1
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Sobhi C, Merzoud L, Bouasla S, Nacereddine AK, Morell C, Chermette H. Understanding the mechanism and regio- and stereo selectivity of [3 + 2] cycloaddition reactions between substituted azomethine ylide and 3,3,3-trifluoro-1-nitroprop-1-ene, within the molecular electron density theory. J Comput Chem 2023; 44:1208-1220. [PMID: 36708224 DOI: 10.1002/jcc.27080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/10/2022] [Accepted: 01/04/2023] [Indexed: 01/29/2023]
Abstract
The selectivity and the nature of the molecular mechanism of the [3 + 2] cycloaddition (32CA) reaction between 2-(dimethylamino)-1H-indene-1,3(2H)-dione (AY11) and trans(E)-3,3,3-trifluoro-1-nitroprop-1-ene(FNP10) has been studied, in which the molecular electron density theory using density functional theory methods at the MPWB1K/6-31G(d) computational level was used. Analysis of the global reactivity indices permits us to characterize FNP10 as a strong electrophile and AY11 as a strong nucleophile. Four reactive pathways associated with the ortho/meta regioselective channels and endo/exo stereoselective approaches modes have been explored and characterized in the gas phase and in the benzene solvent. The analysis of the relative energies associated with the different reaction pathways indicates that the 32CA reactions of the azomethine ylide (AY) with the nitroalkene (FNP) is meta regioselective with high endo stereoselectivity. This result is in good agreement with the experimental observations. electron localization function topological analysis of the most favored reactive pathways allows for characterizing the mechanism of this 32CA reactions as a non-concerted two-stage one-step mechanism. Finally, non-covalent interactions and quantum theory of atoms in molecule analyses at the meta/endo transition state structure indicate that the presence of different several weak interactions, namely, CF and NH contributed in favoring the formation of a meta-endo cycloadduct.
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Affiliation(s)
- Chafia Sobhi
- Laboratoire Physico-Chimie Des Surfaces Et Interfaces, Université du 20 Août 1955, Skikda, Algeria
| | - Lynda Merzoud
- Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMRCNRS 5280, Université de Lyon, Lyon, France
| | - Souad Bouasla
- Laboratory of Materials and Energetic Engineering, Faculty of Technology, University 20 August 1955, Skikda, Algeria
| | - Abdelmalek Khorief Nacereddine
- Laboratory of Physical Chemistry and Biology of Materials, Department of Physics and Chemistry, Higher Normal School for Technological Education of Skikda, Azzaba, Skikda, Algeria
| | - Christophe Morell
- Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMRCNRS 5280, Université de Lyon, Lyon, France
| | - Henry Chermette
- Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMRCNRS 5280, Université de Lyon, Lyon, France
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2
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Khireddine A, Boukelkoul M, Atalay Y, Tamer Ö, Avcɩ D, Merzoud L, Chermette H. Structural, Electronic, Thermodynamic, Optical and Nonlinear Optical Properties of Curcumin Complexes with Transition Metals: DFT and TD‐DFT Study. ChemistrySelect 2022. [DOI: 10.1002/slct.202104442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ahlem Khireddine
- Laboratoire de Physique Quantique et Systèmes Dynamiques Chemistry Department Sciences Faculty Ferhat Abbas Sétif-1 University 19000 Sétif Algeria
| | - Mebarek Boukelkoul
- Laboratoire de Physique Quantique et Systèmes Dynamiques Physics Department Sciences Faculty Ferhat Abbas Sétif-1 University 19000 Sétif Algeria
| | - Yusuf Atalay
- Sakarya University Faculty of Arts and Sciences Department of Physics 54187 Sakarya Turkey
| | - Ömer Tamer
- Sakarya University Faculty of Arts and Sciences Department of Physics 54187 Sakarya Turkey
| | - Davut Avcɩ
- Sakarya University Faculty of Arts and Sciences Department of Physics 54187 Sakarya Turkey
| | - Lynda Merzoud
- Université de Lyon Université Claude Bernard Lyon 1 Institut des Sciences Analytiques UMR CNRS 5280 69622 Villeurbanne Cedex France
| | - Henry Chermette
- Université de Lyon Université Claude Bernard Lyon 1 Institut des Sciences Analytiques UMR CNRS 5280 69622 Villeurbanne Cedex France
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Redjem N, Lakehal S, Lakehal A, Morell C, Merzoud L, Chermette H. Reactivity and a Charge-Transfer Model Analysis in Aminopolycarboxylic-Metal Complexes. Inorg Chem 2022; 61:4673-4680. [PMID: 35254062 DOI: 10.1021/acs.inorgchem.1c03860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the present work, we have calculated several density functional theory (DFT) reactivity descriptors for the aminopolycarboxylate (APC) acids at the B3LYP/6311++G (d,p) levels of theory, aiming to analyze their reactivity. Reactivity descriptors such as ionization energy, molecular hardness, electrophilicity, and condensed Fukui function local indices have been determined to predict the reactivity of APCs. The influence of the solvent was taken into account by employing the CPCM model. The results indicate that the solvation slightly modifies the tendency of the reactivity of the APCs studied. On the other hand, we applied a global and local charge-transfer partitioning model, which introduces two charge-transfer channels [one for accepting electrons (electrophilic) and another for donating one (nucleophilic)] to the complexation reaction of a set of APC acids with transition metals (Mn, Co, and Ni targets enlarged by Fe, Cu, and Zn). The correlation between the charges obtained for the interaction between APC acids and transition metal stability constants provides support for their interpretation as measures of the electrophilicity and nucleophilicity of a chemical species and, at the same time, allows one to describe the donation and back-donation processes in terms of the DFT of chemical reactivity. Also, the application of dual descriptors for these acids provides valuable information concerning the atoms in the reactants playing the most important roles in the reaction, thus helping to improve our understanding of the reaction under study.
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Affiliation(s)
- Nawel Redjem
- Laboratoire de Chimie Appliquée et Technologie des Matériaux, Université Larbi Ben M'hidi Oum el Bouaghi, 04000 Oum El Bouaghi, Algeria
| | - Salima Lakehal
- Laboratoire de Chimie des Matériaux et des Vivants: Activité & Réactivité, Université Batna 1, 05000 Batna, Algeria.,Institut des Sciences de la Terre et de l'univers, Université de Batna 2, 05001 Batna, Algeria
| | - Aicha Lakehal
- Faculté des Sciences Techniques, Université de Batna 2, 05000 Batna, Algeria
| | - Christophe Morell
- Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5280, Institut des Sciences Analytiques, 69622 Villeurbanne Cedex, France
| | - Lynda Merzoud
- Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5280, Institut des Sciences Analytiques, 69622 Villeurbanne Cedex, France
| | - Henry Chermette
- Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5280, Institut des Sciences Analytiques, 69622 Villeurbanne Cedex, France
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Chermette H, Benabila N, Merouani H, Latteli N, May AA, Morell C, Merzoud L. Dft Study of the Condensation Products of 2-Chloro-3-Formylquinolines with O-Aminophenol, O-Aminothiophenol and O-Phenylenediamine. SSRN Journal 2022. [DOI: 10.2139/ssrn.4214502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Merzoud L, Guégan F, Chermette H, Morell C. Understanding the intermolecular Diels-Alder cycloaddition promotion: Activation strain model/energy decomposition analysis model and conceptual density functional theory viewpoints. J Comput Chem 2021; 42:1364-1372. [PMID: 34056727 DOI: 10.1002/jcc.26548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/19/2021] [Accepted: 03/23/2021] [Indexed: 01/25/2023]
Abstract
The present work reports the computational study of the major Diels-Alder reaction between 2-bromocycloalkenone and a variety of mono- and di-substituted dienes. Through density functional theory (DFT) calculations and subsequent activation strain model/energy decomposition analysis/conceptual DFT (C-DFT) analyses, the key factors governing the activation barriers heights, and thus reactivity, are characterized. In contrast with a previous study, steric effects do not appear to control reactivity. Conversely, in all presented cases, a subtle interplay between deformation and interaction energies is evidenced at transition states. In the end, neither term alone is enough to explain or predict reactivity. Yet a simple C-DFT descriptor allows to predict with a reasonable efficiency the activation barriers: the excitation energy needed to observe a charge transfer from the diene to the dienophile. Theoretical elements are provided to support the use of this descriptor.
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Affiliation(s)
- Lynda Merzoud
- Institut des Sciences Analytiques, Université de Lyon, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
| | - Frédéric Guégan
- IC2MP UMR 7285, Université de Poitiers, 4 rue Michel Brunet, Poitiers, 86073, France
| | - Henry Chermette
- Institut des Sciences Analytiques, Université de Lyon, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
| | - Christophe Morell
- Institut des Sciences Analytiques, Université de Lyon, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
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Bijou D, Cornier T, Mishra S, Merzoud L, Chermette H, Jeanneau E, Maudez W, Benvenuti G, Daniele S. Synthesis and Thermal Behavior of Heteroleptic γ‐Substituted Acetylacetonate‐Alkoxides of Titanium. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Diane Bijou
- University of Lyon 1 IRCELYON UMR-CNRS 5256 2 avenue Albert Einstein 69626 Villeurbanne cedex France
- 3D-oxide 70 rue Gustave Eiffel 01630 Saint Genis Pouilly France
| | - Thibaut Cornier
- University of Lyon 1 IRCELYON UMR-CNRS 5256 2 avenue Albert Einstein 69626 Villeurbanne cedex France
| | - Shashank Mishra
- University of Lyon 1 IRCELYON UMR-CNRS 5256 2 avenue Albert Einstein 69626 Villeurbanne cedex France
| | - Lynda Merzoud
- University of Lyon ISA UMR-CNRS 5280 5 rue de la Doua 69100 Villeurbanne cedex France
| | - Henry Chermette
- University of Lyon ISA UMR-CNRS 5280 5 rue de la Doua 69100 Villeurbanne cedex France
| | - Erwann Jeanneau
- University of Lyon ISA Centre de diffractométrie Henry Longchamp 5 rue de la Doua 69100 Villeurbanne cedex France
| | - William Maudez
- 3D-oxide 70 rue Gustave Eiffel 01630 Saint Genis Pouilly France
| | | | - Stéphane Daniele
- University of Lyon 1 IRCELYON UMR-CNRS 5256 2 avenue Albert Einstein 69626 Villeurbanne cedex France
- Present address: Université Claude Bernard Lyon 1 CNRS-UMR 5218 CP2M-ESCPE Lyon 69616 Villeurbanne cedex France
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Khorief Nacereddine A, Merzoud L, Morell C, Chermette H. A computational investigation of the selectivity and mechanism of the Lewis acid catalyzed oxa-Diels-Alder cycloaddition of substituted diene with benzaldehyde. J Comput Chem 2021; 42:1296-1311. [PMID: 33931864 DOI: 10.1002/jcc.26547] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/09/2021] [Accepted: 04/14/2021] [Indexed: 11/11/2022]
Abstract
The selectivity and the mechanism of the uncatalyzed and AlCl3 catalyzed hetero-Diels-Alder reaction (HDR) between ([E]-4-methylpenta-2,4-dienyloxy)(tert-butyl)dimethylsilane 1 and benzaldehyde 2 have been studied using density functional theory at the MPWB1K/6-31G(d) level of theory. The uncatalyzed HDR between diene 1 and alkene 2 is characterized by a polar character and proceeds via an asynchronous one-step mechanism for the meta paths and synchronous for the ortho ones. In the presence of AlCl3 catalyst, the mechanism changes to be stepwise, while the first step is the rate-determining step. The activation energies widely decrease, and the polar character increases dramatically. A large analysis of the mechanism is performed using the activation strain model/energy decomposition analysis (ASM/EDA) model, the natural bond orbital (NBO) and state specific dual descriptors (SSDDs). The obtained results indicate that the combined interaction energy associated with the distortion of the reactants in these HDR are at the origin of the observed kinetics. NBO analyses were applied to estimate the Lewis-acid catalyst donor-acceptor interaction with the molecular system. The SSDD analysis shed light into the orientation effects on the reaction kinetics by providing important information about charge transfer interactions during the chemical reaction. It indicates that the more favorable HDR pathway have the lowest excitation energies, facilitating the interaction between diene 1 and benzaldehyde 2 moieties. Non-covalent interaction (NCI) and QTAIM analyses of the meta-endo structure indicate that the presence of several weak NCIs formed at this approach is at the origin of the meta-endo selectivity.
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Affiliation(s)
- Abdelmalek Khorief Nacereddine
- Laboratory of Physical Chemistry and Biology of Materials, Department of Physics and Chemistry, Higher Normal School of Technological Education-Skikda, City of Boucetta Brothers, Azzaba, Skikda, Algeria
| | - Lynda Merzoud
- Institut des Sciences Analytiques, Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
| | - Christophe Morell
- Institut des Sciences Analytiques, Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
| | - Henry Chermette
- Institut des Sciences Analytiques, Université de Lyon, CNRS, Université Claude Bernard Lyon 1, Villeurbanne Cedex, France
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Alonso de la Peña M, Merzoud L, Lamine W, Tuel A, Chermette H, Christ L. Robust pyrrole-Schiff base Zinc complexes as novel catalysts for the selective cycloaddition of CO2 to epoxides. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2020.101380] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Mechachti F, Lakehal S, Lakehal A, Morell C, Merzoud L, Chermette H. Predicted structure and selectivity of 3d transition metal complexes with glutamic N, N-bis(carboxymethyl) acid. NEW J CHEM 2021. [DOI: 10.1039/d1nj03298d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structure and selectivity of 3d transition metal complexes with glutamic N,N-bis(carboxymethyl) acid are analyzed and predicted from DFT calculations.
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Affiliation(s)
- Fatima Mechachti
- Laboratoire de Chimie des Matériaux et des Vivants, Activité & Réactivité, Université Batna1, Batna, Algerie
| | - Salima Lakehal
- Laboratoire de Chimie des Matériaux et des Vivants, Activité & Réactivité, Université Batna1, Batna, Algerie
- Institut des Sciences de La Terre et de L'univers, Université de Batna2, Batna, Algerie
| | - Aicha Lakehal
- Faculté des Sciences Techniques, Université de Batna2, Batna, Algerie
| | - Christophe Morell
- Université de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR CNRS 5280, 69622 Villeurbanne Cedex, France
| | - Lynda Merzoud
- Université de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR CNRS 5280, 69622 Villeurbanne Cedex, France
| | - Henry Chermette
- Université de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR CNRS 5280, 69622 Villeurbanne Cedex, France
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Abstract
Conceptual DFT tools (HAT, SPLET, SET-PT, aromaticity index,…) have been used to explore the antioxidant activity of thiaflavan compounds, and predict which derivate should be the best one.
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Affiliation(s)
- Douniazed Hannachi
- Département de Chimie
- Faculté des Sciences
- Université de Setif-1, El Bez
- Setif
- Algeria
| | - Nour El Houda Amrane
- Laboratoire d’Electrochimie
- d’Ingénierie Moléculaire et de Catalyse Redox (LEIMCR), Faculté de Technologie, Université Sétif-1
- Sétif
- Algeria
| | - Lynda Merzoud
- Université de Lyon, Université Claude Bernard Lyon 1
- CNRS UMR 5280, Institut des Sciences Analytiques
- 69622 Villeurbanne Cedex
- France
| | - Henry Chermette
- Université de Lyon, Université Claude Bernard Lyon 1
- CNRS UMR 5280, Institut des Sciences Analytiques
- 69622 Villeurbanne Cedex
- France
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11
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Guégan F, Tognetti V, Martínez-Araya JI, Chermette H, Merzoud L, Toro-Labbé A, Morell C. A statistical thermodynamics view of electron density polarisation: application to chemical selectivity. Phys Chem Chem Phys 2020; 22:23553-23562. [PMID: 33073279 DOI: 10.1039/d0cp03228j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fundamental link between conceptual density functional theory and statistical thermodynamics is herein drawn, showing that intermolecular electrostatic interactions can be understood in terms of effective work and heat exchange. From a more detailed analysis of the heat exchange in a perturbation theory framework, an associated entropy can be subsequently derived, which appears to be a suitable descriptor for the local polarisability of the electron density. A general rule of thumb is evidenced: the more the perturbation can be spread, both through space and among the excited states, the larger the heat exchange and entropy.
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Affiliation(s)
- Frédéric Guégan
- IC2MP UMR 7285, Université de Poitiers - CNRS, 4, rue Michel Brunet TSA, 51106-86073 Cedex 9 Poitiers, France.
| | - Vincent Tognetti
- Normandy Univ., COBRA UMR 6014 - FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére, 76821 Mont St Aignan, Cedex, France
| | - Jorge I Martínez-Araya
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello (UNAB), Av. República 498, Santiago, Chile
| | - Henry Chermette
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, Université Lyon 1 - 5, rue de la Doua, F-69100 Villeurbanne, France.
| | - Lynda Merzoud
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, Université Lyon 1 - 5, rue de la Doua, F-69100 Villeurbanne, France.
| | - Alejandro Toro-Labbé
- Laboratorio de Química Teórica Computacional (QTC), Facultad de Química, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Christophe Morell
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, Université Lyon 1 - 5, rue de la Doua, F-69100 Villeurbanne, France.
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Abstract
The electronic structure of Eu2+ compounds results from a complex combination of strongly correlated electrons and relativistic effects as well as weak ligand-field interaction. There is tremendous interest in calculating the electronic structure as nowadays the Eu2+ ion is becoming more and more crucial, for instance, in lighting technologies. Recently, interest in semiempirical methods to qualitatively evaluate the electronic structure and to model the optical spectra has gained popularity, although the theoretical methods strongly rely upon empirical inputs, hindering their prediction capabilities. Besides, ab initio multireference models are computationally heavy and demand very elaborative theoretical background. Herein, application of the ligand-field density functional theory (LFDFT) method that is recently available in the Amsterdam Modeling Suite is shown: (i) to elucidate the electronic structure properties on the basis of the multiplet energy levels of Eu configurations 4f7 and 4f65d1 and (ii) to model the optical spectra quite accurately if compared to the conventional time-dependent density functional theory tool. We present a theoretical study of the molecular Eu(η9-C9H9)2 complex and its underlying photoluminescence properties with respect to the Eu 4f-5d electron transitions. We model the excitation and emission spectra with good agreement with the experiments, opening up the possibility of modeling lanthanides in complex environment like nanomaterials by means of LFDFT at much-reduced computational resources and cost.
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Affiliation(s)
| | - Lynda Merzoud
- Institut Sciences Analytiques , Université de Lyon, Université de Lyon 1, UMR CNRS 5280 , 5 rue de la Doua , 69100 Villeurbanne , France
| | - Jules Tshishimbi Muya
- Department of Chemistry , Hanyang University , 222 Wangsimni-ro , Seongdong-gu , Seoul 04763 , Republic of Korea.,Department of Chemistry, Faculty of Sciences , University of Kinshasa , Kinshasa , DR Congo
| | - Henry Chermette
- Institut Sciences Analytiques , Université de Lyon, Université de Lyon 1, UMR CNRS 5280 , 5 rue de la Doua , 69100 Villeurbanne , France
| | - Claude Daul
- Department of Chemistry , University of Fribourg , CH-1700 Fribourg , Switzerland
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Merzoud L, Saal A, Morell C, Chermette H. Substituent Effect on the Himbert Intramolecular Arene/Allene Diels-Alder Reaction: NBO Analysis and State Specific Dual Descriptors. J Phys Chem A 2019; 123:10730-10738. [PMID: 31714777 DOI: 10.1021/acs.jpca.9b08773] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Conceptual density functional theory has been applied to study the Himbert intramolecular arene/allene Diels-Alder reaction. The effect of substitutions at different positions on the kinetics of these reactions has been analyzed. Therefore, from the calculation of the activation energies of more than 27 reactions involving concerted mechanisms, the selectivity of these reactions can be predicted and rationalized with the aid of conceptual DFT descriptors. An application of the two concepts, natural population analysis (NBO) and the state-specific dual descriptor (SSDD) for evaluating substituent effects, allows the investigation of the different interactions that promote a reaction compared to another. The SSDDs computed for the transition state structures provide important information about charge transfer interactions during the chemical reaction. In our case, the SSDD results show that the substituents promoting Himbert reaction have the lowest excitation energies, a fact which facilitates the allene/arene interaction. The NBO results show that according to the nature of the substituent, the Himbert reaction stands as a normal-electron demand or reverse. Thus, the interactions favoring each reaction are mentioned. The geometric deformation observed in the case of OCH3 is at the origin to the emergence of other low interactions between diene and dienophile as well as a strong electronic delocalization stabilizing the arene moiety. The calculated synchronicity indexes show that the Himbert intramolecular Diels-Alder reactions are very synchronous.
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Affiliation(s)
- Lynda Merzoud
- Département de Chimie , UMMTO University of Tizi-Ouzou , 15000 Tizi Ouzou , Algeria.,Institut des Sciences Analytiques, Université Claude Bernard Lyon 1 , Université de Lyon , UMR CNRS 5280, 69622 Villeurbanne Cedex , France
| | - Amar Saal
- Département de Chimie , UMMTO University of Tizi-Ouzou , 15000 Tizi Ouzou , Algeria.,Laboratory of Computational and Theoretical Chemistry and Photonics , USTHB University , 16111 Algiers , Algeria
| | - Christophe Morell
- Institut des Sciences Analytiques, Université Claude Bernard Lyon 1 , Université de Lyon , UMR CNRS 5280, 69622 Villeurbanne Cedex , France
| | - Henry Chermette
- Institut des Sciences Analytiques, Université Claude Bernard Lyon 1 , Université de Lyon , UMR CNRS 5280, 69622 Villeurbanne Cedex , France
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Merzoud L, Saal A, Moussaoui R, Ouamerali O, Morell C, Chermette H. Fluorine substituent effect on the stereochemistry of catalyzed and non-catalyzed Diels–Alder reactions. The case of R-butenone with cyclopentadiene: a computational assessment of the mechanism. Phys Chem Chem Phys 2018; 20:16102-16116. [DOI: 10.1039/c8cp00985f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A semiquantitative prediction of stereoselectivity due to substitutions of dienophile is obtained.
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Affiliation(s)
- Lynda Merzoud
- Laboratory of Computational and Theoretical Chemistry and Photonics
- USTHB University
- Algeria
- Département de Chimie
- UMMTO University of Tizi–Ouzou
| | - Amar Saal
- Laboratory of Computational and Theoretical Chemistry and Photonics
- USTHB University
- Algeria
- Département de Chimie
- UMMTO University of Tizi–Ouzou
| | - Ramdane Moussaoui
- Laboratoire de Chimie Appliquée et de Génie Chimique
- Université M. Mammeri
- Tizi Ouzou
- Algeria
| | - Ourida Ouamerali
- Laboratory of Computational and Theoretical Chemistry and Photonics
- USTHB University
- Algeria
| | - Christophe Morell
- Université de Lyon
- Université Claude Bernard Lyon 1
- ENS-Lyon
- Institut des Sciences Analytiques
- 69622 Villeurbanne Cedex
| | - Henry Chermette
- Université de Lyon
- Université Claude Bernard Lyon 1
- ENS-Lyon
- Institut des Sciences Analytiques
- 69622 Villeurbanne Cedex
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