Download or read book Harnessing Strain Driven Reactivity for Complex Molecule Synthesis and Advances in Chemical Education written by Jason Chari and published by . This book was released on 2022 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation describes the development of synthetic methodologies and approaches that leverage strain-driven reactivity to access complex molecules, as well as enzymatic studies and advances in the field of chemical education. The high potential energy stored within strained bonds offers a powerful tool in organic synthesis for the construction of new covalent bonds. Controlling the reactivity of strained molecules, while challenging in many cases, offers a means to form multiple bonds in a single step, under mild reaction conditions, and generate products that may be inaccessible by other means. Herein, several synthetic endeavors are described that seek to leverage strain release to push our understanding of chemical reactivity and gain new entryways into important classes of organic and organometallic compounds. Moreover, two studies in the area of biosynthesis and are described, which take advantage of synergy between chemical synthesis and enzymatic chemistry to access bioactive compounds with high selectivity. Finally, studies in the area of chemical education are described. These efforts seek to make organic chemistry accessible to wider audiences through the development of interactive, globally available educational tools and the creation of a new undergraduate lecture course that highlights the role of organic chemistry in the world around us. Chapter one describes a perspective on the field of complex molecule synthesis (i.e., total synthesis), with a focus on the power of collaborations across research groups. Although historically competitive, there is a growing spirit of teamwork and collaboration in the field of total synthesis. This chapter discusses recent breakthroughs in both academic and industrial laboratories that have succeeded as a direct result of alliances between research groups. Chapter two describes progress toward the total synthesis of dodecahedrane, a complex and highly symmetrical hydrocarbon that bears twelve fused rings arranged in a cage-like architecture. Central to our approach is an ambitious [2+2+2+2+2] poly-ene cyclization cascade which would serve to provide new insights into chemical reactivity. Current efforts center around constructing key linkages found in the target by harnessing the strain release of norbornene ring systems to form new carbon-carbon bonds. Chapter three describes a concise and scalable synthetic approach to precursors to strained intermediates. Although historically avoided due to their high reactivity, strained cyclic alkynes and allenes have demonstrated value in the synthesis of medicinally privileged, polycyclic compounds. These efforts, which provide efficient access to silyl triflate precursors to cyclohexyne and 1,2-cyclohexadiene, serve to enable further studies involving strained alkynes and allenes. Chapters four and five describe the development of new methodologies that exploit strained aryne intermediates in the synthesis of complex organic and organometallic materials. Both chapters investigate the controlled generation and reactivity of aryne intermediates, as well as engagement of these intermediates in Pd-catalysis to build new ring systems. Chapter four specifically details the development of aryne chemistry "on-the-complex," wherein fleeting aryne intermediates are reacted with pre-coordinated metal-ligand complexes to form new carbon-carbon bonds. These studies, performed in the context of privileged, photoactive polypyridyl metal complexes, provide an effective strategy to annulate organometallic complexes and access complex metal-ligand scaffolds, while furthering the synthetic utility of strained intermediates in chemical synthesis. Chapter five details the development of Pd-catalyzed reactions of indole and carbazole-based arynes (i.e., hetarynes) to access [pi]-extended heterocyclic materials. The products obtained were applied as ligands in two-coordinate metal complexes to access new OLED emitters. Chapters six and seven are concerned with uncovering and investigating highly selective reactions catalyzed by fungal enzymes. In particular, chapter six describes the discovery of two groups of enzymes that catalyze distinct reactions, an Alder-ene reaction (previously unknown in biology) and a stereoselective hetero-Diels-Alder reaction. Chapter seven presents studies pertaining to the aminoacylation and thiolation of polyketides in fungi, with a focus on elucidating mechanistic pathways. Both chapters showcase important synergy between chemical synthesis and enzymatic chemistry, and elucidate new enzymatic pathways that ultimately give rise to molecular complexity. Chapters eight and nine illustrate advances in chemical education. Chapter eight specifically details the development and execution of a new undergraduate course taught by graduate students. The course, entitled Catalysis in Modern Drug Discovery, served to highlight the central role of organic chemistry in drug discovery, while also conveying key concepts in catalysis. Moreover, the course spotlighted the various careers that organic chemists play in the development of new medicines. Chapter nine presents a perspective that highlights our recent efforts to develop interactive resources in chemical education for worldwide usage. In particular, these efforts seek to promote a spirit of innovation in chemical education and spur the development of widely accessible resources that improve learning outcomes and promote positive perception of chemistry in the broader community

Download or read book Beyond the Molecular Frontier written by National Research Council and published by National Academies Press. This book was released on 2003-03-19 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemistry and chemical engineering have changed significantly in the last decade. They have broadened their scopeâ€"into biology, nanotechnology, materials science, computation, and advanced methods of process systems engineering and controlâ€"so much that the programs in most chemistry and chemical engineering departments now barely resemble the classical notion of chemistry. Beyond the Molecular Frontier brings together research, discovery, and invention across the entire spectrum of the chemical sciencesâ€"from fundamental, molecular-level chemistry to large-scale chemical processing technology. This reflects the way the field has evolved, the synergy at universities between research and education in chemistry and chemical engineering, and the way chemists and chemical engineers work together in industry. The astonishing developments in science and engineering during the 20th century have made it possible to dream of new goals that might previously have been considered unthinkable. This book identifies the key opportunities and challenges for the chemical sciences, from basic research to societal needs and from terrorism defense to environmental protection, and it looks at the ways in which chemists and chemical engineers can work together to contribute to an improved future.

Download or read book Industrialization of Biology written by National Research Council and published by National Academies Press. This book was released on 2015-06-29 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tremendous progress in biology over the last half century - from Watson and Crick's elucidation of the structure of DNA to today's astonishing, rapid progress in the field of synthetic biology - has positioned us for significant innovation in chemical production. New bio-based chemicals, improved public health through improved drugs and diagnostics, and biofuels that reduce our dependency on oil are all results of research and innovation in the biological sciences. In the past decade, we have witnessed major advances made possible by biotechnology in areas such as rapid, low-cost DNA sequencing, metabolic engineering, and high-throughput screening. The manufacturing of chemicals using biological synthesis and engineering could expand even faster. A proactive strategy - implemented through the development of a technical roadmap similar to those that enabled sustained growth in the semiconductor industry and our explorations of space - is needed if we are to realize the widespread benefits of accelerating the industrialization of biology. Industrialization of Biology presents such a roadmap to achieve key technical milestones for chemical manufacturing through biological routes. This report examines the technical, economic, and societal factors that limit the adoption of bioprocessing in the chemical industry today and which, if surmounted, would markedly accelerate the advanced manufacturing of chemicals via industrial biotechnology. Working at the interface of synthetic chemistry, metabolic engineering, molecular biology, and synthetic biology, Industrialization of Biology identifies key technical goals for next-generation chemical manufacturing, then identifies the gaps in knowledge, tools, techniques, and systems required to meet those goals, and targets and timelines for achieving them. This report also considers the skills necessary to accomplish the roadmap goals, and what training opportunities are required to produce the cadre of skilled scientists and engineers needed.

Download or read book Chemistry for Tomorrow s World written by Shea Mullally and published by . This book was released on 1991 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a modern and systematic approach to physical, inorganic and organic chemistry in a methodical style. The book is designed for the Leaving Certificate Chemistry course of the Irish educational system.

Download or read book Science And Human Behavior written by B.F Skinner and published by Simon and Schuster. This book was released on 2012-12-18 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: The psychology classic—a detailed study of scientific theories of human nature and the possible ways in which human behavior can be predicted and controlled—from one of the most influential behaviorists of the twentieth century and the author of Walden Two. “This is an important book, exceptionally well written, and logically consistent with the basic premise of the unitary nature of science. Many students of society and culture would take violent issue with most of the things that Skinner has to say, but even those who disagree most will find this a stimulating book.” —Samuel M. Strong, The American Journal of Sociology “This is a remarkable book—remarkable in that it presents a strong, consistent, and all but exhaustive case for a natural science of human behavior…It ought to be…valuable for those whose preferences lie with, as well as those whose preferences stand against, a behavioristic approach to human activity.” —Harry Prosch, Ethics

Download or read book Machine Learning in Chemistry written by Jon Paul Janet and published by American Chemical Society. This book was released on 2020-05-28 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in machine learning or artificial intelligence for vision and natural language processing that have enabled the development of new technologies such as personal assistants or self-driving cars have brought machine learning and artificial intelligence to the forefront of popular culture. The accumulation of these algorithmic advances along with the increasing availability of large data sets and readily available high performance computing has played an important role in bringing machine learning applications to such a wide range of disciplines. Given the emphasis in the chemical sciences on the relationship between structure and function, whether in biochemistry or in materials chemistry, adoption of machine learning by chemistsderivations where they are important

Download or read book Applications of Transition Metal Catalysis in Drug Discovery and Development written by Matthew L. Crawley and published by John Wiley & Sons. This book was released on 2012-05-14 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the drug discovery and development applications of transition metal catalyzed processes, which can efficiently create preclinical and clinical drug candidates as well as marketed drugs. The authors pay particular attention to the challenges of transitioning academically-developed reactions into scalable industrial processes. Additionally, the book lays the groundwork for how continued development of transition metal catalyzed processes can deliver new drug candidates. This work provides a unique perspective on the applications of transition metal catalysis in drug discovery and development – it is a guide, a historical prospective, a practical compendium, and a source of future direction for the field.

Download or read book Classical And Quantum Dynamics In Condensed Phase Simulations Proceedings Of The International School Of Physics written by Bruce J Berne and published by World Scientific. This book was released on 1998-06-17 with total page 881 pages. Available in PDF, EPUB and Kindle. Book excerpt: The school held at Villa Marigola, Lerici, Italy, in July 1997 was very much an educational experiment aimed not just at teaching a new generation of students the latest developments in computer simulation methods and theory, but also at bringing together researchers from the condensed matter computer simulation community, the biophysical chemistry community and the quantum dynamics community to confront the shared problem: the development of methods to treat the dynamics of quantum condensed phase systems.This volume collects the lectures delivered there. Due to the focus of the school, the contributions divide along natural lines into two broad groups: (1) the most sophisticated forms of the art of computer simulation, including biased phase space sampling schemes, methods which address the multiplicity of time scales in condensed phase problems, and static equilibrium methods for treating quantum systems; (2) the contributions on quantum dynamics, including methods for mixing quantum and classical dynamics in condensed phase simulations and methods capable of treating all degrees of freedom quantum-mechanically.

Download or read book Medicinal Chemistry written by Thomas Nogrady and published by Oxford University Press. This book was released on 2005-08-11 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and rewritten by a basic scientist who is also a practicing physician, the third edition of this popular textbook remains comprehensive, authoritative and readable. Taking a receptor-based, target-centered approach, it presents the concepts central to the study of drug action in a logical, mechanistic way grounded on molecular and principles. Students of pharmacy, chemistry and pharmacology, as well as researchers interested in a better understanding of drug design, will find this book an invaluable resource. Starting with an overview of basic principles, Medicinal Chemistry examines the properties of drug molecules, the characteristics of drug receptors, and the nature of drug-receptor interactions. Then it systematically examines the various families of receptors involved in human disease and drug design. The first three classes of receptors are related to endogenous molecules: neurotransmitters, hormones and immunomodulators. Next, receptors associated with cellular organelles (mitochondria, cell nucleus), endogenous macromolecules (membrane proteins, cytoplasmic enzymes) and pathogens (viruses, bacteria) are examined. Through this evaluation of receptors, all the main types of human disease and all major categories of drugs are considered. There have been many changes in the third edition, including a new chapter on the immune system. Because of their increasingly prominent role in drug discovery, molecular modeling techniques, high throughput screening, neuropharmacology and genetics/genomics are given much more attention. The chapter on hormonal therapies has been thoroughly updated and re-organized. Emerging enzyme targets in drug design (e.g. kinases, caspases) are discussed, and recent information on voltage-gated and ligand-gated ion channels has been incorporated. The sections on antihypertensive, antiviral, antibacterial, anti-inflammatory, antiarrhythmic, and anticancer drugs, as well as treatments for hyperlipidemia and peptic ulcer, have been substantially expanded. One new feature will enhance the book's appeal to all readers: clinical-molecular interface sections that facilitate understanding of the treatment of human disease at a molecular level.

Download or read book Supramolecular Chemistry in Water written by Stefan Kubik and published by John Wiley & Sons. This book was released on 2019-09-03 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides deep insight into the concepts and recent developments in the area of supramolecular chemistry in water Written by experts in their respective field, this comprehensive reference covers various aspects of supramolecular chemistry in water?from fundamental aspects to applications. It provides readers with a basic introduction to the current understanding of the properties of water and how they influence molecular recognition, and examines the different receptor types available in water and the types of substrates that can be bound. It also looks at areas to where they can be applied, such as materials, optical sensing, medicinal imaging, and catalysis. Supramolecular Chemistry in Water offers five major sections that address important topics like water properties, molecular recognition, association and aggregation phenomena, optical detection and imaging, and supramolecular catalysis. It covers chemistry and physical chemistry of water; water-mediated molecular recognition; peptide and protein receptors; nucleotide receptors; carbohydrate receptors; and ion receptors. The book also teaches readers all about coordination compounds; self-assembled polymers and gels; foldamers; vesicles and micelles; and surface-modified nanoparticles. In addition, it provides in-depth information on indicators and optical probes, as well as probes for medical imaging. -Covers, in a timely manner, an emerging area in chemistry that is growing more important every day -Addresses topics such as molecular recognition, aggregation, catalysis, and more -Offers comprehensive coverage of everything from fundamental aspects of supramolecular chemistry in water to its applications -Edited by one of the leading international scientists in the field Supramolecular Chemistry in Water is a one-stop-resource for all polymer chemists, catalytic chemists, biochemists, water chemists, and physical chemists involved in this growing area of research.

Download or read book Supramolecular Chirality written by Mercedes Crego-Calama and published by Springer. This book was released on 2006-05-08 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts

Download or read book Bioactive Heterocyclic Compound Classes written by Clemens Lamberth and published by John Wiley & Sons. This book was released on 2012-08-16 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry of heterocycles is an important branch of organic chemistry. This is due to the fact that a large number of natural products, e. g. hormones, antibiotics, vitamins, etc. are composed of heterocyclic structures. Often, these compounds show beneficial properties and are therefore applied as pharmaceuticals to treat diseases or as insecticides, herbicides or fungicides in crop protection. This volume presents important pharmaceuticals. Each of the 20 chapters covers in a concise manner one class of heterocycles, clearly structuredas follows: * Structural formulas of most important examples (market products) * Short background of history or discovery * Typical syntheses of important examples * Mode of action * Characteristic biological activity * Structure-activity relationship * Additional chemistry information (e.g. further transformations, alternative syntheses, metabolic pathways, etc.) * References. A valuable one-stop reference source for researchers in academia and industry as well as for graduate students with career aspirations in the pharmaceutical chemistry.

Download or read book Computational Catalysis written by Aravind Asthagiri and published by Royal Society of Chemistry. This book was released on 2014 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive review of the methods and approaches being adopted to push forward the boundaries of computational catalysis.

Download or read book Lignin Valorization written by Gregg T. Beckham and published by Royal Society of Chemistry. This book was released on 2018-03-29 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Chapters will specifically focus on the production of fuels and chemicals from lignin."--Page [4] of cover.

Download or read book Heterocycles in Natural Product Synthesis written by Krishna C. Majumdar and published by John Wiley & Sons. This book was released on 2011-06-15 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling a gap on the market, this handbook and ready reference is unique in its discussion of the usefulness of various heterocyclic systems in the synthesis of natural products. Clearly structured for easy access to the information, each chapter is devoted to a certain class of heterocycle, providing a tabular presentation of the natural products to be covered containing the particular heterocyclic ring system along with their biological profile, occurrence and most important physical properties, backed by the appropriate references. In addition, the application of the heterocyclic system to the synthesis of natural products ic covered in detail. Of great interest to organic, natural products, medicinal and biochemists, as well as those working in the pharmaceutical and agrochemical industry.

Download or read book Comprehensive Handbook of Chemical Bond Energies written by Yu-Ran Luo and published by CRC Press. This book was released on 2007-03-09 with total page 1685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the energy it takes to build or break chemical bonds is essential for scientists and engineers in a wide range of innovative fields, including catalysis, nanomaterials, bioengineering, environmental chemistry, and space science. Reflecting the frequent additions and updates of bond dissociation energy (BDE) data throughout the literat

Download or read book Immobilized Catalysts written by Andreas Kirschning and published by Springer Science & Business Media. This book was released on 2004-11-22 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: R. Haag, S. Roller: Polymeric Supports for the Immobilisation of Catalysts .- J. Horn, F. Michalek, C.C. Tzschucke, W. Bannwarth: Non-Covalently Solid-Phase Bound Catalysts for Organic Synthesis .- Y. Uozumi: Recent Progress in Polymeric Palladium Catalysts for Organic Synthesis .- D.E. Bergbreiter, J. Li: Applications of Catalysts on Soluble Supports .- B. Desai, C.O. Kappe: Microwave-Assisted Synthesis Involving Immobilized Catalysts .- A. Kirschning, G. Jas: Applications of Immobilized Catalysts in Continuous Flow Processes .- N. End, K.-U. Schöning: Immobilized Catalysts in Industrial Research and Application .- N. End, K.-U. Schöning: Immobilized Biocatalysts in Industrial Research and Production