Download or read book A Primer in Frustrated Lewis Pair Hydrogenation Concepts to Applications written by Douglas W. Stephan and published by Royal Society of Chemistry. This book was released on 2021-11-17 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for senior undergraduate and graduate students, as well as those chemists unfamiliar with "frustrated Lewis pairs (FLPs)", this text serves as an introduction to the both the concept and application of FLPs in hydrogenation catalysis. The book begins by setting the stage as it was around the turn of the century. While the dramatic impacts of catalysis were undeniable, there was dependence of such technologies on transition metal chemistry. Contrastingly, the chemistry of main group elements was dominated by Lewis acid-base behavior. However, these perceptions were altered with the discovery of the ability of "frustrated Lewis pairs (FLPs)" to activate dihydrogen. The basic features, and mechanisms of action of these unique main group systems are chronicled, while the evolution of the initial findings to applications in catalytic hydrogenation is discussed. A subsequent chapter focuses on the breadth of organic substrates for which borane based FLP hydrogenations are effective. This is furthered with a chapter on the metal-free enantioselective reductions. FLP chemistry is not limited to systems involving boranes and this book also catalogues a range of FLP hydrogenation catalysts involving elements from across the periodic table. The final chapter in the book describes other directions of interest where the application of the concept of FLPs hydrogenation are beginning to emerge. Ideal for course use and self study, this book provides synthetic chemists with a fresh, expert introduction to the field. The reader will be left recognizing that hydrogenation catalysts is a domain no longer limited to transition metals.
Download or read book Frustrated Lewis Pairs I written by Gerhard Erker and published by Springer. This book was released on 2014-07-08 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discovery of Frustrated Lewis Pairs: Intermolecular FLPs for Activation of Small Molecules, by Douglas W. Stephan Intramolecular Frustrated Lewis Pairs: Formation and Chemical Features, by Gerald Kehr, Sina Schwendemann, Gerhard Erker Frustrated Lewis Pair Mediated Hydrogenations, by Douglas W. Stephan, Gerhard Erker Amine-Borane Mediated Metal-Free Hydrogen Activation and Catalytic Hydrogenation, by Victor Sumerin, Konstantin Chernichenko, Felix Schulz, Markku Leskelä, Bernhard Rieger, Timo Repo Hydrogen Activation by Frustrated Lewis Pairs: Insights from Computational Studies, by Tibor András Rokob, Imre Pápai Quantum Chemistry of FLPs and Their Activation of Small Molecules: Methodological Aspects, by Birgitta Schirmer, Stefan Grimme Computational Design of Metal-Free Molecules for Activation of Small Molecules, Hydrogenation, and Hydroamination, by Zhi-Xiang Wang, Lili Zhao, Gang Lu, Haixia Li, Fang Huang Computational Studies of Lewis Acidity and Basicity in Frustrated Lewis Pairs, by Thomas M. Gilbert Solid-State NMR as a Spectroscopic Tool for Characterizing Phosphane - Borane Frustrated Lewis Pairs, by Thomas Wiegand, Hellmut Eckert, Stefan Grimme
Download or read book Frustrated Lewis Pairs written by Chunfang Jiang and published by . This book was released on 2010 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frustrated Lewis Pair catalysed Hydrogenation Reactions in Ionic Liquid Solvents and the Effect of Moisture on the System written by Keng Lung Marcus Lee and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frustrated Lewis Pair (FLP)-catalysed hydrogenation has emerged as a rapidly growing field of research in main-group chemistry. Most FLPs have been demonstrated as effective catalysts in molecular solvents. However, the use of ionic liquid solvents for FLP-catalysed reactions is not common. In this project, the effect of ionic liquids on FLP-catalysed hydrogenation reactions was investigated. Three borane derivatives were synthesised and characterized. Unfortunately, on storage, it was found that most of the boranes were contaminated by moisture. After extensive troubleshooting, it was found that the water contamination happened in the most unlikely place "" the glovebox...
Download or read book Intrinsic Kinetics of frustrated Lewis Pair Hydrogenation Catalysis written by Nathan James Allcock and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogenation and Hydroamination Reactions Using Boron based Frustrated Lewis Pairs written by Tayseer Mahdi and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frustrated Lewis Pair Catalysts for Asymmetric Hydrogenation Hydrosilylation and Hydroboration Reactions written by Ghazi Ghattas and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frustrated Lewis Pairs written by Gerhard Erker and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frustrated Lewis Pairs II written by Gerhard Erker and published by . This book was released on 2013-06-30 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heavy Group 13 Elements Ga In in Frustrated Lewis Pair Reactions and Hydrogenation Catalysis written by Maotong Xu and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lewis acids Ga(C6F5)3 and In(C6F5)3 were synthesized and their Lewis acidities have been investigated by experimental and computational methods. In the presence of phosphine donors, these frustrated Lewis pairs (FLPs) were shown to heterolytically split dihydrogen and catalyze the hydrogenation of N-tert-butylbenzimine. Furthermore, the reactions with diphenyl disulfide produce phosphonium-gallates or phosphonium-indates of the form [tBu3PSPh][PhSE(C6F5)3] and [tBu3PSPh][(Îź-SPh)(E(C6F5)3)2] (E=Ga, In), while the reactions with phenylacetylene gave mixtures of the products [tBu3PH][PhCCE(C6F5)3] and tBu3P(Ph)C=C(H)E(C6F5)3. A number of these compounds were crystallographically characterized.
Download or read book Studies Into the Reactivity of Frustrated Lewis Pairs Containing N N Bases with Hydrogen written by Daniel A. Dalessandro and published by . This book was released on 2014 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolution of the Frustrated Lewis Pair Paradigm written by Andy M. Chapman and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis has sought to develop the field of small-molecule activation via the rational evolution of the principle of Frustrated Lewis Pairs. In the first instance, Chapter 1 serves to give a brief introduction into the field of small molecule activation by transition metals and FLPs, with a particular focus on the most challenging and impacting small molecule substrates. Chapter 2 [1] explores the concept of frustrated Lewis pairs and Lewis acidity in more detail and specifically, the structure-reactivity trends of boron Lewis acids in FLP systems with respect to the reversible binding of H2. The motivation for this research was to develop a series of linked phosphino-borinate FLPs with a view to generating systems that may activate hydrogen in a reversible manner, furthering the scope for this class of compounds in hydrogen storage applications. Chapter 3 [2] is a continuation on the previous theme; modifying the Lewis acid component of an FLP system to facilitate previously unseen transformations and address some of the issues of existing systems. More specifically, to address the lack of catalytic systems based on the FLP paradigm. To that end, a series of cationic phosphino-aryl(alky)oxymetallocenes (PAMs) was targeted with the hypothesis that these compounds would behave as transition metal-main group FLPs. Correspondingly, the limit of this semblance to the FLP was investigated in depth in Chapter 4 [3] by demonstrating that a wide range of the reactions reported for main group FLPs could be affected by PAM complexes. In addition, several other novel reactivity patterns were discovered that are so far unprecedented for the main group analogues. In the final chapter [4], the benefits of including the unique properties of the transition metals in PAM complexes is demonstrated by an in depth study into their utility as catalysts for the dehydrogenation of amine-boranes. The fact that this reaction is only known in a stoichiometric sense for the main group systems is testament to the success of the original thesis.
Download or read book Frustrated Lewis Pairs written by Gregory Charles Welch and published by . This book was released on 2008 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proazaphosphatrane and Bench stable Carbon based Lewis Acids in Frustrated Lewis Pair Chemistry written by Gabriel Nicholas Jun Hao Wee and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: B(C6F5)3 and P(MeNCH2CH2)3N form a classical Lewis adduct, (C6F5)3BP(MeNCH2CH2)3N. Although the adduct does not exhibit spectroscopic evidence of dissociation into its constituent Lewis acid and base, products of frustrated Lewis pair (FLP) addition reactions are observed with PhNCO, PhCH2N3, PhNSO, and CO2. Recently, a bench-stable trityl cation and P(MeNCH2CH2)3N were also found to form a classical Lewis adduct that does not exhibit spectroscopic evidence of dissociation. This adduct was able to carry out the heterolytic splitting of H2. Interestingly, when this and other newly synthesized bench-stable trityl cations were combined with phosphine bases such as P(t-Bu)3 and P(o-tol)3, FLPs capable of heterolytic splitting of H2 were generated and, in at least one case, reversible activation of H2 was observed. These recent findings open avenues towards the application of bench-stable carbon-based Lewis acids for FLP mediated hydrogenation.
Download or read book The Activation of Small Molecules Using Frustrated Lewis Pairs written by Hasna Zaher and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Transfer Reactions written by Gabriela Guillena and published by Springer. This book was released on 2016-09-27 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. 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.
Download or read book Catalytic Hydrogenation written by L. Cervený and published by Elsevier. This book was released on 1986-08-01 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collection of contributions in this volume presents the most up-to-date findings in catalytic hydrogenation. The individual chapters have been written by 36 top specialists each of whom has achieved a remarkable depth of coverage when dealing with his particular topic. In addition to detailed treatment of the most recent problems connected with catalytic hydrogenations, the book also contains a number of previously unpublished results obtained either by the authors themselves or within the organizations to which they are affiliated.Because of its topical and original character, the book provides a wealth of information which will be invaluable not only to researchers and technicians dealing with hydrogenation, but also to all those concerned with homogeneous and heterogeneous catalysis, organic technology, petrochemistry and chemical engineering.
