Download or read book Condensed Pyrazines written by G. W. H. Chesseman and published by John Wiley & Sons. This book was released on 2009-09-15 with total page 835 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an account of the preparation, properties, and uses of the more important bi- and tri-cyclic ring systems incorporating the pyrazine ring. The first 18 chapters survey the developments in the chemistry of quinoxalines since the appearance in 1953 of a previous monograph in this series. The subsequent 22 chapters provide the first authoritative reviews of the chemistry of such important related ring systems as the pyrrolopyrazines.
Download or read book Condensed Pyrazines written by G. W. H. Cheeseman and published by . This book was released on 1979 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nucleophilic Aromatic Substitution of Hydrogen written by Oleg N. Chupakhin and published by Academic Press. This book was released on 2012-12-02 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nucleophilic aromatic substitution in carbo- and heteroaromatic systems is a subject of considerable interest to chemists. This book uniquely addresses the systematic analysis of a vast range of nucleophilic substitutions of aromatic hydrogen. Nucleophilic displacement of hydrogen (the S N/H reactions) in pi-deficient aromatics, such as nitroarenes, arene-metal complexes, and the like Nucleophilic displacement of hydrogen in heterocyclic substrates such as pyridines, their aza and benzo analogs, pyrylium and thiapyrylium cations, and other heterocycles Mechanisms for the S N/H reactions (S N/H(AE), vicarious nucleophilic substitutions, and radical S N/H substitutions
Download or read book The Pyrazines Volume 41 written by Gordon Bruce Barlin and published by John Wiley & Sons. This book was released on 2009-09-15 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complete coverage of chemical literature on simple pyrazines recorded in Beilstein to 1929, and Chemical Abstracts through 1978 (volume 89), together with selected references to 1980. Describes their history, occurrence, biological activity and uses, and nomenclature. Classified primary syntheses of pyrazines according to the starting materials employed. Treats primary syntheses of pyrazine N-oxides. Details syntheses, properties and reactions of alkyl, halogeno, hydroxy, mercapto, amino and carboxy pyrazines and their derivative and related compounds. Extensive table lists known simple pyrazines, physical data such as melting points and boiling points, and references.
Download or read book Advances in Heterocyclic Chemistry written by and published by Elsevier. This book was released on 2024-05-27 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heterocyclic Chemistry, Volume 144 highlights new advances in the field, with this volume presenting chapters on Metal free C-H functionalization of aromatic and non-aromatic heterocyclic systems, Divergent Total Synthesis of Indolizidine-, Quinolizidine-, and Decahydroquinoline-type Poison-frog Alkaloids, A perspective on the synthetic potential of bio-based building blocks for heterocyclic chemistry, Recent advances in the synthesis of 3,3-disubstituted oxetanes, and Pyrrole-based chemosensors: Recent trends. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in Advances in Heterocyclic Chemistry
Download or read book Condensed Pyridazine and Pyrazine Rings cinnolines Phthalazines and Quinoxalines written by James Charles Edward Simpson and published by . This book was released on 1953 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterocyclic N oxides written by Angelo Albini and published by Routledge. This book was released on 2019-01-22 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive presentation of all aspects of heterocyclic N-oxides. Topics discussed include the preparation of these compounds by N-oxidation of heterocycles and simultaneous synthesis of the ring and formation of the N-oxide group; general spectroscopic characteristics and molecular structure; and reactions and recently devel
Download or read book The Uniqueness of Biological Materials written by A. E. Needham and published by Elsevier. This book was released on 2013-10-22 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Uniqueness of Biological Materials deals with the unique properties of biological materials, carbohydrates, lipids, proteins, and nucleic acids and the extent to which this uniqueness is related to the uniqueness of life in general. More specifically, it examines whether the uniqueness of life is inherent in the material of living organisms. This volume is comprised of 32 chapters and begins with an introduction to the nature of biological uniqueness and how it is related to the uniqueness of life by comparing the elemental composition of living organisms with that of their environment. The discussion then turns to the uniqueness of hydrogen and oxygen which make up water; carbon; carbohydrates; and ternary compounds that are more fully oxidized than carbohydrates. Ternary compounds of intermediate grades of reduction are also considered, along with fatty acids and related lipids, paraffins, and olefins and ternary unsaturated compounds. Other biological materials discussed include peptides, proteins, amino acids, and halogens. This book will be of interest to students and practitioners of biology and biochemistry.
Download or read book Organic Electrochemistry Fourth Edition written by Ole Hammerich and published by CRC Press. This book was released on 2000-12-14 with total page 1418 pages. Available in PDF, EPUB and Kindle. Book excerpt: A presentation of developments in the electrochemistry of C60 and related compounds, electroenzymatic synthesis, conducting polymers, and electrochemical partial fluorination. It contains accounts of carbonyl compounds, anodic oxidation of oxygen-containing compounds, electrosynthesis of bioactive materials, electrolyte reductive coupling, and more.
Download or read book Quinoxalines written by Vakhid A. Mamedov and published by Springer. This book was released on 2016-04-26 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the fundamental aspects of quinoxaline chemistry: synthesis, reactions, mechanisms, structure, properties, and uses. The first four chapters present a survey of the developments in quinoxaline chemistry since the publication of the monograph on “Condensed Pyrazines” by Cheeseman and Cookson in 1979. These chapters give comprehensive coverage of all the methods of the synthesis of quinoxalines and the important quinoxaline-containing ring systems such as thiazolo[3,4-a]-, pyrrolo[1,2-a]-, and imidazo[1,5-a]quinoxalines. Chapter five describes many new methods for the construction of quinoxaline macrocycles, which are important in applications such as optical devices and materials. The final chapter reviews all previously known rearrangements of heterocyclic systems that lead to benzimidazole derivatives. Mamedov critically analyses these transformations to reveal a novel acid-catalyzed rearrangement of quinoxalinones giving 2-heteroarylbenzimidazoles and 1-heteroarylbenzimidazolones in the presence of nucleophilic reactants (MAMEDOV Heterocycle Rearrangement). This book is of interest to researchers in the fields of heterocyclic and synthetic organic chemistry.
Download or read book Syntheses and Reactions of Condensed Pyrazines written by Stephen David Carter and published by . This book was released on 1975 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second volume of a first-of-its-kind four-volume book set that provides readers with up-to-date information on α-amino acids, the potential challenges in working with α-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 α-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. In Volume 2: Hydantoins, Thiohydantoins, and 2,5-Diketopiperazines compiles the three IUPAC accepted nomenclature systems for heterocyclic compounds, which will be very useful for readers working in the heterocyclic chemistry field for giving 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. The other volumes include: Volume 1: Protecting Groups Volume 3: N-Carboxyanhydrides, N-Thiocarboxyanhydrides, and Sydnones Volume 4: Azlactones and Oxazolidin-5-ones All together, this unique 4-volume set thoroughly covers the two 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.
Download or read book International Patent Classification written by and published by . This book was released on 2006 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quinoxalines Volume 61 Spplement 2 written by Desmond J. Brown and published by John Wiley & Sons. This book was released on 2004-01-22 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume in the Chemistry of Heterocyclic Compounds series presents a comprehensive review of the quinoxaline literature from 1975 to the present (2002), updating Volumes 5 and 35. It provides an alphabetical table of known simple quinoxalines, including new compounds discussed in this volume and their physical data, as well as the pyrazines from the original volumes. Biological activities, spectral or other physical studies, and other such materials appear at appropriate points in the text. The in-depth coverage includes synthesis, reactions, spectroscopic, and physical properties for each class of compounds. Chemistry of Heterocyclic Compounds, Volume 61: Supplement II provides the most up-to-date summation of knowledge of the synthetic chemistry of quinoxalines.
Download or read book Progress in Heterocyclic Chemistry written by H. Suschitzky and published by Elsevier. This book was released on 2013-10-22 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Heterocyclic Chemistry Volume 5 deals critically with original material selected essentially from the 1992 heterocyclic literature. Chapters 1 and 2 are given over to reviews: in the first, SO2 extrusion from five-membered rings is discussed by R.A. Aitken and colleagues, which completes last year's review on this topic. The second review presents a review of 2-acylamino-3-dimethylaminopropenoates in heterocyclic synthesis. The chapters are arranged according to ring sizes as in the previous volumes and are supported by references, numerous diagrams and a subject index.
Download or read book The Naphthyridines written by Desmond J. Brown and published by Wiley-Interscience. This book was released on 2007-10-26 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: A volume in the Chemistry of Heterocyclic Compounds series, this book provides a summary of the chemistry of each of the six naphthyridine systems along with tables of known simple derivatives with original references. Each of the six naphthyridine systems are described in valuable detail and coverage includes: Primary synthetic methods from non-naphthyridine substrates; Chemistry and properties of the parent heterocycle and its simple alkyl derivatives; Formation and reactions of halogeno derivatives; formation and reactions of hydroxy, oxo, alkoxy, and related derivatives.
Download or read book The Pyrimidines Volume 16 Supplement 2 written by Desmond J. Brown and published by John Wiley & Sons. This book was released on 2009-09-15 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing from over 2,500 papers, this volume eliminates the need for time-consuming literature surveys for pyrimidines from 1970 through 1983. Chapters summarize the major advances in pyrimidine chemistry, detail advances in methods of primary synthesis of pyrimidines, update all aspects of hydropyrimidines, and treat recent advances in the ionization and spectra of pyrimidines.
