The Rwandan genocide sparked a horrific bloodbath that swept across sub-Saharan Africa, ultimately leading to the deaths of some four million people. In this extraordinary history of the recent wars in Central Africa, Gerard Prunier offers a gripping account of how one grisly episode laid the groundwork for a sweeping and disastrous upheaval. Prunier vividly describes the grisly aftermath of the Rwandan genocide, when some two million refugees--a third of Rwanda's population--fled to exile in Zaire in 1996. The new Rwandan regime then crossed into Zaire and attacked the refugees, slaughtering upwards of 400,000 people. The Rwandan forces then turned on Zaire's despotic President Mobutu and, with the help of a number of allied African countries, overthrew him. But as Prunier shows, the collapse of the Mobutu regime and the ascension of the corrupt and erratic Laurent-D?sir? Kabila created a power vacuum that drew Rwanda, Uganda, Angola, Zimbabwe, Sudan, and other African nations into an extended and chaotic war. The heart of the book documents how the whole core of the African continent became engulfed in an intractible and bloody conflict after 1998, a devastating war that only wound down following the assassination of Kabila in 2001. Prunier not only captures all this in his riveting narrative, but he also indicts the international community for its utter lack of interest in what was then the largest conflict in the world. Praise for the hardcover: "The most ambitious of several remarkable new books that reexamine the extraordinary tragedy of Congo and Central Africa since the Rwandan genocide of 1994." --New York Review of Books "One of the first books to lay bare the complex dynamic between Rwanda and Congo that has been driving this disaster." --Jeffrey Gettleman, New York Times Book Review "Lucid, meticulously researched and incisive, Prunier's will likely become the standard account of this under-reported tragedy." --Publishers Weekly
Heterogeneous Enantioselective Hydrogenation: Theory and Practice reviews the development of enantioselective hydrogenation reaction catalysts. It looks at the first relatively ineffective catalysts right through to modern highly effective enantioselective catalytic systems, comparable in their efficiency to chiral metal complexes and enzymatic systems. The book begins with a summary of the first work on heterogeneous metal catalysts, which showed only the principal possibilities of enantioselective reactions. It then elaborates on metal catalysts which have enantioselectivities close to 100%. Finally, the practical utilization of chiral catalytic systems in processes of hydrogenation is described. The alpha- and beta-hydroxy carboxylic acid esters produced are precursors for manufacturing many synthones used for medicines as well as for monomers used for biodegradable polyesters, both of which have important practical applications. The volume summarizes more than 800 scientific papers in the field of enantioselective catalytic hydrogenation reactions, mainly those using heterogeneous metal catalysts. It provides detailed explanations of special techniques for the preparation of effective dissymmetric catalysts which provide highly efficient catalytic systems.
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
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