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Adjieufack AI, Moto Ongagna J, Pouyewo Tenambo A, Opoku E, Mbouombouo IN. How a Chromium Tricarbonyl Complex Catalyzes the [3 + 2] Cycloaddition Reaction of N-Substituted Phenylnitrones with Styrene: A Molecular Electron Density Theory Analysis. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Abel Idrice Adjieufack
- Laboratory of Theoretical Chemistry (LCT) and Namur Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles, 61, Namur B-5000, Belgium
- Physical and Theoretical Chemistry Laboratory, University of Yaoundé I, P.O. Box 812, Yaoundé 00237, Cameroon
- Computational Chemistry Laboratory, High Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé 00000, Cameroon
| | - Jean Moto Ongagna
- Computational and Theoretical Chemistry Unit, Department of Chemistry, Faculty of Science, University of Douala, P.O. Box 24157, Douala 00000, Cameroon
| | - Ariane Pouyewo Tenambo
- Physical and Theoretical Chemistry Laboratory, University of Yaoundé I, P.O. Box 812, Yaoundé 00237, Cameroon
- Computational Chemistry Laboratory, High Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé 00000, Cameroon
| | - Ernest Opoku
- Department of Molecular Quantum Chemistry, Nesvard Institute of Molecular Sciences, Accra 00000, Ghana
| | - Ibrahim Ndassa Mbouombouo
- Computational Chemistry Laboratory, High Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé 00000, Cameroon
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Maraf MB, Idrice AA, Mekoung Pélagie MA, Zintchem AAA, Bebga G, Rhyman L, Ibrahim MN, Ramasami P. Decoding the reaction mechanism of the cyclocondensation of ethyl acetate2-oxo-2-(4-oxo-4H-pyrido [1.2-a] pyrimidin-3-yl) polyazaheterocycle and ethylenediamine using bond evolution theory. J Comput Chem 2022; 43:972-985. [PMID: 35383996 DOI: 10.1002/jcc.26853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 02/05/2022] [Accepted: 02/28/2022] [Indexed: 11/12/2022]
Abstract
We investigated the flow of electron density along the cyclocondensation reaction between ethyl acetate 2-oxo-2-(4-oxo-4H-pyrido[1.2-a]pyrimidin-3-yl) polyazaheterocycle (1) and ethylenediamine (2) at the ωB97XD/6-311++G(d,p)computational method within of bond evolution theory (BET). The exploration of potential energy surface shows that this reaction has three channels (1-3) with the formation of product 3 via channel-2 (the most favorable one) as the main product and this is in good agreement with experimental observations. The BET analysis allows identifying unambiguously the main chemical events happening along channel-2. The mechanism along first step (TS2-a) is described by a series of four structural stability domains (SSDs), while five SSDs for the last two steps (TS2-b and TS2-c). The first and third steps can be summarized as follows, the formation of N1-C6 bond (SSD-II), then, the restoration of the nitrogen N1 lone pair (SSD-III), and finally, the formation of the last O1-H1 bond (SSD-IV). For the second step, the formation of hydroxide ion is noted, as a result of the disappearance of V(C6,O7) basin and the transformation of C6-N1 single bond into double one (SSD-IV). Finally, the appearance of V(O7,H2) basin lead to the elimination of water molecule within the last domain is observed.
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Affiliation(s)
- Mbah Bake Maraf
- Physical and Theoretical Chemistry unit, Laboratory of applied Physical and Analytical Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon.,Computational Chemistry Laboratory, Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Adjieufack Abel Idrice
- Physical and Theoretical Chemistry unit, Laboratory of applied Physical and Analytical Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon.,Computational Chemistry Laboratory, Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, Yaoundé, Cameroon.,Laboratory of Theoretical Chemistry (LCT) and Namur Institute of Structured Matter (NISM), University of Namur, Namur, Belgium
| | - Manwal A Mekoung Pélagie
- Physical and Theoretical Chemistry unit, Laboratory of applied Physical and Analytical Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon.,Computational Chemistry Laboratory, Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Auguste Abouem A Zintchem
- Computational Chemistry Laboratory, Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Gouet Bebga
- Computational Chemistry Laboratory, Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Lydia Rhyman
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, Mauritius.,Centre for Natural Product Research, Department of Chemical Sciences, University of Johannesburg, Doornfontein, South Africa
| | - Mbouombouo Ndassa Ibrahim
- Computational Chemistry Laboratory, Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Ponnadurai Ramasami
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, Mauritius.,Centre for Natural Product Research, Department of Chemical Sciences, University of Johannesburg, Doornfontein, South Africa
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