Homogeneous Gold Catalysis
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Gold Catalysis An Homogeneous Approach
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Author : Veronique Michelet
language : en
Publisher: World Scientific
Release Date : 2014-06-20
Gold Catalysis An Homogeneous Approach written by Veronique Michelet and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-20 with Science categories.
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.Gold Catalysis — An Homogeneous Approach is part of the Catalytic Science Series and features prominent authors who are experts in their respective fields.
Homogeneous Gold Catalysis
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Author : LeGrande M. Slaughter
language : en
Publisher: Springer
Release Date : 2015-03-30
Homogeneous Gold Catalysis written by LeGrande M. Slaughter and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-30 with Science categories.
The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students.
Gold Catalysis
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Author : F. Dean Toste
language : en
Publisher:
Release Date : 2014-08-01
Gold Catalysis written by F. Dean Toste and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-08-01 with Catalysis categories.
Research on designing new catalytic systems has been one of the most important fields in modern organic chemistry, and 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, 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. The Handbook of Homogeneous Gold Catalysis provides readers with in-depth information about 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. Featuring prominent authors, who are experts in their respective fields, this is the first book dedicated to homogeneous gold chemistry. Contents: From Gold in Nature to Gold Catalysts (S Kramer and F Gagosz); Oxidation and Reduction Reactions (L Zhang); Gold-Catalyzed Addition of Carbon Nucleophile to C-C Multiple Bond (B Simmons and H C Shen); Gold-Catalyzed Addition of Heteroatom Nucleophile to C-C Multiple Bond (N Asao, N Hatakeyama and Y Yamamoto); Gold-Catalyzed Synthesis of Heterocycles (A Arcadi); Multi-Component Reactions (R Skouta and C J Li); Gold Catalyzed Tandem and Cascade Reactions (R-S Liu); Cycloisomerization Reactions of 1, n -Enynes (N Huguet and A Echavarren); Gold-Catalyzed Reaction of Propargylic Esters (L Fensterbank, J-P Goddard, M Malacria and S Simonneau); Gold-Catalyzed Cross-Coupling Reactions (S Blum); Gold-Catalyzed Reactions: A Computational Approach (E Soriano & J Marco-Contelles); Asymmetric Gold-Catalyzed Reactions (P Y Toullec, A Pradal and V Michelet); Gold Catalysis in Natural Product Synthesis (M Gesinski and F D Toste). Readership: Student, professionals.
Homogeneous Gold Catalysis
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Author : Lise Molinari
language : en
Publisher:
Release Date : 2013
Homogeneous Gold Catalysis written by Lise Molinari and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Homogeneous Gold Catalysis
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Author : Yanzhao Wang
language : en
Publisher:
Release Date : 2014
Homogeneous Gold Catalysis written by Yanzhao Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
In the past dozen years, great progress has been made in developing highly efficient homogenous gold catalysis. As soft "pi" Lewis acids, cationic gold(I) complexes are particularly powerful in terms of activating alkyne/allene towards nucleophilic attack, leading to a variety of synthetically versatile structures. During my research, several synthetic methods have been developed, including: (1) Au-catalyzed ligand-directed anti nucleophilic attack of alkynes; the new ligands I developed enable highly efficient gold-catalyzed nucleophilic addition of acids, anilines and water to the alkynes; and catalyst loadings could be lowered to 10 parts per million; (2) rapid access of chroman-3-ones via gold-catalyzed oxidation of propargyl aryl ethers; this step-economic and efficient transformation was realized by a bulky gold catalyst, Me4tBuXPhosAuNTf2 and bulky electron-deficient pyridine N-oxides derived from Hantzsch esters; (3) Au-catalyzed novel indole synthesis via a key [3,3] sigmatropic rearrangement; 2-alkylindoles were produced with high regioselectivity and efficiency from easily accessed N-arylhydroxylamines under mild conditions; an improved approach involved cooperative dual catalysis of Zn and Au was developed; much broader substrate scope, shorter reaction time and good to excellent yields were achieved.
Synthetic And Mechanistic Prospects Of Homogeneous Gold Catalysis
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Author : Sreekumar Pankajakshan
language : en
Publisher:
Release Date : 2009
Synthetic And Mechanistic Prospects Of Homogeneous Gold Catalysis written by Sreekumar Pankajakshan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Mechanistic Insights And Functionalization Of Alkynes In Homogeneous Gold Catalysis
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Author : Manish Kumar
language : en
Publisher:
Release Date : 2014
Mechanistic Insights And Functionalization Of Alkynes In Homogeneous Gold Catalysis written by Manish Kumar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Catalysts categories.
The focus of my dissertation work was to study the basic mechanistic insights of gold-catalyzed reactions. Although the various mechanistic pathways of gold catalysis are better understood nowadays, numerous questions still remain unanswered concerning the nature of deactivation of the catalyst's active species, high resistance towards protodeauration, and how we can solve these problems to improve the efficiency of gold catalysis. To address these challenges in gold catalysis we conducted first a detailed experimental study to understand the mechanism of deactivation of gold active species. Based on the combination of experimental data, we proposed that gold disproportionation is preferred as compared to reduction of the active gold catalyst. To address the high resistance toward protodeauration, we explored a new strategy to enhance the efficacy of gold-catalyzed reactions through hydrogen-bonding assisted protodeauration using additives chosen for their pKBHX (hydrogen-bond basicity). To address the threshold phenomenon, we observed that high gold affinity impurities (halides, bases) in solvents, starting materials, filtration or drying agents could affect the reactivity of the gold catalyst adversely, which, in turn, may significantly reduce the TON of cationic gold. Use of a suitable acid activator (e.g. HOTf, In(OTf)3) reactivates the gold catalyst and makes the reaction proceed smoothly at low gold catalyst loading. To explore the reactivity of Au catalysts towards oxygen-atom transfer reactions, we investigated the gold-catalyzed addition of O-nucleophiles to alkynes and found that this reaction can produce synthetically important vinyl ether products in excellent yields and regioselectivities at room temperature. At higher temperature, 3,3-sigmatropic rearrangement of vinyl ether products gives access to highly functionalized benzotriazoles.
Stabilized Cationic Reaction Intermediates In Homogeneous Gold Catalysis
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Author : David Joel Gorin
language : en
Publisher:
Release Date : 2008
Stabilized Cationic Reaction Intermediates In Homogeneous Gold Catalysis written by David Joel Gorin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Homogeneous Gold Catalysis
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Author : Zhi Xiang Wong
language : en
Publisher:
Release Date : 2015
Homogeneous Gold Catalysis written by Zhi Xiang Wong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Alkenes categories.
Modern Gold Catalyzed Synthesis
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Author : A. Stephen K. Hashmi
language : en
Publisher: John Wiley & Sons
Release Date : 2012-05-21
Modern Gold Catalyzed Synthesis written by A. Stephen K. Hashmi and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-05-21 with Science categories.
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.