Download or read book Studies in Non phenolic Oxidative Coupling written by H. M. L. Davies and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies in Natural Products Chemistry written by Atta-ur Rahman and published by Elsevier. This book was released on 1998-12-03 with total page 1365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural Products Chemistry continues to grow at an increasing pace and this growth is reflected in the present volume of Studies in Natural Products Chemistry, which is the 20th of this series. The first 20 volumes were largely devoted to structure and synthesis of various classes of natural products, irrespective of their bioactivity. Subsequent volumes of this series will however be devoted to the chemistry of bioactive natural products and will therefore a departure from the earlier volumes. The present volume contains contributions from a number of eminent scientists and covers interesting reviews on terpenes, alkaloids and other types of natural products reported from terrestrial and marine sources. Comprehensive indexes covering all the 20 volumes have been prepared which include a Cumulative General Subject Index along with more focused Cumulative Indices on Organic Synthesis, Pharmacological Activity and Biological Source. This comprehensive indexing of the volumes should make the entire series much more valuable and user-friendly.

Download or read book Studies on Oxidative Coupling written by Ronald Burton and published by . This book was released on 1965 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lignans written by David Barker and published by MDPI. This book was released on 2019-05-03 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignans are a class of natural products found mainly in plants. They have a wide variety of structures and exhibit a range of potent biological activities. Lignans are also well-known components of a number of widely eaten foods and are frequently studied for their dietary impact. Owing to these factors, lignans have been extensively studied by scientists from a large number of disciplines. This collection of research and review articles describes topics ranging in scope from the recent isolation and structural elucidation of new lignans, strategies towards the chemical synthesis of lignans, assessment of their biological activities and potential for further therapeutic development. Research showing the impact of lignans in the food and agricultural industries is also presented.

Download or read book Part I The Confluence of Steric and Electronic Effects in N heterocyclic Carbene catalyzed Processes written by Scott Edward Allen and published by . This book was released on 2013 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part II. The asymmetric oxidative coupling of phenols remains a significant challenge in organic chemistry. Binuclear oxovanadium amino acid Schiff base catalysts developed by Gong and Sasai for naphthol coupling were determined to be batch-dependent when applied to phenol coupling. Optimization of catalyst preparation diminished this problem.

Download or read book Ni and Fe Based Cross Coupling Reactions written by Arkaitz Correa and published by Springer. This book was released on 2016-11-26 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. 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.

Download or read book Electrochemistry for Materials Science written by Walfried Plieth and published by Elsevier. This book was released on 2008-01-08 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the principles of electrochemistry with a special emphasis on materials science. This book is clearly organized around the main topic areas comprising electrolytes, electrodes, development of the potential differences in combining electrolytes with electrodes, the electrochemical double layer, mass transport, and charge transfer, making the subject matter more accessible.In the second part, several important areas for materials science are described in more detail. These chapters bridge the gap between the introductory textbooks and the more specialized literature. They feature the electrodeposition of metals and alloys, electrochemistry of oxides and semiconductors, intrinsically conducting polymers, and aspects of nanotechnology with an emphasis on the codeposition of nanoparticles.This book provides a good introduction into electrochemistry for the graduate student. For the research student as well as for the advanced reader there is sufficient information on the basic problems in special chapters. The book is suitable for students and researchers in chemistry, physics, engineering, as well as materials science. - Introduction into electrochemistry- Metal and alloy electrodeposition- Oxides and semiconductors, corrosion- Intrinsically conducting polymers- Codeposition of nanoparticles, multilayers

Download or read book Oxidative Cross Coupling Reactions written by Aiwen Lei and published by John Wiley & Sons. This book was released on 2016-11-14 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first handbook on this emerging field provides a comprehensive overview of transition metal-catalyzed coupling reactions in the presence of an oxidant. Following an introduction to the general concept and mechanism of this reaction class, the team of authors presents chapters on C-C cross-coupling reactions using organometallic partners, C-Heteroatom bond forming reactions via oxidative couplings, and C-H couplings via C-H activation. The text also covers such groundbreaking topics as recent achievements in the fields of C-C and C-X bond formation reactions as well as C-H activation involving oxidative couplings. With its novel and concise approach towards important building blocks in organic chemistry and its focus on synthetic applications, this handbook is of great interest to all synthetic chemists in academia and industry alike.

Download or read book Oxidative Coupling of Sinapic Acid written by Kerri-Ann S. Lee and published by . This book was released on 1997 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Advancements in Pharmaceutical Nutritional and Industrial Enzymology written by Bharati, Shashi Lata and published by IGI Global. This book was released on 2018-05-11 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enzymes have interesting applications in our biological system and act as valuable biocatalysts. Their various functions allow enzymes to develop new drugs, detoxifications, and pharmaceutical chemistry. Research Advancements in Pharmaceutical, Nutritional, and Industrial Enzymology provides emerging research on biosynthesis, enzymatic treatments, and bioengineering of medicinal waste. While highlighting issues such as structural implications for drug development and food applications, this publication explores information on various applications of enzymes in pharmaceutical, nutritional, and industrial aspects. This book is a valuable resource for medical professionals, pharmacists, pharmaceutical companies, researchers, academics, and upper-level students seeking current information on developing scientific ideas for new drugs and other enzymatic advancements.

Download or read book Oxidation in Organic Chemistry 5 B written by Walter Trahanovsky and published by Elsevier. This book was released on 2012-12-02 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Chemistry, Volume 5-B: Oxidation in Organic Chemistry, Part B presents some of the most common and significant reactions in organic chemistry, which involves oxidation and reduction. This book provides detailed discussions of specific oxidants or topics concerning oxidation of organic compounds. Organized into four chapters, this volume begins with an overview of the specific oxidants, including thallium(III), cupric ion, and ruthenium tetroxide. This text then presents the scope and preparative use as well as the mechanistic aspects of the various oxidations. Other chapters consider the significance of phenolic oxidative coupling in nature's biosynthetic pathways. This book discusses as well the various mechanistic alternatives for the enzymic and non-enzymic reactions, which will lead to a fuller understanding of the enzymic mechanisms and the greater synthetic utility of this reaction. The final chapter deals with the oxidative coupling of phenols. This book is a valuable resource for organic chemists and research workers.

Download or read book Cobalt catalyzed Aerobic Oxidative Cross coupling of Phenols written by Hagai Reiss and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A catalyst design approach based on products' selectivity was adopted to address chemoselectivity issues in the oxidative coupling of phenols. As part of this study, anaerobic oxidative catalytic system that is based on a cobalt(II)[salen] complex in are cyclable 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP) was developed. The efficient waste-free reaction exhibited a unique cross-coupling selectivity, therefore offering a sustainable entry to non-symmetric biphenols. Our mechanistic studies imply that the coupling involves the reaction between a liberatedphenoxyl radical and a ligated 2-naphthoxyl radical. Furthermore, we demonstrated that the cobalt[salen] complexexhibits high catalase-like activity; it mediates rapid disproportionation of H2O2 intoH2O and O2 molecule. As a result, oxygen alone serves as the terminal oxidant in this type of oxidative coupling reaction.-- Abstract.

Download or read book Oxidative Coupling of Sinapic Acid written by and published by . This book was released on 1905 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxidative coupling of phenolic compounds is an important method used by synthetic organic chemists for the synthesis of various lignans. It has also been implicated in lignan biosynthesis. Recently, it was discovered that sinapic acid in a basic buffer in the presence of oxygen was quantitatively converted to the lignan, thomasidioic acid. This interesting reaction formed the basis for several studies described in this thesis. The scope of the oxidation reaction described above was studied by applying t e same reaction conditions to other 4-hydroxycinnamic acids (ferulic, caffeic and coumaric acids). The efficient oxidative coupling/cyclization appears to be limited to only sinapic acid. Oxidation of sinapic acid in more strongly basic solution (0.1 N KOH) unexpectedly produced 6-hydroxy-5,7-dimethoxy-2-naphthoic acid. The formation of this compound appeared to involve the secondary oxidation of thomasidioic acid. As well as studying the synthetic scope of the oxidative coupling of para-hydroxycinnamic acids, the details of the mechanism of this interesting reaction were also studied. Various aspects of the reaction were studied, including the nature of the intermediates involved and stoichiometry of the reaction. Oxidizing agents other than oxygen were also used in order to provide more insight into the mechanism of the oxidative coupling. The oxidative coupling of esters of sinapic acid has also been studied. For the reaction of methyl sinapate, some of the expected dimethyl thomasidioate was formed in a mixture with a diarylbutadiene diester in a 1:2 ratio. For the reaction of (methyl (R)-mandelyl) sinapate in basic buffer, the products were a mixture of isomers of the diaryl butadiene product. These results indicate that the direct asymmetric synthesis of aryltetralins by oxidative coupling of chiral cinnamate esters is probably not feasible.

Download or read book U S Geological Survey Water supply Paper written by and published by . This book was released on 1982 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Advances in Polyphenol Research Volume 6 written by Heidi Halbwirth and published by John Wiley & Sons. This book was released on 2019-01-11 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant polyphenols are secondary metabolites that constitute one of the most common and widespread groups of natural products. They are crucial constituents of a large and diverse range of biological functions and processes, and provide many benefits to both plants and humans. Many polyphenols, from their structurally simplest representatives to their oligo/polymeric versions, are notably known as phytoestrogens, plant pigments, potent antioxidants, and protein interacting agents. This sixth volume of the highly regarded Recent Advances in Polyphenol Research series is edited by Heidi Halbwirth, Karl Stich, Véronique Cheynier and Stéphane Quideau, and is a continuance of the series’ tradition of compiling a cornucopia of cutting-edge chapters, written by some of the leading experts in their respective fields of polyphenol sciences. Highlighted herein are some of the most recent and pertinent developments in polyphenol research, covering such major areas as: Chemistry and physicochemistry Biosynthesis, genetics & metabolic engineering Roles in plants and ecosystems Food, nutrition & health Applied polyphenols This book is a distillation of the most current information, and as such, will surely prove an invaluable source for chemists, biochemists, plant scientists, pharmacognosists and pharmacologists, biologists, ecologists, food scientists and nutritionists.

Download or read book Fossil Energy Update written by and published by . This book was released on 1983 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phenolic Compounds written by Marcos Soto-Hernández and published by BoD – Books on Demand. This book was released on 2017-03-15 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phenolic compounds as a large class of metabolites found in plants have attracted attention since long time ago due to their properties and the hope that they will show beneficial health effects when taken as dietary supplements. This book presents the state of the art of some of the natural sources of phenolic compounds, for example, medicinal plants, grapes or blue maize, as well as the modern methods of extraction, quantification, and identification, and there is a special section discussing the treatment, removal, and degradation of phenols, an important issue in those phenols derived from the pharmaceutical or petrochemical industries.