Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Pauson Khand Reaction written by Ramon Rios Torres and published by John Wiley & Sons. This book was released on 2012-03-01 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pauson-Khand reaction is an important reaction in the field of organic chemistry. It involves the transition-metal catalysed cycloaddition of an alkyne, an alkene and carbon monoxide, to produce cyclopentenones. The importance of this reaction originates from its high value in transforming simple components into the synthetically useful cyclopentenone unit, in which a high degree of molecular complexity can be achieved in a single step, with impressive stereochemical and regiochemical control. The Pauson-Khand Reaction investigates the nature and many variations of this reaction. Topics covered include: the mechanisms of Pauson‐Khand-type reactions non chiral intramolecular and intermolecular versions of Pauson‐Khand reactions asymmetric Pauson‐Khand reaction using chiral auxiliaries the enantioselective Pauson‐Khand reaction Pauson‐Khand reactions catalysed by metals other than cobalt unconventional Pauson‐Khand reactions the Pauson‐Khand reaction in total synthesis Presenting a comprehensive overview of this fundamental reaction, The Pauson-Khand Reaction will find a place on the bookshelves of any organic or organometallic chemist.
Download or read book Cycloaddition Reactions in Organic Synthesis written by W. Carruthers and published by Elsevier. This book was released on 2013-10-22 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demonstrates the wide scope of cycloaddition reactions, including the Diels-Alder reaction, the ene reaction, 1,3-dipolar cycloadditions and [2+2] cycloadditions in organic synthesis. The author, a leading exponent of the subject, illustrates the ways in which they can be employed in the synthesis of a wide range of carbocyclic and heterocyclic compounds, including a variety of natural products of various types. Special attention is given to intramolecular reactions, which often provide a rapid and efficient route to polycyclic compounds, and to the stereochemistry of the reactions, including recent and developing work on enantioselective synthesis.
Download or read book The Chemistry of Enols written by Zvi Rappoport and published by . This book was released on 1990-09-07 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the series covering all aspects of the chemistry of one of the important groups in organic chemistry, this volume concentrates on the chemistry of enols.
Download or read book Domino Reactions in Organic Synthesis written by Lutz F. Tietze and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 631 pages. Available in PDF, EPUB and Kindle. Book excerpt: Domino reactions enable you to build complex structures in one-pot reactions without the need to isolate intermediates- a dream comes true. In this book, the well-respected expert, Professor Lutz Tietze, summarizes the possibilities of this reaction type - an approach for an efficiant, economically benificial and ecological benign synthesis. A definite must for every organic chemist.
Download or read book Strategies and Tactics in Organic Synthesis written by Michael Harmata and published by Academic Press. This book was released on 2004-11-03 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title provides a forum for investigators to discuss their approach to the science and art of organic synthesis in a unique way. There are stories that vividly demonstrate the power of the human endeavour known as organic synthesis and the creativity and tenacity of its practitioners.
Download or read book Reviews in Computational Chemistry written by Kenny B. Lipkowitz and published by Wiley-VCH Verlag GmbH. This book was released on 1995 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume in computational chemistry includes aspects of: theoretical chemistry, physical chemistry, computer graphics in chemistry, molecular structure, and pharmaceutical chemistry.
Download or read book Artificial Metalloenzymes and MetalloDNAzymes in Catalysis written by Montserrat Diéguez and published by John Wiley & Sons. This book was released on 2018-02-21 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important reference for researchers in the field of metal-enzyme hybrid catalysis Artificial Metalloenzymes and MetalloDNAzymes in Catalysis offers a comprehensive review of the most current strategies, developed over recent decades, for the design, synthesis, and optimization of these hybrid catalysts as well as material about their application. The contributors—noted experts in the field—present information on the preparation, characterization, and optimization of artificial metalloenzymes in a timely and authoritative manner. The authors present a thorough examination of this interesting new platform for catalysis that combines the excellent selective recognition/binding properties of enzymes with transition metal catalysts. The text includes information on the various applications of metal-enzyme hybrid catalysts for novel reactions, offers insights into the latest advances in the field, and contains an informative perspective on the future: Explores the development of artificial metalloenzymes, the modern and strongly evolving research field on the verge of industrial application Contains a comprehensive reference to the research area of metal-enzyme hybrid catalysis that has experienced tremendous growth in recent years Includes contributions from leading researchers in the field Shows how this new catalysis combines the selective recognition/binding properties of enzymes with transition metal catalysts Written for catalytic chemists, bioinorganic chemists, biochemists, and organic chemists, Artificial Metalloenzymes and MetalloDNAzymes in Catalysis offers a unique reference to the fundamentals, concepts, applications, and the most recent developments for more efficient and sustainable synthesis.
Download or read book The Alkaloids written by R. H. Manske and published by . This book was released on 1965-08-01 with total page 861 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Applications of the Pauson Khand Reaction and Studies Towards the Synthesis of the Hamigerans written by Christian E. Madu and published by ProQuest. This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation is divided into two parts. The first part describes the dicobalt octacarbonyl mediated synthesis of medium sized rings via the intramolecular Pauson-Khand (IMPK) reaction. The cyclization of 1,8-enynes has proved to be difficult via the IMPK reaction due to entropy reasons. To overcome this limitation we attempted this cyclization in the presence of an ortho-buttressing group (t-butyl group) on the aromatic ring so as to reduce the conformationally allowed volume of the alkene arm of the substrate. The construction of the substrates started with O-alkenylation of the commercially available 3,5 di- tert-butyl-2-hydroxylbenzaldehyde and then the O-alkenylation products were alkynylated using ethynyl Grignard reagents to afford the corresponding enynes. These enynes successfully engaged in the both thermal and oxidative IMPK reaction to afford 5,7,6-tricyclic systems. With the parent enynes we observed diketo-compounds as the major product and traces of the expected PK product. When the alkyne arm of the enynes was substituted, the cyclization gave both the reduced PK product and the expected PK product. In general, the thermal mode gave a better diastereoselectivity when compared to the oxidative mode. Attempts to extend these result to a higher homolog to provide 5,8,6 tricyclic systems unfortunately failed. Thus this work describes a new methodology for the construction of medium (>6) sized rings via IMPK reaction. A second system was investigated which examined whether highly congested systems, related to those found in the hamigeran benzannulated terpenes, could be constructed. These experiments were successful, setting the stage for the studies described in the second section. The second part describes approach to the synthesis of the hamigerans by the application of the above developed IMPK methodology. The cyclization substrate was accessed from commercially available salicylic acid. The directed ortho metalation of the amide and treatment with iodine gave the iodo aryl amide. This was subsequently alkynylated using a Sonogashira cross-coupling reaction and then alkenylated via a Grignard reaction. The enyne was the subjected to IMPK reaction to afford the tricyclic core of the hamigerans.
Download or read book Pharmaceutical Process Chemistry written by Takayuki Shioiri and published by John Wiley & Sons. This book was released on 2010-12-09 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the whole area of process chemistry in the pharmaceutical industry, this monograph provides the essential knowledge on the basic chemistry needed for future development and key industrial techniques, as well as morphology, engineering and regulatory compliances. Application-oriented and well structured, the authors include recent examples of excellent industrial production of active pharmaceutical ingredients.
