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Forming Quaternary Carbons Using Photoredox Catalysis And Applications In Total Synthesis
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Book Synopsis Forming Quaternary Carbons Using Photoredox Catalysis and Applications in Total Synthesis by : Gregory Lawrence Lackner
Download or read book Forming Quaternary Carbons Using Photoredox Catalysis and Applications in Total Synthesis written by Gregory Lawrence Lackner and published by . This book was released on 2016 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Chapter 1, the development of tert-alkyl N-phthalimidoyl oxalates as precursors for generating tertiary carbon radicals and forming quaternary carbons is discussed. The coupling of these radical precursors with conjugate acceptors is determined to be farily general with respect to both oxalate and alkene coupling partners. Studies that elucidate the mechanism of the coupling reaction are also presented. The mechanism of radical termination is found to be directly influenced by the stoichiometric reductant additive included in the reaction.In Chapter 2, a bimolecular radical fragment coupling is employed as a key step to complete the total syntheses of several trans-clerodane diterpenoid natural products as well as one ent-halimane diterpenoid natural product. In this context, the tertiary radical is optimally generated from an (N-acyloxy)phthalimide substrate rather than the corresponding tert-alkyl N-phthalimidoyl oxalate.In Chapter 3, a photoredox-catalyzed radical coupling is used to stereoselectively construct the central C8--C14 bond of the rearranged spongian diterpene macfarlandin C. An allylic phosphate displacement and intramolecular carbonyl-ene cyclization enable a robust enantioselective synthesis of the decalin fragment. The unexpected intramolecular cyclization of an alkoxycarbonyl radical derived from the (8S)-oxalate prompts a revised synthetic approach targeting the (8R)-oxalate radical precursor, which couples efficiently with (S)-5-methoxyfuran-2-one. Two synthetic routes to the bicyclic lactone moiety of macfarlandin C are investigated on a simple model substrate. These attempts are ultimately foiled by the difficulty in forming a cis-alpha, beta-disubstituted butyrolactone that bears a quaternary substituent at the beta-position.
Book Synopsis Quaternary Stereocenters by : Jens Christoffers
Download or read book Quaternary Stereocenters written by Jens Christoffers and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the gap in the literature, this book presents everything there is to know about this topic. By comprehensively covering the quaternary stereocenters found in a range of important and useful molecules in pharmaceutical and medicinal applications, as well as in thousands of natural products, the book provides the know-how chemists need to synthesize challenging molecules with numerous applications. A must for organic chemists in academia, the pharmaceutical industry and medicine. From the Contents: Important Natural Products Important Pharmaceuticals and Intermediates Aldol Reactions Michael Reactions and Conjugate Additions Cycloaddition Reactions Rearrangement Reactions Alkylation of Ketones and Imines Asymmetric Allylic Alkylation Asymmetric Cross Coupling and Heck Reactions Phase Transfer Catalysis Enzymatic Methods Radical Reactions
Book Synopsis Radical Reactions in Organic Synthesis by : Samir Z. Zard
Download or read book Radical Reactions in Organic Synthesis written by Samir Z. Zard and published by Oxford Chemistry Masters. This book was released on 2003 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Samir Zard provides a description of radical reactions and their applications in organic synthesis. This book shows that an with an elementary knowledge of kinetic and some common sense, it is possible to harness radicals into a tremendously powerful tool for solving synthetic problems.
Book Synopsis Zinc Catalysis by : Stephan Enthaler
Download or read book Zinc Catalysis written by Stephan Enthaler and published by John Wiley & Sons. This book was released on 2015-04-27 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the gap in the market for comprehensive coverage of this hot topic, this timely book covers a wide range of organic transformations, e. g. reductions of unsaturated compounds, oxidation reactions, Friedel-Crafts reactions, hydroamination reactions, depolymerizations, transformations of carbon dioxide, oxidative coupling reactions, as well as C-C, C-N, and C-O bond formation reactions. A chapter on the application of zinc catalysts in total synthesis is also included. With its aim of stimulating further research and discussion in the field, this is a valuable reference for professionals in academia and industry wishing to learn about the latest developments.
Book Synopsis Enantioselective Chemical Synthesis by : Elias J. Corey
Download or read book Enantioselective Chemical Synthesis written by Elias J. Corey and published by Elsevier. This book was released on 2013-10-23 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by world-renowned and best-selling experts, Nobel Laureate E. J. Corey and Laszlo Kurti, Enantioselective Chemical Synthesis offers an authoritative and comprehensive overview of the field's progress; the processes and tools for key formations; future development for complex, stereocontrolled (enantiomeric or diastereoisomeric) molecules; and valuable examples of multi-step syntheses. Utilizing a color-coded scheme to illustrate chemical transformations, Enantioselective Chemical Synthesis provides clear explanation and guidance through vital asymmetrical syntheses and insight into the next steps for the field. Researchers, professionals, and academics will benefit from this valuable, thorough, and unique resource. - In Part I, the authors present clearly, comprehensively and concisely the most useful enantioselective processes available to synthetic chemists. - Part II provides an extensive discussion of the most logical ways to apply these new enantioselective methods to the planning of syntheses of stereochemically complex molecules. This hitherto neglected area is essential for the advancement of enantioselective synthesis to a more rational and powerful level. - Part III describes in detail many reaction sequences which have been used successfully for the construction of a wide variety of complex target molecules - Clearly explains stereochemical synthesis in theory and practice - Provides a handy tool box for scientists wishing to understand and apply chiral chemical synthesis - Describes almost 50 real life examples of asymmetric synthesis in practice and examines how the chiral centers were introduced at key synthetic stages
Book Synopsis Stereoselective Formation of All Carbon Quaternary Centers by : Erica Anne Tiong
Download or read book Stereoselective Formation of All Carbon Quaternary Centers written by Erica Anne Tiong and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photocatalysis by : Dionysios D Dionysiou
Download or read book Photocatalysis written by Dionysios D Dionysiou and published by Royal Society of Chemistry. This book was released on 2016-03-30 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: From environmental remediation to alternative fuels, this book explores the numerous important applications of photocatalysis. The book covers topics such as the photocatalytic processes in the treatment of water and air; the fundamentals of solar photocatalysis; the challenges involved in developing self-cleaning photocatalytic materials; photocatalytic hydrogen generation; photocatalysts in the synthesis of chemicals; and photocatalysis in food packaging and biomedical and medical applications. The book also critically discusses concepts for the future of photocatalysis, providing a fascinating insight for researchers. Together with Photocatalysis: Fundamentals and Perspectives, these volumes provide a complete overview to photocatalysis.
Book Synopsis Transition Metal-Catalyzed Carbene Transformations by : Jianbo Wang
Download or read book Transition Metal-Catalyzed Carbene Transformations written by Jianbo Wang and published by John Wiley & Sons. This book was released on 2021-12-20 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents an up-to-date overview of the rapidly growing field of carbene transformations Carbene transformations have had an enormous impact on catalysis and organometallic chemistry. With the growth of transition metal-catalyzed carbene transformations in recent decades, carbene transformations are today an important compound class in organic synthesis as well as in the pharmaceutical and agrochemical industries. Edited by leading experts in the field, Transition Metal-Catalyzed Carbene Transformations is a thorough summary of the most recent advances in the rapidly expanding research area. This authoritative volume covers different reaction types such as ring forming reactions and rearrangement reactions, details their conditions and properties, and provides readers with accurate information on a wide range of carbene reactions. Twelve in-depth chapters address topics including carbene C-H bond insertion in alkane functionalization, the application of engineered enzymes in asymmetric carbene transfer, progress in transition-metal-catalyzed cross-coupling using carbene precursors, and more. Throughout the text, the authors highlight novel catalytic systems, transformations, and applications of transition-metal-catalyzed carbene transfer. Highlights the dynamic nature of the field of transition-metal-catalyzed carbene transformations Summarizes the catalytic radical approach for selective carbene cyclopropanation, high enantioselectivity in X-H insertions, and bio-inspired carbene transformations Introduces chiral N,N'-dioxide and chiral guanidine-based catalysts and different transformations with gold catalysis Discusses approaches in cycloaddition reactions with metal carbenes and polymerization with carbene transformations Outlines multicomponent reactions through gem-difunctionalization and transition-metal-catalyzed cross-coupling using carbene precursors Transition Metal-Catalyzed Carbene Transformations is essential reading for all chemists involved in organometallics, including organic and inorganic chemists, catalytic chemists, and chemists working in industry.
Book Synopsis Modern Photocatalytic Strategies in Natural Product Synthesis by : A. Douglas Kinghorn
Download or read book Modern Photocatalytic Strategies in Natural Product Synthesis written by A. Douglas Kinghorn and published by Springer Nature. This book was released on 2023-01-01 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent reports of total syntheses involving a photocatalytic reaction as a key step in the methodology. Modern photocatalysis has proven its generality for the development and functionalization of native functionalities. To date, the field has found broad applications in diverse research areas, including the total synthesis of natural products. Among the selected examples presented in this book, it highlights how the photocatalytic process proceeds in a highly chemo-, regio-, and stereoselective manner, thereby allowing the rapid access to structurally complex architectures under light-driven conditions.
Book Synopsis Carbon-carbon Bond Forming Reactions with Oxiranyl Radicals by : Yizhe Wang
Download or read book Carbon-carbon Bond Forming Reactions with Oxiranyl Radicals written by Yizhe Wang and published by . This book was released on 1998 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Iodine Catalysis in Organic Synthesis by : Kazuaki Ishihara
Download or read book Iodine Catalysis in Organic Synthesis written by Kazuaki Ishihara and published by John Wiley & Sons. This book was released on 2022-05-16 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iodine Catalysis in Organic Synthesis The first book of its kind to highlight iodine as a sustainable alternative to conventional transition metal catalysis Iodine Catalysis in Organic Synthesis provides detailed coverage of recent advances in iodine chemistry and catalysis, focusing on the utilization of various iodine-containing compounds as oxidative catalysts. Featuring contributions by an international panel of leading research chemists, this authoritative volume explores the development of environmentally benign organic reactions and summarizes catalytic transformations of molecular iodine and iodine compounds such as hypervalent organoiodine and inorganic iodine salts. Readers are first introduced to the history of iodine chemistry, the conceptual background of homogeneous catalysis, and the benefits of iodine catalysis in comparison with transition metals. Next, chapters organized by reaction type examine enantioselective transformations, catalytic reactions involving iodine, catalyst states, oxidation in iodine and iodine catalyses, and catalytic reactions based on halogen bonding. Practical case studies and real-world examples of different applications in organic synthesis and industry are incorporated throughout the text. An invaluable guide for synthetic chemists in both academic and industrial laboratories, Iodine Catalysis in Organic Synthesis: Provides a thorough overview of typical iodine-catalyzed reactions, catalyst systems, structures, and reactivity Explores promising industrial applications of iodine-based reagents for organic synthesis Highlights the advantages iodine catalysis has over classical metal-catalyzed reactions Discusses sustainable and eco-friendly methods in hypervalent iodine chemistry Edited by two world authorities on the catalytic applications of organoiodine compounds, Iodine Catalysis in Organic Synthesis is required reading for catalytic, organic, and organometallic chemists, medicinal and pharmaceutical chemists, industrial chemists, and academic researchers and advanced students in relevant fields.
Book Synopsis Catalysis for Clean Energy and Environmental Sustainability by : K. K. Pant
Download or read book Catalysis for Clean Energy and Environmental Sustainability written by K. K. Pant and published by Springer Nature. This book was released on 2021-04-01 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is part of a two-volume work that offers a unique blend of information on realistic evaluations of catalyst-based synthesis processes using green chemistry principles and the environmental sustainability applications of such processes for biomass conversion, refining, and petrochemical production. The volumes provide a comprehensive resource of state-of-the-art technologies and green chemistry methodologies from researchers, academics, and chemical and manufacturing industrial scientists. The work will be of interest to professors, researchers, and practitioners in clean energy catalysis, green chemistry, chemical engineering and manufacturing, and environmental sustainability. This volume focuses on catalyst synthesis and green chemistry applications for petrochemical and refining processes. While most books on the subject focus on catalyst use for conventional crude, fuel-oriented refineries, this book emphasizes recent transitions to petrochemical refineries with the goal of evaluating how green chemistry applications can produce clean energy through petrochemical industrial means. The majority of the chapters are contributed by industrial researchers and technicians and address various petrochemical processes, including hydrotreating, hydrocracking, flue gas treatment and isomerization catalysts.
Book Synopsis Visible Light Photocatalysis in Organic Chemistry by : Corey R.J. Stephenson
Download or read book Visible Light Photocatalysis in Organic Chemistry written by Corey R.J. Stephenson and published by John Wiley & Sons. This book was released on 2018-05-29 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the need for a ready reference that reflects the vast developments in this field, this book presents everything from fundamentals, applications, various reaction types, and technical applications. Edited by rising stars in the scientific community, the text focuses solely on visible light photocatalysis in the context of organic chemistry. This primarily entails photoinduced electron transfer and energy transfer chemistry sensitized by polypyridyl complexes, yet also includes the use of organic dyes and heterogeneous catalysts. A valuable resource to the synthetic organic community, polymer and medicinal chemists, as well as industry professionals.
Book Synopsis Solar Fuel Generation by : Yatendra S. Chaudhary
Download or read book Solar Fuel Generation written by Yatendra S. Chaudhary and published by CRC Press. This book was released on 2017-01-20 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the search for renewable sources of energy grows more urgent, more and more attention is focusing on the blueprint offered by biological photosynthesis for translating the energy of our Sun into energy rich molecules like H2 and carbohydrates, commonly known as "solar fuels." These solar fuels have enormous potential to store high densities of energy in the form of chemical bonds as well as being transportable. This book offers a complete overview of the promising approaches to solar fuel generation, including the direct pathways of solar H2 generation and CO2 photocatalytic reduction. Solar Fuel Generation is an invaluable tool for graduate students and researchers (especially chemists, physicists, and material scientists) working in this field.
Book Synopsis Amide Bond Activation by : Michal Szostak
Download or read book Amide Bond Activation written by Michal Szostak and published by MDPI. This book was released on 2019-07-12 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: The amide bond represents a privileged motif in chemistry. The recent years have witnessed an explosion of interest in the development of new chemical transformations of amides. These developments cover an impressive range of catalytic N–C bond activation in electrophilic, Lewis acid, radical, and nucleophilic reaction pathways, among other transformations. Equally relevant are structural and theoretical studies that provide the basis for chemoselective manipulation of amidic resonance. This monograph on amide bonds offers a broad survey of recent advances in activation of amides and addresses various approaches in the field.
Book Synopsis Photoorganocatalysis In Organic Synthesis by : Maurizio Fagnoni
Download or read book Photoorganocatalysis In Organic Synthesis written by Maurizio Fagnoni and published by World Scientific. This book was released on 2019-02-19 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of organocatalysts able to photocatalyze an organic reaction is a rapidly growing field. These photocatalyzed transformations are more environmentally sustainable with respect to the use of expensive/toxic metal-based (photo)catalysts.Based on the authors' extensive experience in photogenerated intermediates, this book presents an overview on photocatalyzed organic processes having a synthetic significance, where an organic molecule functions as the photocatalyst.After a brief introduction defining the nature and the characteristics of a photoorganocatalyst (POC), the chapters are organized according to the class of POC used, as detailed below.Each chapter begins with a summary of the photophysical characteristics of the POCs and is followed by selected examples of synthetic applications. The last two chapters are devoted to the adoption of photoorganocatalysis in polymerization and to flow photoorganocatalysis. These in-depth explanations and practical applications make this title an essential reading for any chemistry student interested in organic (sustainable) synthesis.
Book Synopsis Science of Synthesis: Dual Catalysis in Organic Synthesis 1 by : G. A. Molander
Download or read book Science of Synthesis: Dual Catalysis in Organic Synthesis 1 written by G. A. Molander and published by Thieme. This book was released on 2020-05-22 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of dual catalysis has developed rapidly over the last decade, and these volumes define its impact on organic synthesis. The most important, basic concepts of synergistic, dual catalytic cycles are introduced, providing newcomers to the field with reliable information on this new approach to facilitating the synthesis of organic molecules. Background information and reliable procedures for challenging transformations in synthesis are presented, applying the concept of cooperative dual catalysis as a means of increasing molecular complexity in the most efficient manner. The most useful, practical, and reliable methods for dual catalysis combining metal catalysts, organocatalysts, photocatalysts, and biocatalysts are presented.
