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2. 3-(4-METHYLBENZOYL)-4-HYDROXYCOUMARIN THEORETICAL STUDY, SYNTHESIS AND CHARACTERIZATION 3-(4-METHYLBENZOYL)-4-HYDROXYCOUMARINE ETUDE THEORIQUE, SYNTHESE ET CARACTERISATION

Author

SESSOUMA, Bintou, BAKOUAN, Youssoufou, Tarpaga, Lassané, Yoda, Jules, and Bayo, Karifa

Subjects
heterocycles, DFT, B3LYP, reactivity, 4-hydroxycoumarin, acylation
Abstract

This work summarizes the theoretical study of the addition reaction of 4- methylbenzoyl chloride on 4-hydroxycoumarin. Indeed, it is a question of studying thermodynamically the acylation reaction of 4-hydroxycoumarin, of carrying out the synthesis experimentally and then of characterizing the products obtained. Based on the « density functional theory » DFT calculation method with the basic standard 6–31G** and the B3LYP functionalities, we have discussed, from the thermodynamic and orbital point of view, the possibility of reactions. The theoretical results obtained are satisfactory. We therefore proceeded to the synthesis of 3-(4-methylbenzoyl)-4-hydroxycoumarin (d) in two steps via a reaction intermediate, coumarin-3-yl 4-methylbenzoate (c). The structures of the product as well as the isolated intermediate were described using the following spectral methods: infrared, 13 C and 1H nuclear magnetic resonance, and mass spectrometry, Journal Marocain de Chimie Hétérocyclique, مجلد 22, عدد 01 (2023)

Published
2023
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3. Synthèse et étude des propriétés physicochimiques d'un nouveau complexe de la phtalocyanine de zinc substitué à la périphérie : [ZnPc(CO2H)4(COATP)4].

Author

Tarpaga, Lassané, Ouédraogo, Seydou, AristideNitiema, Wend-kuny Guy, Sessouma, Bintou, Bayo-Bangoura, Mabinty, Amiens, Catherine, Esvan, Jérôme, and Bayo, Karifa

Abstract

Synthesis and characterization of a new β-octa-substituted zinc phthalocyanine complex from the [ZnPc(CO2H)8] complex are reported in this work. Compound of general formula C64H36N12O12S4Zn with good purity is obtained and confirmed by elemental analysis. The vibrational spectrometry spectra (IR and Raman) attest not only the characteristic vibration bands of phthalocyanines, but also those of functional groups located at the complex periphery. In X-ray photoelectron spectrometry (XPS), the values of the binding energies prove the presence of the sulfur of R-SH groups; which confirms the presence of the S-H bond in the reaction compound. Solid-state 13C Nuclear Magnetic Resonance Spectroscopy (13C NMR) makes possible establishment of a good correlation between the various carbons and the proposed structure. [ABSTRACT FROM AUTHOR]

Published
2023

4. 3-(4-METHYLBENZOYL)-4-HYDROXYCOUMARINE ETUDE THEORIQUE, SYNTHESE ET CARACTERISATION.

Author

SESSOUMA, Bintou, BAKOUAN, Youssoufou, Tarpaga, Lassané, Yoda, Jules, and Bayo, Karifa

Subjects
COUMARIN derivatives, ACYLATION, HETEROCYCLIC compounds, NUCLEAR magnetic resonance, MASS spectrometry
Abstract

Copyright of Moroccan Journal of Heterocyclic Chemistry is the property of University in Rabat - Morocco, Mohammed Der Mkhtar Essassi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023

5. Synthèse et étude des propriétés physicochimiques d'un nouveau complexe de la phtalocyanine de zinc substitué à la périphérie : [ZnPc(CO2H)4(COATP)4].

Author

Tarpaga, Lassané, Ouédraogo, Seydou, AristideNitiema, Wend-kuny Guy, Sessouma, Bintou, Bayo-Bangoura, Mabinty, Amiens, Catherine, Esvan, Jérôme, and Bayo, Karifa

Abstract

Copyright of Journal de la Société Ouest-Africaine de Chimie is the property of West African Chemical Society / Societe Ouest Africaine de Chimie and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023

7. 3-benzoyl-4-hydroxy-coumarine: Synthèses et caractérisation d'une série de nouveaux composés.

Author

Bakouan, Youssoufou, Sessouma, Bintou, Tarpaga, Lassané, Yoda, Jules, Djandé, Abdoulaye, and Bayo, Karifa

Abstract

Copyright of Journal de la Société Ouest-Africaine de Chimie is the property of West African Chemical Society / Societe Ouest Africaine de Chimie and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2021

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