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Partager le résultat de cette recherche Interroger des sources externesÉlaboration de nouvelles voies catalytiques dans la synthese de molécules hétérocycliques / Faiza Boukezzoula
Titre : Élaboration de nouvelles voies catalytiques dans la synthese de molécules hétérocycliques Type de document : texte imprimé Auteurs : Faiza Boukezzoula, Auteur ; Taoues Boumoud, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 196 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : hétérocycles synthèse convergente réactions à composants multiples catalyse
organique molécules chirales et achirales synthèse asymétrique liquides ioniques pyrazolopyranopyrimidines pyranopyrazoles spirooxindoles heterocyclic compounds convergent strategy MCRs Organocatalysis asymmetrical and symmetrical molecules asymmetric synthesis ionic liquids ???????? ??????? ????? ??????? ????????? ????????? ???????? ?????????? ???????? ??????? ???????? ????????? ?????????? ??????? ???????? ??????????????????????? ????????????? ?????? ???????Index. décimale : 540 Chimie et sciences connexes Résumé : The subject that we developed "Elaboration of novel catalytic methods for the synthesis of
heterocyclic molecules " summarizes:
- Through a bibliographical study which puts forward the heterocyclic compounds, the advantage of the reactions making their synthesis possible, in occurrence MCRs and the privilege of organic catalysis.
- Through a study of the catalytic properties of two molecules asymmetrical (DMAP and DABCO) and two symmetrical (L-Proline and Cinchonine) with respect to the synthesis of
pyrazolpyrnopyrimidindiones/ones and pyranopyrazoles, via multicomponent reactions
- Through a study of catalytic properties of two ionic liquids [MePPh3][Br] and [OPPh3][Br] in the synthesis of the spirooxindoles and the pyranopyrazoles. The results with [OPPh3][Br] are not as good as those obtained with [MePPh3][Br], which certainly due to its cumbersome properties.
- This study reinforced the idea of the organic catalysis in MCRs giving the
pyrazolopyranopyrimidindiones/ones the pyranopyrazoles and the spirooxindoles
heterocyclic compoundsDiplôme : Doctorat En ligne : ../theses/chimie/BOU6898.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10228 Élaboration de nouvelles voies catalytiques dans la synthese de molécules hétérocycliques [texte imprimé] / Faiza Boukezzoula, Auteur ; Taoues Boumoud, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 196 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : hétérocycles synthèse convergente réactions à composants multiples catalyse
organique molécules chirales et achirales synthèse asymétrique liquides ioniques pyrazolopyranopyrimidines pyranopyrazoles spirooxindoles heterocyclic compounds convergent strategy MCRs Organocatalysis asymmetrical and symmetrical molecules asymmetric synthesis ionic liquids ???????? ??????? ????? ??????? ????????? ????????? ???????? ?????????? ???????? ??????? ???????? ????????? ?????????? ??????? ???????? ??????????????????????? ????????????? ?????? ???????Index. décimale : 540 Chimie et sciences connexes Résumé : The subject that we developed "Elaboration of novel catalytic methods for the synthesis of
heterocyclic molecules " summarizes:
- Through a bibliographical study which puts forward the heterocyclic compounds, the advantage of the reactions making their synthesis possible, in occurrence MCRs and the privilege of organic catalysis.
- Through a study of the catalytic properties of two molecules asymmetrical (DMAP and DABCO) and two symmetrical (L-Proline and Cinchonine) with respect to the synthesis of
pyrazolpyrnopyrimidindiones/ones and pyranopyrazoles, via multicomponent reactions
- Through a study of catalytic properties of two ionic liquids [MePPh3][Br] and [OPPh3][Br] in the synthesis of the spirooxindoles and the pyranopyrazoles. The results with [OPPh3][Br] are not as good as those obtained with [MePPh3][Br], which certainly due to its cumbersome properties.
- This study reinforced the idea of the organic catalysis in MCRs giving the
pyrazolopyranopyrimidindiones/ones the pyranopyrazoles and the spirooxindoles
heterocyclic compoundsDiplôme : Doctorat En ligne : ../theses/chimie/BOU6898.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10228 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/6898 BOU/6898 Thèse Bibliothèque principale Thèses Disponible
Titre : Étude de modulation du pouvoir catalytique de certains acides de Lewis(les nitrates) et développement de nouvelles voies catalytique Type de document : texte imprimé Auteurs : Amina Debbache, Auteur ; Boudjemaa Boumoud, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2015 Importance : 128 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : le pouvoir catalytique acide de Lewis acide de Bronsted la triphényl phosphine action du nucléophile les liquides ionique réactions à composants multiples the catalytic effect Lewis acids Bronsted acids triphenylphosphine ionic liquids multicomponent reactions ????? ????????? ??? ???? ??? ???????? ????? ????? ???????? ??????? ???????? ?????????
???????? ????????Index. décimale : 540 Chimie et sciences connexes Résumé : The objective of our work was the study of the catalytic effect of three catalysts bearing different properties on one-pot Biginelli and Biginelli-like reactions:
- With metal- nitrate as catalysts, we have demonstrated that it is the property of Bronsted acids, obtained by transformation of Lewis acids in aqueous media, which expressed the catalytic power.
- With a basic catalysis by triphenylphosphine, the latter expessed its nucleophilic power rather than its basic properties and we have demonstrated that it is the base formed in situ by the nucleophilic action which initiated the basic catalysis.
- With the ionic liquids, the activation of the reaction is observed through the synergy of the cocktail of their properties.
Diplôme : Doctorat En ligne : ../theses/chimie/BEN6574.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9849 Étude de modulation du pouvoir catalytique de certains acides de Lewis(les nitrates) et développement de nouvelles voies catalytique [texte imprimé] / Amina Debbache, Auteur ; Boudjemaa Boumoud, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2015 . - 128 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : le pouvoir catalytique acide de Lewis acide de Bronsted la triphényl phosphine action du nucléophile les liquides ionique réactions à composants multiples the catalytic effect Lewis acids Bronsted acids triphenylphosphine ionic liquids multicomponent reactions ????? ????????? ??? ???? ??? ???????? ????? ????? ???????? ??????? ???????? ?????????
???????? ????????Index. décimale : 540 Chimie et sciences connexes Résumé : The objective of our work was the study of the catalytic effect of three catalysts bearing different properties on one-pot Biginelli and Biginelli-like reactions:
- With metal- nitrate as catalysts, we have demonstrated that it is the property of Bronsted acids, obtained by transformation of Lewis acids in aqueous media, which expressed the catalytic power.
- With a basic catalysis by triphenylphosphine, the latter expessed its nucleophilic power rather than its basic properties and we have demonstrated that it is the base formed in situ by the nucleophilic action which initiated the basic catalysis.
- With the ionic liquids, the activation of the reaction is observed through the synergy of the cocktail of their properties.
Diplôme : Doctorat En ligne : ../theses/chimie/BEN6574.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9849 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité DEB/6764 DEB/6764 Thèse Bibliothèque principale Thèses Disponible
Titre : Synthèse et caractérisation de poly-hétérocycles bioactifs Type de document : texte imprimé Auteurs : Chamseddine Derabli, Auteur ; Raouf Boulcina, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 217 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Quinolones cyclisation d’aza-Michael liquides ioniques quinazolines quinazolinones quinoléines pyranopyrazoles pyrimidines Tacrine Maladie d’Alzheimer aza-Michael cyclization ionic liquids quinolines Alzheimer's disease ??????????? ???? ???-??????? ?????? ??????? ????????????? ??????? ????????? ?????? ???
??????????Index. décimale : 540 Chimie et sciences connexes Résumé : This manuscript includes three main parts:
In the first chapter, we described a new method for preparation of 2-aryl-2,3-dihydro-4-quinolonesby the use of the cyclization of the corresponding 2-aminochalconesvia an azaMichael reaction. This method was catalyzed by a DABCO’s ionic liquid which allowed us to obtain quantitatively our intended products in a single step.
In the second chapter, we synthesized a series of new 1,2-dihydroquinazoline derivatives by a one pot reaction, from benzaldehyde derivatives, ammonium acetate and 2-aminobenzophenones in the presence of DMAP. Similarly, we described the synthesis of new hybrid quinazoline-quinoline compounds from raw materials and other easily accessible key intermediates.
Finally, the study that we have undertaken in this final chapter of the thesis has as main objective, the preparation of novel heterocyclic analogues of Tacrine (used in the treatment of Alzheimer's disease) based pyranopyrazole and pyrimidine structures.
Diplôme : Doctorat Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10221 Synthèse et caractérisation de poly-hétérocycles bioactifs [texte imprimé] / Chamseddine Derabli, Auteur ; Raouf Boulcina, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 217 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Quinolones cyclisation d’aza-Michael liquides ioniques quinazolines quinazolinones quinoléines pyranopyrazoles pyrimidines Tacrine Maladie d’Alzheimer aza-Michael cyclization ionic liquids quinolines Alzheimer's disease ??????????? ???? ???-??????? ?????? ??????? ????????????? ??????? ????????? ?????? ???
??????????Index. décimale : 540 Chimie et sciences connexes Résumé : This manuscript includes three main parts:
In the first chapter, we described a new method for preparation of 2-aryl-2,3-dihydro-4-quinolonesby the use of the cyclization of the corresponding 2-aminochalconesvia an azaMichael reaction. This method was catalyzed by a DABCO’s ionic liquid which allowed us to obtain quantitatively our intended products in a single step.
In the second chapter, we synthesized a series of new 1,2-dihydroquinazoline derivatives by a one pot reaction, from benzaldehyde derivatives, ammonium acetate and 2-aminobenzophenones in the presence of DMAP. Similarly, we described the synthesis of new hybrid quinazoline-quinoline compounds from raw materials and other easily accessible key intermediates.
Finally, the study that we have undertaken in this final chapter of the thesis has as main objective, the preparation of novel heterocyclic analogues of Tacrine (used in the treatment of Alzheimer's disease) based pyranopyrazole and pyrimidine structures.
Diplôme : Doctorat Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10221 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité DER/6892 DER/6892 Thèse Bibliothèque principale Thèses Disponible
Titre : Élaboration d’adsorbants de métaux à base de matériaux aluminosilicatés poreux fonctionnalisés et leur application à la potabilisation des eaux Type de document : texte imprimé Auteurs : Smail Terchi, Auteur ; Brahim Kebabi, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 152 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : manganèse adsorption vermiculite bord de feuillet échange sonification argile greffage liquides ionique manganese layer edge exchange clay grafting ionic liquids ???????? ????????? ???? ?????? ????? ??????? ???????
????????Index. décimale : 540 Chimie et sciences connexes Résumé : In this study we used the thermally exfoliated vermiculite to remove manganese in aqueous solution. The adsorption mechanism of manganese nitrate on this clay was studied by analysis of the isotherms of the cations exchanged from the vermiculite (K+ and Ca2+) and the ions (NO3- and Mn2+) adsorbed on the vermiculite. The kinetic of adsorption of the Mn2+ ions on vermiculite was found of pseudo-second-order type with a constant rate of 0,170 g.mg-1.min-1. The adsorption temperature dependence between 25 °C and 45 °C has demonstrated an endothermic and spontaneous dsorption.
The amount of exchanged Mn2+ ions in equivalent per gram represents only 17% of the total adsorbed uptake. 83% of the Mn2+ and NO3- ions have been adsorbed at the edges of the layers. The milling of the vermiculite has involved a decrease in the grains size and thus an increase in the edge layer adsorption site content allowing an increase of 19 % of the maximum adsorption uptake compared to raw vermiculite. The milled vermiculite was more grinded by sonication at 20 kHz.
Increasing of sonication time, presence of H2O2, and the increase of the vermiculite concentration have caused an accentuation of sonication effect, this resulted the decreasing of the size to 8 µm.
Moreover, a 2% fraction of submicron-sized particles was appeared. The pH of the vermiculite suspensions was increased. The number of the -OH sites was determined by acid-base titration using Gran method was also increased. The infrared spectra of the raw and sonicated vermiculites in H2O or containing H2O2 were very similar. XRD spectra showed that the sonication did not affect the vermiculite structure. The sonication leads to increase the maximum uptake by 31 %. The linear variation of the Mn2+ adsorption capacity with respect to the sum of the estimated geometric perimeter of the sonicated particles (assuming square shaped particles) confirms an adsorption
process at the edge of layers. The sonicated sample during 5 h in H2O2 has been grafted with butylimidazolium. This was realized in two steps. In the first step, we grafted 3-chloropropyltrimethoxysilane instead of the –OH sites. In the second step, we conducted a nucleophilic substitution of chlorine with methyl-imidazole. Infrared spectroscopy shows that grafting was real and XRD that this was not an intercalationDiplôme : Doctorat en sciences En ligne : ../theses/chimie/TER7150.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10453 Élaboration d’adsorbants de métaux à base de matériaux aluminosilicatés poreux fonctionnalisés et leur application à la potabilisation des eaux [texte imprimé] / Smail Terchi, Auteur ; Brahim Kebabi, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 152 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : manganèse adsorption vermiculite bord de feuillet échange sonification argile greffage liquides ionique manganese layer edge exchange clay grafting ionic liquids ???????? ????????? ???? ?????? ????? ??????? ???????
????????Index. décimale : 540 Chimie et sciences connexes Résumé : In this study we used the thermally exfoliated vermiculite to remove manganese in aqueous solution. The adsorption mechanism of manganese nitrate on this clay was studied by analysis of the isotherms of the cations exchanged from the vermiculite (K+ and Ca2+) and the ions (NO3- and Mn2+) adsorbed on the vermiculite. The kinetic of adsorption of the Mn2+ ions on vermiculite was found of pseudo-second-order type with a constant rate of 0,170 g.mg-1.min-1. The adsorption temperature dependence between 25 °C and 45 °C has demonstrated an endothermic and spontaneous dsorption.
The amount of exchanged Mn2+ ions in equivalent per gram represents only 17% of the total adsorbed uptake. 83% of the Mn2+ and NO3- ions have been adsorbed at the edges of the layers. The milling of the vermiculite has involved a decrease in the grains size and thus an increase in the edge layer adsorption site content allowing an increase of 19 % of the maximum adsorption uptake compared to raw vermiculite. The milled vermiculite was more grinded by sonication at 20 kHz.
Increasing of sonication time, presence of H2O2, and the increase of the vermiculite concentration have caused an accentuation of sonication effect, this resulted the decreasing of the size to 8 µm.
Moreover, a 2% fraction of submicron-sized particles was appeared. The pH of the vermiculite suspensions was increased. The number of the -OH sites was determined by acid-base titration using Gran method was also increased. The infrared spectra of the raw and sonicated vermiculites in H2O or containing H2O2 were very similar. XRD spectra showed that the sonication did not affect the vermiculite structure. The sonication leads to increase the maximum uptake by 31 %. The linear variation of the Mn2+ adsorption capacity with respect to the sum of the estimated geometric perimeter of the sonicated particles (assuming square shaped particles) confirms an adsorption
process at the edge of layers. The sonicated sample during 5 h in H2O2 has been grafted with butylimidazolium. This was realized in two steps. In the first step, we grafted 3-chloropropyltrimethoxysilane instead of the –OH sites. In the second step, we conducted a nucleophilic substitution of chlorine with methyl-imidazole. Infrared spectroscopy shows that grafting was real and XRD that this was not an intercalationDiplôme : Doctorat en sciences En ligne : ../theses/chimie/TER7150.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10453 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité TER/7150 TER/7150 Thèse Bibliothèque principale Thèses Disponible
