffraction. The (1)H NMR spectra were recorded at 300 K and 315 K in CDCl(3) to determine syn/anti conformers of the compound EIAC. Density functional theory (DFT) calculations, optimized geometrical parameters, vibrational frequencies and chemical shift values of syn/anti conformer in CDCl(3) have been performed at B3LYP/6-311G(d) level, and compared with the experimental data. The values provided with the calculations support the experimental data of the compound EIAC. The presence of NH⋯O type intermolecular H bond can be perceived from the difference between experimental calculations and results of FT-IR and NMR calculations. In addition, B3LYP/6-311G(d) basis set has been used to calculate the molecular electrostatic potential, frontier molecular orbitals and electronic absorption spectra. HOMO-LUMO electronic transition of 5.12 eV is derived from the contribution of the bands n→σ(*) or π→π(*). FT-IR, NMR and X-ray spectral results and additionally DFT calculations exhibit that the compound EIAC exists in keto-enamine tautomeric form. The experimental (1)H NMR spectra recorded at 300 K and 315 K and theoretical (1)H NMR data indicate that the compound EIAC is in syn conformer.
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Affiliation(s)
- Nevin Süleymanoğlu
- Atatürk Vocational High School, Gazi University, 06760 Çubuk, Ankara, Turkey.
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Süleymanoğlu N, Ustabaş R, Alpaslan YB, Eyduran F, Ozyürek C, Iskeleli NO. Experimental (13C NMR, 1H NMR, FT-IR, single-crystal X-ray diffraction) and DFT studies on 3,4-bis(isoproylamino)cyclobut-3-ene-1,2-dione. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 83:472-477. [PMID: 21963193 DOI: 10.1016/j.saa.2011.08.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 08/23/2011] [Accepted: 08/29/2011] [Indexed: 05/31/2023]
Abstract
In this work, 3,4-bis(isoproylamino)cyclobut-3-ene-1,2-dione C(10)H(16)N(2)O(2) (I), was synthesized and characterized by (13)C NMR, (1)H NMR, FT-IR, UV-vis spectroscopy and single-crystal X-ray diffraction. DFT method with 6-31G(d,p) basis set has been used to calculate the optimized geometrical parameters, atomic charges, vibrational frequencies and chemical shift values. The calculated vibrational frequencies and chemical shift values are compared with experimental FT-IR and NMR spectra. The results of the calculation shows good agreement between experimental and calculated values of the compound I. The existence of N-H⋯O type intermolecular ve C-H⋯O type intramolecular hydrogen bonds can be deduced from differences between experimental and calculated results of FT-IR and NMR. In addition, the molecular electrostatic potential map and frontier molecular orbitals and electronic absorption spectra were performed at B3LYP/6-31G(d,p) level of theory. HOMO-LUMO electronic transition of 4.90 eV are derived from the contribution of the bands π→π* and n→π* The spectral results obtained from FT-IR, NMR and X-ray of I revealed that the compound I is in predominantly enamine tautomeric form, which was supported by DFT calculations.
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Sayyed-Alangi SZ, Baei MT, Nejati J, Varasteh Moradi A. Ab Initio Study of Conformational Properties of Heteroatom-Containing 1,2-Bisketene Analogues. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.526481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- S. Zahra Sayyed-Alangi
- a Department of Chemistry, Azadshahr Branch , Islamic Azad University , Azadshahr , Golestan , Iran
| | - Mohammad T. Baei
- a Department of Chemistry, Azadshahr Branch , Islamic Azad University , Azadshahr , Golestan , Iran
| | - Javad Nejati
- b Young Researchers Club, Aliabad Katool Branch , Islamic Azad University , Aliabad Katool , Golestan , Iran
| | - Ali Varasteh Moradi
- c Department of Chemistry , Gorgan Branch, Islamic Azad University , Gorgan , Golestan , Iran
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Rostami A, Colin A, Li XY, Chudzinski MG, Lough AJ, Taylor MS. N,N'-diarylsquaramides: general, high-yielding synthesis and applications in colorimetric anion sensing. J Org Chem 2010; 75:3983-92. [PMID: 20486682 DOI: 10.1021/jo100104g] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Zinc trifluoromethanesulfonate promotes efficient condensations of anilines with squarate esters, providing access to symmetrical and unsymmetrical squaramides in high yields from readily available starting materials. Efficient access to electron-deficient diaryl squaramides has enabled a systematic investigation of the colorimetric anion-sensing behavior of a p-nitro-substituted squaramide. Its behavior differs in dramatic and unexpected ways from that of structurally similar p-nitroaniline-based ureas, an effect that highlights the remarkable differences in acidity between the squaramide and urea functional groups. Computational studies illustrating the enhanced hydrogen bond donor ability and acidity of squaramides in comparison to ureas are presented.
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Affiliation(s)
- Ali Rostami
- Department of Chemistry, Lash Miller Laboratories, University of Toronto, 80 St George Street, Toronto ON M5S 3H6, Canada
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Cheon CH, Yamamoto H. Synthesis of N,N-Bis(nonaflyl) Squaric Acid Diamide and its Application to Organic Reactions. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.03.539] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Ramalingam V, Domaradzki ME, Jang S, Muthyala RS. Carbonyl Groups as Molecular Valves to Regulate Chloride Binding to Squaramides. Org Lett 2008; 10:3315-8. [DOI: 10.1021/ol801204s] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Vijayakumar Ramalingam
- Department of Chemistry and Biochemistry, Queens College and the Graduate Center of the City University of New York, Flushing, New York 11367-1597
| | - Maciej E. Domaradzki
- Department of Chemistry and Biochemistry, Queens College and the Graduate Center of the City University of New York, Flushing, New York 11367-1597
| | - Seogjoo Jang
- Department of Chemistry and Biochemistry, Queens College and the Graduate Center of the City University of New York, Flushing, New York 11367-1597
| | - Rajeev S. Muthyala
- Department of Chemistry and Biochemistry, Queens College and the Graduate Center of the City University of New York, Flushing, New York 11367-1597
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