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Author : Kaixu Yuan
Publisher :
ISBN 13 :
Total Pages : 420 pages
Book Rating : 4.:/5 (266 download)
Download or read book Group 10 Transition Metal-catalyzed Carbon-carbon Bond Forming Reactions written by Kaixu Yuan and published by . This book was released on 1990 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tom Tuan Luong
Publisher :
ISBN 13 :
Total Pages : 1092 pages
Book Rating : 4.:/5 (1 download)
Download or read book Development of Transition Metal Catalyzed Carbon-carbon Bond Forming Reactions with Abundant Or Scarce Chemicals written by Tom Tuan Luong and published by . This book was released on 2017 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Masahiro Murakami
Publisher : John Wiley & Sons
ISBN 13 : 352768011X
Total Pages : 292 pages
Book Rating : 4.5/5 (276 download)
Download or read book Cleavage of Carbon-Carbon Single Bonds by Transition Metals written by Masahiro Murakami and published by John Wiley & Sons. This book was released on 2015-09-21 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by leading experts and pioneers in the field, this is the first up-to-date book on this hot topic. The authors provide synthetic chemists with different methods to activate carbon-carbon sigma bonds in organic molecules promoted by transition metal complexes. They explain the basic principles and strategies for carbon-carbon bond cleavage and highlight recently developed synthetic protocols based on this methodology. In so doing, they cover cleavage of C-C bonds in strained molecules, reactions involving elimination of carbon dioxide and ketones, reactions via retroallylation, and cleavage of C-C bonds of ketones and nitriles. The result is an excellent information source for researchers in academia and industry working in the field of synthetic organic chemistry, while equally serving as supplementary reading for advanced courses in organometallic chemistry and catalysis.
Author : Guangbin Dong
Publisher : Springer
ISBN 13 : 364255055X
Total Pages : 265 pages
Book Rating : 4.6/5 (425 download)
Download or read book C-C Bond Activation written by Guangbin Dong and published by Springer. This book was released on 2014-09-18 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students
Author : Venukrishnan Komanduri
Publisher :
ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.:/5 (799 download)
Download or read book Development of Transition-metal Catalyzed/mediated Reductive Carbon-carbon Bond Forming Reactions written by Venukrishnan Komanduri and published by . This book was released on 2009 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Abbas Hassan
Publisher :
ISBN 13 :
Total Pages : 670 pages
Book Rating : 4.:/5 (774 download)
Download or read book Development of New Transition Metal Catalyzed C-C Bond Forming Reactions and Their Application Toward Natural Product Synthesis written by Abbas Hassan and published by . This book was released on 2011 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Michael J. Krische research group we are developing new transition metal catalyzed Carbon-Carbon (C-C) forming reactions focusing on atom economy and byproduct free, environmental friendly approaches. We have developed a broad family of C-C bond forming hydrogenations with relative and absolute stereocontrol which provide an alternative to stoichiometric organometallic reagents in certain carbonyl and imine additions. Inspiring from the group work my goal was to develop new reactions, extend the scope of our group chemistry and their application towards synthesis of biologically active natural products. I have been part of enantioselective Rh catalyzed Aldol reaction of vinyl ketones to different aldehydes. Also, we have found that iridium catalyzed transfer hydrogenation of allylic acetates in the presence of aldehydes or alcohols results in highly enantioselective carbonyl allylation under the conditions of transfer hydrogenative. Based on this reactivity a concise enantio- and diastereoselective synthesis of 1,3-polyols was achieved via iterative chain elongation and bidirectional iterative asymmetric allylation was performed, which enables the rapid assembly of 1,3-polyol substructures with exceptional levels of stereocontrol. The utility of this approach stems from the ability to avoid the use of chirally modified allylmetal reagents, which require multistep preparation, and the ability to perform chain elongation directly from the alcohol oxidation level. This approach was utilized for the total synthesis of (+)-Roxaticin from 1,3-propanediol in 20 longest linear steps and a total number of 29 manipulations. Further, advancements were made in iridium catalyzed C-C bond formation under transfer hydrogenation. While methallyl acetate does not serve as an efficient allyl donor, the use of more reactive leaving group in methallyl chloride compensate for the shorter lifetime of the more highly substituted olefin [pi]-complex. Based on this insight into the requirements of the catalytic process, highly enantioselective Grignard-Nozaki-Hiyama methallylation is achieved from the alcohol or aldehyde oxidation levels. Also, a catalytic method for enantioselective vinylogous Reformatsky- type aldol addition was developed in which asymmetric carbonyl addition occurs with equal facility from the alcohol or aldehyde oxidation level. Good to excellent levels of regioselectivity and uniformly high levels of enantioselectivity were observed across a range of alcohols and aldehydes.
Author : Ming-yu Ngai
Publisher :
ISBN 13 :
Total Pages : 652 pages
Book Rating : 4.:/5 (355 download)
Download or read book Transition Metal-catalyzed Reductive C-C Bond Formation Under Hydrogenation and Transfer Hydrogenation Conditions written by Ming-yu Ngai and published by . This book was released on 2008 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon-carbon bond forming reactions are vital to the synthesis of natural products and pharmaceuticals. In 2003, the 200 best selling prescription drugs reported in Med Ad News are all organic compounds. Synthesizing these compounds involves many carbon-carbon bond forming processes, which are not trivial and typically generate large amounts of waste byproducts. Thus, development of an atom economical and environmentally benign carbon-carbon bond forming methodology is highly desirable. Hydrogenation is one of the most powerful catalytic reactions and has been utilized extensively in industry. Although carbon-carbon bond forming reactions under hydrogenation conditions, such as, alkene hydroformylation and the Fischer-Tropsch reaction are known, they are limited to the coupling of unsaturated hydrocarbons to carbon monoxide. Recently, a breakthrough was made by the Krische group, who demonstrated that catalytic hydrogenative C-C bond forming reactions can be extended to the coupling partners other than carbon monoxide. This discovery has led to the development of a new class of carbon-carbon bond forming reactions. Herein, an overview of transition metal-catalyzed reductive couplings of [pi]-unsaturated systems employing various external reductants is summarized in Chapter 1. Chapters 2-4 describe a series of rhodium- and iridium-catalyzed asymmetric hydrogenative couplings of various alkynes to a wide range of imines and carbonyl compounds. These byproduct-free transformations provide a variety of optically enriched allylic amines and allylic alcohols, which are found in numerous natural products, and are used as versatile precursors for the synthesis of many biologically active compounds. Transfer hydrogenation represents another important class of reactions in organic chemistry. This process employs hydrogen sources other than gaseous dihydrogen, such as isopropanol. The Krische group succeeded in developing a new family of transfer hydrogenative carbon-carbon bond formation reactions. Chapter 5 presents two novel ruthenium- and iridium-catalyzed transfer hydrogenative carbonyl allylation reactions. The catalytic system employing iridium complexes enables highly enantioselective carbonyl allylation from both the alcohol and aldehyde oxidation level. These systems define a departure from the use of preformed organometallic reagents in carbonyl additions that transcends the boundaries of oxidation level.
Author : Jason Robert Zbieg
Publisher :
ISBN 13 :
Total Pages : 934 pages
Book Rating : 4.:/5 (798 download)
Download or read book Controlling Selectivity in Novel Transition Metal Catalyzed Carbon-carbon Bond Forming Hydrogenations written by Jason Robert Zbieg and published by . This book was released on 2012 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of my graduate research in the Krische group has been the development of catalytic carbon-carbon bond forming reactions with an emphasis on controlling diastereo- and enatio-selectivity in transfer hydrogenative couplings. The broad goal of our research program has been the development and implementation of efficient green methods for carbonyl addition employing [pi]-unsaturates as surrogates to preformed organometallic reagents, thus enabling byproduct free variants of traditional carbanion chemistry. This dissertation shows the new reactions that I have developed toward this goal. These reactions includes new metal catalyzed approaches for carbonyl crotylation, aminoallylation, and vinylogous reformatsky aldol reactions.
Author : Ernest Byron Wysong
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (437 download)
Download or read book Investigations of Group IVA Transition Metal Mediated Carbon-carbon Bond Forming Reactions written by Ernest Byron Wysong and published by . This book was released on 1990 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wandi Zhang
Publisher :
ISBN 13 :
Total Pages : 1316 pages
Book Rating : 4.:/5 (11 download)
Download or read book Transition-metal Catalyzed Redox Triggered C-C Bond Forming Reactions Via Carbonyl Addition written by Wandi Zhang and published by . This book was released on 2019 with total page 1316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chenjie Wang
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (551 download)
Download or read book New Intramolecular Carbon-carbon Bond Forming Reactions in Transition Metal Complexes written by Chenjie Wang and published by . This book was released on 1993 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Aiwen Lei
Publisher : John Wiley & Sons
ISBN 13 : 3527336885
Total Pages : 243 pages
Book Rating : 4.5/5 (273 download)
Download or read book Oxidative Cross-Coupling Reactions written by Aiwen Lei and published by John Wiley & Sons. This book was released on 2016-11-14 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first handbook on this emerging field provides a comprehensive overview of transition metal-catalyzed coupling reactions in the presence of an oxidant. Following an introduction to the general concept and mechanism of this reaction class, the team of authors presents chapters on C-C cross-coupling reactions using organometallic partners, C-Heteroatom bond forming reactions via oxidative couplings, and C-H couplings via C-H activation. The text also covers such groundbreaking topics as recent achievements in the fields of C-C and C-X bond formation reactions as well as C-H activation involving oxidative couplings. With its novel and concise approach towards important building blocks in organic chemistry and its focus on synthetic applications, this handbook is of great interest to all synthetic chemists in academia and industry alike.
Author : François Diederich
Publisher : John Wiley & Sons
ISBN 13 : 3527612203
Total Pages : 540 pages
Book Rating : 4.5/5 (276 download)
Download or read book Metal-catalyzed Cross-coupling Reactions written by François Diederich and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon-carbon bond forming reactions are arguably the most important processes in chemistry, as they represent key steps in the building of complex molecules from simple precursors. Among these reactions, metal-catalyzed cross-coupling reactions are extensively employed in a wide range of areas of preparative organic chemistry, ranging from the synthesis of complex natural products, to supramolecular chemistry, and materials science. In this work, a dozen internationally renowned experts and leaders in the field bring the reader up to date by documenting and critically analyzing current developments and uses of metal-catalyzed cross-coupling reactions. A particularly attractive and useful feature, that enhances the practical value of this monograph, is the inclusion of key synthetic protocols, in experimental format, chosen for broad utility and application. This practice-oriented book can offer the practitioner short cuts to ensure they remain up-to-date with the latest developments.
Author : Joffrey Vrijdag
Publisher :
ISBN 13 : 9781536176957
Total Pages : 268 pages
Book Rating : 4.1/5 (769 download)
Download or read book Cross-coupling Reactions written by Joffrey Vrijdag and published by . This book was released on 2020 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Cross-Coupling Reactions: An Overview opens with an overview of the fundamentals and applications of the young and fast developing area of transition metal catalyzed/mediated oxidative (dehydrogenative) C-H/C-H coupling reactions between two (hetero)arenes. Continuing, the authors highlight the recent advances regarding the ligand supported transition metal-catalyzed domino (cascade) or one-pot syntheses of various heterocycles involving cross-coupling reactions. The recent advances in Cu catalyzed tandem reactions for heterocycle synthesis are also addressed. Cu metal chemistry has garnered attention as a potential alternative to precious transition metals, being cheaper, more sustainable and more easily available. A comprehensive account of research on green chemical routes is provided, involving various palladium metal-based catalysts utilized in facilitating cross-coupling reaction in aqueous media. Reported decarboxylative cross-coupling reactions are discussed along with suitable examples, focusing on their mechanism of action"--
Author : Nai-Wen Tseng
Publisher :
ISBN 13 : 9780494611197
Total Pages : 0 pages
Book Rating : 4.6/5 (111 download)
Download or read book Transition Metal-catalyzed Carbon-carbon/carbon-heteroatom Bond Formation Reactions Utilizing Strained Ring Systems written by Nai-Wen Tseng and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on the development of carbon-carbon/carbon-heteroatom bond forming reactions using strained ring systems under transition metal catalysis. The first chapter describes the use of bifunctional organoboron reagents with a rhodium catalyst to synthesize carbocycles through a cascade sequence. The reaction of norbornene derivatives gives vinylcyclopropane and cyclopentene products in moderate to good yield. The mechanistic proposal and insights into the reaction mechanism are presented. Preliminary results from studies toward an enantioselective sequential addition/cyclization process are described. The methodology is subsequently applied in the synthesis of a variety of polycyclic heteroaromatics using bifunctional heteroaryl boronate esters. The second chapter describes studies toward the formation of carbon-heteroatom bonds using cyclopropane derivatives. Under a recently developed Pd(OAc) 2/PhI(OAc)2 catalytic system, methylenecyclopropanes are isomerized to substituted pyridines via a sequential fragmentation/cyclization process. Under same reaction conditions, allylic acetate products are obtained from the isomerization of cyclopropanes through a similar process.
Author :
Publisher : Elsevier
ISBN 13 : 0443140049
Total Pages : 270 pages
Book Rating : 4.4/5 (431 download)
Download or read book Earth-Abundant Transition Metal Catalyzed Reactions written by and published by Elsevier. This book was released on 2024-09-09 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earth-Abundant Transition Metal Catalyzed Reactions, Volume 74 in the Advances in Catalysis series, highlights new advances in the field, with this new volume presenting interesting chapters. Each chapter is written by an international board of authors. Chapters in this new release include in Chiral Iron Complexes for Asymmetric Catalysis, Recent advances in Ni-catalyzed Functionalization of Strong C-O and C-H Bonds, Low-valent Molecular Cobalt Complexes for Reductive Chemistry, Iron-catalyzed group-transfer reactions with hypervalent iodine reagents, and Iron Porphyrins for Mediating Atom Efficient C–C Bond Formations. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in Advances in Catalysis serials - Updated release includes the latest information in the field
Author : Te-Yu Chen (Ph. D.)
Publisher :
ISBN 13 :
Total Pages : 1236 pages
Book Rating : 4.:/5 (96 download)
Download or read book Transition Metal-catalyzed Transfer Hydrogenative C-C Bond Formation written by Te-Yu Chen (Ph. D.) and published by . This book was released on 2016 with total page 1236 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the more formidable challenges of organic synthesis remains the efficient construction of C-C bonds. A generally used strategy for carrying out such transformations involves the addition of carbon-based nucleophiles to carbonyl and/or imine compounds. However, the forementioned approaches to C-C bond formation suffer various drawbacks; for instance, the use of stoichiometric pre-formed organometallic reagents and in the meanwhile generates stoichiometric organometallic byproducts. In order to bypass nucleophile pre-activation and byproduct formation, multiple efficient methods for carbonyl and/or imine additions via in situ formation of organometallic nucleophiles from [greek letter pi]-unsaturates have been developed in the Krische group. The research presented in this dissertation describes our advances in transition metal-catalyzed C-C bond forming reactions mediated through transfer hydrogenative process, including regioselective hydrohydroxyalkylation and hydroaminoalkylation. Additionally, studies toward the total synthesis of bryostatin analogue are described.
