This book highlights key advances that have occurred in the field of olefin conversion in recent years. The role of homogenous transition metal catalysts which contain an imine functionality is emphasized; their potential applications in the processing and upgrade of olefins to a wide variety of commodity products of very high industrial value is also explored. On the threshold of the fiftieth anniversary of the Noble Prize to Ziegler and Natta, this book gives a critical summary of the state of the art developments in the fascinating and rapidly developing field of the olefin polymerization, oligomerization, and co-polymerization catalysis.

This book should be of interest to organic and biological chemists in universities, professional research chemists in pharmaceutical and dye industries.

Natural gums are polysaccharides consisting of multiple sugar units linked together via glycosidic linkages. Most natural gums reveal appropriate safety for oral consumption in the form of food additives or drug carriers. Challenges related to the utilization of natural polysaccharides, however, include uncontrolled rates of hydration, pH dependent solubility, viscosity reduction during storage, and weak interfacial properties. Modification provides an efficient route for not only removing such drawbacks but also improving physicochemical properties, such as solubility, viscosity and swelling index, and introducing new properties for varied applications.This book provides a comprehensive review of the various modifications on gums to make them suitable for food, cosmetic and pharmaceutical industries. The book is divided in four parts: an introduction to natural gums followed by in-depth coverage of chemical modification, physical modification, and enzymatic modification of gums. Each chapter includes reaction mechanisms, physicochemical properties, rheological properties, interfacial properties, applications and future perspectives. Presenting a succinct account on gum modification from a practical point of view, this book is a helpful reference for academic and industrial scientists and engineers in food technology, materials chemistry, pharmaceuticals, chemical, industrial, and applied engineering, biochemistry, and biopolymers.

One of the most active areas of contemporary organic chemistry involves the search for new catalysts that borrow concepts, strategies and even components from enzymes but yet are not found in nature. Such artificial enzymes not only give enormous insights into the mechanisms of enzyme catalysis but also offer the potential for catalyzing a wide range of chemical reactions with no counterpart in nature. Several approaches have been taken in the deVelopment of new catalysts, some based on biological methods and others on synthetic techniques. Site directed mutagenesis has allowed the direct replacement of amino acids in an enzyme with resulting changes in stability, selectivity and mechanism. Recent developments have shown that even non-natural amino acids can be incorporated into proteins and also that enzymes can function effectively in organic solvents. A different biological route to artificial enzymes has exploited the immune system and its ability to generate millions of antibodies to a given antigen. Novel antigens have been designed to mimic the transition states of chemical reactions. Antibodies elicited against these antigens thus contain an active site that is complementary to transition state structure and can potentially catalyze target reactions. A broad range of reactions can now be 6 catalyzed using the method with rate accelerations reaching 10 compared to the control reactions. Protein engineering and catalytic antibodies represent complex solutions to the problem of artificial enzymes. Their complexity is however their principal limitation.

This book focuses on chemical reactions and processing under extreme conditions-how materials react with highly concentrated active species and/or in a very confined high-temperature and high-pressure volume. Those ultimate reaction environments created by a focused laser beam, discharges, ion bombardments, or microwaves provide characteristic nano- and submicron-sized products and functional nanostructures. The book explores the chemistry and processing of metals and non-metals as well as molecules that are strongly dependent on the energy deposition processes and character of the materials. Descriptions of a wide range of topics are given from the perspective of a variety of research methodologies, material preparations, and applications. The reader is led to consider and review how a high-energy source interacts with materials, and what the key factors are that determine the quality and quantity of nanoproducts and nano-processing.

Organic Chemistry, Seventh Edition, continues the successful student-oriented approach used in prior editions. This text uses less prose and more diagrams and bulleted summaries for today's students, who rely more heavily on visual imagery to learn than ever before. Each topic is broken down into small chunks of information that are more manageable and easily learned. Organic chemistry is a dynamic subject that is continually refined as new facts are determined. Each year, novel compounds are discovered, and new drugs are marketed, and these compounds replace older examples to illustrate particular concepts. In this edition, for example, every effort has been made to include content on COVID-19. The text is strengthened by its offering in ALEKS, now featuring Custom Question Authoring, Video Assignments, Virtual Labs, and more!

Combinatorial chemistry and molecular diversity approaches to scientific and novel product R & D have exploded in the 1990s. For example, in the preparation of drug candidates, the automated, permutational, and combinatorial use of chemical building blocks now allows the generation and screening of unprecedented numbers of compounds. Drug discovery - better, faster, cheaper? Indeed more compounds have been made and screened in the 1990s than in the last hundred years of pharmaceutical research. The second volume in this series includes contributions on methods, solid phases, purification, analysis, carbohydrates, patent strategies and tactics, diversity profiling and combinatorial series design, and finishes with a survey of chemical libraries yielding biologically active agents and a compendium of solid phase chemistry publications. Each contribution is prepared by a recognized expert resulting in a high quality account of the recent advances in the field.

Combinatorial chemistry and molecular diversity approaches to scientific inquiry and novel product R&D have exploded in the 1990s! For example, in the preparation of drug candidates, the automated, permutational, and combinatorial use of chemical building blocks now allows the generation and screening of unprecedented numbers of compounds. Drug discovery - better, faster, cheaper? Indeed, more compounds have been made and screened in the 1990s than in the last hundred years of pharmaceutical research. This first volume covers: (i) combinatorial chemistry, (ii) combinatorial biology and evolution, and (iii) informatics and related topics. Within each section chapters are prepared by experts in the field, including, for example, in Section I: Coverage of mixture pools vs. parallel individual compound synthesis, solution vs. solid-phase synthesis, analytical tools, and automation. Section II highlights selection strategies and library-based evolution, phage display, peptide and nucleic acid libraries. Section III covers databases and library design, high through-put screening, coding strategies vs. deconvolutions, intellectual property issues, deals and collaborations, and successes to date.

This collection addresses new research and technology for increased efficiency, energy reduction, and waste minimization in mineral processing, extractive metallurgy, and recycling. Professor Patrick R. Taylor and his students have been studying these topics for the past 45 years. Chapters include new directions in:* Mineral Processing * Hydrometallurgy * Pyrometallurgy * Electrometallurgy * Metals and E waste recycling * Waste minimization (including by-product recovery) * Innovations in metallurgical engineering education and curriculum development

This volume contains the proceedings of the Ninth International Symposium on Cyclodextrins, held in Santiago de Compostela, Spain, May 31 - June 3, 1998. The papers collected represent a summary of the last two years' achievements in the application of cyclodextrins in such diverse fields as pharmaceuticals, biotechnology, textiles, chromatography and environmental sciences. Highlights: Chiral selection of chemicals, nuclear waste management, cyclodextrins in nasal drug delivery, cyclodextrins in pulmonary drug delivery, cyclodextrins as pharmaceutical excipients, pharmacokinetics, stabilization of drugs by cyclodextrins, structural characterization of cyclodextrin complexes by nuclear magnetic resonance and molecular modeling, artificial receptors, large cyclodextrins, cyclodextrins as enzyme models, new cyclodextrin derivatives and potentials. Audience: This book will be of interest to researchers whose work involves biotechnology, pharmaceuticals, food and chemicals and chromatographic methods, as well as fundamental cyclodextrin research.

The importance of molecular recognition in chemistry and biology is reflected in a recent upsurge in relevant research, promoted in particular by high-profile initiatives in this area in Europe, the USA and Japan. Although molecular recognition is necessarily microscopic in origin, its consequences are de facto macroscopic. Accordingly, a text that starts with intermolecular interactions between simple molecules and builds to a discussion of molecular recognition involving larger scale systems is timely. This book was planned with such a development in mind. The book begins with an elementary but rigorous account of the various types of forces between molecules. Chapter 2 is concerned with the hydrogen bond between pairs of simple molecules in the gas phase, with particular reference to the preferred relative orientation of the pair and the ease with which this can be distorted. This microscopic view continues in chapter 3 wherein the nature of interactions between solute molecules and solvents or between two or more solutes is examined from the experimental standpoint, with various types of spectroscopy providing the probe of the nature of the interactions. Molecular recognition is central to the catalysis of chemical reactions, especially when bonds are to be broken and formed under the severe con straint that a specific configuration is to result, as in the production of enan tiotopically pure compounds. This important topic is considered in chapter 4.

The volumes 3/I and 3/J present a modern account of polycyclic aromatic hydrocarbons (PAHs) and their heterocyclic analogs in the environment. The authors are internationally well recognized scientists belonging to those working presently in the frontline of the different subfields of this interdisciplinary area of environmental science; they give an integrated thorough overview on this hot topic. Extensive cross-referencing between chapters provides the readers with an easy access to all major areas. Due to the huge amount of material the text is published in two volumes (3/I and 3/J). It is expected that both volumes will soon become a major source of information and inspiration for all researchers actively working in PAH environmental chemistry or ecology.

The unique properties and applications of transition metal compounds have long fascinated both physicists and chemists. This volume presents theoretical and experimental studies for a deeper understanding of the electronic and vibronic properties of these compounds. In particular, an introduction into properties of spin sublevels of dd*, dA*, and AA* states is given, and a modern ligand field theory based on the Angular Overlap Model is presented. In experimental case studies it is shown how to characterize different types of electronic transitions using modern methods of laser spectroscopy. Consequences of spin-orbit coupling, zero-field splittings, spin-lattice relaxations, chromophore-matrix interactions, Herzberg-Teller/Franck-Condon activities, and localization/delocalization properties are treated.

The conventional solvents used in chemical, pharmaceutical, biomedical and separation processes represent a great challenge to green chemistry because of their toxicity and flammability. Since the beginning of "the 12 Principles of Green Chemistry" in 1998, a general effort has been made to replace conventional solvents with environmentally benign substitutes. Water has been the most popular choice so far, followed by ionic liquids, surfactant, supercritical fluids, fluorous solvents, liquid polymers, bio-solvents and switchable solvent systems. Green Solvents Volume I and II provides a throughout overview of the different types of solvents and discusses their extensive applications in fields such as extraction, organic synthesis, biocatalytic processes, production of fine chemicals, removal of hydrogen sulphide, biochemical transformations, composite material, energy storage devices and polymers. These volumes are written by leading international experts and cover all possible aspects of green solvents' properties and applications available in today's literature. Green Solvents Volume I and II is an invaluable guide to scientists, R&D industrial specialists, researchers, upper-level undergraduates and graduate students, Ph.D. scholars, college and university professors working in the field of chemistry and biochemistry.

Poly mer Interface and Adhesion provides the critical basis for further advancement in thisfield. Combining the principles of interfacial science, rheology, stress analysis, and fracturemechanics, the book teaches a new approach to the analysis of long standing problemssuch as: how is the interface formed; what are its physical and mechanical properties;and how does the interface modify the stress field and fracture strength of the material.The book offers many outstanding features, including extensive listings of pertinent references,exhaustive tabulations of the interfacial properties of polymers, critical reviews ofthe many conflicting theories, and complete discussions of coupling agents, adhesion promotion,and surface modifications. Emphasis is placed on physical concepts and mechanisms,using clear, understandable mathematics.Polymer Interface and Adhesion promotes a more thorough understanding of the physical,mechanical, and adhesive properties of multiphase, polymer systems. Polymer scientistsand engineers, surface chemists, materials scientists, rheologists, as well as chemical andmechanical engineers interested in the research, development or industrial applications ofpolymers, plastics, fibers, coatings, adhesives, and composites need this important newsource book.

This book promotes a basic understanding of the concept of solubility and miscibility between halogenated hydrocarbons and water. It points out the regularities existing between solubility and physical properties of solute and solvent. The book is valuable to chemists and chemical engineers.

This profusely illustrated book is intended to provide a comprehensive exposition of different aspects of organic and name reactions in detail including rearrangements such as mechanisms, stereochemistry and their applications with illustrations, figures, schemes and reaction series in such a way that it should not be difficult for the reader to evaluate typical reaction condition, workup procedure etc. Each chapter is accompanied with conceptual, theoretical and numerical problems along with references. The reaction series of schemes of organic and name reactions provide the way for rapid revision of the topics. All this should be of great help to research scholars, postgraduate students and teachers.

The first review describes examples of very promising compounds discovered from plants acquired from Africa, Southeast Asia, the Americas, and the Caribbean region with potential anticancer activity. These include plant secondary metabolites of the diphyllin lignan, penta[b]benzofuran, triterpenoid, and tropane alkaloid types. The second review presents 40 more erythrinan alkaloids, which were either new or were missed out in the last major reviews, bringing to a total of 154 known erythrinan alkaloids known to date. The reported pharmacological activities of the new and known alkaloids showed a greater bias towards central nervous system and related activities. Other prominent activities reported were antifeedant or insecticidal, cytotoxicity/anti tumor/anti cancer/estrogenic, antiprotozoal, antiinflammatory, antioxidant, antifungal and antiviral activities.

This book is an enthusiastic account of Pierre Laszlo's life and pioneering work on catalysis of organic reactions by modified clays, and his reflections on doing science from the 1960s to 1990s. In this autobiography, readers will discover a first-hand testimony of the chemical revolution in the second half of the 20th century, and the author's perspective on finding a calling in science and chemistry, as well as his own experience on doing science, teaching science and managing a scientific career. During this period, Pierre Laszlo led an academic laboratory and worked also in three different countries: the US, Belgium and France, where he had the opportunity to meet remarkable colleagues. In this book, he recalls his encounters and collaborations with important scientists, who shaped the nature of chemistry at times of increased pace of change, and collates a portrait of the worldwide scientific community at that time. In addition, the author tells us about the turns and twists of his own life, and how he ended up focusing his research on clay based chemistry, where clay minerals were turned in his lab to catalysis of key chemical transformations. Given its breath, the book offers a genuine information on the life and career of a chemist, and it will appeal not only to scientists and students, but also to historians of science and to the general reader.

This third volume in the set of books is dedicated to various sustainable approaches in textiles and fashion sector with a focus on fibres and raw materials employed. Sustainability is one of the important aspects in today's industrial context, which is followed by every industrial sector with no exception to textiles and fashion. Sustainability and strict adherence to the principles of sustainability has become as one of the essential needs again for any industrial sector including textiles and fashion. There are countless measures in terms of various approaches to make the textiles and fashion sector sustainable. These measures, but not limited to, ranging from innovating and implementing new fibres and raw materials, introducing innovative manufacturing methods, chemicals, processes to focus on all the possible stages of a textile product's life cycle from cradle to grave. These approaches include making the textiles and fashion sector circular and also development of new products from sustainable raw materials/processes or combination of both.

- Microporous Organic Polymers: Design, Synthesis, and Function By J.-X. Jiang and A. I. Cooper - Hydrogen, Methane and Carbon Dioxide Adsorption in Metal-Organic Framework Materials By X. Lin, N. R. Champness, and M. Schroeder -Doping of Metal-Organic Frameworks with Functional Guest Molecules and Nanoparticles By F. Schroeder and R. A. Fischer -Chiral Metal-Organic Porous Materials: Synthetic Strategies and Applications in Chiral Separation and Catalysis By K. Kim, M. Banerjee, M. Yoon, and S. Das -Controlled Polymerization by Incarceration of Monomers in Nanochannels By T. Uemura and S. Kitagawa -Designing Metal-Organic Frameworks for Catalytic Applications L. Ma and W. Lin -Magnetic and Porous Molecule-Based Materials By N. Roques, V. Mugnaini, and J. Veciana

As an introductory text book on food engineering principles, this text gives students a firm, quantitative foundation in all aspects of food process and product formulation, packaging, manufacturing processes; engineering aspects of the fate of food in the GI tract; engineering principles of the environmental impact of foods; and principles of process economics and project management. The contents are based on a new definition of Food Engineering which is fit-for-purpose for this day and age: Food Engineering is the work of designing, formulating and manipulating food products which have desired sensory, satiety, health and well-being responses; and developing - across various operational scales - designs for the lowest environmental impact processing, packaging and storage systems capable of realizing the products. Based on this definition, Engineering Principles for Food Process and Product Realization re-defines the core competencies of food engineering, covers the engineering principles needed for food process and product design, and examines the engineering principles relevant to the interactions between food on the one hand, and human health, security and environment on the other - which are the key drivers for the growth of food business. With security, human health and environmental legacy driving business, the engineering paradigm must shift from being farm and preservation focused to becoming consumer focused - which this book aims to achieve. All of these topics are covered at a level that is easy to read and absorb, but with challenging questions and problems which require knowledge integration across topics. This book is uniquely placed to serve as an effective launching pad for undertaking further studies on advanced topics and concepts relating to the design of food processes and products.

The volumes of this classic series, now referred to simply as "Zechmeister" after its founder, L. Zechmeister, have appeared under the "Springer Imprint" ever since the series inauguration in 1938. The volumes contain contributions on various topics related to the origin, distribution, chemistry, synthesis, biochemistry, function or use of various classes of naturally occurring substances ranging from small molecules to biopolymers. Each contribution is written by a recognized authority in his field and provides a comprehensive and up-to-date review of the topic in question. Addressed to biologists, technologists, and chemists alike, the series can be used by the expert as a source of information and literature citations and by the non-expert as a means of orientation in a rapidly developing discipline.

Molecular similarity searching is fast becoming a key tool in organic chemistry. In this book, the editor has brought together an international team of authors, each working at the forefront of this technology, providing a timely and concise overview of current research. The chapters focus principally on those methods which have reached sufficient maturity to be of immediate practical use in molecular design.