Download or read book Regiochemistry of Fulvene 1 3 dipolar Cycloaddition Reactions written by Nasser Foroughifar and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthetic Applications of 1 3 Dipolar Cycloaddition Chemistry Toward Heterocycles and Natural Products Volume 59 written by Albert Padwa and published by John Wiley & Sons. This book was released on 2003-04-14 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dipolar cycloaddition reactions have found many useful applications in chemistry, particularly with respect to the synthesis of compounds with new chiral centers. Synthetic Applications of 1,3-Dipolar Cycloaddition Chemistry Toward Heterocycles and Natural Products updates the popular 1984 edition, featuring the advances made over the past twenty years and focusing on synthetic applications.

Download or read book 1 3 dipolar Cycloaddition Chemistry written by Albert Padwa and published by . This book was released on 1984 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study on Regiochemistry and Reactivity of 1 3 dipolar Cycloaddition of Diphenylnitrilimes to 1 Cyanocyclopentene written by Yiding Hu and published by . This book was released on 1994 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modern Applications of Cycloaddition Chemistry written by Paolo Quadrelli and published by Elsevier. This book was released on 2019-03-20 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern Applications of Cycloaddition Chemistry examines this area of organic chemistry, with special attention paid to cycloadditions in synthetic and mechanistic applications in modern organic chemistry. While many books dedicated to cycloaddition reactions deal with the synthesis of heterocycles, general applications, specific applications in natural product synthesis, and the use of a class of organic compounds, this work sheds new light on pericyclic reactions by demonstrating how these valuable tools elegantly solve synthetic and mechanistic problems. The work examines how pericyclic reactions have been extensively applied to different chemistry areas, such as chemical biology, biological processes, catalyzed cycloaddition reactions, and more. This work will be useful for organic chemists who deal with organic chemistry, medicinal chemistry, agrochemistry and material chemistry. - Provides details on the synthesis of antiviral and anticancer compounds, marking the key role of unconventional catalyzed cycloaddition reactions for preparing new derivatives in a unique reaction pathway that is scalable in industrial processes - Contains the most up-to-date review of the use of pericyclic reactions in drug delivery - Includes the enzyme-catalyzed processes involving cycloaddition reactions for different targets, demonstrating that cycloaddition is more common in nature than expected - Features new applications for cycloadditions in material chemistry and provides a general view of the most recent results in the area

Download or read book Synthetic Applications of 1 3 Dipolar Cycloaddition Chemistry Toward Heterocycles and Natural Products Volume 59 written by Albert Padwa and published by Wiley-Interscience. This book was released on 2002-11-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dipolar cycloaddition reactions have found many useful applications in chemistry, particularly with respect to the synthesis of compounds with new chiral centers. Synthetic Applications of 1,3-Dipolar Cycloaddition Chemistry Toward Heterocycles and Natural Products updates the popular 1984 edition, featuring the advances made over the past twenty years and focusing on synthetic applications.

Download or read book 1 3 dipolar Cycloaddition Reactions in Aqueous Media and Investigations Into Solid Phase Ether Synthesis written by Kason Bala and published by . This book was released on 2002 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1 3 dipolar Cycloaddition Reactions of Imines and Oximes written by William James Warnock and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1 4 Cycloaddition Reaction The Diels Alder Reaction in Heterocyclic Syntheses written by Jan Hamer and published by Elsevier. This book was released on 2013-07-19 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Chemistry, Volume 8: 1,4-Cycloaddition Reactions: The Diels-Alder Reaction in Heterocyclic Syntheses describes 1,4-cycloaddition reactions leading to the formation of five- or six-membered heterocyclic compounds. Divided into 13 chapters, this book starts with an overview of various 1,4-cycloaddition reaction equations in the presence of at least one atom other than carbon. The following chapters describe the reaction mechanisms of five- or six-membered ring formed upon reaction with a dienophile, which contains an atom other than carbon. Considerable chapters are devoted to compounds used as dienophiles, including trivalent phosphorus, cyanogens and cyanogens-like compounds, imino, azo, carbonyl, thiocarbonyl, and diene compounds, as well as oxygen. Other chapters highlight some 1,4-cycloaddition reactions taking place through free radical intermediates. This book is of value to organic and research chemists, as well as undergraduate and graduate organic chemistry students.

Download or read book The Chemistry of Double bonded Functional Groups 3 Dipolar cycloadditions involving X written by Saul Patai and published by . This book was released on 1977 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reactivity and diastereoselectivity in 1 3 dipolar cycloaddition reactions to the Fe N written by Nantko Feiken and published by . This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1 3 dipolar Cycloaddition Reactions of Some 1 aryl 3 oxidopyridinium Betaines and Further Consersions written by Lemi B. Turker and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Kinetic and Solvent Study of 1 3 dipolar Cycloaddition Reactions of N isopropyl C delta 4 cycloheptylnitrone and N phenyl C delta 4 cycloheptylnitrone written by George H. Greene and published by . This book was released on 1970 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and 1 3 dipolar Cycloaddition Reactions of 1 4 dihetero 1 3 diene Carbonyliron Complexes written by Ronnie Siebenlist and published by . This book was released on 1996 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1 3 Dipolar Cycloaddition Reactions written by Kurt Vesterager Gothelf and published by . This book was released on 1995 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computational Studies on the Reactivity Selectivity and Molecular Dynamics of Cycloaddition Reactions written by Peiyuan Yu and published by . This book was released on 2017 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first part of this dissertation describes computational studies of higher-order cycloadditions with a focus on elucidating the origins of periselectivity. These reactions involve ambimodal transition states (TS) and bifurcations of potential energy surface. Chapter 1 describes density functional theory (DFT) studies of a transannular [6+4] cycloaddition proposed in the biosynthesis of heronamide A, in which an unbridged 10-membered ring is formed. Ring and steric strains are found to be essential in controlling the product stability that makes this reaction feasible. Chapter 2 presents an Environment-Perturbed Transition State Sampling method to explore the mechanism of the enzyme SpnF-catalyzed Diels-Alder. A [6+4] cycloaddition is also involved and enzyme enhances the formation of [4+2] product, with respect to the counterparts in the gas phase and in water. Chapter 3 explores the mechanisms and selectivities of the cycloadditions of tropone to dimethylfulvene discovered in 1967 by Houk. The two proposed pathways by which a key intermediate are formed are united through the discovery of an ambimodal [6+4]/[4+6] TS using DFT calculations and molecular dynamics (MD) simulations. The second part of this dissertation describes computational studies of Diels-Alder reactions and 1,3-dipolar cycloadditions using DFT calculations, with a focus on the mechanisms and the origins of regio- and stereoselectivities. Chapter 4 reports the biochemical characterization of a Diels-Alderase found in the biosynthetic pathway of the cytotoxic myceliothermophin natural products. A theozyme model rationalizes both the substrate- and stereoselectivity of the enzyme. Chapter 5 discusses the concerted versus stepwise mechanisms of a series of dehydro-Diels-Alder (DDA) reactions. The reactivity of DDA reactions is controlled by the distortion energies required to achieve the TS geometries. Chapter 6 explores the mechanisms of Lewis acid-catalyzed Diels-Alder reactions of aryl allenes and acrylates. A stepwise mechanism involving short-lived zwitterion intermediates is established. The [2+2] cycloaddition is not observed experimentally because of the greater charge separation in the first step of the [2+2] cycloaddition. Chapter 7 focuses on the regioselectivity of 1,3-dipolar cycloadditions of benzo and mesitonitrile oxides with alkynyl pinacol and MIDA boronates. Calculated relative free energies of activation reproduce the experimentally observed product ratios. The electronic energies of activation are mainly controlled by distortion energies. Chapter 8 describes DFT studies of the first example of diazo esters as dienophiles in intramolecular Diels-Alder reactions with dienes. For comparison, the reactivities of diazo esters as 1,3-dipoles with dienes have also been explored. The usually observed 1,3-dipolar cycloaddition was not observed because of strong tether distortion in the (3+2) TS.

Download or read book Organic Reaction Mechanisms 2000 written by A. C. Knipe and published by John Wiley & Sons. This book was released on 2004-08-13 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents and surveys research described in literature between December 1999 and November 2000. As in previous volumes new mechanisms for the synthesis of all types of organic compounds will be included as well as such mechanisms as addition and elimination reactions, nucleophilic and electrophilic aromatic substitutions and molecular arrangements. This annual series on organic reaction mechanisms reasearch provides concise and comprehensive coverage of the years literature as well as discussions on important results. Each volume is extensively referenced to previous volumes and primary journals.