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Free Radical Synthesis And Functionalization Of Heterocycles
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Book Synopsis Free-Radical Synthesis and Functionalization of Heterocycles by : Yannick Landais
Download or read book Free-Radical Synthesis and Functionalization of Heterocycles written by Yannick Landais and published by Springer. This book was released on 2018-05-03 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the recent developments in the free-radical mediated synthesis and elaboration of heterocycles. The first chapter, dealing with radical cascade processes illustrates the power and the beauty of radical chemistry with some striking examples of total synthesis of complex natural heterocycles. As organic chemists strive towards sustainability, radical chemistry has recently seen major advances and efforts in this direction, including C-H activation of arenes and unactivated alkyl groups. Photochemical activation, for a long time the preferred mode of activation in radical chemistry has also seen an unexpected revival with the advent of visible light metal- and organocatalyzed photoredox processes. A survey of these emerging areas is provided along with the concepts at the origin of these developments. The venerable Minisci reaction allows for direct access to functionalized heterocycles. This process has lately seen an interesting renaissance and is discussed in this volume. Addition of heteroatom-centered radicals onto unsaturated systems constitutes another powerful method to construct heterocycles. Examples of such a strategy are proposed along with the formation of various heterocycles relying on homolytic substitution at sulfur, phosphorus and selenium. Additionally free-radical functionalization of reactive functional groups including isonitriles, isothiocyanates and related unsaturated systems which offer a straightforward route towards useful aromatic and non-aromatic heterocycles are discussed. Finally, as metals are able to trigger single electron transfer both in reductive and oxidative modes this provides another possibility for the synthesis of heterocycles. Significant research efforts have focused on the use of samarium, copper and other metals to access a broad variety of heterocycles in a single pot process, starting from readily available raw material. Examples and mechanistic insights are discussed by experts in this area.
Book Synopsis Heterocycles via Cross Dehydrogenative Coupling by : Ananya Srivastava
Download or read book Heterocycles via Cross Dehydrogenative Coupling written by Ananya Srivastava and published by Springer Nature. This book was released on 2019-08-23 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the developments in the synthesis and functionalization of different heterocycles based on the formation of carbon-carbon (C-C) and carbon-heteroatom (C-X) bonds using cross-dehydrogenative coupling (CDC). Consisting of 13 chapters, the book systematically describes the advances in the synthesis and functionalization of nitrogen, oxygen, and sulfur-containing heterocycles. It also discusses the various mechanistic pathways to help readers gain an in-depth understanding of the CDC reactions of heterocycles. Lastly, in order to promote green chemistry, it addresses a range of metal-free CDC reactions of heterocycles – an area that has attracted significant attention in both academic and industrial research.
Book Synopsis Science of Synthesis: Free Radicals: Fundamentals and Applications in Organic Synthesis 1 by : L. Fensterbank
Download or read book Science of Synthesis: Free Radicals: Fundamentals and Applications in Organic Synthesis 1 written by L. Fensterbank and published by Thieme. This book was released on 2021-07-09 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radically enhance your progress in organic synthesis Radical chemistry has undergone a renaissance in recent years. These two volumes will make the key developments accessible to a broad range of organic chemists. They cover both the generation of radicals and their use. The editors, Prof. Louis Fensterbank and Dr. Cyril Ollivier, are experts in radical chemistry and its application to organic synthesis. Find out all about the generation and use of radicals The two-volume set describes the fundamentals of radical chemistry and its application in organic synthesis. It includes practical examples of the generation of a variety of organic radicals. You will find critically reviewed, reliable and ready-to-use information on the use of radicals in: "single-electron transfer" "hydrogen-atom transfer" radical functionalization and cross-coupling processes. By understanding the fundamental reactivities of radicals, they can be harnessed for atom-efficient and green reactions.
Book Synopsis Science of Synthesis: Free Radicals: Fundamentals and Applications in Organic Synthesis 2 by : L. Fensterbank
Download or read book Science of Synthesis: Free Radicals: Fundamentals and Applications in Organic Synthesis 2 written by L. Fensterbank and published by Thieme. This book was released on 2020-12-17 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radically enhance your progress in organic synthesis Radical chemistry has undergone a renaissance in recent years. These two volumes will make the key developments accessible to a broad range of organic chemists. They cover both the generation of radicals and their use. The editors, Prof. Louis Fensterbank and Dr. Cyril Ollivier, are experts in radical chemistry and its application to organic synthesis. Find out all about the generation and use of radicals The two-volume set describes the fundamentals of radical chemistry and its application in organic synthesis. It includes practical examples of the generation of a variety of organic radicals. You will find critically reviewed, reliable and ready-to-use information on the use of radicals in: "single-electron transfer" "hydrogen-atom transfer" radical functionalization and cross-coupling processes. By understanding the fundamental reactivities of radicals, they can be harnessed for atom-efficient and green 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 Multicomponent Reactions towards Heterocycles by : Erik Van der Eycken
Download or read book Multicomponent Reactions towards Heterocycles written by Erik Van der Eycken and published by John Wiley & Sons. This book was released on 2022-03-21 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a wide-ranging overview of essential topics and recent advances in MCR chemistry Heterocycles are a central component in natural product chemistry, pharmaceuticals, agrochemicals, and material science. New synthetic methodologies integrating the sequencing of multicomponent reactions (MCRs) are today being used for the rapid synthesis of diversified heterocycles in just one step. Multicomponent Reactions towards Heterocycles presents an up-to-date summary MCR chemistry with a focus on the conjugation between modern synthetic methodologies and MCRs. Featuring contributions by leaders in the field, this comprehensive resource highlights applications of MCRs in natural products and intermediate synthesis, discusses current trends and future prospects in MCR chemistry, outlines novel multicomponent procedures, and more. The authors provide the practical information required for designing new reaction strategies and mechanisms, covering topics including MCR-based green synthetic methods, cyclization and cycloaddition reactions, heterocycle multicomponent syntheses in a continuous flow, catalytic alkynoyl generation, MCR synthesis of saturated heterocycles, and C–H functionalization and multicomponent reactions. Provides a thorough overview of heterocycles as input in multicomponent reactions Discusses recent advances in the field of MCR chemistry and progress in the synthesis and functionalization of heterocycles Demonstrates the use of MCRs to simplify synthetic design and achieve complexity and diversity in novel bioactive molecules Highlights examples of multicomponent polymerizations, target-oriented synthesis, and applications of MCR in medicinal chemistry Explains the methodology of using on-resin MCRs to produce heterocycle compounds Illustrating the key role of MCRs towards heterocycles in natural product synthesis, drug discovery, organic synthesis, and other applications, Multicomponent Reactions towards Heterocycles is required reading for synthetic chemists in academia and industry alike.
Book Synopsis Advances in Heterocyclic Chemistry by :
Download or read book Advances in Heterocyclic Chemistry written by and published by Academic Press. This book was released on 2020-04-24 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heterocyclic Chemistry is the definitive series in the field - one of great importance to organic chemists, polymer chemists, and many biological scientists. Because biology and organic chemistry increasingly intersect, the associated nomenclature also is being used more frequently in explanations. Written by established authorities in the field from around the world, this comprehensive review combines descriptive synthetic chemistry and mechanistic insight to yield an understanding of how chemistry drives the preparation and useful properties of heterocyclic compounds. Considered the definitive serial in the field of heterocyclic chemistry Serves as the go-to reference for organic chemists, polymer chemists and many biological scientists Provides the latest comprehensive reviews written by established authorities in the field Combines descriptive synthetic chemistry and mechanistic insight to enhance understanding of how chemistry drives the preparation and useful properties of heterocyclic compounds
Book Synopsis Carbohydrate-spiro-heterocycles by : László Somsák
Download or read book Carbohydrate-spiro-heterocycles written by László Somsák and published by Springer Nature. This book was released on 2019-10-26 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is devoted to compounds in which the spiro centre is part of a pyranoid or furanoid or an iminosugar ring. The chapters contributed deal with methodological peculiarities of syntheses of natural and artificial sugar derived spirocycles as well as their biological applications and other utilities including marketed drugs. Carbohydrates are ubiquitous molecules in nature and participate in a vast number of biological interactions. Especially their conjugates with practically all kinds of primary and secondary metabolic small molecules (and also biomacromolecules) representing valuable tools for glycobiology research and also lead compounds for drug discovery. While monosaccharides per se appear as heterocycles, their natural conjugates frequently exhibit spiro(hetero)cyclic derivatives, in many cases of high therapeutical relevance. As a consequence, the field of carbohydrate-spiro-heterocycles attracts intense interest from both chemical and biomedical aspects therefore this volume will be of interest for synthetic and medicinal chemists and (glyco)biologists, as well as researchers involved in various biomedical fields.
Book Synopsis Half a Century of Free Radical Chemistry by : Derek H. R. Barton
Download or read book Half a Century of Free Radical Chemistry written by Derek H. R. Barton and published by Cambridge University Press. This book was released on 1993-04-15 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the work of Nobel Laureate Derek Barton on the chemistry of organic free radicals, and the invention of new chemical reactions for use in the synthesis of biologically and economically important compounds. It begins with a mechanistic study of industrial significance on the pyrolysis of chlorinated alkanes. It continues with a theory on the biosynthesis of phenolate derived alkaloids involving phenolate radical coupling. The book then describes the work on nitrite photolysis (Barton reaction), which involved the invention of new radical chemistry leading to a simple synthesis of the important hormone, aldosterone. It also describes another new reaction extended to carboxlic acids that provides carbon, nitrogen, oxygen and other radicals under mild conditions. A final chapter summarizes recent applications of thiocarbonyl group derived radical reactions by other authors.
Download or read book Nitroxides written by Olivier Ouari and published by Royal Society of Chemistry. This book was released on 2021-05-13 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitroxides are versatile small organic molecules possessing a stabilised free radical. With their unpaired electron spin they display a unique reactivity towards various environmental factors, enabling a diverse range of applications. They have uses as synthetic tools, such as catalysts or building blocks; imaging agents and probes in biomedicine and materials science; for medicinal antioxidant applications; and in energy storage. Polynitroxides (polymers bearing pendant nitroxide sidechains) have been used in organic radical batteries, oxidation catalysts and in exchange reactions for constructing complex architectures. Chapters in this book cover the synthesis of nitroxides, EPR studies and magnetic resonance applications, physiochemical studies, and applications including in batteries, imaging and organic synthesis. With contributions from leaders in the field, Nitroxides will be of interest to graduate students and researchers across chemistry, physics, biology and materials science.
Book Synopsis Amino Acids: Insights and Roles in Heterocyclic Chemistry by : Zerong Wang
Download or read book Amino Acids: Insights and Roles in Heterocyclic Chemistry written by Zerong Wang and published by CRC Press. This book was released on 2023-05-26 with total page 1675 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first-of-its-kind four-volume book series, Amino Acids: Insights and Roles in Heterocyclic Chemistry, provides readers with up-to-date information on alpha-amino acids, the potential challenges in working with alpha-amino acids, the protecting groups for the carboxyl, amino and side chain groups of the amino acids, and the most popular heterocyclic compounds that are originating from alpha-amino acids. These heterocyclic compounds include hydantoins, thiohydantoins (including 2-thiohydantoins, 4-thiohydantoins, 2,4-dithiohydantoins), 2,5-diketopiperazines, N-carboxyanhydrides, N-thiocarboxyanhydrides, sydnones, sydnonimines, azlactones, pseudoazlactones, and oxazolidin-5-ones. This is the first resource to comprehensively collect all the heterocycles that can be directly prepared from alpha-amino acids. In addition, almost all kinds of synthetic methods for a particular type of heterocycles from alpha-amino acids are included, along with the detailed mechanistic discussions and experimental procedures. Volume 1: Protecting Groups collects and discusses the 260 protecting groups relating to amino acids, which have been organized by carboxyl group, amino group, and side chain groups. The conditions to introduce these protecting groups as well as their deprotecting procedures have also been incorporated, along with the physical properties, solvent effects, and temperature effects on the solubility of amino acids. It presents the solubility of glycine and phenylalanine in a variety of solvent systems to show the impact on amino acid, where glycine generally represents the polar amino acid whereas phenylalanine represents the amino acid of non-polar side chain. In Volume 2: Hydantoins, Thiohydantoins, and 2,5-Diketopiperazines, the author has compiled the three IUPAC accepted nomenclature systems for heterocyclic compounds, which will be very useful for readers working in the heterocyclic chemistry field for giving the synthesized molecules their correct names. In addition, three groups of heterocyclic compounds, i.e., hydantoins, thiohydantoins (including 2-thiohydantoin, 4-thiohydantoin and 2,4-dithiohydantoin), and 2,5-diketopiperazines, have been organized with updated literature information. Particularly, all three groups of heterocyclic compounds have demonstrated many important biological activities, particularly anticancer and antibacterial activities. On the other hand, these three groups of heterocycles can be applied as substrates to make other chemical derivatives, particularly novel unnatural amino acids. All their reactivities have been compiled and updated. These will be very valuable for readers who have been working in this area or have interest in this area. Volume 3: N-Carboxyanhydrides, N-Thiocarboxyanhydrides, and Sydnones presents up-to-date detailed information on two types of heterocyclic compounds that are originated from alpha-amino acids: NCAs/NTAs and sydnones/sydnonimines. The volume also covers the more than 10 initiating systems for the NCA monomers to undergo the ring-opening polymerization, which are very useful for readers in order to make living polypeptides/polypeptoids. In addition, the method to characterize these prepared polypeptides/polypeptoids are included. Particularly, two modern mass spectrometric techniques (MALDI-TOF and ESI-TOF) have been explained with detailed examples, where the elucidation of molecular weight of protein based on the ESI-TOF spectra have been given with a practical example as well as the theory that is based on, a unique feature of the volume. Volume 4: Azlactones and Oxazolidin-5-ones discusses two types of simple heterocycles that can be prepared from alpha-amino acids, i.e., azlactones (also known as oxazolones, 4-unsaturated azlactones included) and oxazolidin-5-ones. These heterocyclic compounds behave differently in both biological and chemical properties, and their biological activities are presented in a well-organized manner in this volume. This unique 4-volume set thoroughly covers more than seven types of heterocyclic compounds that are originated from alpha-amino acids, providing carefully compiled updated information with detailed examples. The author has shared many thoughtful insights based on his strong background in physical organic chemistry. The volumes will be highly valuable for graduate students and senior students, as well as for professors and researchers working in the field of medicinal and pharmaceutical chemistry, organic chemistry, organic synthesis, heterocycles, and proteins and peptides.
Book Synopsis C-H Bond Activation and Catalytic Functionalization I by : Pierre H. Dixneuf
Download or read book C-H Bond Activation and Catalytic Functionalization I written by Pierre H. Dixneuf and published by Springer. This book was released on 2015-12-18 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics of pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors. All chapters from Topics in Organometallic Chemistry are published OnlineFirst with an individual DOI. In references, Topics in Organometallic Chemistry is abbreviated as Top Organomet Chem and cited as a journal.
Book Synopsis Modern Strategies for Heterocycle Synthesis by : Gianfranco Favi
Download or read book Modern Strategies for Heterocycle Synthesis written by Gianfranco Favi and published by MDPI. This book was released on 2021-03-17 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterocycles feature widely in natural products, agrochemicals, pharmaceuticals and dyes, and their synthesis is of great interest to synthetic chemists in both academia and industry. The contributions of recent applications of new methodologies in C–H activation, photoredox chemistry, cross-coupling strategies, borrowing hydrogen catalysis, multicomponent and solvent-free reactions, regio- and stereoselective syntheses, as well as other new, attractive approaches for the construction of heterocyclic scaffolds are of great interest. This Special Issue is dedicated to featuring the latest research that is ongoing in the field of heterocyclic synthesis. It is expected that most submissions will focus on five- and six-membered oxygen and nitrogen-containing heterocycles, but structures incorporating other rings/heteroatoms will also be considered. Original research (communications, full papers and reviews) that discusses innovative methodologies for assembling heterocycles with potential application in materials, catalysis and medicine are therefore welcome.
Book Synopsis Free Radicals in Synthesis and Biology by : F. Minisci
Download or read book Free Radicals in Synthesis and Biology written by F. Minisci and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free-radical reactions have been for long time the domain of the physical chemists and the basic chemical industry (polymerization of vinyl monomers, oxidation by molecular oxygen, chlorination of methane etc.), where the use of simple molecules and the possibility of partial conversions without heavy problems of product separations makes less dramatic the aspects of regio and chemoselectivity. As synonym of unselectivity, free radical reactions were considered of poor use in the synthesis of fine chemicals or sophisticated molecules, where a high selectivity is an essential condition for the success, or in the involvement of biological processes. Within the last 15 years, however, an authentic explosion of synthetic applications of free radical reactions occurred; they have gained a remarkable position among the selective methods of synthesis. At the same time the great importance of free radical reactions in fundamental biological processes and in the metabolism of drugs has been recognized. Thus a specialized meeting on these topics was generally felt appropriate. I had the honour and the onus to organize this workshop because for more than 30 years I have been involved in the research of free radical reactions. Thanks to a generous grant from NATO Scientific Affairs Division and the financial support of CNR and chemical industry (Montedison, Enichem, Zambon) such a meeting among almost 50 specialists and 15 observers of sufficient standard to take advantage of the discussion, became possible at Bardolino (Italy).
Book Synopsis Metal-free Functionalized Carbons in Catalysis by : Alberto Villa
Download or read book Metal-free Functionalized Carbons in Catalysis written by Alberto Villa and published by Royal Society of Chemistry. This book was released on 2018-05-24 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-free carbons have recently shown great efficiency in several catalytic processes, including oxidative dehydrogenation (ODH) of ethylbenzene and alkenes, hydrogen evolution, liquid Br�nsted and Lewis acid catalysis and electrochemical reactions. The catalytic activities of carbon materials are intimately related to their defects, structures, and surface chemistry. In particular, nitrogen functionalized carbons present different surface functional groups, and they can be used as multifunctional catalysts, either through their electronic or nucleophilic properties, or their ability to form additional H bonds with substrates. This book provides an overview of the preparation, characterization and application of metal-free functionalized carbons, including carbon nanotubes, graphene, carbon nitride and covalent organic frameworks (COFs). It is ideal for researchers and industrialists working in catalysis, gas sensing and carbon dioxide storage.
Book Synopsis The logic of chemical synthesis by : E.J. Corey
Download or read book The logic of chemical synthesis written by E.J. Corey and published by Рипол Классик. This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Palladium Assisted Synthesis of Heterocycles by : Navjeet Kaur
Download or read book Palladium Assisted Synthesis of Heterocycles written by Navjeet Kaur and published by CRC Press. This book was released on 2019-05-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a compilation of the recent applications of palladium catalysts in organic synthesis. The book demonstrates that it is a highly dynamic research field. This methodology has emerged as a powerful tool for the efficient and chemoselective synthesis of heterocyclic molecules. In the past few years, several strategies have been pointed out to pursue more efficient, sustainable, and environment friendly chemical processes. Among those strategies, catalysis and the design of new processes that avoid the use of toxic reagents have been the focus of intense research.
