Download or read book Manipulating Electron Transfer Reactions from Micro to Preparative Scale written by Matthew Duane Graaf and published by . This book was released on 2015 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: The utilization of electron transfer reactions has allowed the transformation of a variety of substrates from polymer surfaces to highly functionalized organic molecules. The intricacies of these electron transfer reactions have been utilized to develop a new platform for building and studying addressable molecular libraries as they interact with biological targets. As a low cost, reusable alternative to other methods of these studying binding interactions, microelectrode arrays are beginning to gain traction with the scientific community as we continually push the limits of their potential. Additionally, the electron transfer techniques used to build the molecular libraries can be expanded to the preparative-scale synthesis of complex molecules. The goal of this thesis is to demonstrate the significance of the advancements made towards these areas. First, we discuss the development of a tunable polymer surface by taking advantage of a rapid ligand exchange on a boronic ester polymer. This allows us to reversibly modify the surface of an electrode for pacification towards any biological system being monitored. This is followed by the development of a copper-mediated, chemoselective coupling of peptides to the surface of the polymer-coated electrode. This method builds a molecular library with a selective orientation, which is critical for understanding structure-activity relationships of molecule coupled to a surface. Additionally, we demonstrate the ability to directly couple peptides that contain common bioorthogonal functionalities such as an azide and acetylene for "click" chemistry. These techniques further expand our extensive synthetic toolbox for building molecular libraries. This work of building molecules and selectively modifying electrode surfaces comes to fruition with the analysis of a cyclic peptide, v107 against a vascular endothelial growth factor protein that has been difficult to detect by other analytical techniques. This exciting work helps cement the efforts made by our group over the last several years in developing the microelectrode array-based binding studies as a viable alternative. Finally, the utility of electron transfer reactions is shifted towards preparative-scale synthesis of highly functionalized ring system. After the improved synthesis of a widely-used ligand, we apply photoredox catalysis to our previous work on anodic oxidation chemistry to better understand the mechanism of radical cyclizations.
Download or read book Green Oxidation in Organic Synthesis written by Ning Jiao and published by John Wiley & Sons. This book was released on 2019-07-13 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt: A valuable introduction to green oxidation for organic chemists interested in discovering new strategies and new reactions for oxidative synthesis Green Oxidation in Organic Synthesis provides a comprehensive introduction and overview of chemical preparation by green oxidative processes, an entry point to the growing journal literature on green oxidation in organic synthesis. It discusses both experimental and theoretical approaches for the study of new catalysts and methods for catalytic oxidation and selective oxidation. The book highlights the discovery of new reactions and catalysts in recent years, discussing mechanistic insights into the green oxidative processes, as well as applications in organic synthesis with significant potential to have a major impact in academia and industry. Chapters are organized according to the functional groups generated in the reactions, presenting interesting achievements for functional group formation by green oxidative processes with O2, H2O2, photocatalytic oxidation, electrochemical oxidation, and enzymatic oxidation. The mechanisms of these novel transformations clearly illustrated. Green Oxidation in Organic Synthesis will serve as an excellent reference for organic chemists interested in discovering new strategies for oxidative synthesis which address the priorities of green and sustainable chemistry.
Download or read book Biotransformations in Organic Chemistry written by Kurt Faber and published by Springer. This book was released on 2017-11-26 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This well-established textbook on biocatalysis provides a basis for undergraduate and graduate courses in modern organic chemistry, as well as a condensed introduction into this field. After a basic introduction into the use of biocatalysts—principles of stereoselective transformations, enzyme properties and kinetics—the different types of reactions are explained according to the 'reaction principle', such as hydrolysis, reduction, oxidation, C–C bond formation, etc. Special techniques, such as the use of enzymes in organic solvents, immobilization techniques, artificial enzymes and the design of cascade-reactions are treated in a separate section. A final chapter deals with the basic rules for the safe and practical handling of biocatalysts. The use of biocatalysts, employed either as isolated enzymes or whole microbial cells, offers a remarkable arsenal of highly selective transformations for state-of-the-art synthetic organic chemistry. Over the last two decades, this methodology has become an indispensable tool for asymmetric synthesis, not only at the academic level, but also on an industrial scale. In this 7th edition new topics have been introduced which include alcohol and amine oxidases, amine dehydrogenases, imine reductases, haloalkane dehalogenases, ATP-independent phosphorylation, Michael-additions and cascade reactions. This new edition also emphasizes the use of enzymes in industrial biotransformations with practical examples.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Technical Publications written by United States. Food and Drug Administration and published by . This book was released on 1971 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each no. represents the results of the FDA research programs for half of the fiscal year.
Download or read book Macromolecular Syntheses written by Charles Gilbert Overberger and published by . This book was released on 2002 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an up-to-date collection of presentations and posters given at a tutorial and workshop sponsored by the Polymer Division of the American Chemical Society. The material included encompasses recent research results, overviews of critical areas and short presentations in the form of posters and preprints. The book is targeted at established workers in the field of fluoropolymers as well as those wishing to develop a quick understanding of current knowledge and trends in this important field.
Download or read book Organic Electrochemistry written by Ole Hammerich and published by CRC Press. This book was released on 2015-09-22 with total page 1706 pages. Available in PDF, EPUB and Kindle. Book excerpt: Praise for the Fourth Edition"Outstanding praise for previous editions.the single best general reference for the organic chemist."-Journal of the Electrochemical Society"The cast of editors and authors is excellent, the text is, in general, easily readable and understandable, well documented, and well indexed those who purchase the book will be sa
Download or read book Book of Abstracts written by American Chemical Society. Meeting and published by . This book was released on 1985 with total page 1398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technology Transfer in Biotechnology written by Udo Kragl and published by Springer Science & Business Media. This book was released on 2005-02-11 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Download or read book Histochemistry Theoretical and Applied Preparative and optical technology written by Anthony Guy Everson Pearse and published by . This book was released on 1980 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the National Institute of Standards and Technology Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1994 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Methods for Biologically Active Molecules written by Elisabetta Brenna and published by John Wiley & Sons. This book was released on 2013-08-29 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This useful reference focuses on the currently available toolbox of bio-catalysed reductions of C=O, C=C and formal C=N bonds to show which transformations can be reliably used in manufacturing processes and which still require improvements. Following an introductory chapter, chapters 2-4 present the synthetic strategies that are currently available for the reduction of C=C and C=O bonds and for reductive amination, by means of whole-cell catalysts and isolated enzymes. Chapters 5-7 go on to describe the improvements achieved thus far, illustrating the current versatility of enzymes in organic synthesis. Chapters 8-12 present the improvements brought about by the optimization of reaction conditions, and the use of particular synthetic sequences. The final chapter describes practical applications of bio-reductions for the synthesis of active pharmaceutical ingredients. With its excellent and comprehensive overview, this book will be of great interest to those working in academia and industry. From the contents: * Development of Sustainable Biocatalyzed Reduction Processes for Organic Chemists * Reductases: From Natural Diversity to Biocatalysis and Emerging Enzymatic Activities. * Synthetic Strategies Based on C=C Bioreductions * Synthetic Strategies Based on C=O Bioreductions * Development of Novel Enzymes for the Improved Reduction of C=C Double Bonds * Development of Novel Enzymes for the Improved Reduction of C=O Double Bonds * Synthetic Applications of Aminotransferases * Strategies for Cofactor Regeneration in Biocatalyzed Reductions * Effects of Solvent System and Substrate Loading in Bioreduction * Perspectives in the Use of In-Situ Product Removal (ISPR) Techniques in Bioreductions * Multi-Enzymatic Cascade Reactions Based on Reduction Processes * Relevant Practical Applications of Bioreduction Processes in the Synthesis of Active Pharmaceutical Ingredients
Download or read book Canadian Journal of Chemistry written by and published by . This book was released on 1977 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Association of Official Analytical Chemists written by and published by . This book was released on 1971 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparative Chromatography written by H. Schmidt-Traub and published by John Wiley & Sons. This book was released on 2012-09-27 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely revised and substantially extended to reflect the developments in this fast-changing field. It retains the interdisciplinary approach that elegantly combines the chemistry and engineering involved to describe the conception and improvement of chromatographic processes. It also covers recent advances in preparative chromatographic processes for the separation of "smaller" molecules using standard laboratory equipment as well as the detailed conception of industrial chemical plants. The increase in biopharmaceutical substances is reflected by new and revised chapters on different modifications of continuous chromatography as well as ion-exchange chromatography and other separation principles widely used in biochromatography. Following an introductory section on the history of chromatography, the current state of research and the design of chromatographic processes, the book goes on to define the general terminology. There then follow sections on stationary phases, selection of chromatographic systems and process concepts. A completely new chapter deals with engineering and operation of chromatographic equipment. Final chapters on modeling and determination of model parameters as well as model based design, optimization and control of preparative chromatographic processes allow for optimal selection of chromatographic processes. Essential for chemists and chemical engineers in the chemical, pharmaceutical, and food industries.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 1174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
