Differentiation of Chiral Compounds Using NMR Spectroscopy
Differentiation of Chiral Compounds Using NMR Spectroscopy

Author: Thomas J. Wenzel

Publisher: John Wiley & Sons

Published: 2018-06-01

Total Pages: 1303

ISBN-13: 1119324777

DOWNLOAD EBOOK

An updated guide to the most current information available for determining how to use NMR spectroscopy to differentiate chiral compounds Differentiation of Chiral Compounds Using NMR Spectroscopy offers a thoroughly revised second edition to the essential volume that puts the focus on the chiral systems that are commercially available and have been widely vetted for use in NMR spectroscopy. The text covers a broad range of reagents that make it possible to determine the enantiomeric purity and assign the absolute configuration of many classes of compounds. Comprehensive in scope, the text describes the chiral NMR differentiating agents as derivatizing agents, solvating agents, metal-based reagents and liquid crystals and gels, and explains the range and types of compounds for which they can be used for analysis. New to this edition are the most recent findings in the field as well as the development of advanced NMR measurement techniques that allow for the simplification of complex spectra resulting in more readily identified enantiodifferentiation. This important resource: Includes the most recent coverage of a large range of compounds that can be analyzed using chiral NMR reagents Explores the use of chiral NMR reagents and explains their relationship to the stereochemistry of the analyzed molecules Offers the essential information needed to help decide which method is the best NMR method to apply to a class or molecules Contains experimental strategies for using the reagents that are likely to improve the quality of the results Differentiation of Chiral Compounds Using NMR Spectroscopy is a comprehensive guide designed for investigators planning to use NMR spectroscopy to determine enantiomeric purity or assign the absolute configuration of a compound.

Differentiation of Chiral Compounds Using NMR Spectroscopy
Differentiation of Chiral Compounds Using NMR Spectroscopy

Author: Thomas J. Wenzel

Publisher: John Wiley & Sons

Published: 2018-07-11

Total Pages: 606

ISBN-13: 1119323916

DOWNLOAD EBOOK

An updated guide to the most current information available for determining how to use NMR spectroscopy to differentiate chiral compounds Differentiation of Chiral Compounds Using NMR Spectroscopy offers a thoroughly revised second edition to the essential volume that puts the focus on the chiral systems that are commercially available and have been widely vetted for use in NMR spectroscopy. The text covers a broad range of reagents that make it possible to determine the enantiomeric purity and assign the absolute configuration of many classes of compounds. Comprehensive in scope, the text describes the chiral NMR differentiating agents as derivatizing agents, solvating agents, metal-based reagents and liquid crystals and gels, and explains the range and types of compounds for which they can be used for analysis. New to this edition are the most recent findings in the field as well as the development of advanced NMR measurement techniques that allow for the simplification of complex spectra resulting in more readily identified enantiodifferentiation. This important resource: Includes the most recent coverage of a large range of compounds that can be analyzed using chiral NMR reagents Explores the use of chiral NMR reagents and explains their relationship to the stereochemistry of the analyzed molecules Offers the essential information needed to help decide which method is the best NMR method to apply to a class or molecules Contains experimental strategies for using the reagents that are likely to improve the quality of the results Differentiation of Chiral Compounds Using NMR Spectroscopy is a comprehensive guide designed for investigators planning to use NMR spectroscopy to determine enantiomeric purity or assign the absolute configuration of a compound.

Differentiation of Enantiomers II
Differentiation of Enantiomers II

Author: Volker Schurig

Publisher: Springer

Published: 2014-07-08

Total Pages: 354

ISBN-13: 3319037161

DOWNLOAD EBOOK

Chiral Derivatizing Agents, Macrocycles, Metal Complexes and Liquid Crystals for Enantiomer Differentiation in NMR Spectroscopy: Thomas J. Wenzel. Chiral NMR Solvating Additives for Differentiation of Enantiomers: Gloria Uccello-Barretta and Federica Balzano. Chiral Sensor Devices for Differentiation of Enantiomers: Kyriaki Manoli, Maria Magliulo and Luisa Torsi. Enantiopure supramolecular cages: synthesis and chiral recognition properties: Thierry Brotin, Laure Guy, Alexandre Martinez, Jean-Pierre Dutasta. Interconversion of Stereochemically Labile Enantiomers (Enantiomerization) : Oliver Trapp. Anisotropy Spectra for Enantiomeric Differentiation of Biomolecular Building Blocks: A.C. Evans, C. Meinert, J.H. Bredehöft, C. Giri, N.C. Jones, S.V. Hoffmann, U.J. Meierhenrich. Self-disproportionation of Enantiomers of Enantiomerically Enriched Compounds: Alexander E. Sorochinsky and Vadim A. Soloshonok.

Discrimination of Chiral Compounds Using NMR Spectroscopy
Discrimination of Chiral Compounds Using NMR Spectroscopy

Author: Thomas J. Wenzel

Publisher: John Wiley & Sons

Published: 2007-04-13

Total Pages: 576

ISBN-13: 0471763527

DOWNLOAD EBOOK

A comprehensive overview of the use of NMR spectroscopy for chiral discrimination Discrimination of Chiral Compounds Using NMR Spectroscopy concisely covers the broad array of reagents that make it possible to determine the optical purity and assign the absolute configuration of many classes of compounds. It describes chiral NMR derivatizing agents, solvating agents, metal-based reagents, and liquid crystals and discusses the range and types of compounds for which they can be used for analysis. After an overview of chiral reagents and methodologies, this reference: * Includes comprehensive coverage of the chiral reagents that have been reported * Catalogs the range of compounds for which different reagents have been shown to be effective * Includes specialty categories such as liquid crystals, ionic liquids, and the formation of chiral aggregates from achiral building blocks that do not fit into the broader categories * Offers experimental strategies for using the reagents that are likely to improve the quality of the results This guide describes the various systems and their overall utility, but goes further to show the full scope of the field as a way of guiding investigations into the optimal chiral reagents for use in NMR spectroscopy. It's a practical reference for organic chemists in the pharmaceutical industry, academia, and other areas, NMR spectroscopists, and researchers involved in the isolation and structure determination of natural products.

Differentiation of Enantiomers I
Differentiation of Enantiomers I

Author: Volker Schurig

Publisher: Springer

Published: 2013-12-16

Total Pages: 286

ISBN-13: 3319032399

DOWNLOAD EBOOK

The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.

Stereo-Differentiating reactions
Stereo-Differentiating reactions

Author: Yoshiharu Izumi

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 345

ISBN-13: 0323155030

DOWNLOAD EBOOK

Stereo-Differentiating Reactions: The Nature of Asymmetric Reactions provides an introduction to asymmetric reactions. It brings together synthetic organic chemistry, stereochemistry, group theory, the theory of optical rotation, experimental methods, etc., all of which are basic to the study of stereo-differentiating reactions, to form a unified approach based on the new concept of "differentiation." The authors hope that the value of the new concept, which is rather more complex than conventional treatments of asymmetric reactions, will become clear in the present book. This new concept should be useful in many fields of study, not only the development of stereo-differentiating reactions, but also in the study of general reaction mechanisms in organic chemistry. The book contains nine chapters and begins with a historical background of studies on asymmetric reactions. This is followed by separate chapters on molecular symmetry and chirality; nomenclature for chirality, prochirality, and stereo-differentiating reactions; the mechanisms of stereo-differentiating reactions; methods for studying stereo-differentiating reactions; and the basic principle of optical activity.

Applications of NMR Spectroscopy: Volume 9
Applications of NMR Spectroscopy: Volume 9

Author: Atta-ur-Rahman

Publisher: Bentham Science Publishers

Published: 2021-12-29

Total Pages: 222

ISBN-13: 9815039369

DOWNLOAD EBOOK

Applications of NMR Spectroscopy is a book series devoted to publishing the latest advances in the applications of nuclear magnetic resonance (NMR) spectroscopy in various fields of organic chemistry, biochemistry, health and agriculture. The ninth volume of the series features reviews that highlight NMR spectroscopic techniques in microbiology, food science, pharmaceutical analysis and cancer diagnosis. The reviews in this volume are: - NMR spectroscopy for the characterization of photoprotective compounds in cyanobacteria - Coffee assessment using 1H NMR spectroscopy and multivariate data analysis: a review - Evaluation of structure-property relationship of coconut shell lignins by NMR spectroscopy: from biorefinery to high-added value products - Application of NMR spectroscopy in chiral recognition of drugs - NMR-based metabolomics: general aspects and applications in cancer diagnosis

Unambiguous Full Multinuclear NMR Assignment of 4-amino-1,1,2,2,9,9,10,10-octafluoro[2.2]paracycylophane & NMR Differentiation of Its Enantiomers, and Related Compounds
Unambiguous Full Multinuclear NMR Assignment of 4-amino-1,1,2,2,9,9,10,10-octafluoro[2.2]paracycylophane & NMR Differentiation of Its Enantiomers, and Related Compounds

Author: Sheryl Rabinowitz

Publisher:

Published: 2013

Total Pages: 127

ISBN-13:

DOWNLOAD EBOOK

For the first time the full multinuclear 1H, 13C, and 19F assignments were established for 4-amino-1,1,2,2,9,9,10,10-octafluoro[2.2]paracyclophane (OFP-NH2). These were achieved by using a combination of 1D, COSY, and HETCOR NMR techniques. The assignments were later confirmed by nOe experiments. The interaction of OFP-NH2 with different chiral shift reagents was explored, and it was shown that it is possible to clearly detect both enantiomers of the planar chiral OFP-NH2 (in both the 1H and 19F NMR). This method of chiral discrimination was also shown to be applicable to other similar chiral OFP derivatives.

Chirality in Drug Design and Development
Chirality in Drug Design and Development

Author: Indra K. Reddy

Publisher: CRC Press

Published: 2004-03-15

Total Pages: 406

ISBN-13: 0824751094

DOWNLOAD EBOOK

Covering every essential element in the development of chiral products, this reference provides a solid overview of the formulation, biopharmaceutical characteristics, and regulatory issues impacting the production of these pharmaceuticals. It supports researchers as they evaluate the pharmacodynamic, pharmacokinetic, and toxicological characteristics of specific enantiomers and chiral drug compounds and addresses in one convenient reference all the major challenges pertaining to drug chirality that have been neglected in the literature. Chirality in Drug Design and Development collects the latest studies from an interdisciplinary team of experts on chiral drug design.

High-resolution NMR Techniques in Organic Chemistry
High-resolution NMR Techniques in Organic Chemistry

Author: T. Claridge

Publisher: Elsevier

Published: 1999-12-24

Total Pages: 408

ISBN-13: 9780080427997

DOWNLOAD EBOOK

From the initial observation of proton magnetic resonance in water and in paraffin, the discipline of nuclear magnetic resonance has seen unparalleled growth as an analytical method. Modern NMR spectroscopy is a highly developed, yet still evolving, subject which finds application in chemistry, biology, medicine, materials science and geology. In this book, emphasis is on the more recently developed methods of solution-state NMR applicable to chemical research, which are chosen for their wide applicability and robustness. These have, in many cases, already become established techniques in NMR laboratories, in both academic and industrial establishments. A considerable amount of information and guidance is given on the implementation and execution of the techniques described in this book.