1
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Solvent effect, quantification and correlation analysis of the nucleophilicities of cyclic secondary amines. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02483-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2
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Rammah M, Mahdhaoui F, Ayachi S, Boubaker T. Exploring the reactivity of benzotriazole derivatives: Mayr's approach and density functional theory analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Rammah M, Mahdhaoui F, Gabsi W, Boubaker T. Quantification of the Electrophilic Reactivities of Benzotriazoles and Structure‐Reactivity Relationships. ChemistrySelect 2021. [DOI: 10.1002/slct.202100568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mehdi Rammah
- Laboratoire C.H.P.N.R Faculté des Sciences de Monastir Université de Monastir Avenue de l'Environnement 5019 Monastir Tunisia
| | - Faouzi Mahdhaoui
- Laboratoire C.H.P.N.R Faculté des Sciences de Monastir Université de Monastir Avenue de l'Environnement 5019 Monastir Tunisia
| | - Wahiba Gabsi
- Laboratoire C.H.P.N.R Faculté des Sciences de Monastir Université de Monastir Avenue de l'Environnement 5019 Monastir Tunisia
| | - Taoufik Boubaker
- Laboratoire C.H.P.N.R Faculté des Sciences de Monastir Université de Monastir Avenue de l'Environnement 5019 Monastir Tunisia
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4
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Ayachi H, Raissi H, Mahdhaoui F, Boubaker T. Electrophilic reactivities of 7‐L‐4‐nitrobenzofurazans in σ‐complexation processes: Kinetic studies and structure–reactivity relationships. INT J CHEM KINET 2020. [DOI: 10.1002/kin.21390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hajer Ayachi
- Laboratoire C.H.P.N.R, Faculté des Sciences de MonastirUniversité de Monastir Avenue de l'Environnement Monastir 5019 Tunisia
| | - Hanen Raissi
- Laboratoire C.H.P.N.R, Faculté des Sciences de MonastirUniversité de Monastir Avenue de l'Environnement Monastir 5019 Tunisia
| | - Faouzi Mahdhaoui
- Laboratoire C.H.P.N.R, Faculté des Sciences de MonastirUniversité de Monastir Avenue de l'Environnement Monastir 5019 Tunisia
| | - Taoufik Boubaker
- Laboratoire C.H.P.N.R, Faculté des Sciences de MonastirUniversité de Monastir Avenue de l'Environnement Monastir 5019 Tunisia
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5
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Necibi F, Salah SB, Roger J, Hierso J, Boubaker T. Ambident electrophilicity of 4‐nitrobenzochalcogenadiazoles: Kinetic studies and structure‐reactivity relationships. INT J CHEM KINET 2020. [DOI: 10.1002/kin.21391] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Feriel Necibi
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (LR11S39)Faculté des SciencesUniversité de Monastir Monastir Tunisia
- Institut de Chimie Moléculaire (UMR‐CNRS 6302)Faculté des Sciences MirandeUniversité de Bourgogne Franche‐Comté Dijon France
| | - Saida Ben Salah
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (LR11S39)Faculté des SciencesUniversité de Monastir Monastir Tunisia
| | - Julien Roger
- Institut de Chimie Moléculaire (UMR‐CNRS 6302)Faculté des Sciences MirandeUniversité de Bourgogne Franche‐Comté Dijon France
| | - Jean‐Cyrille Hierso
- Institut de Chimie Moléculaire (UMR‐CNRS 6302)Faculté des Sciences MirandeUniversité de Bourgogne Franche‐Comté Dijon France
| | - Taoufik Boubaker
- Laboratoire de Chimie Hétérocyclique, Produits Naturels et Réactivité (LR11S39)Faculté des SciencesUniversité de Monastir Monastir Tunisia
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Kunyane P, Sonopo MS, Selepe MA. Synthesis of Isoflavones by Tandem Demethylation and Ring-Opening/Cyclization of Methoxybenzoylbenzofurans. JOURNAL OF NATURAL PRODUCTS 2019; 82:3074-3082. [PMID: 31702151 DOI: 10.1021/acs.jnatprod.9b00681] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The unexpected conversion of benzoylbenzofurans into isoflavones through an intramolecular cascade that involves deprotection and ring-opening/cyclization is described. This was discovered in an investigation of the possible transformation of benzoylbenzofurans into coumaronochromones. This route affords isoflavones in two major steps from acetophenones and benzoquinones. The transformation was validated by synthesizing differently substituted isoflavone derivatives and further applied to a concise synthesis of a potential anticancer lead compound, glaziovianin A (1).
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Affiliation(s)
- Phaladi Kunyane
- Department of Chemistry , University of Pretoria , Lynnwood Road , Hatfield , Pretoria 0002 , South Africa
| | - Molahlehi S Sonopo
- Radiochemistry , South African Nuclear Energy Corporation (Necsa) , Pelindaba , Brits 0240 , South Africa
| | - Mamoalosi A Selepe
- Department of Chemistry , University of Pretoria , Lynnwood Road , Hatfield , Pretoria 0002 , South Africa
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7
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Mayer RJ, Breugst M, Hampel N, Ofial AR, Mayr H. Ambident Reactivity of Phenolate Anions Revisited: A Quantitative Approach to Phenolate Reactivities. J Org Chem 2019; 84:8837-8858. [DOI: 10.1021/acs.joc.9b01485] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert J. Mayer
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany
| | - Martin Breugst
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany
| | - Nathalie Hampel
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany
| | - Armin R. Ofial
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany
| | - Herbert Mayr
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany
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8
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Gabsi W, Essalah K, Goumont R, Tangour B, Boubaker T. The ambident electrophilic behavior of 5-nitro-3-X-thiophenes in σ-complexation processes. INT J CHEM KINET 2018. [DOI: 10.1002/kin.21190] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wahiba Gabsi
- Laboratoire C.H.P.N.R, Faculté des Sciences de Monastir; Université de Monastir; Monastir Tunisia
| | - Khalid Essalah
- Unité de Recherche en Sciences Fondamentales et Didactique; Université de Tunis EL Manar; El Manar II Tunisia
| | - Régis Goumont
- Institut Lavoisier de Versailles, UMR 8180; Université de Versailles; Versailles Cedex France
| | - Bahoueddine Tangour
- Unité de Recherche en Sciences Fondamentales et Didactique; Université de Tunis EL Manar; El Manar II Tunisia
| | - Taoufik Boubaker
- Laboratoire C.H.P.N.R, Faculté des Sciences de Monastir; Université de Monastir; Monastir Tunisia
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9
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Raissi H, Jamaoui I, Goumont R, Boubaker T. Kinetic Studies on SN
Ar Reactions of Substituted Benzofurazan Derivatives: Quantification of the Electrophilic Reactivities and Effect of Amine Nature on Reaction Mechanism. INT J CHEM KINET 2017. [DOI: 10.1002/kin.21131] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- H. Raissi
- Laboratoire C.H.P.N.R; Faculté des Sciences de Monastir; Université de Monastir; 5019 Monastir Tunisie
| | - I. Jamaoui
- Laboratoire C.H.P.N.R; Faculté des Sciences de Monastir; Université de Monastir; 5019 Monastir Tunisie
| | - R. Goumont
- Institut Lavoisier de Versailles; UMR 8180; Université de Versailles; 78035 Versailles Cedex France
| | - T. Boubaker
- Laboratoire C.H.P.N.R; Faculté des Sciences de Monastir; Université de Monastir; 5019 Monastir Tunisie
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10
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Ben Salah S, Boubaker T, Goumont R. Kinetics and mechanism of phenoxide anions addition to 4-nitrobenzofurazan in aqueous solution. CAN J CHEM 2017. [DOI: 10.1139/cjc-2016-0182] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Second-order rate constants (k1) for the σ-complexation of 4-nitrobenzofurazan 1 with four 4-X-substituted phenoxide anions 2a–2d (X = OCH3, CH3, H and Cl) were measured in aqueous solution at 20 °C. Using this series of phenoxide anions as a reference, the electrophilicity parameter (E) of this electrophile 1 has been evaluated according to Mayr’s approach. With the E value of –9.42, Mayr’s equation was found to correctly predict the rate constants for the reactions of 1 with hydroxide ion in H2O and a 1:1 ratio of H2O to CH3CN. However, the large βnuc value of 1.12 obtained in the present work is clearly consistent with a single electron transfer (SET) mechanism.
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Affiliation(s)
- S. Ben Salah
- Laboratoire C.H.P.N.R, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’Environnement, 5019 Monastir, Tunisie
| | - T. Boubaker
- Laboratoire C.H.P.N.R, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’Environnement, 5019 Monastir, Tunisie
| | - R. Goumont
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45, Avenue des Etats-Unis, 78035 Versailles Cedex, France
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Mahdhaoui F, Dhahri N, Boubaker T. Single-Electron Transfer in σ-Complexation Reactions of 2,6-Dimethoxy-3,5-dinitropyridine with Para-X-phenoxide Anions in Aqueous Solution. INT J CHEM KINET 2016. [DOI: 10.1002/kin.21011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Faouzi Mahdhaoui
- Laboratoire C.H.P.N.R; Faculté des Sciences; Université de Monastir; Avenue de l’Environnement; 5019 Monastir Tunisie
| | - Nejeh Dhahri
- Laboratoire C.H.P.N.R; Faculté des Sciences; Université de Monastir; Avenue de l’Environnement; 5019 Monastir Tunisie
| | - Taoufik Boubaker
- Laboratoire C.H.P.N.R; Faculté des Sciences; Université de Monastir; Avenue de l’Environnement; 5019 Monastir Tunisie
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12
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Gabsi W, Boubaker T, Goumont R. Azo-Coupling Reactions of Para-X-Benzenediazonium Cations with 3-Ethoxythiophene in Acetonitrile. INT J CHEM KINET 2016. [DOI: 10.1002/kin.20989] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- W. Gabsi
- Laboratoire C.H.P.N.R; Faculté des Sciences de Monastir; Université de Monastir; Avenue de l'Environnement; 5019 Monastir Tunisie
| | - T. Boubaker
- Laboratoire C.H.P.N.R; Faculté des Sciences de Monastir; Université de Monastir; Avenue de l'Environnement; 5019 Monastir Tunisie
| | - R. Goumont
- Institut Lavoisier de Versailles; UMR 8180; Université de Versailles; 45, Avenue des Etats-Unis 78035 Versailles Cedex France
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