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Organozinc reagents are less reactive than Grignard reagents but they are much more chemoselective. Since the Negishi cross-coupling reaction developed by Ei-ichi Negishi, who was awarded the Nobel Price in chemistry in 2010, a number of cross-coupling reactions involving organozinc derivatives and transition metal catalysts (Pd, Ni, Fe, Co, Cu, ...) has been tuned up to form C-C bonds. This book on "Organozinc derivatives and transition metal catalysts" has been written by experts in the field and is a complement to the book entitled "Grignard reagents and transition metal catalysts" (a De Gruyter book, edited by J. Cossy). Grignard reagents or organozinc reagents, that is the question? From a given substrate, what is the best organometallic reagent and the best transition metal to form a C-C bond by using a cross-coupling reaction? The solution might be found in these two books.
Manganese Catalysis in Organic Synthesis A must-read reference for anyone interested in catalyst design and sustainable organic synthesis In Manganese Catalysis in Organic Synthesis, distinguished researcher Jean-Baptiste Sortais delivers an insightful and robust overview of the use of manganese in homogenous catalysis. The editor includes papers from authoritative academics describing the organometallic precursors used to develop manganese catalysts and covers critical applications in organic synthesis, including reduction to oxidation reactions, C-C, C-N, C-X bond formation reactions, cross-coupling reactions, C-H bond activation to dihydroxylation and epoxidation reactions. Manganese Cata...
In 1912, the Chemistry Nobel Prize was awarded for the discovery of the so-called Grignard reagents. Nowadays, many transition metal variants are developed to modify reactivity and selectivity of the C–C bond formation reaction. The Grignard reaction is one of the fundamental organometallic reactions, often used in alcohol syntheses. With transition metals like iron, cobalt and nickel or with noble metals like copper, silver and palladium, modern Grignard reagents can be designed in reactivity, selectivity and functional group tolerance. This book, written by international experts, presents an overview on timely Grignard chemistry involving transition metals.
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The main aim of this book is to provide a complete picture of current research on phosphazene compounds carried out around the world. The book opens with a general introduction, then moves on to cover synthetic aspects of phosphazene polymers, their characterization in solution and from the theoretical, thermal, and mechanical points of view; application aspects of poly(organophosphazenes); and the synthesis, characterization, and practical utilization of cyclophosphazenes. There is particular focus on the use of cyclophosphazenes as hydraulic fluids and additives, as cores for star polymers or dendrimers, and as starting substrates for supramolecular chemistry and nanostructured materials. The spectroscopic characterization of these compounds by NMR and Raman techniques is also discussed. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
In Exploding the Myths Surrounding ISO9000, Andrew W Nichols debunks many of the common misconceptions about the standard, and describes the many advantages it brings. Drawing on more than 25 years of hands-on experience, Andy gives clear, practical and up-to-date advice on how to implement ISO9000 to maximum effect.
The two-volume set on C-1 Building Blocks in Organic Synthesis critically reviews the state of the art of a wide variety of reactions by which one carbon atom is added to an organic molecule, forming a C-C bond. In spite of the numerous classic reactions of this kind, there has been enormous progress in recent years, especially for those reactions involving catalytic methods. Introduction of substituted methyl groups is a major challenge and only very recently the first catalysts have been discovered that enable the introduction of fluoromethyl groups in aromatics.
Gleria (National Research Council, Italy) and De Jaeger (chemistry, University of Sciences and Technologies, France) present work on applications of cyclophosphazenes and on the spectroscopic properties of both linear and cyclic phosphazene derivatives. Some applications described include polymer mesophases and nanostructured materials based on phosphazenes, Raman spectra of short linear and cyclic molecular oligomers and of polymeric chlorophosphazenes, and crown ether bearing phosphazenes. Other subjects presented include star polymers with cyclotriphosphazene cores, and construction and functionality of supramolecules based on cyclotriphosphazenes. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
Henry Harman (ca. 1754-1819) and his wife Esther? (d. ca. 1830) arrived in Canada in 1796 and petitioned the British Crown for land. The land was situated 15-20 miles north of the town of York, on the newly opened "Yonge Street". Today that land forms part of the town of Aurora, north of Toronto, Ontario, Canada. They had at least five children born between 1786 and 1795 before moving to Canada in 1796 and settling in King Twp. These children were born in the United States, and five more children were born in King Township. Descendants live mainly in Canada but also in Michigan, New York and California and elsewhere.