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Cycloaddition Reactions of Heterocumulenes

Cycloaddition Reactions of Heterocumulenes
Author: Henri Ulrich
Publisher: Elsevier
Total Pages: 375
Release: 2012-12-02
Genre: Science
ISBN: 0323162762
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Cycloaddition Reactions of Heterocumulenes reviews cycloaddition reactions, particularly on hetercocumulenes having "four-electron" bonds. This book discusses the chemical relationship among the various classes of heterocumulenes, including their chemical reactivity which ranges from highly reactive species to nearly inert compounds. This text also investigates the nucleophilic reactions of ketenes and isocyanates with suitable substrates, and if possible, correlates available data with the reactivity of these species in cycloaddition reactions. This book also investigates the cycloaddition reactions of carbon suboxide and other aspects of its chemistry due to the presence of many other interrelated reactions. The synthetic organic chemist should also investigate the application of isocyanate reactions associated with the cumulative double bonds. This text investigates carbodiimides as useful reagents for peptide synthesis, and notes that the stability of carbodiimides increases significantly with sterical hindrance around the cumulative double bond system. This book discusses three compounds that have a central electrophilic carbon atom, namely, carbon dioxide, carbonyl sulfide, and carbon disulfide. The book also describes the cycloaddition reactions of sulfenes, of N-sulfinylamines, of N-sulfinylsulfonamides, and of sulfurdiimides. This book can prove useful for researchers, technicians, and scientists whose works involve organic chemistry, analytical chemistry, and other related fields of chemistry.

Palladium-catalyzed Cycloaddition Reaction of 2-vinyloxiranes, 2-vinyloxetanes, O-iodophenols and O-iodoanilines with Heterocumulenes, the Efficient Methods for the Preparation of Heterocyclic Compounds

Palladium-catalyzed Cycloaddition Reaction of 2-vinyloxiranes, 2-vinyloxetanes, O-iodophenols and O-iodoanilines with Heterocumulenes, the Efficient Methods for the Preparation of Heterocyclic Compounds
Author: Chitchamai Larksarp
Publisher:
Total Pages: 0
Release: 2000
Genre: Palladium catalysts
ISBN:
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Palladium(II)-catalyzed Regiospecific and Stereospecific Cycloaddition Reactions of Aziridines and Azetidines with Heterocumulenes

Palladium(II)-catalyzed Regiospecific and Stereospecific Cycloaddition Reactions of Aziridines and Azetidines with Heterocumulenes
Author: Jin-Ook Baeg
Publisher:
Total Pages: 428
Release: 1994
Genre: Palladium catalysts
ISBN:
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On the basis of results obtained, including spectroscopic studies and X-ray analysis, a mechanism has been proposed for the cycloaddition reactions of the N-heterocycles with heterocumulenes. A bis(azetidine)palladium complex was isolated and shown to be catalytically active for the reaction of azetidines with heterocumulenes. Numerous heterocyclic compounds have been prepared for the first time, some of them having the potential for pharmacological activity.

Synthetic Applications of 1,3-Dipolar Cycloaddition Chemistry Toward Heterocycles and Natural Products, Volume 59

Synthetic Applications of 1,3-Dipolar Cycloaddition Chemistry Toward Heterocycles and Natural Products, Volume 59
Author: Albert Padwa
Publisher: John Wiley & Sons
Total Pages: 952
Release: 2003-04-14
Genre: Science
ISBN: 0471461369
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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.

Saturated Heterocyclic Chemistry

Saturated Heterocyclic Chemistry
Author: M F Ansell
Publisher: Royal Society of Chemistry
Total Pages: 374
Release: 2007-10-31
Genre: Science
ISBN: 184973271X
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Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. Fro over 90 years The Royal Society of chemistry and its predecessor, the Chemical Society, have been publishing reports charting developments in chemistry, which originally took the form of Annual Reports. However, by 1967 the whole spectrum of chemistry could no longer be contained within one volume and the series Specialist Periodical Reports was born. The Annual Reports themselves still existed but were divided into two, and subsequently three, volumes covering Inorganic, Organic, and Physical Chemistry. For more general coverage of the highlights in chemistry they remain a 'must'. Since that time the SPR series has altered according to the fluctuating degree of activity in various fields of chemistry. Some titles have remained unchanged, while others have altered their emphasis along with their titles; some have been combined under a new name whereas others have had to be discontinued. The current list of Specialist Periodical Reports can be seen on the inside flap of this volume.

Cumulenes in Click Reactions

Cumulenes in Click Reactions
Author: Henri Ulrich
Publisher: John Wiley & Sons
Total Pages: 562
Release: 2009-11-19
Genre: Science
ISBN: 9780470747933
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Cumulenes are organic molecules with two or more cumulative (consecutive) double bonds. Their reactions often proceed at room temperature, with or without a catalyst, and are stereospecific, giving the reaction products in high yields – features characteristic of “click reactions”. Cumulenes in Click Reactions presents a comprehensive list of cumulene systems and their reactions, with an emphasis on their “click-like” nature. The chapters are structured according to the number of carbon atoms in the system, including coverage of: introduction to the chemistry of cumulenes one-carbon cumulenes: sulfines, sulfenes, thiocarbonyl S-imides, thiocarbonyl S-sulfides, and 1-aza-2-azoniaallene salts two-carbon cumulenes: carbon oxides, carbon sulfides, carbon nitrides (isocyanates, isothiocyanates, and carbodiimides), phosphaallenes, and diarsaallenes 1,2-dicarbon cumulenes: ketenes, thioketenes, ketenimines, 1-silaallenes, 1-phosphaallenes, and other metal allenes 1,3-dicarbon cumulenes: thiocarbonyl S-ylides, 2-azaallenium salts, 1-oxa-3-azoniabutatriene salts, 1-thia-3-azoniabutatriene salts, and phosphorous ylides 1,2,3-tricarbon cumulenes: allenes, butatrienes, higher cumulenes and heterobutatrienes noncarbon cumulenes: azides, triazaallenium salts, sulfur oxides, sulfur nitrides, N-sulfinylamines, sulfurdiimides, and dithionitronium cation Cumulenes in Click Reactionsis an essential guide for researchers and advanced students in academia and research working in synthetic organic, inorganic and bioorganic chemistry.