Download or read book Rhodium catalyzed cooligomerization of ethylene with conjugated dienes written by and published by Cuvillier Verlag. This book was released on 2006-06-07 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The catalytic cooligomerizations of olefins are among the most important C-C coupling reactions. Many transition metals have been used as catalysts for this kind of reactions. They are rhodium, ruthenium, nickel, cobalt, palladium and iron etc.. In this paper the rhodium catalyzed cooligomerizations of ethylene and conjugated dienes were mainly studied. Rhodium catalyzed cooligomerization of ethylene with dienes gives versatile products with wide industrial applications. • For example, rhodium catalyzed cooligomerization of ethylene and 1,3-butadiene produces 1,4-hexadiene with a high selectivity to its trans-form, which is an important intermediate for the synthesis of EPDM (Ethylene-Propylene-Diene-Monomer). • Rhodium catalyzed cooligomerization of ethylene with conjugated methyl linoleate yields the branched and unsaturated fatty substances. The linoleate is a fatty substance direct from nature and sustainable resources. The branched fatty products and their derivatives possess low melting points and pour points, which have attractive prospects of applications in lubricants, cosmetics and some other industrial fields. • The rhodium catalyzed cooligomerization of ethylene and styrene affords 3-phenyl- 1-butene and serves as a model reaction for the synthesis of compounds with pharma- cological activity. Newsolventsystemsweredevelopedforthesecatalyticreactions. Mixturesofpolyethy- leneglycol1000andwaterwereusedfortherhodiumcatalyzedcooligomerizationofethy- lene and 1,3-butadiene. By using PEG1000/water solvent systems selective synthesis of trans-1,4-hexadiene has been achieved under moderate reaction conditions. PEG1000 based novel temperature-dependent multi-solvent systems were developed for the reac- tion of ethylene and conjugated methyl linoleate. Some poly-ether modified phosphorous ligands were synthesized and used to condition the product selectivity and suppress the catalyst leaching. Cinnamyl chloride was used as catalyst promoter and was found to be very effective in reactivating the decayed rhodium catalysts. More interesting is that the addition of this organic chloride largely enhanced the activity of rhodium catalysts in the reaction of ethylene and styrene.
Download or read book Advances in Organometallic Chemistry written by and published by Academic Press. This book was released on 1979-06-28 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Organometallic Chemistry
Download or read book Integrated Chemical Processes in Liquid Multiphase Systems written by Matthias Kraume and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-06-21 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid multiphase processes represent a promising option for realizing novel, efficient, and sustainable production processes, as required for the transformation towards climate-neutral manufacturing processes. This volume presents the results obtained over twelve years in the DFG-funded collaborative project Transregio 63 “Integrated Chemical Processes in Liquid Multiphase Systems”. In an interdisciplinary approach to the design and operation of such processes, essential principles of Green Chemistry are realized, such as using long-chain olefins as model representatives of renewable raw materials, highly effi cient catalysts, and green solvents, linked with process optimization to improve energy and material efficiency. Experts from different fields addressed all steps of the development process, from the description of the reactions on the molecular level via thermodynamics and the design of efficient separation processes to the operation of entire miniplants for liquid multiphase production processes. Thus, the complete development chain from the first reaction-related investigations in the laboratory to the technological realization in miniplants with model-based control is demonstrated. Numerous methodological innovations are proposed and validated using several innovative phase systems (thermomorphic multiphase systems, microemulsion systems, Pickering emulsions) and homogeneously catalyzed reactions. Engineers and chemists from the chemical industry as well as advanced students and researchers will get valuable insights into the physico-chemical phenomena in chemical multiphase processes and benefit from recommendations concerning methods for the selection of phase systems and rapid model-based process development.
Download or read book Comprehensive Organometallic Chemistry written by Geoffrey Wilkinson and published by . This book was released on 1982 with total page 1592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhodium catalyzed Diene allene allene and Diene alkyne allen 4 2 2 Cycloadditions written by James Lancaster (III) and published by . This book was released on 2013 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin of the Chemical Society of Japan written by Nihon Kagakkai and published by . This book was released on 1972 with total page 1410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rhodium Catalyzed Hydroacylation of Ethylene with Unsaturated Aldehydes written by Krishnakant P. Vora and published by . This book was released on 1981 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalyst Components for Coupling Reactions written by Gary A. Molander and published by Wiley. This book was released on 2008-09-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long awaited Handbook for all synthetic chemists working on coupling reactions, compiling all major catalyst components in use in the area. Consists of a compilation of articles taken from the EROS database, with the inclusion of about 20 newly commissioned catalysts/pre-catalysts/ligands that have made an impact in this area of synthetic organic chemistry. Includes catalyst systems used in Heck, Kumada-Tamao-Corriu, Suzuki-Miyaura, Hiyama-Hatanaka, Negishi, Migita-Kosugi-Stille, Buchwald-Hartwig, and Tsuji-Trost coupling reactions.
Download or read book Organometallics in Organic Synthesis written by Armin de Meijere and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: More and more possible applications of organometallic compounds in organic synthesis have been uncovered and a growing number of scientists are attracted to this area of research. This book presents an state-of-the-art account of the successful application of main- and transition metal mediated syntheses. It will stimulate new ideas and initiate further research in all areas of this fascinating chemistry.
Download or read book Principles and Applications of Organotransition Metal Chemistry written by James Paddock Collman and published by . This book was released on 1987 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook introduces students and experienced chemists to a rapidly growing interdisciplinary subject. It incorporates a thorough revision of the earlier edition, and includes all new developments.
Download or read book Comprehensive Coordination Chemistry II written by J. A. McCleverty and published by Newnes. This book was released on 2003-12-03 with total page 11845 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Coordination Chemistry II (CCC II) is the sequel to what has become a classic in the field, Comprehensive Coordination Chemistry, published in 1987. CCC II builds on the first and surveys new developments authoritatively in over 200 newly comissioned chapters, with an emphasis on current trends in biology, materials science and other areas of contemporary scientific interest.
Download or read book Transition Metal Catalysed Reactions written by International Union of Pure and Applied Chemistry and published by . This book was released on 1999 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Organic Chemistry of Nickel written by P.W. Jolly and published by Elsevier. This book was released on 2012-12-02 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Organic Chemistry of Nickel, Volume I: Organonickel Complexes is devoted to a description of the organonickel complexes. The major goal is to provide a reference work, and for this reason a conventional layout has been adopted with separate chapters devoted to each type of organic ligand. In the interest of readability, known compounds have been assembled in tables at the end of each chapter, thereby allowing the text to be used for discussions of the general chemistry involved and to highlight the special reactions associated with nickel. Conscious of the needs of organometallic chemists, the authors included systems in which no nickel-carbon bond is involved. Among these is a chapter on the tetrakisligand nickel complexes and sections on dioxygen and azobenzene complexes. The nitrosyl complexes and complexes containing a metal-metal bond—topics frequently considered to be part of the domain of the organometallic chemist—have not received individual attention. Tables of the observed bond distances in organonickel complexes are provided as an Appendix; a short list of the more important review articles relevant to each organic ligand can be found at the end of each chapter.
Download or read book Catalytic Polymerization of Olefins written by T. Keii and published by Elsevier. This book was released on 1986-04-01 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the proceedings of a symposium which was attended by researchers from all over the world who reported on and discussed recent advances in the field of catalytic polymerization of olefins. Over two decades have elapsed since the discovery of the Ziegler-Natta catalyst. Tremendous research effort has been aimed at improving this marvelous catalyst. In twenty-five years since the first publication, more than 15,000 papers and patents on the subject and on related subjects have appeared. This effort has yielded new generations of Ziegler-Natta catalysts with superior activity and stereospecificity. The complexities arising from the heterogeneity of the catalyst, however, have hindered understanding of the catalytic processes which take place on the catalyst surface. Nevertheless, many fundamental features of the catalyst system have now been clarified reasonably well. Recently a highly active homogeneous catalytic system has been developed, which is capable of catalyzing even isotactic polymerization of propene. There is no doubt that this finding will not only contribute to our understanding of the detailed mechanism of polymerization but also stimulate the development of various kinds of tailored polymers. Thus this subject will remain of paramount importance in the development of chemistry and polymer science for a long time to come.
Download or read book Industrial Applications of Homogeneous Catalysis written by A. Mortreux and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysts are now widely used in both laboratory and industrial-scale chemistry. Indeed, it is hard to find any complex synthesis or industrial process that does not, at some stage, utilize a catalytic reaction. The development of homogeneous transition metal catalysts on the laboratory scale has demonstrated that these systems can be far superior to the equivalent heterogeneous systems, at least in terms of selectivity. is an increasing interest in this field of research from both an Thus, there academic and industrial point of view. In connection with the rapid developments in this area, four universities from the E.E.C (Aachen, FRG; Liege, Belgium; Milan, Italy; and Lille, France) have collaborated to organise a series of seminars for high-level students and researchers. These meetings have been sponsored by the Commission of the E.E.C and state organizations. The most recent of these meetings was held in Lille in September 1985 and this book contains updated and expanded presentations of most of the lectures given there. These lectures are concerned with the field of homogeneous transition metal catalysis and its application to the synthesis of organic intermediates and fine chemicals from an academic and industrial viewpoint. The continuing petroleum crisis which began in the early 1970s has given rise to the need to develop new feedstocks for the chemical industry.
Download or read book Pandex Current Index to Scientific and Technical Literature written by and published by . This book was released on 1970 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
