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A comprehensive guide to carbon inside Earth - its quantities, movements, forms, origins, changes over time and impact on planetary processes. This title is also available as Open Access on Cambridge Core.

Product Details :

Genre Book : Nature
Author Book : Beth N. Orcutt
Publisher : Cambridge University Press
Release Book : 2019-10-31
Download Book : 678 Pages
ISBN-10 : 9781108477499


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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. Authoritative glossary to aid understanding of stereochemical terminology Explanations of the key factors influencing stereoselectivity with numerous examples, organized by reaction type A handy reference guide to the literature of asymmetric synthesis for practitioners in the field

Product Details :

Genre Book : Science
Author Book : Robert E. Gawley
Publisher : Elsevier
Release Book : 2012
Download Book : 555 Pages
ISBN-10 : 9780080448602


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Genre Book :
Author Book : John D. Roberts
Publisher :
Release Book : 1979
Download Book : 596 Pages
ISBN-10 : OCLC:927630476


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The objective of this serial is to present considered reviews on the quantitative study of organic compounds and their behavior--physical organic chemistry in its broadest sense--in a manner accessible to a general readership.

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Genre Book : Science
Author Book :
Publisher : Academic Press
Release Book : 1999-09-23
Download Book : 544 Pages
ISBN-10 : 9780080581729


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Genre Book : Chemistry, Organic
Author Book :
Publisher :
Release Book : 1902
Download Book : Pages
ISBN-10 : WISC:89071909824


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Emphasizing the applications of chemistry and minimizing complicated mathematics, GENERAL, ORGANIC, AND BIOLOGICAL CHEMISTRY, 7E is written throughout to help students succeed in the course and master the biochemistry content so important to their future careers. The Seventh Edition’s clear explanations, visual support, and effective pedagogy combine to make the text ideal for allied health majors. Early chapters focus on fundamental chemical principles while later chapters build on the foundations of these principles. Mathematics is introduced at point-of-use and only as needed. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.

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Genre Book : Science
Author Book : H. Stephen Stoker
Publisher : Nelson Education
Release Book : 2015
Download Book : 1232 Pages
ISBN-10 : 9781305686182


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This book provides a comprehensive review of the application of 17O NMR spectroscopy to organic chemistry. Topics include the theoretical aspects of chemical shift, quadrupolar and J coupling; 17O enrichment; the effect of steric interactions on 17O chemical shifts of functional groups in flexible and rigid systems; the application of 17O NMR spectroscopy to hydrogen bonding investigations; mechanistic problems in organic and bioorganic chemistry; and 17O NMR spectroscopy of oxygen monocoordinated to carbon in alcohols, ethers, and derivatives. Recent results that show correlations between molecular geometry, determined by X-ray studies and estimated by molecular mechanics calculations, and 17O chemical shifts are also covered. 17O Spectroscopy in Organic Chemistry provides important reference information for organic chemists and other scientists interested in 17O NMR spectroscopy as a tool for obtaining new structural and chemical data about organic molecules.

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Genre Book : Science
Author Book : David W. Boykin
Publisher : CRC Press
Release Book : 2020-08-26
Download Book : 336 Pages
ISBN-10 : 9781000103090


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Product Details :

Genre Book : Chemistry, Organic
Author Book : Henry Edward Armstrong
Publisher :
Release Book : 1876
Download Book : 349 Pages
ISBN-10 : MINN:31951000935684N


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Product Details :

Genre Book : Chemistry
Author Book :
Publisher :
Release Book : 1900
Download Book : Pages
ISBN-10 : UCAL:$B618512


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This is part A of a new edition of a two-volume text on organic chemistry that aims to solidify and extend the student's understanding of basic concepts and to illustrate how structural changes influence mechanism and reactivity.

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Genre Book : Science
Author Book : Francis A. Carey
Publisher : Springer Science & Business Media
Release Book : 2000
Download Book : 823 Pages
ISBN-10 : 0306462435