Search results for ""Author Scott E. Denmark""

Written by a "who is who" of leading organic chemists, this anniversary volume represent the Organic Reactions editors' choice of the most important, ground-breaking and versatile reactions in current organic synthesis. The 15 reaction types selected for this volume include reactions for carbon-carbon bond formation, cross-coupling reactions, hydro- and halofunctionalizations, among many others. In line with the successful recipe of the series, each chapter is focused on a single reaction, discussing its mechanism and stereochemistry, scope and limitations, applications to synthesis, comparison with other methods, and experimental procedures. Each chapter concludes with a tabular survey of selected key application examples, complete with reported reaction conditions and yields, to serve as a quick reference guide for synthesis planning.

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The 97th volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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The latest volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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Volume 80 in the venerable Organic Reactions series contains two chapters. The first describes the use of chiral rhodium complexes to effect catalytic, asymmetric carbon-hydrogen insertion reactions intramolecularly. It details the structural scenarios in which diazocarbonyl compounds can be generated and activated to form, inter alia, lactones, lactams and cyclic ketones. The second chapter describes the use of (chiral) rhodium complexes in combination with diazocarbonyl compounds, but in this case to effect a remarkable transformation that dramatically increases the molecular complexity of the substrates.

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This series provides the most comprehensive and highly focused treatment of important organic reactions currently available. All volumes of Organic Reactions (including this one) are collections of chapters each devoted to a single reaction or a definitive phase of a reaction, of wide applicability. The authors have had experience with the processes surveyed. The subjects are presented from the preparative viewpoint and particular attention is given to limitations, interfering influences, effects of structure, and the selection of experimental techniques. Each chapter includes several detailed procedures illustrating the significant modifications of the method.

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Volume 76 in the venerable Organic Reactions series comprises three chapters that cover the ever-increasing emphasis of transition metal catalysis in organic synthesis. These three chapters represent some of the most important transformations that enable the construction of carbon-carbon bonds, heterocycles and carbon-heteratom bonds. This volume features a comprehensive treatment of transition metal (palladium, nickel, copper) catalyzed a-arylation of enolates derived from many common functional groups such as ketones, aldehydes, esters and nitriles (Prim, Marque, Gaucher, Campagne) including enantioselective variants; palladium catalyzed cyclization to form indoles (Cacchi, Fabrizi, Goggiamani) one of the most prevalent and important classes of heterocycles in natural products and pharmaceutical agents; and an overview of a newly developed dihydroxylation reaction of alkenes (Donohoe, Bataille, Innocenti) that uses hydrogen bonding interactions to direct the delivery of an osmium catalyst with high selectivity. As with all Organic Reactions chapters, these reviews emphasize the preparative aspects of the featured transformation and contain comprehensive compilations of all known examples in the tables.

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The 98th volume in this series for organic chemists in academia and industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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Volume 79 in the venerable Organic Reactions series contains two chapters. The first addresses cross-coupling reactions of organotrifluoroborate salts, useful in the development of natural products, materials, and pharmacologically active substances. It is an excellent companion to two previous chapters on tin-based and silicon-based cross-couplings contained in Volumes 50 and 75, respectively. The second chapter addresses asymmetric transformations by deprotonation using chiral lithium amides, useful in target-oriented synthesis, and representing one of the most powerful workhorse reactions in organic synthesis.

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This new volume in the venerable Organic Reactions series comprises two chapters written in part by the inventors of the unique and important name reactions discussed in these chapters. The first chapter describes a truly remarkable transformation of carboxylic acid derivatives into heteroatom-substituted cyclopropanes, now known as Kulinkovich Cyclopropanation. The second chapter represents an homage to one of the giants of organic chemistry, Sir Derek H. R. Barton. This chapter covers the radical deoxygenation of secondary alcohols that has become known as the Barton-McCombie Reaction.

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For all volumes: the volumes of Organic Reactions are collections of chapters each devoted to a single reaction or a definitive phase of a reaction, of wide applicability. The authors have had experience with the processes surveyed. The subjects are presented from the preparative viewpoint and particular attention is given to limitations, interfering influences, effects of structure and the selection of experimental techniques. Each chapter includes several detailed procedures illustrating the significant modifications of the method. Each chapter contains tablets that include all the examples of the reaction under consideration that the author has been able to find.

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The 99th volume in this series for organic chemists in academia and industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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The latest volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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Volume 88 represents the tenth single-chapter-volume produced in our 73-year history. Such single-chapter volumes represent definitive treatises on extremely important chemical transformations. The success of the research efforts over the past 20 years forms the basis for the single chapter in this volume namely, Hydroamination of Alkenes by Alexander L. Reznichenko and Kai C. Hultzsch. The authors have compiled an enormous (and growing) literature and distilled it into an extraordinarily useful treatise on all aspects of the hydroamination process.

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The latest volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. Numerous detailed procedures illustrate the significant modifications of each method. Includes tables that contain all possible examples of the reaction under consideration.

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The first chapter describes the manifold ways in which the latent functionality embedded in the humble heterocycle furan can be revealed by various oxidative processes.The second chapter details the fascinating cycloaddition and electrocyclization chemistry of unsaturated ketenes. The third chapter chronicles the development of a remarkable organometallic reaction of unactivated alkenes and alkynes, namely carbozincation.

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The current volume continues the tradition of providing significant and interesting procedures, which should prove worthwhile to many synthetic chemists working in increasingly diverse areas. Following precedent, there is no specific or central theme to this volume.

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The latest volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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The two chapters in Volume 84 describe transition metal catalyzed processes that form carbon-carbon bonds and carbon-oxygen bonds in very interesting and practical ways. The first chapter authored by Christina Moberg describes an important subset of one of the earliest and most important enantioselective carbon-carbon bond forming reactions that employ transition metal complexes, namely molybdenum-catalyzed, asymmetric allylic alkylations. The second chapter authored by Brian W. Michel, Laura D. Steffens, and Matthew S. Sigman deals with one of the oldest examples of transition metal catalyzed oxidation, known as the Wacker process.

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The two chapters in Volume 83 describe reactions that represent two major (and growing) franchises in the Organic Reactions series, namely, transition metal catalyzed cross-coupling reactions and multicomponent reactions. These two processes not only have a rich history in synthetic organic chemistry, but also represent some of the most commonly employed transformations in the modern practice of molecule construction. The first chapter authored by Eiichi Nakamura, Takuji Hatakeyama, Shingo Ito, Kentaro Ishizuka, Laurean Ilies, and Masaharu Nakamura describes one of the most exiting advances in the field of transition metal catalyzed cross-coupling reactions: the use of iron catalysts. The second chapter authored by Stephen G. Pyne and Minyan Tang describes the latest in a long line of multicomponent reactions published in this series: the boronic acid Mannich reaction, sometimes called the Petasis reaction.

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Volume 81 represents the confluence of two rare and important phenomena for chapters in the Organic Reactions series, namely, it is a single-chapter volume, and it contains a name reaction coauthored by the inventor. Of the 261 chapters published thus far, only seven have been of sufficient impact to appear as single-chapter volumes. The single chapter in this volume entitled "The Krapcho Dealkoxycarbonylation Reaction of Esters with a-Electron-Withdrawing Substituents" has been coauthored by A. Paul Krapcho together with Organic Reactions' long-time contributor Engelbert Ciganek. The "Krapcho Decarboxylation," as it is known in common parlance, is an extraordinarily useful alternative to the classical hydrolysis-decarboxylation of esters bearing a-electron-withdrawing substituents. This process replaces the strongly basic or acidic conditions normally required for ester saponification with the neutral cleavage of the ester group by a BAC2 mechanism through the combination of water and a dipolar aprotic solvent at high temperature. However, another popular variant involves the use of inorganic salts such as lithium chloride, sodium iodide, or sodium cyanide in a dipolar aprotic solvent which can open a second mechanistic pathway (dependent upon the ester) through BAL2 cleavage. Drs. Krapcho and Ciganek expertly outline the broad substrate scope of this reaction and identify the preferred conditions for various substrate classes. The 371 pages of tables containing all known examples of this simple but important transformation, together with the 1,908 references cited in this Chapter, are testimony to the synthetic usefulness of the Krapcho reaction.

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Volume 82 describe reactions that involve one of the most common transformations in organic chemistry, namely, the pairwise combination of double bonded functional groups. The importance of this enormous family of reactions is a reflection of the spectacular diversity of precursors and products that can arise from appropriate modulation of reactivity of the partners and especially selection of reagents that dictate the outcome. The first chapter authored by Takeshi Takeda and Akira Tsubouchi describes the combination of carbonyl compounds in the presence of highly reactive, low valent titanium reagents in the classic McMurry reaction. The second chapter concerns the chemistry of highly-reactive, double-bonded functional groups, namely ketenes.

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This volume in the venerable Organic Reactions series contains three chapters focusing on the introduction or the removal of nitrogen from organic compounds. The first chapter features a classic chemical reaction for introducing nitrogen into organic compounds, namely the Schmidt Reaction. The second chapter highlights a less-well-known yet fascinating transformation that introduces nitrogen into organic compounds, The Neber Rearrangement. The third chapter describes an unusual class of reactions that involve the loss of small molecular fragments from a ring, where separate carbon atoms unite to form alkenes.

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The 96th volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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The 94th volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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The 95th volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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The latest volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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The latest volume in this series for organic chemists in industry presents critical discussions of widely used organic reactions or particular phases of a reaction. The material is treated from a preparative viewpoint, with emphasis on limitations, interfering influences, effects of structure and the selection of experimental techniques. The work includes tables that contain all possible examples of the reaction under consideration. Detailed procedures illustrate the significant modifications of each method.

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Volume 85 represents the ninth single chapter volume to be produced in Organic Reactions' 72-year history. The original authors, Drs. Shaughnessy and DeVasher, have compiled an enormous (and growing) literature and distilled it into an extraordinarily useful treatise on all aspects of the copper-catalyzed amination process. Given the myriad types of nitrogen-based nucleophiles and various ligand sets and reaction conditions, the authors have done an outstanding job of identifying the best options for various permutations of donor and acceptor. This comprehensive treatment of so many different options constitutes a dream "field guide" for the perplexed chemist who wants to know how best to approach the formation of a C-N bond in a target structure and whether copper or palladium catalysis is recommended.

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Topics in Stereochemistry, previously edited by "the father of stereochemistry" Ernest L. Eliel, is a longstanding, successful series covering the most important advances in the field. The much-anticipated Volume 25 includes chapters on the following topics: * Stereochemistry of Molecules in Inclusion Crystals * Torsional Motion of Stilbene-type Molecules in Crystals * Supramolecular Networks of Porphyrins * Homo- and Heterochirality in Crystals * Supramolecular Synthesis of 1D Chains and 2D Layers in Hydrogen Bond Networks of Ureas and 2-D Pyrimidinones * Chiral Auxiliaries Powerful for Both Enantioresolution and Determination of Absolutely Stereochemistry by X-Ray Crystallograph * Engineering Stereospecific Reactoins in Crystals: Synthesis of Compounds with Adjacent Stereogenic Quaternary Centers by Photodecarbonylation of Crystalline Ketones * The CH/ Hydrogen Bond: An Important Molecular Force in Controlling the Crystal Conformation of Organic Compounds and Three-Dimensional Structure of Biopolymers * Stereoselective Thermal Solid-State Reactions * Crystal Structures and Functionalities of Platinum (II) Complexes Controlled by Various Intermolecular Interactions

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Allylic boron compounds have gained a prominent position as a truly practical class of synthetic reagents in the past twenty-five years. Their main application as a method for the stereoselective synthesis of homoallylic alcohols by allyl-transfer to carbonyl compounds is essentially unmatched. In this process, a new carbon-carbon bond is formed, and up to two new stereogenic centers are created in a predictably controlled manner. Highly effective and general enantioselective variants are available, with countless applications in the total syntheses of polyacetate and polypropionate natural products. Furthermore, the residual allylic unit can be manipulated through a number of different transformations such as oxidative cleavage, olefin metathesis, hydrometalations, and many others. The discovery of Lewis and Brønsted acid catalyzed manifolds recently, has opened new doors for further development of this important reaction. This book provides an up-to-date, comprehensive survey of the literature of this rich chemistry as it pertains to organic synthesis. Consistent with the goal of Organic Reactions, the content and presentation emphasize the preparative aspects of the reactions, giving considerable attention to the scope and limitations of the individual transformations along with detailed experimental procedures. A tabular survey of all examples of carbonyl allylboration used in organic synthesis is presented in nine tables organized by type of allylic boron reagent with listings within each table according to increasing carbon number of the carbonyl substrates. The literature is covered through December 2010, including a new listing of nearly 200 literature citations that supplement the original coverage of 834 references used in the earlier hard cover version of the chapter. Allylboration of Carbonyl Compounds is intended to be a useful, easily read reference book for all practitioners of synthetic organic chemistry working in academic and industrial laboratories.

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Allylic boron compounds have gained a prominent position as a truly practical class of synthetic reagents in the past twenty-five years. Their main application as a method for the stereoselective synthesis of homoallylic alcohols by allyl-transfer to carbonyl compounds is essentially unmatched. In this process, a new carbon-carbon bond is formed, and up to two new stereogenic centers are created in a predictably controlled manner. Highly effective and general enantioselective variants are available, with countless applications in the total syntheses of polyacetate and polypropionate natural products. Furthermore, the residual allylic unit can be manipulated through a number of different transformations such as oxidative cleavage, olefin metathesis, hydrometalations, and many others. The discovery of Lewis and Brønsted acid catalyzed manifolds recently, has opened new doors for further development of this important reaction. This book provides an up-to-date, comprehensive survey of the literature of this rich chemistry as it pertains to organic synthesis. Consistent with the goal of Organic Reactions, the content and presentation emphasize the preparative aspects of the reactions, giving considerable attention to the scope and limitations of the individual transformations along with detailed experimental procedures. A tabular survey of all examples of carbonyl allylboration used in organic synthesis is presented in nine tables organized by type of allylic boron reagent with listings within each table according to increasing carbon number of the carbonyl substrates. The literature is covered through December 2010, including a new listing of nearly 200 literature citations that supplement the original coverage of 834 references used in the earlier hard cover version of the chapter. Allylboration of Carbonyl Compounds is intended to be a useful, easily read reference book for all practitioners of synthetic organic chemistry working in academic and industrial laboratories.

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