Download or read book The Anomeric Effect and Related Stereoelectronic Effects at Oxygen written by A. J. Kirby and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Anomeric Effect and Related Stereoelectronic Effects at Oxygen written by Anthony John Kirby and published by . This book was released on 1983 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Anomeric Effect written by Eusebio Juaristi and published by CRC Press. This book was released on 1994-10-12 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of the structural, conformational, and chemical manifestations of the anomeric effect. In order to present a cogent discussion of this most fundamental and relevant phenomenon, three chapters examine our present understanding of the origin of this conformational effect, based upon a wealth of theoretical and physical data. Equally important, however, are three additional chapters that deal with the general consequences of the stereoelectronic interactions that are associated with the basis of the anomeric effect. The remainder of the book is devoted to new areas of development in the topic-such as differentiation of the endo and exo anomeric interactions, specific analysis of the enthalpic component of anomeric effects, critical evaluation of the kinetics and reverse anomeric effects, discovery of a new substantial effect in second- and lower-row anomeric segments, and others.
Download or read book Stereoelectronic Effects in Organic Chemistry written by Pierre Deslongchamps and published by Pergamon. This book was released on 1983 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrostatic and Stereoelectronic Effects in Carbohydrate Chemistry written by Momcilo Miljkovic and published by Springer Science & Business Media. This book was released on 2014-01-06 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with polar effects in carbohydrates and how these effects control the stereochemistry of carbohydrate reactions. This is important for understanding the mechanisms of certain carbohydrate reactions, including enzymatic reactions such as glycosidases, a very important group of enzymes in living matter. It is also very useful for synthetic carbohydrate chemists who would like to synthesize stereoselectively certain classes of carbohydrates. This book will be a very important source of information for practicing synthetic carbohydrate chemists. The book will also be helpful for organic chemists, or for those studying glycobiology.
Download or read book The Anomeric Effect and Associated Stereoelectronic Effects written by Gregory Robert James Thatcher and published by Washington, DC : American Chemical Society. This book was released on 1993 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses contemporary experimental and computational studies on the anomeric effect and related stereoelectronic effects and presents conflicting data and theories in this highly controversial area. Explores applications in carbohydrate chemistry, including enzymology, as well as organometallic chemistry and the chemistry of phosphates and sulfates. Includes examination of molecular modeling methods in compounds influenced by stereoelectronic effects.
Download or read book Advanced Organic Chemistry written by Francis A. Carey and published by Springer Science & Business Media. This book was released on 2007-06-13 with total page 1213 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-part, fifth edition of Advanced Organic Chemistry has been substantially revised and reorganized for greater clarity. The material has been updated to reflect advances in the field since the previous edition, especially in computational chemistry. Part A covers fundamental structural topics and basic mechanistic types. It can stand-alone; together, with Part B: Reaction and Synthesis, the two volumes provide a comprehensive foundation for the study in organic chemistry. Companion websites provide digital models for study of structure, reaction and selectivity for students and exercise solutions for instructors.
Download or read book Oxygen The Key to Stereoelectronic Control in Chemistry written by Igor Alabugin and published by American Chemical Society. This book was released on 2023-05-25 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although carbon is considered the central element of organic chemistry, the broader chemical world has one more star player—oxygen. Billions of years of evolution have filled your room with oxygen as countless cyanobacteria and plants work on changing our planet. Oxygen is everywhere—from geology to biology, from the Earth's crust to the ozone layer. This digital primer aims to analyze chemical reactivity through the prism of oxygen chemistry. The key to understanding this chemistry is the lone pairs of oxygen (i.e., the underutilized "idle" electrons that do not directly contribute to the Lewis structure of molecules). By highlighting the many roles of oxygen, we will illustrate how chemistry rises above the limitations of Lewis structures and how electrons stay neither idle nor "lone" even if they are in "lone pairs" when an oxygen atom is near a reaction center. This digital primer will introduce important types of chemical bonding that transcend undergraduate textbooks but that are likely to drive the development of new chemical reactions in the future.
Download or read book March s Advanced Organic Chemistry written by Michael B. Smith and published by John Wiley & Sons. This book was released on 2007-01-29 with total page 2379 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sixth Edition of a classic in organic chemistry continues its tradition of excellence Now in its sixth edition, March's Advanced Organic Chemistry remains the gold standard in organic chemistry. Throughout its six editions, students and chemists from around the world have relied on it as an essential resource for planning and executing synthetic reactions. The Sixth Edition brings the text completely current with the most recent organic reactions. In addition, the references have been updated to enable readers to find the latest primary and review literature with ease. New features include: More than 25,000 references to the literature to facilitate further research Revised mechanisms, where required, that explain concepts in clear modern terms Revisions and updates to each chapter to bring them all fully up to date with the latest reactions and discoveries A revised Appendix B to facilitate correlating chapter sections with synthetic transformations
Download or read book Advances in Heterocyclic Chemistry written by Alan R. Katritzky and published by Academic Press. This book was released on 2012-02-24 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the area-one of great importance to organic chemists, polymer chemists and many biological scientists. Written by established authorities in the field, the comprehensive reviews combine descriptive chemistry and mechanistic insight and yield an understanding of how the chemistry drives the properties. Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the area - one of great importance to organic chemists, polymer chemists and many biological scientists Written by established authorities in the field, the comprehensive reviews combine descriptive chemistry and mechanistic insight and yield an understanding of how the chemistry drives the properties
Download or read book Concerted Organic and Bio Organic Mechanisms written by Andrew Williams and published by CRC Press. This book was released on 2020-11-25 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of concerted mechanisms was formulated nearly 90 years ago and virtually all general organic chemistry texts mention it. Until now, however, no monograph has addressed the concept explicitly. Over the last two decades, substantial advancements made in the development of precise methods for elucidating concerted mechanisms have heightened the need for a comprehensive text on the subject. Concerted Organic and Bio-organic Mechanisms gathers the salient materials related to this emerging field into a single text. It sets forth the precise definition of concertedness-along with working sub-definitions-and describes rigorous experimental tools chemists can use to diagnose the existence or absence of concerted mechanisms. Advances in our understanding of concerted mechanisms lead to further questions. Concerted Organic and Bio-organic Mechanisms provides the background and the tools researchers need to consider these important questions and further advance the frontiers of reactions, synthesis, and catalysis.
Download or read book Modern Organic Synthesis written by George S. Zweifel and published by John Wiley & Sons. This book was released on 2017-03-09 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book bridges the gap between sophomore and advanced / graduate level organic chemistry courses, providing students with a necessary background to begin research in either an industry or academic environment. • Covers key concepts that include retrosynthesis, conformational analysis, and functional group transformations as well as presents the latest developments in organometallic chemistry and C–C bond formation • Uses a concise and easy-to-read style, with many illustrated examples • Updates material, examples, and references from the first edition • Adds coverage of organocatalysts and organometallic reagents
Download or read book Principles of Asymmetric Synthesis written by R.E. Gawley and published by Elsevier. This book was released on 1996-11-21 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world is chiral. Most of the molecules in it are chiral, and asymmetric synthesis is an important means by which enantiopure chiral molecules may be obtained for study and sale. Using examples from the literature of asymmetric synthesis (more than 1300 references), the aim of this book is to present a detailed analysis of the factors that govern stereoselectivity in organic reactions. It is important to note that the references were each individually checked by the authors to verify relevance to the topics under discussion. The study of stereoselectivity has evolved from issues of diastereoselectivity, through auxiliary-based methods for the synthesis of enantiomerically pure compounds (diastereoselectivity followed by separation and auxiliary cleavage), to asymmetric catalysis. In the latter instance, enantiomers (not diastereomers) are the products, and highly selective reactions and modern purification techniques allow preparation - in a single step - of chiral substances in 99% ee for many reaction types. After an explanation of the basic physical-organic principles of stereoselectivity, the authors provide a detailed, annotated glossary of stereochemical terms. A chapter on "Analytical Methods" provides a critical overview of the most common methods for analysis of stereoisomers. The authors then follow the 'tried-and-true' format of grouping the material by reaction type. Thus, there are four chapters on carbon-carbon bond forming reactions (enolate alkylations, organometal additions to carbonyls, aldol and Michael reactions, and cycloadditions and rearrangements), one chapter on reductions and hydroborations (carbon-hydrogen bond forming reactions), and one on oxidations (carbon-oxygen and carbon-nitrogen bond forming reactions). Leading references are provided to natural product synthesis that have been accomplished using a given reaction as a key step. In addition to tables of examples that show high selectivity, a transition state analysis is presented to explain - to the current level of understanding - the stereoselectivity of each reaction. In one case (Cram's rule) the evolution of the current theory is detailed from its first tentative (1952) postulate to the current Felkin-Anh-Heathcock formalism. For other reactions, only the currently accepted rationale is presented. Examination of these rationales also exposes the weaknesses of current theories, in that they cannot always explain the experimental observations. These shortcomings provide a challenge for future mechanistic investigations.
Download or read book Structure Elucidation by Modern NMR written by Helmut Duddeck and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last few years, routine applications of NMR (Nuclear Magnetic Resonance) techniques have developed at a tremendous pace. The latest generation of spectrometers have enabled chemists to perform new types of experiments, such as spinlock and inverse-detected methods. This third, revised and expanded edition introduces the latest methodologies and incorporates them into new exercises.
Download or read book Chemical Physics Research Trends written by Samuel V. Arnold and published by Nova Publishers. This book was released on 2007 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical physics and physical chemistry are closely related fields of study. Together they are distinguished from other disciplines by the incredible range of problems addressed by their practitioners. An effective physical chemist or chemical physicist is a "jack-of-all-trades", able to apply the principles and techniques of the field to everything from high-tech materials to biology. Just as the fields of chemistry and physics have expanded, so have chemical physics subject areas, which include polymers, materials, surfaces/interfaces, and biological macromolecules, along with the traditional small molecule and condensed phase systems. This book gathers important research from around the world.
Download or read book The Total Synthesis of Natural Products Volume 8 written by John ApSimon and published by John Wiley & Sons. This book was released on 1992-04-16 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic chemistry's innovative breadth is especially noteworthy in the area of natural products synthesis. Since the early 1970s, this landmark chemical reference has been documenting the newest and most important of these, in a readily understood format, that clearly traces each of their synthetic routes. Volume Eight, the latest in the series, contains a long-awaited look at the synthesis of tri- and tetracyclic diterpenes, along with the synthesis of naturally occurring quinones. Recent interest in the biologically important polysaccharides has led to a detailed consideration of that compound class. Finally, this new volume contains a look at the strategies and methods specific to natural products containing the spiroketal functional group. The Total Synthesis of Natural Products, Volume Eight, continues the meticulous work of the series, providing chemists with an entirely up-to-date and convenient guide to the critical new syntheses essential to organic chemistry's continuing evolution.
Download or read book Steric and Stereoelectronic Effects in Organic Chemistry written by Veejendra K. Yadav and published by Springer. This book was released on 2016-06-06 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The steric and stereoelectronic effects control the rate and stereochemical outcome of reactions. Hence, a decent understanding of the related concepts is essential for successful synthetic planning. The book attempts to address several important issues related to these concepts in a simplified manner, and is intended for graduate students. It lays stress on the important aspects of steric and stereoelectronic effects and their control on the conformational profile and reactivity features. The book covers the geometrical requirements for reactions at saturated and unsaturated carbons in both cyclic and acyclic systems, and the resultant stereochemical features. The aspect of geometrical flexibility is also covered with a few examples involving intramolecular reactions. It deals with the facial selectivity of nucleophilic additions to acyclic and cyclic carbonyl compounds, and explains how the steric and stereoelectronic effects control the same. The work comments on allylic strains and their stereochemical control on different reactions with the related conformational control. It is a must read to understand the control elements, the prominent among these elements are spiro-conjugation, periselectivity, torquoselectivity, a-effect, Hammett’s substituent constants, Hammond postulate, and Curtin-Hammett principle.
