Download or read book Synthesis and Reactivity of Three membered Phosphorus Heterocycles written by Mark Andrew McDonald and published by . This book was released on 1997 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phosphorus Heterocycles II written by Raj K. Bansal and published by Springer. This book was released on 2010-04-21 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: S. Sasaki: Heterophenes Carrying Phosphorus Functional Groups as Key Structures.- D.D. Enchev: Synthesis and Biological Activity of 2,5-Dihydro-1,2-Oxaphosphole-2-Oxide Derivatives.- D. Gudat: Recent Developments in the Chemistry of N -Heterocyclic Phosphines.- J. Drabowicz ∙ D. Krasowska ∙ A. Łopusiński ∙T.S.A. Heugebaert ∙ C.V. Stevens: Selected Five-Membered Phosphorus Heterocycles Containing a Stereogenic Phosphorus.- G. Keglevich: 1-(2,4,6-Trialkylphenyl)-1 H -Phospholes with a Flattened P-Pyramid: Synthesis and Reactivity.- N. Gupta: Recent Advances in the Chemistry of Diazaphospholes

Download or read book Synthesis and Pi ligand Exchange Reactions in Three membered Phosphorus and Sulfur Heterocycles written by Ian Geoffrey Hamilton and published by . This book was released on 2001 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Reactivity of Phosphorus containing Heterocycles and Tetrahedranes written by Martin-Louis Y. Riu and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3,5-Diphenyl-2-phosphafuran (DPF) was synthesized by treating trans-chalcone with dibenzo-7[lambda]3 -phosphanorbornadiene EtOPA (A = C14H10, anthracene), a source of ethoxyphosphinidene, followed by formal elimination of ethanol. DPF is a potent diene and readily reacts with dienophiles at room temperature. Mild heating of the corresponding ethylene adduct results in the retro-Diels-Alder reaction. MesN2PA (Mes = mesityl), a synthon of mesitylphosphaazide (MesN2P) and anthracene, was synthesized by treating [Ph3BPA][Na(OEt2)2] with [MesN2]OTf (OTf = CF3SO3[superscript -]). MesN2PA reacts with alkynes and phosphaalkynes to form the corresponding [3+2] phosphaazide-(phospha)alkyne cycloadducts and anthracene. Mesitylphosphaazide transfer likely proceeds via a 1,3-dipolar cycloaddition reaction, followed by anthracene elimination. cis-Macrocyclic diphosphine (PhPA)2 was prepared by treating [EtOP2A2]AlCl4 with phenylmagnesium chloride (2 equiv). X-ray diffraction analysis of the the corresponding nickel dichloride complex shows the rigid, bowl-shaped cavity of (PhPA)2. Tri-tert-butylphosphatetrahedrane ([superscript t]BuC)3P(F)H. The phosphatetrahedrane core was confirmed spectroscopically and by X-ray diffraction analysis. Hydrogen-hydrogen bonding interactions between neighboring tert-butyl groups of ([superscript t]BuC)3P were computationally investigated and contribute approximately -6 kcal/mol of stabilization. Synthetically useful quantities of ([superscript t]BuC)3P were obtained using an improved synthesis based on fluoride-induced trimethylsilyl chloride elimination from chloro(trimethylsilyl)phosphine ([superscript t]BuC)3P(TMS)Cl. Despite the incorporation of phosphorus, ([superscript t]BuC)3P remains highly reactive and cage-opens to the corresponding cyclobutadiene when treated with catalytic triphenylborane. The proposed reactive intermediate was trapped by styrene and ethylene to form [4+2]-cycloadducts. ([superscript t]BuC)3P also functions as a spring-loaded phosphinidene synthon for nickel-catalyzed group transfer to unactivated alkenes, leading to phosphiranes, three-membered rings that contain a phosphorus atom. Deprotection of the corresponding phosphiranes was achieved by the addition of triflic acid to form a P-H bond and [[superscript t]Bu3C3]OTf, demonstrating that ([superscript t]BuC)3P can also be viewed as a 'PH' synthon. Tetrahydrofuran (THF) solutions of triphosphatetrahedrane HCP3 were generated by combining [Na(THF)3][P3Nb(ODipp)3] (Dipp = 2,6-diisopropylphenyl), bromodichloromethane, and INb(ODipp)3(THF). Removal of solvent under reduced pressure led to a black material that corresponds to a polymerized form of HCP3. X-ray diffraction analysis of a cationic iron complex of HCP3 confirmed the tetrahedral nature of the CP3 core. Computational studies suggest that triphosphatetrahedrane is the least strained tetrahedrane with as mixed carbon-phosphorus core.

Download or read book Phosphorous Heterocycles I written by Raj K. Bansal and published by Springer. This book was released on 2009-05-28 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: See Table of Contents (PMP)

Download or read book Synthesis Stereochemistry and Reactions of the Phosphorus Heterocycles written by James T. Most and published by . This book was released on 1979 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Reactivity of Phosphorus Heterocycles Using Sodium Phosphaethynolate as the Building Block written by Xiaodan Chen and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stereoselective Heterocyclic Synthesis III written by Peter Metz and published by Springer. This book was released on 2007-10-13 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keeping up with the advances in modern heterocyclic chemistry is essential for many of our colleagues in academia and industry. It is the aim of this series on "Stereoselective Heterocyclic Synthesis" to assist the chemical community in this respect by presenting a selection of exciting recent developments. As it was for the first two volumes (1997), the stereoselective synthesis of - or with the aid of - heterocycles is the common motif for all the chapters in this third volume. I am very glad that again leading researchers in this area have contrib- ed highly stimulating accounts with up-to-date coverage. "Stereoselective Heterocyclic Synthesis 111" features chapters on "Stereoselective Intramolecular J,3-Dipolar Cycloadditions" by I.N.N. Nambothiiri and A. Hassner giving an in depth survey of the generation and synthetic application of valuable 1,3-dipoles, "4-Acetoxy- and 4-Cyano-12-dioxanes in Synthesis" by C.J. Sinz and S.D. Rychnovsky presenting a comprehensive summary of the utility of the versatile title compounds in natural products synthesis, "The Synthetic Potential of Three-Membered Ring Aza-Heterocycles" by B. Zwanenburg and l? ten Holte highlighting the fascinating chemistry of aziridine and azirine carboxylic esters, and '(Synthesis of Medium-Sized Ring Lactams" by U. Nubbemeyer discussing a wide range of modern strategies for the stereoselective preparation of these important heterocycles

Download or read book The Chemistry of Heterocycles written by Vishnu Ji Ram and published by Elsevier. This book was released on 2019-06-06 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemistry of Heterocycles: Chemistry of Six to Eight Membered N,O, S, P and Se Heterocycles details the chemistry, behavior and potential of these important structures. The book presents a practical guide to international nomenclature, including discussions of fused ring systems, heteroatoms with abnormal valences, and bridged, spiro and polycyclic heterocycles. Three membered heterocycles are then the focus, along with their thermodynamic properties and importance in natural products, medicines, materials, and their unique aspects, such as strain, basicity and reactivity. Additional chapters cover 100 key heterocycle structures, from Azetidines, Pyrroles and Pyridines, to Benzoxepines and Oxocanes. Final chapters explore cutting-edge advances in the development of phosphorus and selenium based heterocycles. Provides clear, detailed information on each heterocyclic group, including structural features, such as ring strain, basicity, synthesis and reactivity towards electrophilic and nucleophilic reagents Highlights the latest advances in the field, including phosphorous and selenium-based heterocycles supported by numerous illustrations Includes details of functionalized heterocycles used as synthons for the construction of various arenes and heteroarenes

Download or read book Organophosphorus Chemistry written by Viktor Iaroshenko and published by John Wiley & Sons. This book was released on 2019-04-22 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the gap for an up-to-date reference that presents the field of organophosphorus chemistry in a comprehensive and clearly structured way, this one-stop source covers the chemistry, properties, and applications from life science and medicine. Divided into two parts, the first presents the chemistry of various phosphorus-containing compounds and their synthesis, including ylides, acids, and heterocycles. The second part then goes on to look at applications in life science and bioorganic chemistry. Last but not least, such important practical aspects as 31P-NMR and protecting strategies for these compounds are presented. For organic, bioinorganic, and medicinal chemists, as well as those working on organometallics, and for materials scientists. The book, a contributed work, features a team of renowned scientists from around the world whose expertise spans the many aspects of modern organophosphorus chemistry.

Download or read book 4 Membered Heterocycle Synthesis written by Navjeet Kaur and published by Elsevier. This book was released on 2023-07-26 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four-Membered Heterocycle Synthesis offers a comprehensive approach to these unstable organic compounds, providing a systematic introduction to the synthesis and reactions of all common four-membered heterocycles and illustrating different methods to prepare specific four-membered heterocycles. Four-membered heterocyclic compounds are known as a class of unstable organic compounds because of their strain characteristics, which make them very beneficial as precursors for the formation of a broad range of complex heterocyclic molecules and for synthetic elaboration. Provides a systematic introduction to the synthesis and reactions of all common four-membered heterocycles Highlights different methods to prepare specific 4-membered heterocycles Analyzes several types and families of compounds, with a large set of recent examples in the field

Download or read book Phosphorus III Ligands in Homogeneous Catalysis written by Paul C. J. Kamer and published by John Wiley & Sons. This book was released on 2012-05-09 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last 60 years the increasing knowledge of transition metal chemistry has resulted in an enormous advance of homogeneous catalysis as an essential tool in both academic and industrial fields. Remarkably, phosphorus(III) donor ligands have played an important role in several of the acknowledged catalytic reactions. The positive effects of phosphine ligands in transition metal homogeneous catalysis have contributed largely to the evolution of the field into an indispensable tool in organic synthesis and the industrial production of chemicals. This book aims to address the design and synthesis of a comprehensive compilation of P(III) ligands for homogeneous catalysis. It not only focuses on the well-known traditional ligands that have been explored by catalysis researchers, but also includes promising ligand types that have traditionally been ignored mainly because of their challenging synthesis. Topics covered include ligand effects in homogeneous catalysis and rational catalyst design, P-stereogenic ligands, calixarenes, supramolecular approaches, solid phase synthesis, biological approaches, and solubility and separation. Ligand families covered in this book include phosphine, diphosphine, phosphite, diphosphite, phosphoramidite, phosphonite, phosphinite, phosphole, phosphinine, phosphinidenene, phosphaalkenes, phosphaalkynes, P-chiral ligands, and cage ligands. Each ligand class is accompanied by detailed and reliable synthetic procedures. Often the rate limiting step in the application of ligands in catalysis is the synthesis of the ligands themselves, which can often be very challenging and time consuming. This book will provide helpful advice as to the accessibility of ligands as well as their synthesis, thereby allowing researchers to make a more informed choice. Phosphorus(III) Ligands in Homogeneous Catalysis: Design and Synthesis is an essential overview of this important class of catalysts for academic and industrial researchers working in catalyst development, organometallic and synthetic chemistry.

Download or read book Advances in Heterocyclic Chemistry written by and published by Academic Press. This book was released on 1989-02-01 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Heterocyclic Chemistry

Download or read book Carbon phosphorus Heterocycles The Synthesis and Reactions of 2 methyl 2 phospha v tetracyclo 3 2 1 o3 7 05 8 octane and Related Phosphetanes written by Louis Barash and published by . This book was released on 1972 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis Structure and Reactivity of Phosphorus and Arsenic Heterocycles written by Darren Ould and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phosphorus carbon Heterocyclic Chemistry written by François Mathey and published by Elsevier Science. This book was released on 2001 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume examines the synthesis, spectroscopic properties, reactivity and catalytic applications of all phosphorus-carbon heterocycles. The most significant phosphorus heterocycles incorporating other heteroatoms, such as heterophospholes and heterophosphinines, are also covered.

Download or read book Copper I Chemistry of Phosphines Functionalized Phosphines and Phosphorus Heterocycles written by Maravanji S. Balakrishna and published by Elsevier. This book was released on 2019-04-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Copper(I) Complexes of Phosphines, Functionalized Phosphines and Phosphorus Heterocycles is a comprehensive guide to one of the most widely used and extensively studied metals: copper. The numerous practical applications of copper compounds are discussed, including homogeneous and heterogeneous catalysis and their use as fungicides, pesticides, pigments for paints, resins and glasses, and in high-temperature superconductors. The remarkable structural flexibility of simple copper(I) complexes, such as cuprous halides is covered, including numerous structural motifs that, when combined with different ligand systems, exhibit linear, trigonal planar or tetrahedral geometries. This work is an essential reference for inorganic and coordination chemists, as well as researchers working on catalysis, anticancer reagents, luminescence, fluorescence and photophysical aspects.