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German writer Johann Goethe's novella «Elective Affinities» is a singular book which attracts both creative minds and pragmatic minds. Romantics at heart will be drawn to the convoluted love affair; married couple Eduard and Charlotte invite two close friends to live with them on their idyllic estate for a short time. The innocent invitation takes an unexpected turn though, as each of the spouses become attracted to their guests. Eduard falls in love with Ottilie, the young and attractive niece of Charlotte, and Charlotte finds herself drawn to Captain, the down-on-his-luck friend of Eduard. What draws science-minded readers to the story is Goethe's theory of elective affinities, or the relationship between certain compounds which means that they only react with each other under very unique circumstances. Goethe draws comparisons of science with sociology, allowing his characters to act and react with each other based on the elective affinity principle. The characters pairing up under the circumstances of their living condition creates a passionate, secretive environment that causes each person to reconsider their own morals. They want love, but how far are they willing to go to obtain it? Goethe pits two opposing ideas against each other: that people are slave to their desires and their own agents of free will. It is a dichotomy that has captivated audiences to return to «Elective Affinities» for over two-hundred years.


Les affinites electives Les affinites electives

Автор: Иоганн Вольфганг фон Гёте

Год издания: 



Selective Forex Trading. How to Achieve Over 100 Trades in a Row Without a Loss Selective Forex Trading. How to Achieve Over 100 Trades in a Row Without a Loss

Автор: Don Snellgrove

Год издания: 

Selective Forex Trading skillfully outlines author Don Snellgrove’s S90/Crossover: an independently verified technical indicator that has provided traders with the ability to achieve over 100 consecutive Forex trades without a single loss. Whether you’re a seasoned professional or just getting started, this approach—which is based on historical resistance and support points within a trading range—can assist you in entering and exiting positions for the greatest profits possible.


Stereoselective Organocatalysis. Bond Formation Methodologies and Activation Modes Stereoselective Organocatalysis. Bond Formation Methodologies and Activation Modes

Автор: Ramon Torres Rios

Год издания: 

Sets forth an important group of environmentally friendly organic reactions With contributions from leading international experts in organic synthesis, this book presents all the most important methodologies for stereoselective organocatalysis, fully examining both the activation mode as well as the type of bond formed. Clear explanations guide researchers through all the most important methods used to form key chemical bonds, including carbon-carbon (C–C), carbon-nitrogen (C–N), and carbon-halogen (C–X) bonds. Moreover, readers will discover how the use of non-metallic catalysts facilitates a broad range of important reactions that are environmentally friendly and fully meet the standards of green chemistry. Stereoselective Organocatalysis begins with an historical overview and a review of activation modes in asymmetric organocatalysis. The next group of chapters is organized by bond type, making it easy to find bonds according to their applications. The first of these chapters takes a detailed look at the many routes to C–C bond formation. Next, the book covers: Organocatalytic C–N bond formation C–O bond formation C–X bond formation C–S, C–Se, and C–B bond formation Enantioselective organocatalytic reductions Cascade reactions forming both C–C bonds and C–heteroatom bonds The final chapter is devoted to the use of organocatalysis for the synthesis of natural products. All the chapters in the book are extensively referenced, serving as a gateway to the growing body of original research reports and reviews in the field. Based on the most recent findings and practices in organic synthesis, Stereoselective Organocatalysis equips synthetic chemists with a group of organocatalytic reactions that will help them design green reactions and overcome many challenges in organic synthesis.


Directed Evolution of Selective Enzymes. Catalysts for Organic Chemistry and Biotechnology Directed Evolution of Selective Enzymes. Catalysts for Organic Chemistry and Biotechnology

Автор: Manfred Reetz T.

Год издания: 

Authored by one of the world's leading organic chemists, this authoritative reference provides an overview of basic strategies in directed evolution and introduces common gene mutagenesis, screening and selection methods. Throughout the text, emphasis is placed on methodology development to maximize efficiency, reliability and speed of the experiments and to provide guidelines for efficient protein engineering. Professor Reetz highlights the application of directed evolution experiments to address limitations in the field of enzyme selectivity, substrate scope, activity and robustness. He critically reviews recent developments and case studies, takes a look at future applications in the field of organic synthesis, and concludes with lessons learned from previous experiments.


Stereoselective Synthesis of Drugs and Natural Products Stereoselective Synthesis of Drugs and Natural Products

Автор: Andrushko Natalia

Год издания: 

Brings together the best tested and proven stereoselective synthetic methods Both the chemical and pharmaceutical industries are increasingly dependent on stereoselective synthetic methods and strategies for the generation of new chiral drugs and natural products that offer specific 3-D structures. With the publication of Stereoselective Synthesis of Drugs and Natural Products, researchers can turn to this comprehensive two-volume work to guide them through all the core methods for the synthesis of chiral drugs and natural products. Stereoselective Synthesis of Drugs and Natural Products features contributions from an international team of synthetic chemists and pharmaceutical and natural product researchers. These authors have reviewed the tremendous body of literature in the field in order to compile a set of reliable, tested, and proven methods alongside step-by-step guidance. This practical resource not only explores synthetic methodology, but also reaction mechanisms and applications in medicinal chemistry and drug discovery. The publication begins with an introductory chapter covering general principles and methodologies, nomenclature, and strategies of stereoselective synthesis. Next, it is divided into three parts: Part One: General Methods and Strategies Part Two: Stereoselective Synthesis by Bond Formation including C-C bond formation C-H bond formation C-O bond formation C-N bond formation Other C-heteroatom formation and other bond formation Part Three: Methods of Analysis and Chiral Separation References in every chapter serve as a gateway to the literature in the field. With this publication as their guide, chemists involved in the stereoselective synthesis of drugs and natural products now have a single, expertly edited source for all the methods they need.