Carbonylation Reactions of [delta]-palladium (II) Complexes and Dienes in the Presence of Palladium (II) Catalysts PDF Download
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Author: Rade R. Marković
Publisher:
ISBN:
Category :
Languages : en
Pages : 382
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![Carbonylation Reactions of [delta]-palladium (II) Complexes and Dienes in the Presence of Palladium (II) Catalysts PDF](https://books.google.com/books/content/images/frontcover/I3QKHAAACAAJ?fife=w80-h100)
Author: Rade R. Marković
Publisher:
ISBN:
Category :
Languages : en
Pages : 382
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Author: P. Henry
Publisher: Springer Science & Business Media
ISBN: 940099446X
Category : Science
Languages : en
Pages : 449
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Book Description
The field of organometallic chemistry has emerged over the last twenty-five years or so to become one of the most important areas of chemistry, and there are no signs of abatement in the intense current interest in the subject, particularly in terms of its proven and potential application in catalytic reactions involving hydrocarbons. The development of the organometallic/ catalysis area has resulted in no small way from many contributions from researchers investigating palladium systems. Even to the well-initiated, there seems a bewildering and diverse variety of organic reactions that are promoted by palladium(II) salts and complexes. Such homogeneous reactions include oxidative and nonoxidative coupling of substrates such as olefins, dienes, acetylenes, and aromatics; and various isomerization, disproportionation, hydrogenation, dehydrogenation, car bonylation and decarbonylation reactions, as well as reactions involving formation of bonds between carbon and halogen, nitrogen, sulfur, and silicon. The books by Peter M. Maitlis - The Organic Chemistry of Palladium, Volumes I, II, Academic Press, 1971 - serve to classify and identify the wide variety of reactions, and access to the vast literature is available through these volumes and more recent reviews, including those of J. Tsuji [Accounts Chem. Res. , 6, 8 (1973); Adv. in Organometal. , 17, 141 (1979)], R. F. Heck [Adv. in Catat. , 26, 323 (1977)], and ones by Henry [Accounts Chem. Res. , 6, 16 (1973); Adv. in Organometal. , 13, 363 (1975)]. F. R. Hartley's book - The Chemistry of Platinum and Palladium, App!. Sci. Pub!.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Richard Vance Lawrence
Publisher:
ISBN:
Category :
Languages : en
Pages : 284
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Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 604
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Author: Árpád Molnár
Publisher: John Wiley & Sons
ISBN: 3527648305
Category : Science
Languages : en
Pages : 531
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Book Description
This handbook and ready reference brings together all significant issues of practical importance in selected topics discussing recent significant achievements for interested readers in one single volume. While covering homogeneous and heterogeneous catalysis, the text is unique in focusing on such important aspects as using different reaction media, microwave techniques or catalyst recycling. It also provides a comprehensive treatment of key issues of modern-day coupling reactions having emerged and matured in recent years and emphasizes those topics that show potential for future development, such as continuous flow systems, water as a reaction medium, and catalyst immobilization, among others. With its inclusion of large-scale applications in the pharmaceutical industry, this will equally be of great interest to industrial chemists. From the contents * Palladium-Catalyzed Cross-Coupling Reactions - A General Introduction * High-turnover Heterogeneous Palladium Catalysts in Coupling Reactions: the Case of Pd Loaded on Dealuminated Y Zeolites Palladium-Catalyzed Coupling Reactions with Magnetically Separable Nanocatalysts * The Use of Ordered Porous Solids as Support Materials in Palladium-Catalyzed Cross-Coupling Reactions * Coupling Reactions Induced by Polymer-Supported Catalysts * Coupling Reactions in Ionic Liquids * Cross-Coupling Reactions in Aqueous Media * Microwave-Assisted Synthesis in C-C and C-Heteroatom Coupling Reactions * Catalyst Recycling in Palladium-Catalyzed Carbon-Carbon Coupling Reactions * Nature of the True Catalytic Species in Carbon-Carbon Coupling Reactions with * Heterogeneous Palladium Precatalysts * Coupling Reactions in Continuous Flow Systems * Large-Scale Applications of Palladium-Catalyzed Couplings in the Pharmaceutical Industry
Author: Leon Francis Hines
Publisher:
ISBN:
Category : Alkenes
Languages : en
Pages : 162
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Author: Ji Yang
Publisher:
ISBN:
Category :
Languages : en
Pages :
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This thesis is mainly concerned with the carbonylative functionalization of unsaturated organic substrates in the presence of homogeneous catalysts. More specifically, oxidative carbonylation of alkynes, alkoxycarbonylation of 1,3-dienes and platinum-catalyzed alkoxycarbonylation of olefins are presented. The resulting esters, maleimides and adipic acid diesters constitute important intermediates for both organic synthesis and chemical industry. Regarding methodology developments, firstly a catalytic oxidative carbonylation reaction with air as a green oxidant was developed.eng
Author: H. M. Asfour
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Gerardo Martin Torres
Publisher:
ISBN:
Category :
Languages : en
Pages :
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"Metal catalyzed carbonylation reactions are heavily exploited in synthetic chemistry. These include not only high volume industrial reactions, but also a plethora of catalytic small molecule syntheses. This thesis will describe our efforts to develop such reactions. In these, palladium catalyzed carbonylations are exploited to build-up reactive products such as acid chlorides or carbonyl-containing 1,3-dipoles. Coupling this with the ability of the products undergo other spontaneous reactions can offer new routes to build up products from combinations of available reagents or be used to expand the scope of carbonylation chemistry. In chapter 2, we describe how the palladium catalyzed carbonylation of aryl iodides in the presence of imines can allow the overall generation of a 1,3-dipole: a Münchnone. A variety of mechanistic studies were performed on this reaction and show that it proceeds via a tandem catalytic process: the first involving the Pd catalyzed coupling of aryl iodides with carbon monoxide and a chloride salt to form an acid chloride, which can react with an imine and then undergo a second spontaneous cyclocarbonylation to afford the product. Coupling their formation with alkyne cycloaddition can be used to develop a novel method to assemble broad families of pyrroles from aryl iodides, imines, carbon monoxide and alkynes. In Chapter 3 we develop a strategy to apply our palladium catalyzed carbonylative synthesis of Münchnones to construct more complex pyrrole structures. In this, the combination of alkyne-tethered imines, aryl iodides, and carbon monoxide generates a Münchnone that can undergo intramolecular 1,3-dipolar cycloaddition to generate polycyclic pyrroles. This approach allows the modular and regioselective synthesis of complex pyrrole structures, and is compatible with less activated alkynes. In addition, we show that this reaction can be used in tandem with the palladium catalyzed Sonogashira functionalization of terminal alkynes with aryl iodides.In Chapter 4 we describe our efforts to take advantage of the ketene-like reactivity of Münchnones to generate [beta]-lactams. This transformation occurs via the palladium catalyzed formation of Münchnones from imines, aryl iodides, and carbon monoxide, followed by a cycloaddition to a second equivalent of imine to afford amide substituted [beta]-lactam products. Moreover, applying the conditions described in Chapter 2 for the synthesis of Münchnones allowed us to construct more diversely substituted [beta]-lactams by reacting the Münchnone with a different imine. Alternatively, the palladium catalyzed carbonylation of imine-tethered aryl iodides leads to the formation of novel spirocyclic [beta]-lactams.The palladium catalyzed synthesis of acid chlorides is a key component to the synthetic approaches to heterocycles presented in Chapters 2-4. However, the specific features that enable the catalyst to mediate the challenging reductive elimination of acid chlorides also inhibit the reverse oxidative addition step. In Chapter 5 we address these limitations by approaching this palladium catalyzed reaction from a different perspective. In this, visible light is used to drive both key steps in palladium catalysis: oxidative addition and reductive elimination. Analogous to other reports, we show that visible light excitation of a Pd complex can drive oxidative addition of a wide variety of aryl and alkyl halides. In addition, we find that visible light can induce a new reaction step the reductive elimination of acid chlorides. The latter occurs via the excitation in this case of the palladium-acyl intermediate. Together, this offers a platform to perform palladium catalyzed carbonylations at ambient temperature, with a wide array of organic halide substrates that have proven to be challenging in traditional palladium catalysis, and form from these acid chloride electrophiles that can allow the use of nucleophiles that are typically incompatible with carbonylations"--
