Найти книгу: "Copper-Catalyzed Asymmetric Synthesis"

This book reflects the increasing interest among the chemical synthetic community in the area of asymmetric copper-catalyzed reactions, and introduces readers to the latest, most significant developments in the field. The contents are organized according to reaction type and cover mechanistic and spectroscopic aspects as well as applications in the synthesis of natural products. A whole chapter is devoted to understanding how primary organometallics interact with copper to provide selective catalysts for allylic substitution and conjugate addition, both of which are treated in separate chapters. Another is devoted to the variety of substrates and experimental protocols, while an entire chapter covers the use on non-carbon nucleophiles. Other chapters deal with less-known reactions, such as carbometallation or the additions to imines and related systems, while the more established reactions cyclopropanation and aziridination as well as the use of copper (II) Lewis acids are warranted their own special chapters. Two further chapters concern the processes involved, as determined by mechanistic studies. Finally, a whole chapter is devoted to the synthetic applications. This is essential reading for researchers at academic institutions and professionals at pharmaceutical or agrochemical companies.

David Copperfield is the story of a young man’s adventures on his journey from an unhappy & impoverished childhood to the discovery of his vocation as a successful novelist. Among the gloriously vivid cast of characters he encounters are his tyrannical stepfather, Mr Murdstone; his formidable aunt, Betsey Trotwood; the eternally humble yet treacherous Uriah Heep; frivolous, enchanting Dora.

A level 5 Oxford Bookworms Library graded reader. Retold for Learners of English by Clare West. 'Please, Mr Murdstone! Don't beat me! I've tried to learn my lessons, really I have, sir!' sobs David. Although he is only eight years old, Mr Murdstone does beat him, and David is so frightened that he bites his cruel stepfather's hand. For that, he is kept locked in his room for five days and nights, and nobody is allowed to speak to him. As David grows up, he learns that life is full of trouble and misery and cruelty. But he also finds laughter and kindness, trust and friendship… and love.

In this work I look how the conflicts influence on the market structure and its peculiar communication. At the same time is appraised the semiotic substance and power of the signs for the interpretation of a coercive changing economic reality. In the specific aspects of examination are included typical moments of military confrontation in Ukraine and in the territories, where Islamic State has activity. Some observations of the wars in ex-Yugoslavia from the 90s are also included.