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Migration Of Organic Groups From Zirconium To Boron
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Book Synopsis Migration of Organic Groups from Zirconium to Boron by : Ramona Quintanilla
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.
Book Synopsis The Migration of Alkyl Groups from Zirconium to Boron Compounds by : Stephan Rodewald
Download or read book The Migration of Alkyl Groups from Zirconium to Boron Compounds written by Stephan Rodewald and published by . This book was released on 1990 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Migration of Organic Groups from Zirconacycles to Boranes by : Stephen Craig Yabut
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:
Book Synopsis Transmetallation from Zirconium to Boron by : Farhad Ghazi Mizori
Download or read book Transmetallation from Zirconium to Boron written by Farhad Ghazi Mizori and published by . This book was released on 2004 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Organic Synthesis by :
Download or read book Comprehensive Organic Synthesis written by and published by Newnes. This book was released on 2014-02-14 with total page 9815 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Comprehensive Organic Synthesis—winner of the 2015 PROSE Award for Multivolume Reference/Science from the Association of American Publishers—builds upon the highly respected first edition in drawing together the new common themes that underlie the many disparate areas of organic chemistry. These themes support effective and efficient synthetic strategies, thus providing a comprehensive overview of this important discipline. Fully revised and updated, this new set forms an essential reference work for all those seeking information on the solution of synthetic problems, whether they are experienced practitioners or chemists whose major interests lie outside organic synthesis. In addition, synthetic chemists requiring the essential facts in new areas, as well as students completely new to the field, will find Comprehensive Organic Synthesis, Second Edition, Nine Volume Set an invaluable source, providing an authoritative overview of core concepts. Winner of the 2015 PROSE Award for Multivolume Reference/Science from the Association of American Publishers Contains more than170 articles across nine volumes, including detailed analysis of core topics such as bonds, oxidation, and reduction Includes more than10,000 schemes and images Fully revised and updated; important growth areas—including combinatorial chemistry, new technological, industrial, and green chemistry developments—are covered extensively
Download or read book Special Publication written by and published by . This book was released on 1980 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Current Topics in the Chemistry of Boron by : George Walter Kabalka
Download or read book Current Topics in the Chemistry of Boron written by George Walter Kabalka and published by . This book was released on 1994 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the 8th International Meeting on Boron Chemistry, held at the University of Tennessee, USA, in July 1993. The presentation covers all aspects of boron chemistry, including synthetic methods, molecular structure, bonding theory and applications.
Book Synopsis Comprehensive Organic Functional Group Transformations II by :
Download or read book Comprehensive Organic Functional Group Transformations II written by and published by Elsevier. This book was released on 2004-12-16 with total page 9196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Organic Functional Group Transformations II (COFGT-II) will provide the first point of entry to the literature for all scientists interested in chemical transformations. Presenting the vast subject of organic synthesis in terms of the introduction and interconversion of all known functional groups, COFGT-II provides a unique information source documenting all methods of efficiently performing a particular transformation. Organised by the functional group formed, COFGT-II consists of 144 specialist reviews, written by leading scientists who evaluate and summarise the methods available for each functional group transformation. Also available online via ScienceDirect – featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. By systematically treating each functional group in turn the work also identifies what is not known, thus pointing the way to new research areas Follows the systematic layout of the successful 1995 COFGT reference work, based on the arrangement and bonding of hetero-atoms around a central carbon atom The work will save researchers valuable time in their research as each chapter is written by experts who have critically read and reviewed the literature and presented the best methods of forming every known functional group
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Boron Science by : Narayan S. Hosmane
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
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1999 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Organic Functional Group Transformations by : Alan R. Katritzky
Download or read book Comprehensive Organic Functional Group Transformations written by Alan R. Katritzky and published by Elsevier. This book was released on 1995 with total page 1452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Volume covers the formation of carbon-carbon single-, double- and triple bonds by substitution and addition reactions as well as by various rearrangements. The formation of carbon-carbon multiple bonds by elimination and condensation procedures is fully documented. In addition the synthesis of carbon-hydrogen bonds principally by substitution and addition reactions is featured as is the preparation of a wide variety of carbon-centred anions, cations and radicals.
Book Synopsis Science of Synthesis: Houben-Weyl Methods of Molecular Transformations Vol. 6 by : Dieter E. Kaufmann
Download or read book Science of Synthesis: Houben-Weyl Methods of Molecular Transformations Vol. 6 written by Dieter E. Kaufmann and published by Thieme. This book was released on 2014-05-14 with total page 2230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Science of Synthesis: Houben-Weyl Methods of Molecular Transformations is the entirely new edition of the acclaimed reference series, Houben-Weyl, the standard synthetic chemistry resource since 1909. This new edition is published in English and will comprise 48 volumes published between the years 2000 and 2008. Science of Synthesis is a quality reference work developed by a highly esteemed editorial board to provide a comprehensive and critical selection of reliable organic and organometallic synthetic methods. This unique resource is designed to be the first point of reference when searching for a synthesis strategy. Contains the expertise of presently 400 leading chemists worldwide Critically evaluates the preparative applicability and significance of the synthetic methods Discusses relevant background information and provides detailed experimental procedures For full information on the Science of Synthesis series, visit the Science of Synthesis Homepage.
Book Synopsis Comprehensive Medicinal Chemistry II by : David J Triggle
Download or read book Comprehensive Medicinal Chemistry II written by David J Triggle and published by Elsevier. This book was released on 2006-12-29 with total page 9367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of Comprehensive Medicinal Chemistry was published in 1990 and was very well received. Comprehensive Medicinal Chemistry II is much more than a simple updating of the contents of the first edition. Completely revised and expanded, this new edition has been refocused to reflect the significant developments and changes over the past decade in genomics, proteomics, bioinformatics, combinatorial chemistry, high-throughput screening and pharmacology, and more. The content comprises the most up-to-date, authoritative and comprehensive reference text on contemporary medicinal chemistry and drug research, covering major therapeutic classes and targets, research strategy and organisation, high-throughput technologies, computer-assisted design, ADME and selected case histories. It is this coverage of the strategy, technologies, principles and applications of medicinal chemistry in a single work that will make Comprehensive Medicinal Chemistry II a unique work of reference and a single point of entry to the literature for pharmaceutical and biotechnology scientists of all disciplines and for many industry executives as well. Also available online via ScienceDirect (2006) - featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. Comprehensively reviews - the strategies, technologies, principles and applications of modern medicinal chemistry Provides a global and current perspective of today's drug discovery process and discusses the major therapeutic classes and targets Includes a unique collection of case studies and personal assays reviewing the discovery and development of key drugs
Download or read book Mass Spectrometry Bulletin written by and published by . This book was released on 1992 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Chemical Society. Committee on Professional Training Publisher : ISBN 13 :9780841227231 Total Pages :1700 pages Book Rating :4.2/5 (272 download)
Book Synopsis ACS Directory of Graduate Research 1993 by : American Chemical Society. Committee on Professional Training
Download or read book ACS Directory of Graduate Research 1993 written by American Chemical Society. Committee on Professional Training and published by . This book was released on 1993 with total page 1700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Organic Synthesis by : Barry M. Trost
Download or read book Comprehensive Organic Synthesis written by Barry M. Trost and published by Elsevier. This book was released on 1991 with total page 1174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 8.
