Development of Transition Metal Catalyzed Carbon-carbon Bond Forming Reactions with Abundant Or Scarce Chemicals

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ISBN 13 :
Total Pages : 1092 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Development of Transition Metal Catalyzed Carbon-carbon Bond Forming Reactions with Abundant Or Scarce Chemicals by : Tom Tuan Luong

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:

Development of Transition-metal Catalyzed/mediated Reductive Carbon-carbon Bond Forming Reactions

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ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Development of Transition-metal Catalyzed/mediated Reductive Carbon-carbon Bond Forming Reactions by : Venukrishnan Komanduri

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:

Earth-Abundant Transition Metal Catalyzed Reactions

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Publisher : Elsevier
ISBN 13 : 0443140049
Total Pages : 270 pages
Book Rating : 4.4/5 (431 download)

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Book Synopsis Earth-Abundant Transition Metal Catalyzed Reactions by :

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

Cleavage of Carbon-Carbon Single Bonds by Transition Metals

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Publisher : John Wiley & Sons
ISBN 13 : 352768011X
Total Pages : 292 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Cleavage of Carbon-Carbon Single Bonds by Transition Metals by : Masahiro Murakami

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.

Development of Neutral Redox Carbon-carbon Bond Forming Reactions Via Transition Metal-catalyzed Transfer Hydrogenation

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ISBN 13 :
Total Pages : 1316 pages
Book Rating : 4.:/5 (12 download)

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Book Synopsis Development of Neutral Redox Carbon-carbon Bond Forming Reactions Via Transition Metal-catalyzed Transfer Hydrogenation by : Khoa Dang Nguyen (Ph. D.)

Download or read book Development of Neutral Redox Carbon-carbon Bond Forming Reactions Via Transition Metal-catalyzed Transfer Hydrogenation written by Khoa Dang Nguyen (Ph. D.) and published by . This book was released on 2017 with total page 1316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since C-C bonds form the backbone of every organic molecule and reside at the heart of chemical science, the development of new efficient methods for promoting C-C bond formation is of great significance. Inspired and expanded from traditional Grignard reactions, the work presented in this dissertation focuses on metal catalyzed neutral redox-triggered carbonyl addition via transfer hydrogenation. Advancing the native reducing capability of alcohols, employment of catalytic transition metals enables the formation of nucleophile-electrophile pairs in situ, en route to the products of formal alcohol C-H functionalization. These redox-triggered reactions circumvent the stoichiometric metallated byproduct waste and streamline the construction of complex molecules from simple and/or readily available feedstocks. The research reported herein discloses new developed methodologies of ruthenium and iridium catalyzed coupling reactions of primary and secondary alcohols with various pi-unsaturates. These studies contribute to the growing body of redox-triggered alcohol C-C couplings - new carbonyl addition chemistry that extends beyond the use of premetalated reagents.

Group 10 Transition Metal-catalyzed Carbon-carbon Bond Forming Reactions

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ISBN 13 :
Total Pages : 420 pages
Book Rating : 4.:/5 (266 download)

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Book Synopsis Group 10 Transition Metal-catalyzed Carbon-carbon Bond Forming Reactions by : Kaixu Yuan

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:

Development of New Transition Metal Catalyzed C-C Bond Forming Reactions and Their Application Toward Natural Product Synthesis

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ISBN 13 :
Total Pages : 670 pages
Book Rating : 4.:/5 (774 download)

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Book Synopsis Development of New Transition Metal Catalyzed C-C Bond Forming Reactions and Their Application Toward Natural Product Synthesis by : Abbas Hassan

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.

Transition Metal Catalyzed C-C Bond Formation Under Transfer Hydrogenation Conditions

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ISBN 13 :
Total Pages : 902 pages
Book Rating : 4.:/5 (859 download)

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Book Synopsis Transition Metal Catalyzed C-C Bond Formation Under Transfer Hydrogenation Conditions by : Joyce Chi Ching Leung

Download or read book Transition Metal Catalyzed C-C Bond Formation Under Transfer Hydrogenation Conditions written by Joyce Chi Ching Leung and published by . This book was released on 2013 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon-carbon bond forming reactions are fundamental transformations for constructing structurally complex organic building blocks, especially in the realm of natural products synthesis. Classical protocols for forming a C-C bond typically require the use of stoichiometrically preformed organometallic reagents, constituting a major drawback for organic synthesis on process scale. Since the emergence of transition metal catalysis in hydrogenation and hydrogenative C-C coupling reactions, atom and step economy have become important considerations in the development of sustainable methods. In the Krische laboratory, our goal is to utilize abundant, renewable feedstocks, so that the reactions can proceed in an efficient and atom-economical manner. Our research focuses on developing new C-C bond forming protocols that transcend the use of stoichiometric, preformed organometallic reagents, in which [pi]-unsaturates can be employed as surrogates to discrete premetallated reagents. Under transition metal catalyzed transfer hydrogenation conditions, alcohols can engage in C-C coupling, avoiding unnecessary redox manipulations prior to carbonyl addition. Stereoselective variants of these reactions are also under extensive investigation to effect stereo-induction by way of chiral motifs found in ligands and counterions. The research presented in this dissertation represents the development of a new class of C-C bond forming transformations useful for constructing synthetic challenging molecules. Development of transfer hydrogenative C-C bond forming reactions in the form of carbonyl additions such as carbonyl allylation, carbonyl propargylation, carbonyl vinylation etc. are discussed in detail. Additionally, these methods avoid the use of stoichiometric chiral allenylmetal, propargylmetal or vinylmetal reagents, respectively, accessing diastereo- and enantioenriched products of carbonyl additions in the absence of stoichiometric organometallic byproducts. By exploiting the atom-economical transfer hydrogenative carbonyl addition protocols using ruthenium and iridium, preparations of important structural motifs that are abundant in natural products, such as allylic alcohols, homoallylic alcohols and homopropargylic alcohols, become more feasible and accessible.

New Reactivity and Selectivity in Transition Metal-catalyzed C-C and C-N Bond Forming Processes

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ISBN 13 :
Total Pages : 881 pages
Book Rating : 4.:/5 (94 download)

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Book Synopsis New Reactivity and Selectivity in Transition Metal-catalyzed C-C and C-N Bond Forming Processes by :

Download or read book New Reactivity and Selectivity in Transition Metal-catalyzed C-C and C-N Bond Forming Processes written by and published by . This book was released on 2015 with total page 881 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I. Palladium-Catalyzed Carbon-Carbon Bond Forming Cross-Couplings Chapter 1. Ligand-Controlled Palladium-Catalyzed Regiodivergent Suzuki-Miyaura Cross-Coupling of Allylboronates and Aryl Halides An orthogonal set of catalyst systems based on the use of two biarylphosphine ligands has been developed for the Suzuki-Miyaura coupling of 3,3-disubstituted and 3-monosubstituted allylboronates with (hetero)aryl halides. These methods allow for the regiodivergent preparation of either the ct- or the [gamma]-isomeric coupling product with high levels of site selectivity using a common allylboron building block. Preliminary investigations have demonstrated the feasibility of an enantioselective variant for the [gamma]-selective cross-coupling using chiral monodentate biarylphosphine ligands. Chapter 2. Palladium-Catalyzed Completely Linear-Selective Negishi Coupling of 3,3-Disubstituted Organozinc Reagents with Aryl and Vinyl Electrophiles A palladium-catalyzed general and completely linear-selective Negishi coupling of 3,3- disubstituted allyl organozinc reagents with (hetero)aryl and vinyl electrophiles has been developed. This method provided an effective means for accessing highly functionalized aromatic and heteroaromatic compounds bearing prenyl-type side chains. The utility of the current protocol was further illustrated in the concise synthesis of the anti-HIV natural product siamenol. Chapter 3. Palladium-Catalyzed Highly Selective Negishi Cross-Coupling of Secondary Alkylzinc Reagents with Aryl and Heteroaryl Halides The palladium-catalyzed Negishi cross-coupling of secondary alkylzinc reagents and heteroaryl halides with high levels of regioisomeric retention has been described. The development of a series of biarylphosphine ligands has led to the identification of an improved catalyst for the coupling of electron-deficient heterocyclic substrates. Preparation and characterization of oxidative addition complex (L)Pd(Ar)(Br) provided insight into the unique reactivity of palladium catalysts based on CPhos-type biarylphosphine ligands in facilitating challenging reductive elimination processes. Chapter 4. Mechanistic Studies on the Aryl-Trifluoromethyl Reductive Elimination from Pd(II) Complexes Based on Biarylphosphine Ligands A series of monoligated (L)Pd(Ar)(CF3) (L = dialkyl biarylphosphine) have been prepared and studied in an effort to shed light on the mechanism of the aryl-trifluoromethyl reductive elimination from these systems. Combined experimental and computational investigations revealed unique reactivity and binding modes of (L)Pd(Ar)(CF3) complexes derived from BrettPhos-type biarylphosphines. In contrast to a variety of C-C and C-heteroatom bond forming reductive eliminations, kinetic measurements showed this Ar-CF3 reductive elimination is largely insensitive to the electronic nature of the to-be-eliminated aryl substituent. Furthermore, the aryl group serves as the nucleophilic coupling partner in this reductive elimination process. The structure-reactivity relationship of biarylphosphine ligands was also investigated, uncovering distinct roles of the ipso-arene and alkoxy interactions in affecting these reductive elimination reactions. Part II. Copper-Catalyzed Carbon-Carbon and Carbon-Nitrogen Bond Formation via Olefin Functionalization Chapter 5. Copper-Catalyzed ortho C-H Cyanation of Vinylarenes A copper-catalyzed regioselective ortho C-H cyanation of vinylarenes has been developed. This method provides an effective means for the selective functionalization of vinylarene derivatives. A copper-catalyzed cyanative dearomatization mechanism is proposed to account for the regiochemical course of this reaction. This mechanism has been validated through density functional theory calculations. Computational studies revealed that the high level of ortho selectivity in the electrophilic cyanation event originates from a unique six-membered transition state that minimizes unfavorable steric repulsions. Chapter 6. Regio- and Stereospecific 1,3-Allyl Group Transfer Triggered by a Copper-Catalyzed Borylation/ortho-Cyanation Cascade A copper-catalyzed borylation/cyanation/allyl group transfer cascade has been developed. This process features an unconventional copper-catalyzed electrophilic dearomatization followed by the subsequent regio- and stereospecific 1,3-transposition of the allyl fragment enabled by the aromatization-driven Cope rearrangement. This method provides an effective means for the construction of adjacent tertiary and quaternary stereocenters with high levels of stereochemical purity. Chapter 7. Copper-Catalyzed Asymmetric Hydroamination of Unactivated Internal Olefins: an Effective Means to Access Highly Enantioenriched Aliphatic Amines Catalytic assembly of enantiopure aliphatic amines from abundant and readily available precursors has long been recognized as a paramount challenge in synthetic chemistry. We describe a mild and general copper-catalyzed hydroamination that effectively converts unactivated internal olefins-an important yet unexploited class of abundant feedstock chemicals-into highly enantioenriched [alpha]-branched amines (>/= 96% ee) featuring two minimally differentiated aliphatic substituents. This method provides a powerful means to access a broad range of advanced, highly functionalized enantioenriched amines of interest in pharmaceutical research and other areas.

Development of New Transition Metal-catalyzed Carbon-fluorine, Carbon-nitrogen, and Carbon-carbon Bond Forming Processes

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ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (15 download)

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Book Synopsis Development of New Transition Metal-catalyzed Carbon-fluorine, Carbon-nitrogen, and Carbon-carbon Bond Forming Processes by : Yuxuan Ye (Ph. D.)

Download or read book Development of New Transition Metal-catalyzed Carbon-fluorine, Carbon-nitrogen, and Carbon-carbon Bond Forming Processes written by Yuxuan Ye (Ph. D.) and published by . This book was released on 2018 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1. Palladium-Catalyzed Fluorination of Cyclic Vinyl Triflates: Dramatic Effect of TESCF3 as an Additive A method for the synthesis of cyclic vinyl fluorides with high levels of regiochemical fidelity has been achieved by Pd-catalysis employing a new biarylphosphine ligand and TESCF3 as a crucial additive. Five, six, and seven-membered vinyl triflate substrates, as well as a few acyclic substrates undergo the transformation successfully. The intriguing "TESCF3 effect" provided a new tool for addressing the problem of the formation of regioisomers in Pd-catalyzed fluorination reactions. Chapter 2. Mechanistic Studies on Pd-Catalyzed Fluorination of Cyclic Vinyl Triflates: Evidence for in situ Ligand Modification by TESC3 as an additive. A detailed mechanistic hypothesis for the Pd-catalyzed fluorination of cyclic vinyl triflates, and the unusual effect of TESCF3 as an additive has been developed by combined experimental and computational studies. The preference of conducting [beta]-hydrogen elimination rather than reductive elimination from the trans-LPd(vinyl)F complex, which is generated predominantly due to the trans-effect, caused the poor regioselectivity of the fluorination reaction under TESCF3-free conditions. An in situ ligand modification by trifluoromethyl anion, leading to the generation of the cis-LPd(vinyl)F complex which prefers reductive elimination rather than Phydrogen elimination, is proposed to be responsible for the improved regioselectivity of the fluorination reaction when TESCF3 was used as an additive. Chapter 3. CuH-Catalyzed Enantioselective Alkylation of Indoles with Ligand-Controlled Regiodivergence A method for the enantioselective synthesis of either NI- and C3-chiral indoles by CuH-catalysis, depending on the choice of ligand, was developed. In contrast to conventional indole functionalization in which indoles are used as nucleophiles, hydroxyindole derivatives are employed as electrophiles in this method. DFT calculations indicated that the extent to which the Cu-P bonds of the alkylcopper intermediate distort, determines the regioselectivity of the reaction.

New Carbon–Carbon Coupling Reactions Based on Decarboxylation and Iron-Catalyzed C–H Activation

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Publisher : Springer
ISBN 13 : 9811031932
Total Pages : 225 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis New Carbon–Carbon Coupling Reactions Based on Decarboxylation and Iron-Catalyzed C–H Activation by : Rui Shang

Download or read book New Carbon–Carbon Coupling Reactions Based on Decarboxylation and Iron-Catalyzed C–H Activation written by Rui Shang and published by Springer. This book was released on 2016-12-09 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the latest developments in new catalytic C–C bond formation methods using easily accessible carboxylate salts through catalytic decarboxylation with good atom economy, and employing the sustainable element iron as the catalyst to directly activate C–H bonds with high step efficiency. In this regard, it explores a mechanistic understanding of the newly discovered decarboxylative couplings and the catalytic reactivity of the iron catalyst with the help of density functional theory calculation. The thesis is divided into two parts, the first of which focuses on the development of a series of previously unexplored, inexpensive carboxylate salts as useful building blocks for the formation of various C–C bonds to access valuable chemicals. In turn, the second part is devoted to several new C–C bond formation methodologies using the most ubiquitous transition metal, iron, as a catalyst, and using the ubiquitous C–H bond as the coupling partner.

Controlling Selectivity in Novel Transition Metal Catalyzed Carbon-carbon Bond Forming Hydrogenations

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ISBN 13 :
Total Pages : 934 pages
Book Rating : 4.:/5 (798 download)

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Book Synopsis Controlling Selectivity in Novel Transition Metal Catalyzed Carbon-carbon Bond Forming Hydrogenations by : Jason Robert Zbieg

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.

Metal-catalyzed Cross-coupling Reactions

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Publisher : Wiley-VCH
ISBN 13 :
Total Pages : 552 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Metal-catalyzed Cross-coupling Reactions by : François Diederich

Download or read book Metal-catalyzed Cross-coupling Reactions written by François Diederich and published by Wiley-VCH. This book was released on 1998-02-11 with total page 552 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.

Transition Metal-catalyzed Reductive C-C Bond Formation Under Hydrogenation and Transfer Hydrogenation Conditions

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ISBN 13 :
Total Pages : 652 pages
Book Rating : 4.:/5 (355 download)

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Book Synopsis Transition Metal-catalyzed Reductive C-C Bond Formation Under Hydrogenation and Transfer Hydrogenation Conditions by : Ming-yu Ngai

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.

Metal Catalyzed Reductive C-C Bond Formation

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Publisher : Springer Science & Business Media
ISBN 13 : 3540728791
Total Pages : 272 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Metal Catalyzed Reductive C-C Bond Formation by : Michael J Krische

Download or read book Metal Catalyzed Reductive C-C Bond Formation written by Michael J Krische and published by Springer Science & Business Media. This book was released on 2007-10-05 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts

Transition Metal Catalyzed Oxidative Cross-Coupling Reactions

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Publisher : Springer
ISBN 13 : 3662581043
Total Pages : 198 pages
Book Rating : 4.6/5 (625 download)

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Book Synopsis Transition Metal Catalyzed Oxidative Cross-Coupling Reactions by : Aiwen Lei

Download or read book Transition Metal Catalyzed Oxidative Cross-Coupling Reactions written by Aiwen Lei and published by Springer. This book was released on 2018-12-14 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive text covering the research and development trends in the booming field of transition metal catalyzed oxidative cross-coupling reactions. Oxidative cross-coupling reaction is a new method to forming chemical bonds besides the traditional cross-coupling reactions. This book provides the answers to how this coupling reaction occurs and what its advantages are. The palladium, copper and iron catalyzed oxidative cross-coupling reactions as the main focuses of interest are described in detail. The oxidative cross-coupling reactions catalyzed by other metals and transition-metal-free oxidative coupling reactions are also introduced.This book provides a useful reference source for researchers and graduates in the field of transition metal catalyzed coupling reactions. It is also valuable to researchers working in pharmaceutical companies, fine organic chemical companies, and etc.

Heterocycles from Transition Metal Catalysis

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Publisher : Springer Science & Business Media
ISBN 13 : 1402036922
Total Pages : 209 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Heterocycles from Transition Metal Catalysis by : András Kotschy

Download or read book Heterocycles from Transition Metal Catalysis written by András Kotschy and published by Springer Science & Business Media. This book was released on 2005-12-28 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Heterocycles from Transition Metal Catalysis: Formation and Functionalization" provides a concise summary of the prominent role of late transition metal (palladium, nickel, copper) catalysed processes in the synthesis and functionalization of heterocyclic systems. It gives an introduction to catalytic transformations, an overview of the most important reaction types, and presents synthetically useful catalytic processes classified by the target system and the type of transformation. The book provides a representative selection of transition metal catalysed reactions transformations that are relevant in heterocyclic chemistry. In this way, the authors present a useful resource for members of the academic community looking for a textbook as well as industrial chemists in search of a reference book. This book will be an invaluable resource for synthetic chemists, medicinal chemists, and those more generally interested in applied catalysis.