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Author : Stephen Craig Yabut
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (322 download)
Download or read book The Migration of Organic Groups from Zirconacycles to Boranes written by Stephen Craig Yabut and published by . This book was released on 1994 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ramona Quintanilla
Publisher :
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (318 download)
Download or read book Migration of Organic Groups from Zirconium to Boron written by Ramona Quintanilla and published by . This book was released on 1995 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trialkoxyboranes and trialkoxyboroxins are synthesized by a novel and efficient route of esterifying boric acid with various alcohols in the presence of calcium hydride. Some of these boranes were used as precursors for transmetallation reactions. Trialkoxyboroxins can be obtained using a 1:1 molar ratio of boric acid to alcohol in the presence of calcium hydride. A special feature of trialkoxyboranes and trialkoxyboroxins is their ability to be interconverted by the addition of the appropriate amounts of boric acid or the hydroxyl compound in the presence of calcium hydride. Biscyclopentadienylzirconium-alkenyl-chlorides, Cp2Zr(alkenyl)Cl, are prepared from the hydrozirconation of terminal and internal alkynes. A systematic investigation of the transmetallation of these alkenyl groups from zirconium to a variety of boron compounds is presented. The reaction of the organozirconium with a boron chloride or bromide results in the exchange of the halogen and alkenyl group, forming structurally different types of alkenylboranes in good to high yields. A general method for preparing pure organohaloboranes (RBX2 and R2BX) was developed with high isolated yields and product purity. The reaction proceeds via the exchange of the anhydrides of boronic or borinic acids, (RBO)3 or R2BOBR2 with trihaloboranes (BX3). The newly formed organohaloboranes can contain hydroboratable (primary or secondary), non-hydroboratable (tertiary or aryl) and chiral groups. To demonstrate the utility of the facile migration from zirconium to boron, the syntheses of trans, trans-1,3-dienes and trisubstituted olefins are examined. Generally the olefin synthesis, via organoboranes, has been limited to coupling of alkylvinylboranes that contain symmetrical vinyl groups. The high regioselectivity of the hydrozirconation reaction with unsymmetrical internal alkynes overcomes this limitation. Thus, trisubstituted olefins containing three distinct organic groups about the double bond were readily synthesized using established organoborane chemistry. A number of preparations for zirconacycles have appeared in the literature. Since borocycles, ring structures containing a boron atom, are not easily prepared via normal hydroboration reactions, the use of metallacycles to prepare borocycle derivatives was investigated.
Author : Narayan S. Hosmane
Publisher : CRC Press
ISBN 13 : 1439826633
Total Pages : 856 pages
Book Rating : 4.4/5 (398 download)
Download or read book Boron Science written by Narayan S. Hosmane and published by CRC Press. This book was released on 2016-04-19 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boron has made a significant impact in our lives through its quiet use in fertilizers, fungicides, soaps, detergents, and heat-resistant glassware. Boron Science: New Technologies and Applications addresses the applications of boron in chemistry, industry, medicine, and pharmacology by explaining its role in problems such as catalysis and hydrobora
Author : Tsutomu Ishikawa
Publisher : John Wiley & Sons
ISBN 13 : 9780470740866
Total Pages : 336 pages
Book Rating : 4.7/5 (48 download)
Download or read book Superbases for Organic Synthesis written by Tsutomu Ishikawa and published by John Wiley & Sons. This book was released on 2009-01-26 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guanidines, amidines and phosphazenes have been attracting attention in organic synthesis due to their potential functionality resulting from their extremely strong basicity. They are also promising catalysts because of their potential for easy molecular modification, possible recyclability, and reduced or zero toxicity. Importantly, these molecules can be derived as natural products – valuable as scientists move towards “sustainable chemistry”, where reagents and catalysts are derived from biomaterial sources. Superbases for Organic Synthesis is an essential guide to these important molecules for preparative organic synthesis. Topics covered include the following aspects: an introduction to organosuperbases physicochemical properties of organic superbases amidines and guanidines in organic synthesis phosphazene: preparation, reaction and catalytic role polymer-supported organosuperbases application of organosuperbases to total synthesis related organocatalysts: proton sponges and urea derivatives amidines and guanidines in natural products and medicines Superbases for Organic Synthesis is a comprehensive, authoritative and up-to-date guide to these important reagents for organic chemists, drug discovery researchers and those interested in the chemistry of natural products.
Author : D. M. P. Mingos
Publisher :
ISBN 13 :
Total Pages : 976 pages
Book Rating : 4.F/5 ( download)
Download or read book Comprehensive Organometallic Chemistry III, Volume 3 written by D. M. P. Mingos and published by . This book was released on 2007 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides essential information for any chemist or technologist who needs to use or apply organometallic compounds. Provides a comprehensive overview of recent developments in the field and attempts to predict trends in the field over the next ten years.
Author : Elena Fernández
Publisher : Springer
ISBN 13 : 3319130544
Total Pages : 334 pages
Book Rating : 4.3/5 (191 download)
Download or read book Synthesis and Application of Organoboron Compounds written by Elena Fernández and published by Springer. This book was released on 2015-03-04 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Organometallic Chemistry presents critical overviews of research results in organometallic chemistry. As our understanding of organometallic structure, properties and mechanisms increases, new ways are opened for the design of organometallic compounds and reactions tailored to the needs of such diverse areas as organic synthesis, medical research, biology and materials science. Thus the scope of coverage includes a broad range of topics in pure and applied organometallic chemistry, where new breakthroughs are being achieved that are of significance to a larger scientific audience. The individual volumes of Topics in Organometallic Chemistry are thematic. Review articles are generally invited by the volume editors.
Author :
Publisher :
ISBN 13 :
Total Pages : 780 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1995 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matthew G Davidson
Publisher : Royal Society of Chemistry
ISBN 13 : 1847550649
Total Pages : 555 pages
Book Rating : 4.8/5 (475 download)
Download or read book Contemporary Boron Chemistry written by Matthew G Davidson and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continued and evolving significance of boron chemistry to the wider chemical community is demonstrated by the international and interdisciplinary nature of the research reported in this book. Contemporary Boron Chemistry encompasses inorganic and organic compounds as well as polymers, solid-state materials, medicinal aspects and theoretical studies. Covering many areas of chemistry with boron at its centre, topics include applications to polyolefin catalysis, medicine, materials and polymers; boron cluster chemistry, including carboranes and metal-containing clusters; organic and inorganic chemistry of species containing only 1 or 2 boron atoms; and theoretical studies of boron-containing compounds. New materials with novel optical and electronic properties are also discussed. Comprehensive and up to date, graduates and researchers in a wide range of fields, particularly those in organometallic and organic chemistry and materials science, will welcome this book.
Author : Huanfeng Jiang
Publisher : Springer
ISBN 13 : 9783662489994
Total Pages : 0 pages
Book Rating : 4.4/5 (899 download)
Download or read book Haloalkyne Chemistry written by Huanfeng Jiang and published by Springer. This book was released on 2015-12-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents efficient and practical methods for the synthesis of various functionalized organic molecules from haloalkynes through different reaction processes such as cross-coupling reactions, nucleophilic additions and cycloadditions. It consists of four chapters demonstrating interesting examples of these transformations, and showcasing the synthetic power of haloalkynes for rapid assembly of complex molecular structures. Most of the protocols allow multiple bond-forming events to occur in a single operation, offering opportunities to advance chemical synthesis and address the increasing demands for green and sustainable chemistry. It also presents a wide range of functionalized products, including many synthetically useful conjugated cyclic and acyclic structures that have potential applications in materials science, chemical biology and natural product synthesis. This book is a valuable reference not only for organic chemists, but also for biologists and materials scientists involved in the modern synthesis of organic compounds and materials. Huanfeng Jiang and Wanqing Wu are both Professors at the School of Chemistry and Chemical Engineering, South China University of Technology, China. Chuanle Zhu is a Postdoctoral Fellow at the School of Chemistry and Chemical Engineering, South China University of Technology, China.
Author : Douglass F. Taber
Publisher : Oxford University Press
ISBN 13 : 0190646160
Total Pages : 289 pages
Book Rating : 4.1/5 (96 download)
Download or read book Organic Synthesis written by Douglass F. Taber and published by Oxford University Press. This book was released on 2017 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of Douglass Taber's columns originally published between 2013 - 2015 at www.organicchemistry.org
Author : Armando J. L. Pombeiro
Publisher : John Wiley & Sons
ISBN 13 : 1118742893
Total Pages : 848 pages
Book Rating : 4.1/5 (187 download)
Download or read book Advances in Organometallic Chemistry and Catalysis written by Armando J. L. Pombeiro and published by John Wiley & Sons. This book was released on 2013-10-11 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: A contemporary compilation of recent achievements in organometallic chemistry The prestigious International Conference on Organometallic Chemistry (ICOMC) was launched in 1963, providing a forum for researchers from around the world to share their findings and explore new paths to advance our knowledge and application of organometallic chemistry. The 25th ICOMC, held in Lisbon in 2012, gathered more than 1,200 participants from 54 countries. This volume celebrates the 25th Silver Edition and the 50th Gold Year of the ICOMC. Featuring contributions from invited 25th ICOMC speakers, Advances in Organometallic Chemistry and Catalysis highlights recent achievements and new and emerging areas of research in the field. Its seven sections cover: Activation and Functionalization of Carbon Single Bonds and Small Molecules Organometallic Synthesis and Catalysis Organometallic Polymerization Catalysis Organometallic Polymers and Materials Organometallic Chemistry and Sustainable Energy Bioorganometallic Chemistry Organometallic Electrochemistry Chapters discuss fundamental underlying concepts, offer illustrative examples and cases, and explore future avenues for continued research. Readers will discover basic principles and properties of organometallic compounds, reaction mechanisms, and detailed descriptions of current applications. Collectively, these chapters underscore the versatility, richness, and potential of modern organometallic chemistry, including its interrelationships with other scientific disciplines. All the contributions are extensively referenced, providing a gateway to the most important original research papers and reviews in organometallic chemistry. Presenting a contemporary understanding of organometallic chemistry and its many applications, Advances in Organometallic Chemistry and Catalysis is recommended for all researchers in the field, from students to advanced investigators.
Author : Junzo Otera
Publisher : John Wiley & Sons
ISBN 13 : 3527613277
Total Pages : 632 pages
Book Rating : 4.5/5 (276 download)
Download or read book Modern Carbonyl Chemistry written by Junzo Otera and published by John Wiley & Sons. This book was released on 2008-11-21 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: The carbonyl group is undoubtedly one of the most important functional groups in organic chemistry, both in its role as reactive center for synthesis or derivatisation and as crucial feature for special structural or physiological properties. Vast and profound progress has been made in all aspects modern carbonyl chemistry. These achievements are, however, rather dispersed in the literature and it is often not easy for the researcher obtain a comprehensive overview of a relevant topic. Modern Carbonyl Chemistry overcomes this inconvenience by collating the information for appropriate themes. In this work internationally renowned experts and leaders in the field have surveyed recent aspects and modern features in carbonyl chemistry, such as cascade-reactions, one-pot-syntheses, recognition, or site differentiation.
Author : Ken Tanaka
Publisher : John Wiley & Sons
ISBN 13 : 111862999X
Total Pages : 785 pages
Book Rating : 4.1/5 (186 download)
Download or read book Transition-Metal-Mediated Aromatic Ring Construction written by Ken Tanaka and published by John Wiley & Sons. This book was released on 2013-07-09 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: State-of-the-science methods, synthetic routes, and strategies to construct aromatic rings The development of new reactions for the synthesis of aromatic compounds is a highly active research area in organic synthesis, providing new functional organic materials, functional reagents, and biologically active compounds. Recently, significant advances in transition-metal-mediated reactions have enabled the efficient and practical construction of new aromatic rings with useful properties and applications. This book draws together and reviews all the latest discoveries and methods in transition-metal-mediated reactions, offering readers promising new routes to design and construct complex aromatic compounds. Integrating metal catalysis with aromatic compound synthesis, Transition-Metal-Mediated Aromatic Ring Construction offers a practical guide to the methods, synthetic routes, and strategies for constructing aromatic compounds. The book's five parts examine: [2+2+2], [2+2+1], and related cycloaddition reactions [4+2], [3+2], and related cycloaddition reactions Electrocyclization reactions Coupling and addition reactions Other important transformations, including methathesis reactions and skeletal rearrangement reactions Edited by Ken Tanaka, an internationally recognized expert in the field of transition-metal catalysis, the book features authors who are leading pioneers and researchers in synthetic reactions. Their contributions reflect a thorough review and analysis of the literature as well as their own firsthand laboratory experience developing new aromatic compounds. All chapters end with a summary and outlook, setting forth new avenues of research and forecasting new discoveries. There are also references at the end of each chapter, guiding readers to important original research reports and reviews. In summary, Transition-Metal-Mediated Aromatic Ring Construction offers synthetic chemists a promising new avenue for the development of important new aromatic compounds with a broad range of applications.
Author : Ilan Marek
Publisher : Wiley-VCH Verlag GmbH
ISBN 13 : 9783527304288
Total Pages : 512 pages
Book Rating : 4.3/5 (42 download)
Download or read book Titanium and Zirconium in Organic Synthesis written by Ilan Marek and published by Wiley-VCH Verlag GmbH. This book was released on 2002-01-01 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last years, the role of titanium and zirconium in organic synthesis has dramatically increased and nowadays, no synthetic chemist can afford to be without a sound knowledge of this fascinating organometal chemistry. This unique book, edited by Ilan Marek, thus summarizes the numerous applications and developments of these two group 4 early transition metal complexes. A plethora of internationally renowned experts and leading scientists in this field cover all the significant aspects of this increasingly important part of organic chemistry and bring the reader up to date. A particularly attractive and useful feature is the inclusion of typical experimental procedures, chosen for broad utility and application. This comprehensive demonstrates the diversity and the applications of these important compounds and is a must-have for all chemists working in organometallic or synthetic organic chemistry.
Author : Narayan S Hosmane
Publisher : World Scientific
ISBN 13 : 1786344432
Total Pages : 1051 pages
Book Rating : 4.7/5 (863 download)
Download or read book Handbook Of Boron Science: With Applications In Organometallics, Catalysis, Materials And Medicine (In 4 Volumes) written by Narayan S Hosmane and published by World Scientific. This book was released on 2018-08-07 with total page 1051 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boron science features in numerous fields including organic chemistry, organometallic chemistry and medicine. Boron is unique in all aspects of science and engineering and has made a significant impact in our daily lives through its use in fertilizers, germicides, fungicides, soaps, detergents, cancer drugs as well as many household glassware utensils, ceramics and cell phone windows. These volumes bring together an array of internationally renowned scientists to discuss the very latest developments in the application of boron in a broad range of disciplines. This multi-reference work describes the topic by appointing leading researchers to write on current developments in boron science, showcasing its importance to the four separate areas described in each volume: Organometallic Chemistry, Catalysis, Materials Chemistry and Medicine.Written to cover the full range of applications and innovations in boron science, this all-encompassing work offers us a one-stop reference compiled by world-leading researchers and practitioners of the subject, making it perfect for undergraduate and graduate students of chemistry, and researchers and practitioners interested in their professional development.
Author : François Diederich
Publisher : John Wiley & Sons
ISBN 13 : 3527604707
Total Pages : 528 pages
Book Rating : 4.5/5 (276 download)
Download or read book Acetylene Chemistry written by François Diederich and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acetylenes are an important and valuable class of compounds in organic synthesis. This book expands on this historically well-established concept, while incorporating the many new developments that have widened the number of applications in this field. It remains the only handbook available that embodies all the important facets of acetylene chemistry. Following the first section on synthesis, the leading authors deal with advanced materials before turning to the properties and theory of acetylenes, while a final section looks at the biological aspects. With its range of experimental procedures, this book is a practical aid for both organic and organometallic chemists, as well as for materials scientists, biochemists, and industrial chemists.
Author : Shaoguang Zhang
Publisher : Springer
ISBN 13 : 3662450216
Total Pages : 182 pages
Book Rating : 4.6/5 (624 download)
Download or read book The Chemistry of Zirconacycles and 2,6-Diazasemibullvalenes written by Shaoguang Zhang and published by Springer. This book was released on 2014-11-05 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, the author introduces two strategies used to construct various types of N-heterocycles, based on the chemistry of zirconacycles and 2,6-diazasemibullvalenes. In the first part, the author presents the development of multi-component cyclization of a zirconacyclobutene-silacyclobutene fused compound, nitriles and unsaturated compounds. These reactions provide synthetically useful methodology for various N-heterocycles such as 3-acyl pyrrole, pyrrolo[3,2-d]pyridazine and dihydropyrroloazepine, which are all difficult to synthesize by other means. The isolation and characterization of the key three-fused-ring Zr/Si-containing intermediates are also described in detail. These results show that the zirconacyclobutene-silacyclobutene fused compound behaves as a “chemical transformer” upon treatment with various substrates via the “coordination-induced skeleton rearrangement” mechanism. In the second part, the author demonstrates the synthesis and isolation of a series of 2,6-diazasemibullvalenes (NSBVs) from the reaction of 1,4-dilithio-1,3-dienes and nitriles, highlighting the significant progress made for the first time in this work: (1) determination of X-ray crystal structure of a substituted 2,6-diazasemibullvalene; (2) measurement of the activation barrier of its rapid intramolecular aza-Cope rearrangement in solution; (3) exploration of several reaction types of NSBV with diverse ring-expansion products and “bowl-shape” or “cage-shape” N-containing polycyclic skeletons; (4) demonstration of the localized structure as the predominant form and the homoaromatic delocalized structure as a minor component in the equilibrium using theoretical analysis. Based on well-founded results, this work sheds new light on this controversial topic.
