Heterogeneous Catalysis In Organic Transformations

As the broad challenges around energy and the environment have become the focus of much research, scientists and experts have dedicated their efforts to developing more active and selective catalytic systems for key chemical transformations. For many decades environmentally viable protocols for the synthesis of fine chemicals have been the crux of academic and industrial research. Heterogeneous Catalysis in Organic Transformations serves as an overview of this work, providing a complete description of role of heterogeneous catalysis in organic transformations and offering a review of the current and near future technologies and applications. Discusses the fundamentals of catalysis and compares the advantages and disadvantages of different types of catalyst systems Examines oxide nanoparticles and noble metal nanoparticles Consider organometallic compounds, solid-supported catalysts, and mesoporous materials Describes recent advances in metal-based heterogeneous catalysts and new reactions with possible mechanistic pathways Providing a comprehensive review of heterogeneous catalysis from the basics through recent advances, this book will be of keen interest to undergraduates, graduates, and researchers in chemistry, chemical engineering, and associated fields.

The features of this book which will be of special interest to academic organic chemists are the introduction (Chapter 1), which presents a short course on the concepts and language of heterogeneous catalysis, covers organic reaction mechanisms of hydrogenation (Chapter 2), hydrogenolysis (Chapter 4), and oxidation (Chapter 6), a presents problems and solutions specific for running heterogeneous catalytic organic reactions in solution. These materials can supplement advanced chemistry courses. Most synthetic organic chemists use a variety of "protecting groups" which they attach to functional groups (reactive groups of atoms) while some reaction is being conducted on another part of the molecule. These protecting groups prevent reactions of the functional groups during other reactions and are removed later by a heterogeneous catalytic method called hydrogenolysis. One unique feature of this book, not found in other books on catalysis, is an exhaustive chapter (Chapter 4) on hydrogenolysis, which is dredged from the recent synthetic literature published by modern organic chemists. Academic organic chemists should find this chapter extremely useful and may wish to adopt the book as a supplement for advanced organic chemistry courses designed for seniors and for graduate students. It will also be useful for professors and their research groups engaged in synthetic organic chemistry. Many academic organic chemists are not aware of recent advances in heterogeneous enantioselective catalysis (Chapter 3) or in selective low temperature, liquid phase heterogeneous catalytic oxidations by hydrogen peroxide (Chapter 6). These specialty topics are timely and may be new to academic organic chemists and can be used to supplement their advanced courses. Several features of this book will also be of special interest to industrial chemists who are unfamiliar with heterogeneous catalysis. Many good organic chemists are hire by industry. They synthesize a new compound using standard organic synthetic techniques but are informed by their supervisor that they must convert some of their synthetic steps into heterogeneous catalytic steps. They may not have been exposed to heterogeneous catalysis and have few places to turn. This book offers them a crash course in heterogeneous catalysis as well as many examples of reactions and conditions with which they can start their search. Those industrial organic chemists already familiar with heterogeneous catalysis will find this book useful as a reference to many examples in the recent literature. They will find recent surface science discoveries correlated with heterogeneous catalysis or organic reactions and mechanistic suggestions designed to stimulate innovative nontraditional thinking about organic reactions on surfaces. Written by organic chemists for organic chemists Introduces heterogeneous catalysis concepts and language Presents a comprehensive compilation of protecting group removal procedures Covers liquid-phase hydrogenations, hydrogenolysis, and oxidations Addresses heterogeneous methods for producing pure enantiomers of chiral products Examines the emerging field of heterogenized homogeneous catalysts Mixes practical applications with mechanistic interpretations

Based on the papers and posters presented at the 15th Conference on Catalysis of Organic Reactions, this work covers developments in the study of catalysis as it relates to organic synthesis, emphasizing applications in industrial processes. Over 1000 bibliographic citations and over 250 tables, drawings, and photographs are provided. Theoretical and practical aspects of the field are highlighted.

For more than a century, bioactive heterocycles have formed one of the largest areas of research in organic chemistry. They are important from a biological and industrial point of view as well as to the understanding of life processes and efforts to improve the quality of life. Heterogeneous Catalysis: A Versatile Tool for the Synthesis of Bioactive Heterocycles highlights the recent methodologies used in the synthesis of such bioactive systems and focuses on the role of heterogeneous catalysis in the design and synthesis of various biologically active heterocyclic compounds of pharmacological interest. Topics include: Synthetic protocols for the construction of heterocyclic systems employing silica-bound catalysts Recent advances in heterogeneous copper-catalyzed reactions for the synthesis of bioactive heterocycles Features of silica-based heterogeneous catalysts, such as abundance, ease of use, and stability Ultrasound as an effective tool for accelerating reactions Organic transformations catalyzed by nano-ZnO as a valuable heterogeneous catalyst Heterogeneous catalysts employed in the synthesis of coumarins Heterocyclizations in the presence of silver salts Home-made organometallic silica sources, known as silatranes Reflecting the focused studies currently conducted in these areas, the book also examines anticancer, antifungal, antibacterial, anti-HIV, anti-inflammatory, antioxidant, and many more biological activities of heterocyclic compounds. It is essential reading for postgraduate and research scholars in the fields of biochemistry, chemical biology, medicinal chemistry and pharmaceutical chemistry.

There are two main disciplines in catalysis research -- homogeneous and heterogeneous catalysis. This is due to the fact that the catalyst is either in the same phase (homogeneous catalysis) as the reaction being catalyzed or in a different phase (heterogeneous catalysis). Over the past decade, various approaches have been implemented to combine the advantages of homogeneous catalysis (efficiency, selectivity) with those of heterogeneous catalysis (stability, recovery) by the heterogenization of homogeneous catalysts or by carrying out homogeneous reactions under heterogeneous conditions. This unique handbook fills the gap in the market for an up-to-date work that links both homogeneous catalysis applied to organic reactions and catalytic reactions on surfaces of heterogeneous catalysts. As such, it highlights structural analogies and shows mechanistic parallels between the two, while additionally presenting kinetic analysis methods and models that either work for both homogeneous and heterogeneous catalysis. Chapters cover asymmetric, emulsion, phase-transfer, supported homogeneous, and organocatalysis, as well as in nanoreactors and for specific applications, catalytic reactions in ionic liquids, fluorous and supercritical solvents and in water. Finally, the text includes computational methods for investigating structure-reactivity relations. With its wealth of information, this invaluable reference provides academic and industrial chemists with novel concepts for innovative catalysis research.

This book is based on a graduate course and suitable as a primer for any newcomer to the field, this book is a detailed introduction to the experimental and computational methods that are used to study how solid surfaces act as catalysts. Features include: First comprehensive description of modern theory of heterogeneous catalysis Basis for understanding and designing experiments in the field Allows reader to understand catalyst design principles Introduction to important elements of energy transformation technology Test driven at Stanford University over several semesters

Apply an Omnibus of Knowledge from Leaders in the Field The unexpected diversity of topics presented at previous gatherings forced organizers of 2008’s 22nd Conference on Catalysis of Organic Reactions to expand its format to reflect the remarkable current degree of specialization in the field. Catalysis of Organic Reactions contains a compilation of papers presented at the event, and subsequently, few books will be able to match the breadth and depth of its content. Featuring papers by respected scientists from academia, industry, and the governmental research-and-development sector, it covers various aspects of the production, sale, and use of catalysts for practical purposes. Articles concentrate on the general area of catalyzed synthesis, emphasizing the production of organic chemicals. With a focus on application rather than theory, the dominant theme is the traditionally practiced area of heterogeneous catalysis. Topics include: Hydrogenation and hydrogenolysis C-C coupling Amination and oxidation (including the precious metal, supported base metal, and sponge metal, Raney process, and homogeneous catalyst types) End uses of products, including industrial petrochemicals, fine chemicals, and pharma intermediates Those working with applied catalysis will benefit greatly from this consolidation of insights and reviews of the latest developments in the field. Each of the papers presented were edited by ORCS members, drawn from both academia and industry, and peer-reviewed by experts in related fields of study.

Heterogeneous Micro and Nanoscale Composites for the Catalysis of Organic Reactions discusses the major properties and applications of heterogeneous micro and nanoscale composites, including surface coating and functionalization capability, effective physical properties, recovery and reusability, biocompatibility and biodegradability. In addition, preparation strategies and essential analytical methods for the characterization of these materials are investigated. The effects of morphology, porosity and sizes of these composites on catalytic activity are also discussed. This book is an important reference source for materials engineers and chemical engineers who are interested in heterogeneous, thin-scaled materials and catalyzed organic synthesis reactions. In addition, this book will help researchers design novel structures and apply them in catalytic applications. Provides information on the preparation, characterization and applications of catalysis of organic reactions Outlines the major catalytic applications of heterogenous nanocomposites Assesses the major challenges of manufacturing heterogenous nanocomposites on an industrial scale