7 recherche sur le tag 'gold'   

Gold catalysis: An homogeneous approach / F. Dean Toste

Public ISBD Titre : Gold catalysis: An homogeneous approach Type de document : texte imprimé Auteurs : F. Dean Toste, Éditeur scientifique ; Ve?ronique Michelet, Éditeur scientifique Editeur : London : Imperial College Press Année de publication : 2014 Collection : Catalytic Science Series, ISSN 1793-1398 num. 13 Importance : xvii, 545 p. ISBN/ISSN/EAN : 978-1-84816-852-7 Langues : Anglais (eng) Catégories : Catalyse Tags : HOMOGENEOUS CATALYSIS  GOLD Index. décimale : B-E Résumé : "Research on designing new catalytic systems has been one of the most important fields in modern organic chemistry. One reason for this is the predominant contribution of catalysis to the concepts of atom economy and green chemistry in the 21st century. Gold, considered catalytically inactive for a long time, is now a fascinating partner of modern chemistry, as scientists such as Bond, Teles, Haruta, Hutchings, Ito and Hayashi opened new perspectives for the whole synthetic chemist community. This book presents the major advances in homogeneous catalysis, emphasizing the methodologies that create carbon–carbon and carbon–heteroatom bonds, the applications that create diversity and synthesize natural products, and the recent advances and challenges in asymmetric catalysis and computational research. It provides readers with in-depth information about homogeneous gold-catalyzed reactions and presents several explanations for the scientific design of a catalyst. Readers will be able to understand the entire gold area and find solutions to problems in catalysis." Cote : B-E061 (SdS) Num_Inv : 3311 Gold catalysis: An homogeneous approach [texte imprimé] / F. Dean Toste, Éditeur scientifique ; Ve?ronique Michelet, Éditeur scientifique . - London : Imperial College Press, 2014 . - xvii, 545 p.. - (Catalytic Science Series, ISSN 1793-1398; 13) . ISBN : 978-1-84816-852-7 Langues : Anglais (eng) Catégories : Catalyse Tags : HOMOGENEOUS CATALYSIS  GOLD Index. décimale : B-E Résumé : "Research on designing new catalytic systems has been one of the most important fields in modern organic chemistry. One reason for this is the predominant contribution of catalysis to the concepts of atom economy and green chemistry in the 21st century. Gold, considered catalytically inactive for a long time, is now a fascinating partner of modern chemistry, as scientists such as Bond, Teles, Haruta, Hutchings, Ito and Hayashi opened new perspectives for the whole synthetic chemist community. This book presents the major advances in homogeneous catalysis, emphasizing the methodologies that create carbon–carbon and carbon–heteroatom bonds, the applications that create diversity and synthesize natural products, and the recent advances and challenges in asymmetric catalysis and computational research. It provides readers with in-depth information about homogeneous gold-catalyzed reactions and presents several explanations for the scientific design of a catalyst. Readers will be able to understand the entire gold area and find solutions to problems in catalysis." Cote : B-E061 (SdS) Num_Inv : 3311

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
3311	B-E061	Texte imprimé	Bibliothèque	Livre	Disponible

Catalysis by gold / Geoffrey C. Bond

Public ISBD Titre : Catalysis by gold Type de document : texte imprimé Auteurs : Geoffrey C. Bond ; Catherine Louis ; David T. Thompson Editeur : London : Imperial College Press Année de publication : 2006 Collection : Catalytic Science Series, ISSN 1793-1398 num. 6 Importance : 384 p. ISBN/ISSN/EAN : 978-1-86094-658-5 Langues : Anglais (eng) Tags : GOLD  CATALYSIS  METAL CATALYSTS Index. décimale : EQ -Equipe- Résumé : "Gold has traditionally been regarded as inactive as a catalytic metal. However, the advent of nanoparticulate gold on high surface area oxide supports has demonstrated its high catalytic activity in many chemical reactions. Gold is active as a heterogeneous catalyst in both gas and liquid phases, and complexes catalyse reactions homogeneously in solution. Many of the reactions being studied will lead to new application areas for catalysis by gold in pollution control, chemical processing, sensors and fuel cell technology. This book describes the properties of gold, the methods for preparing gold catalysts and ways to characterise and use them effectively in reactions. The reaction mechanisms and reasons for the high activities are discussed and the applications for gold catalysis considered." Cote : LCC/L Num_Inv : 2890 Catalysis by gold [texte imprimé] / Geoffrey C. Bond ; Catherine Louis ; David T. Thompson . - London : Imperial College Press, 2006 . - 384 p.. - (Catalytic Science Series, ISSN 1793-1398; 6) . ISBN : 978-1-86094-658-5 Langues : Anglais (eng) Tags : GOLD  CATALYSIS  METAL CATALYSTS Index. décimale : EQ -Equipe- Résumé : "Gold has traditionally been regarded as inactive as a catalytic metal. However, the advent of nanoparticulate gold on high surface area oxide supports has demonstrated its high catalytic activity in many chemical reactions. Gold is active as a heterogeneous catalyst in both gas and liquid phases, and complexes catalyse reactions homogeneously in solution. Many of the reactions being studied will lead to new application areas for catalysis by gold in pollution control, chemical processing, sensors and fuel cell technology. This book describes the properties of gold, the methods for preparing gold catalysts and ways to characterise and use them effectively in reactions. The reaction mechanisms and reasons for the high activities are discussed and the applications for gold catalysis considered." Cote : LCC/L Num_Inv : 2890

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
2890	LCC/L	Texte imprimé	Equipe	Livre	Equipe - Demande préalable Disponible

Modern gold catalyzed synthesis / A. Stephen K. Hashmi

Public ISBD Titre : Modern gold catalyzed synthesis Type de document : texte imprimé Auteurs : A. Stephen K. Hashmi, Éditeur scientifique ; F. Dean Toste, Éditeur scientifique Editeur : Weinheim : Wiley-VCH Année de publication : 2012 Importance : xv, 402 p. Présentation : ill., couv. ill. en coul. Format : 25 cm ISBN/ISSN/EAN : 978-3-527-31952-7 Langues : Anglais (eng) Catégories : Catalyse Tags : CATALYSIS  TRANSITION METAL CALALYSTS  ORGANIC COMPOUNDS-Synthesis  GOLD Index. décimale : B-E Résumé : "With its impressive features, gold has led to completely new reaction types in recent years, which in turn have strongly influenced both organic catalysis and material science. Other fields where a significant amount of new results has been obtained include nanotechnology,self assembly/supramolecular systems and biochemical/medicinal chemistry. As a result, gold is one of the hottest topics in catalysis at the moment, with an increasing amount of research being carried out in this field. While focusing on homogeneous catalysis, this monograph also covers the main applications in heterogeneous catalysis. Following a look at the gold-catalyzed addition of heteroatom nucleophiles to alkynes, it goes on to discuss gold-catalyzed additions to allenes and alkenes, gold-catalyzed benzannulations, cycloisomerization and rearrangement reactions, as well as oxidation and reduction reactions. The whole is finished off with a section on gold-catalyzed aldol and related reactions and the application of gold-catalyzed reactions to natural product synthesis. Of interest to synthetic chemists and inorganic chemists, as well as organic chemists working in homogeneous catalysis, physical and technical chemists." Cote : B-E055 (SdS) Num_Inv : 3286 Modern gold catalyzed synthesis [texte imprimé] / A. Stephen K. Hashmi, Éditeur scientifique ; F. Dean Toste, Éditeur scientifique . - Weinheim : Wiley-VCH, 2012 . - xv, 402 p. : ill., couv. ill. en coul. ; 25 cm. ISBN : 978-3-527-31952-7 Langues : Anglais (eng) Catégories : Catalyse Tags : CATALYSIS  TRANSITION METAL CALALYSTS  ORGANIC COMPOUNDS-Synthesis  GOLD Index. décimale : B-E Résumé : "With its impressive features, gold has led to completely new reaction types in recent years, which in turn have strongly influenced both organic catalysis and material science. Other fields where a significant amount of new results has been obtained include nanotechnology,self assembly/supramolecular systems and biochemical/medicinal chemistry. As a result, gold is one of the hottest topics in catalysis at the moment, with an increasing amount of research being carried out in this field. While focusing on homogeneous catalysis, this monograph also covers the main applications in heterogeneous catalysis. Following a look at the gold-catalyzed addition of heteroatom nucleophiles to alkynes, it goes on to discuss gold-catalyzed additions to allenes and alkenes, gold-catalyzed benzannulations, cycloisomerization and rearrangement reactions, as well as oxidation and reduction reactions. The whole is finished off with a section on gold-catalyzed aldol and related reactions and the application of gold-catalyzed reactions to natural product synthesis. Of interest to synthetic chemists and inorganic chemists, as well as organic chemists working in homogeneous catalysis, physical and technical chemists." Cote : B-E055 (SdS) Num_Inv : 3286

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
3286	B-E055	Texte imprimé	Bibliothèque	Livre	Disponible

Platinum, gold and other metal chemotherapeutic agents / Stephen J. Lippard

Public ISBD Titre : Platinum, gold and other metal chemotherapeutic agents Type de document : texte imprimé Auteurs : Stephen J. Lippard, Auteur Editeur : Washington : American Chemical Society Année de publication : 1983 Collection : ACS Symposium Series, ISSN 0097-6156 num. 209 Importance : 453 p. ISBN/ISSN/EAN : 978-0-8412-0758-5 Langues : Anglais (eng) Catégories : Biochimie Tags : GOLD  METALS-THERAPEUTICS Index. décimale : B-F Cote : B-F059 Num_Inv : 614 Localisation : LCC (SdS) Platinum, gold and other metal chemotherapeutic agents [texte imprimé] / Stephen J. Lippard, Auteur . - Washington : American Chemical Society, 1983 . - 453 p.. - (ACS Symposium Series, ISSN 0097-6156; 209) . ISBN : 978-0-8412-0758-5 Langues : Anglais (eng) Catégories : Biochimie Tags : GOLD  METALS-THERAPEUTICS Index. décimale : B-F Cote : B-F059 Num_Inv : 614 Localisation : LCC (SdS)

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
614	B-F059	Texte imprimé	Bibliothèque	Livre	Disponible

Cycloisomerisation of enynes catalyzed by rhodium complexes / Ariadna Fuente-Hernandez  

Public ISBD Titre : Cycloisomerisation of enynes catalyzed by rhodium complexes Type de document : texte imprimé Auteurs : Ariadna Fuente-Hernandez, Auteur ; Urrutigoïty, Martine, Directeur de thèse ; Jauregui-Haza, Ulises, Directeur de thèse Année de publication : 2010 Langues : Espagnol (spa) Tags : MONOTERPENES  CYCLOISOMERIZATION  RHODIUM  PLATINUM  GOLD  IONIC LIQUID MONOTERPENOS  ENINAS  CICLOISOMERIZACION  RODIO  PLATINO  ORO  LIQUIDO IONICO Résumé : "The transition metals catalyzed cycloisomerization reactions of enynes are a powerful tool in organic synthesis: they give access, in only one atom-economic step, to a variety of interesting mono- or bicyclic structures, comprising 1,4-diene, 1,3-diene, cyclobutene or cyclopropane moieties. In order to reach new molecules derived from monoterpenes, O-tethered 1,6- and 1,7- enynes were prepared starting from perillyl alcohol, nerol and isopulegol, and their reactivity in cycloisomerization reactions catalyzed by transition metals salts or complexes was studied. New bi- and tricyclic molecules containing cyclopropane, 1,3- or 1,4-dienes moieties were thus synthesized. All these molecules were purified and characterized by NMR techniques. Various catalytic systems described in the literature were compared: PtCl2, AuCl3, [AuCl(PPh3)/AgPF6] and Rh2Cl2(CO)4. We thus could show that the nature of the final product depended especially on the starting enyne structure but also on concerned catalyst. Moreover we highlighted that kinetics and selectivity could be modified under CO atmosphere. Analogously, an asymmetrical version of the reaction was explored in the case of the 1,6-enyne derived from perillyl alcohol by preparing platinum or gold complexes with chiral phosphorated ligands. The observed diastereoisomeric excess on two obtained cyclopropanes thus could be increased in the case of gold (I) complexes, but the values remain still modest. Finally, we undertook a preliminary study of the cycloisomerization reaction in ionic liquid with an aim of conceiving an effective system for catalyst recycling. Various ionic liquids and different extraction solvents were tested for 1,6-enyne derived from perillyl alcohol. The activity and the selectivity of various catalysts proved, resulted modified compared to the reaction in toluene and reproducibility problems appeared. This study will have to be continued in order to optimize the conditions of reaction and the catalysts recycling." "Las reacciones de cicloisomerización de eninas catalizadas por metales de transición constituyen una poderosa herramienta en síntesis orgánica: ellas ofrecen acceso, en una sola etapa átomoeconómica,a una variedad de estructuras interesantes mono- o bicíclicas que contienen funciones 1,4-dieno, 1,3-dieno, ciclobuteno o ciclopropano. Con la finalidad de acceder a nuevas moléculas derivadas de monoterpenos, se prepararon 1,6- y 1,7-eninas oxigenadas a partir del alcohol perílico, el nerol y el isopulegol, y se estudió su reactividad en la reacción de cicloisomerización catalizada por sales o complejos de metales de transición. A partir de ello, se sintetizaron nuevas moléculas bi- y tricíclicas con funciones ciclopropano, 1,3- o 1,4-dienos. Todas las estructuras fueron purificadas y caracterizadas por técnicas de RMN. Se compararon diferentes sistemas catalíticos descritos en la literatura: PtCl2, AuCl3, [AuCl(PPh3)/AgPF6] y Rh2Cl2(CO)4. Se demuestra que la naturaleza del producto de la reacción depende, sobre todo, de la estructura de la enina de partida, pero también del catalizador empleado. Además, se pone en evidencia que la cinética y la selectividad pueden ser modificadas cuando se realiza la reacción en atmósfera de CO. De forma análoga, se estudió una versión asimétrica de la reacción de cicloisomerización en el caso de la 1,6-enina derivada del alcohol perílico, a través de la obtención de complejos de platino u oro con ligandos fosforados quirales. El exceso diastereoisomérico observado para los derivados de tipo ciclopropano obtenidos puede aumentarse con el empleo de los complejos de oro (I), pero solo de forma modesta. Finalmente, se realiza un estudio preliminar de la reacción de cicloisomerización de la 1,6-enina derivada del alcohol perílico en líquido iónico, con el objetivo de obtener un sistema eficaz para reciclar el catalizador. Se probaron diferentes líquidos iónicos y distintos disolventes de extracción. La actividad y la selectividad de los diferentes catalizadores se ven modificadas con respecto a la reacción en tolueno y aparecen problemas de reproducibilidad. Este estudio deberá continuarse con vistas a optimizar las condiciones de reacción y los reciclajes." Document : Thèse de Doctorat Etablissement_delivrance : Institut National Polytechnique de Toulouse - INPT et Universidad de La Habana (Cuba) Date_soutenance : 16/04/2010 Ecole_doctorale : Sciences de la Matière (SdM) (Toulouse) Domaine : Chimie organique et Catalyse Localisation : LCC En ligne : https://theses.hal.science/tel-04272253 Cycloisomerisation of enynes catalyzed by rhodium complexes [texte imprimé] / Ariadna Fuente-Hernandez, Auteur ; Urrutigoïty, Martine, Directeur de thèse ; Jauregui-Haza, Ulises, Directeur de thèse . - 2010. Langues : Espagnol (spa) Tags : MONOTERPENES  CYCLOISOMERIZATION  RHODIUM  PLATINUM  GOLD  IONIC LIQUID MONOTERPENOS  ENINAS  CICLOISOMERIZACION  RODIO  PLATINO  ORO  LIQUIDO IONICO Résumé : "The transition metals catalyzed cycloisomerization reactions of enynes are a powerful tool in organic synthesis: they give access, in only one atom-economic step, to a variety of interesting mono- or bicyclic structures, comprising 1,4-diene, 1,3-diene, cyclobutene or cyclopropane moieties. In order to reach new molecules derived from monoterpenes, O-tethered 1,6- and 1,7- enynes were prepared starting from perillyl alcohol, nerol and isopulegol, and their reactivity in cycloisomerization reactions catalyzed by transition metals salts or complexes was studied. New bi- and tricyclic molecules containing cyclopropane, 1,3- or 1,4-dienes moieties were thus synthesized. All these molecules were purified and characterized by NMR techniques. Various catalytic systems described in the literature were compared: PtCl2, AuCl3, [AuCl(PPh3)/AgPF6] and Rh2Cl2(CO)4. We thus could show that the nature of the final product depended especially on the starting enyne structure but also on concerned catalyst. Moreover we highlighted that kinetics and selectivity could be modified under CO atmosphere. Analogously, an asymmetrical version of the reaction was explored in the case of the 1,6-enyne derived from perillyl alcohol by preparing platinum or gold complexes with chiral phosphorated ligands. The observed diastereoisomeric excess on two obtained cyclopropanes thus could be increased in the case of gold (I) complexes, but the values remain still modest. Finally, we undertook a preliminary study of the cycloisomerization reaction in ionic liquid with an aim of conceiving an effective system for catalyst recycling. Various ionic liquids and different extraction solvents were tested for 1,6-enyne derived from perillyl alcohol. The activity and the selectivity of various catalysts proved, resulted modified compared to the reaction in toluene and reproducibility problems appeared. This study will have to be continued in order to optimize the conditions of reaction and the catalysts recycling." "Las reacciones de cicloisomerización de eninas catalizadas por metales de transición constituyen una poderosa herramienta en síntesis orgánica: ellas ofrecen acceso, en una sola etapa átomoeconómica,a una variedad de estructuras interesantes mono- o bicíclicas que contienen funciones 1,4-dieno, 1,3-dieno, ciclobuteno o ciclopropano. Con la finalidad de acceder a nuevas moléculas derivadas de monoterpenos, se prepararon 1,6- y 1,7-eninas oxigenadas a partir del alcohol perílico, el nerol y el isopulegol, y se estudió su reactividad en la reacción de cicloisomerización catalizada por sales o complejos de metales de transición. A partir de ello, se sintetizaron nuevas moléculas bi- y tricíclicas con funciones ciclopropano, 1,3- o 1,4-dienos. Todas las estructuras fueron purificadas y caracterizadas por técnicas de RMN. Se compararon diferentes sistemas catalíticos descritos en la literatura: PtCl2, AuCl3, [AuCl(PPh3)/AgPF6] y Rh2Cl2(CO)4. Se demuestra que la naturaleza del producto de la reacción depende, sobre todo, de la estructura de la enina de partida, pero también del catalizador empleado. Además, se pone en evidencia que la cinética y la selectividad pueden ser modificadas cuando se realiza la reacción en atmósfera de CO. De forma análoga, se estudió una versión asimétrica de la reacción de cicloisomerización en el caso de la 1,6-enina derivada del alcohol perílico, a través de la obtención de complejos de platino u oro con ligandos fosforados quirales. El exceso diastereoisomérico observado para los derivados de tipo ciclopropano obtenidos puede aumentarse con el empleo de los complejos de oro (I), pero solo de forma modesta. Finalmente, se realiza un estudio preliminar de la reacción de cicloisomerización de la 1,6-enina derivada del alcohol perílico en líquido iónico, con el objetivo de obtener un sistema eficaz para reciclar el catalizador. Se probaron diferentes líquidos iónicos y distintos disolventes de extracción. La actividad y la selectividad de los diferentes catalizadores se ven modificadas con respecto a la reacción en tolueno y aparecen problemas de reproducibilidad. Este estudio deberá continuarse con vistas a optimizar las condiciones de reacción y los reciclajes." Document : Thèse de Doctorat Etablissement_delivrance : Institut National Polytechnique de Toulouse - INPT et Universidad de La Habana (Cuba) Date_soutenance : 16/04/2010 Ecole_doctorale : Sciences de la Matière (SdM) (Toulouse) Domaine : Chimie organique et Catalyse Localisation : LCC En ligne : https://theses.hal.science/tel-04272253