Download or read book Synthesis of Barbituric Acid and 1 3 dimethylbarbituric Acid Derivatives written by Chao-tze Ho and published by . This book was released on 1976 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of Barbituric Acid Derivatives written by John James Walker and published by . This book was released on 1973 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation of Pyridinium and Diaminocarbonium Barbituric Acid Ylides written by Frederic Douelle and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Through NMR experiments of the reaction of barbituric acid with carbodiimide, a general synthetic procedure for the preparation of 5-diaminomethylenebarbiturates (DABA) was developed. This procedure is very simple and applicable to the preparation of large quantities of DABA derivatives. through the X-ray structural study of one of the DABA derivative, it was established that these compounds have a ylide-type structure with strong charge separation inside the molecule. 5-Ylide-pyridinium-methyl barbituric acid derivatives were investigated with the isolation of 4-dimethylamino-1-(2,4,6-trioxo-hexahydro-pyridin-5-ylide-methyl)-pyridinium as well as its corresponding 1,3-dimethylbarbituric acid derivative with quantitative yields. An alternative approach was attempted in order to prepare chiral center between the charge separation. The extreme instability of the derivatives under investigation afforded the unique isolation of 4-dimethylamino-1-[(1,3-dimethyl-2,4,6-trioxo-hexahydro-pyridin-5-yl)-phenyl-methyl]-pyridinium in quantitative yield.
Download or read book Novel Imidazol and Barbituric Acid Derivatives Carbene Fragments written by Kamal Sweidan and published by LAP Lambert Academic Publishing. This book was released on 2014-06-02 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Derivatives of 1,3-dialkylbarbituric acid play an important role in medicinal and pharmaceutical chemistry as well as useful precursors in the preparation of new heterocyclic compounds. On the other hand, stable heterocyclic carbenes have been in the center of our interest as strong nucleophiles and as selective deprotonation reagents. Further, the resulted imidazolium compounds play an important role in the construction of ionic liquids. Various types of imidazol-2-ylidene and 1,3 dimethylbarbituric acid organic derivatives have been prepared. These new imidazol-2-ylidene derivatives were obtained by the nucleophilic substitution reactions of the imidazol-2-ylidene and 2-halo-imidazolium salts. The new derivatives of 1,3-dimethylbarbituric acid are classified into salts, ylides and neutral compounds in which the salts are produced due to the reaction with ylide-type bases, the ylide derivatives by the nucleophilic attack at the exocyclic methylene 1,3-dimethylbarbituric acid. The neutral derivatives by using 5,5-dihalo-1,3-dimethylbarbituric acid as starting material. All the prepared compounds were characterized by spectroscopic procedures and x-ray structural analysis.
Download or read book Part I Synthesis of New Barbituric Acid Derivatives written by John Paul Peters and published by . This book was released on 1974 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Organic Synthesis in Water written by P.A. Grieco and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of water as a medium for promoting organic reactions has been rather neglected in the development of organic synthesis, despite the fact that it is the solvent in which almost all biochemical processes take place. Chemists have only recently started to appreciate the enormous potential water has to offer in the development of new synthetic reactions and strategies, where it can offer benefits in both unique chemistry and reduced environmental impact. In this new book, the editor, well known for his contribution to the development of water as a useful medium in synthetic organic chemistry, has assembled an international team of authors, themselves at the forefront of research into the use of the unique properties of water carrying out organic transformations, to provide a timely and concise overview of current research. By focusing on the practical use of water in synthetic organic chemistry, and with the concern for the use of solvents in organic chemistry, professional chemists, particularly those involved in industrial research and development, will find this book an essential guide to the current state of the art, and a useful starting point in their own research. Academic chemists, including postgraduate and advanced undergraduate students, will find this book an invaluable guide to this exciting and important area of chemistry.
Download or read book Synthesis of Medicinal Agents from Plants written by Ashish Tewari and published by Elsevier. This book was released on 2018-04-17 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthesis of Medicinal Agents from Plants highlights the importance of synthesizing medicinal agents from plants and outlines methods for performing it effectively. Beginning with an introduction to the significance of medicinal plants, the book goes on to provide a historical overview of drug synthesis before exploring how this can be used to successfully replicate and adapt the active agents from natural sources. Chapters then explore the medicinal properties of a number of important plants, before concluding with a discussion of the future of drugs from medicinal plants. Illustrated with real-world examples, it is a practical resource for researchers in this field. In an age of rapid environmental destruction, hundreds of medicinal plants are at risk of extinction from overexploitation and deforestation, limiting the natural resources available for active agent extraction, thereby threatening the discovery of future cures for diseases. Simultaneously, with the increasing population and advances in medical sciences, the demand for drugs is continuously increasing and cannot be met with just plants. The ability to synthetically replicate the active compounds from these plants is essential in creating an ecologically-aware, sustainable future for drug design Includes detailed coverage of therapeutic compound synthesis Uses multiple real-world examples to support content Lays out a sustainable template for the future of developing active agents from natural products
Download or read book Privileged Scaffolds in Medicinal Chemistry written by Stefan Bräse and published by Royal Society of Chemistry. This book was released on 2015-11-20 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the various classes of privileged scaffolds and covers the history of their discovery and use.
Download or read book Practical Aspects of Electroorganic Synthesis written by Davood Nematollahi and published by Elsevier. This book was released on 2024-06-04 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical Aspects of Electroorganic Synthesis presents educational insights into the practical aspects of electrosynthesis methods, providing a variety of examples and techniques. The book covers concepts referred to as "green chemistry" and "sustainable technology." Sections cover direct electrolysis, anodic oxidation, cathodic reduction, mechanistic studies (cyclic voltammetry), and how to set-up electrochemical experiments. Indirect electrolysis is also covered, including an exploration of catalysts and additives to take on modern electrochemical methods. Finally, the book explores the burgeoning new field of paired electrolysis, in which the ultimate green-synthesis applications are possible, with no wasted electrons and very few by-products. This book offers researchers a modern and authoritative resource that brings complete and up-to-date practical concepts of electrosynthesis methods and guides the audience on how to carry out a large number of experimental techniques. Discusses complete and up-to-date practical concepts of electrosynthesis methods Provides sound insights into the experimental approaches of electrosynthesis, covering new and novel synthesis techniques Breaks down the fundamentals aspects of electrolysis into three digestible and logical sections
Download or read book Total Synthesis of Natural Products written by Jie Jack Li and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Total Synthesis of Natural Products' is written and edited by some of today's leaders in organic chemistry. Eleven chapters cover a range of natural products, from steroids to alkaloids. Each chapter contains an introduction to the natural product in question, descriptions of its biological and pharmacological properties and outlines of total synthesis procedures already carried out. Particular emphasis is placed on novel methodologies developed by the respective authors and their research groups. This text is ideal for graduate and advanced undergraduate students, as well as organic chemists in academia and industry.
Download or read book Organophosphorus Chemistry written by David W Allen and published by Royal Society of Chemistry. This book was released on 2020-04-15 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This annual review of the literature presents a comprehensive and critical survey of the vast field of study involving organophosphorus compounds, from phosphines and related P-C bonded compounds to phosphorus acids, phosphine chalcogenides and nucleotides. The Editors have added to the content with a timely chapter on the recent developments in green synthetic approaches in organophosphorus chemistry to reflect current interests in the area. With an emphasis on interdisciplinary content, this book is aimed at the worldwide organic chemistry and engineering research communities.
Download or read book Hetero Diels Alder Methodology in Organic Synthesis written by and published by Elsevier. This book was released on 2012-12-02 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Chemistry: A Series of Monographs, Volume 47: Hetero Diels-Alder Methodology in Organic Synthesis focuses on the use of hetero Diels-Alder reactions as pivotal steps in natural product total syntheses. The publication first offers information on N-sulfinyl compounds and sulfur diimides and imino dienophiles. Discussions focus on sulfur dioxide and related compounds, selenium dioxide, sulfur diimide cycloadditions, regiochemical, stereochemical, and mechanistic aspects, iminium salts and neutral imines, oximino compounds, and intramolecular cycloadditions. The text then takes a look at nitroso and thionitroso dienophiles and carbonyl dienophiles. The manuscript elaborates on thiocarbonyl and selenocarbonyl dienophiles and miscellaneous dienophiles. Topics include nitriles, azo compounds, selenoaldehydes, thioketones, thioesters, dithioesters, and related compounds, and thiophosgene and related compounds. The text also ponders on oxabutadienes, thiabutadienes, and azabutadienes. The publication is a valuable reference for chemists and readers interested in the Hetero Diels-Alder methodology.
Download or read book Applied Pharmacology written by Stan K. Bardal and published by Elsevier Health Sciences. This book was released on 2011-01-01 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applied Pharmacology provides the essential details that are required for a solid understanding of pharmacology: how the drugs work, why side effects occur, and how the drugs are used clinically. Drs. Stan Bardal, Jason Waechter, and Doug Martin integrate the experience of the pharmacologist and the physician for a clinical focus that ensures a complete understanding of pharmacology.in print and online. Find information quickly and compare and contrast drugs easily thanks to a clear and consistent format without extraneous material. Apply basic pharmacology to clinical situations through integrated text. Enhance your learning with "For Your Information" sections detailing history and anecdotes for many agents within a given drug class. Access the fully searchable text online at studentconsult.com, along with 150 USMLE-style multiple choice questions, downloadable images, and online only references. Learn the essential details of pharmacology and enhance your understanding through an entirely new, fantastic art program. Gain a thorough understanding of key pharmacology components in a concise and efficient format
Download or read book Alcohol Drugs Genes and the Clinical Laboratory written by Amitava Dasgupta and published by Academic Press. This book was released on 2016-10-17 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alcohol, Drugs, Genes and the Clinical Laboratory provides an overview and quick reference to genetic relationships and clinical laboratory information related to the serious public health issue of alcohol and drug abuse. Written in a clear and concise manner, this book discusses the necessary information for health and safety professionals working in public health to learn about complex issues quickly to better help their patients, employees, and others affected by alcohol and drug abuse. Alcohol, Drugs, Genes and the Clinical Laboratory covers the important aspects of drugs and alcohol abuse including genetic aspects along with laboratory methods for analysis of alcohol and abused drugs with emphasis on false positive test results. The book is helpful to healthcare professionals, such as pathologists who oversee alcohol and drug testing, emergency room physicians, family practice physicians who are first healthcare professionals who identify patients susceptible to drug and alcohol abuse, and psychiatrists involved with drug and alcohol rehabilitation programs. It will also be useful to safety professionals who have to assess individuals for workplace responsibilities, ranging from police and recruitment to occupational safety and occupational medicine and public health officials. Features accessible language for healthcare and safety professionals who are not experts in laboratory procedures Provides examples from clinical and everyday situations Explains how to interpret laboratory results and the latest genetic factors regarding drug and alcohol abuse
Download or read book Multicomponent Reactions towards Heterocycles written by Erik Van der Eycken and published by John Wiley & Sons. This book was released on 2022-03-21 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a wide-ranging overview of essential topics and recent advances in MCR chemistry Heterocycles are a central component in natural product chemistry, pharmaceuticals, agrochemicals, and material science. New synthetic methodologies integrating the sequencing of multicomponent reactions (MCRs) are today being used for the rapid synthesis of diversified heterocycles in just one step. Multicomponent Reactions towards Heterocycles presents an up-to-date summary MCR chemistry with a focus on the conjugation between modern synthetic methodologies and MCRs. Featuring contributions by leaders in the field, this comprehensive resource highlights applications of MCRs in natural products and intermediate synthesis, discusses current trends and future prospects in MCR chemistry, outlines novel multicomponent procedures, and more. The authors provide the practical information required for designing new reaction strategies and mechanisms, covering topics including MCR-based green synthetic methods, cyclization and cycloaddition reactions, heterocycle multicomponent syntheses in a continuous flow, catalytic alkynoyl generation, MCR synthesis of saturated heterocycles, and C–H functionalization and multicomponent reactions. Provides a thorough overview of heterocycles as input in multicomponent reactions Discusses recent advances in the field of MCR chemistry and progress in the synthesis and functionalization of heterocycles Demonstrates the use of MCRs to simplify synthetic design and achieve complexity and diversity in novel bioactive molecules Highlights examples of multicomponent polymerizations, target-oriented synthesis, and applications of MCR in medicinal chemistry Explains the methodology of using on-resin MCRs to produce heterocycle compounds Illustrating the key role of MCRs towards heterocycles in natural product synthesis, drug discovery, organic synthesis, and other applications, Multicomponent Reactions towards Heterocycles is required reading for synthetic chemists in academia and industry alike.
Download or read book Comprehensive Organic Chemistry Experiments for the Laboratory Classroom written by Carlos A. M. Afonso and published by Royal Society of Chemistry. This book was released on 2016-12-16 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: This expansive and practical textbook contains organic chemistry experiments for teaching in the laboratory at the undergraduate level covering a range of functional group transformations and key organic reactions.The editorial team have collected contributions from around the world and standardized them for publication. Each experiment will explore a modern chemistry scenario, such as: sustainable chemistry; application in the pharmaceutical industry; catalysis and material sciences, to name a few. All the experiments will be complemented with a set of questions to challenge the students and a section for the instructors, concerning the results obtained and advice on getting the best outcome from the experiment. A section covering practical aspects with tips and advice for the instructors, together with the results obtained in the laboratory by students, has been compiled for each experiment. Targeted at professors and lecturers in chemistry, this useful text will provide up to date experiments putting the science into context for the students.
Download or read book Separation Preconcentration and Spectrophotometry in Inorganic Analysis written by Z. Marczenko and published by Elsevier. This book was released on 2000-10-18 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectrophotometry enables one to determine, with good precision and sensitivity, almost all the elements present in small and trace quantities of any material. The method is particularly useful in the determination of non-metals and allows the determination elements in a large range of concentrations (from single % to low ppm levels) in various materials. In Separation, Preconcentration and Spectrophotometry in Inorganic Analysis, much attention has been paid to separation and preconcentration methods, since they play an essential role in increasing the selectivity and sensitivity of spectrophotometric methods. Separation and preconcentration methods have also been utilised in other determination techniques. Spectrophotometric methods which are widely used for the determination of the elements in a large variety of inorganic materials are presented in the book whilst separation and preconcentration procedures combined with spectrophotometry are also described. This book contains recent advances in spectrophotometry, detailed discussion of the instrumentation, and the techniques and reagents used for spectrophotometric determination of elements in a wide range of materials as well as a detailed discussion of separation and preconcentration procedures that precede the spectrophotometric detection.
