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The Mechanism Of Carbon Hydrogen Bond Activation With Hard Ligated Rhodium Complexes
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Book Synopsis The Mechanism of Carbon-hydrogen Bond Activation with Hard-ligated Rhodium Complexes by : Chunming Wang
Download or read book The Mechanism of Carbon-hydrogen Bond Activation with Hard-ligated Rhodium Complexes written by Chunming Wang and published by . This book was released on 1994 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis C-H Bond Activation by : Kevin E. Janak
Download or read book C-H Bond Activation written by Kevin E. Janak and published by . This book was released on 2001 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon-hydrogen Bond Activation and Catalytic Hydrocarbon Functionalization with Rhodium Isocyanide Complexes by : Edward T. Hessell
Download or read book Carbon-hydrogen Bond Activation and Catalytic Hydrocarbon Functionalization with Rhodium Isocyanide Complexes written by Edward T. Hessell and published by . This book was released on 1991 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanism of Oxidative Addition of Cyclopentadienyl-rhodium Complexes to Carbon-hydrogen and Carbon-carbon Bonds by : Roy Anthony Periana-Pillai
Download or read book Mechanism of Oxidative Addition of Cyclopentadienyl-rhodium Complexes to Carbon-hydrogen and Carbon-carbon Bonds written by Roy Anthony Periana-Pillai and published by . This book was released on 1986 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intermolecular and Intramolecular Carbon-hydrogen Bond Activation with Pentamethylcyclopentadienyl-rhodium-phosphine Complexes by : Valerie L. Chandler
Download or read book Intermolecular and Intramolecular Carbon-hydrogen Bond Activation with Pentamethylcyclopentadienyl-rhodium-phosphine Complexes written by Valerie L. Chandler and published by . This book was released on 1989 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Mechanism and Thermodynamics of Alkane and Arene Carbon-hydrogen Bond Activation by Pentamethylcyclopentadienyl-rhodium Compounds by : Frank James Feher
Download or read book The Mechanism and Thermodynamics of Alkane and Arene Carbon-hydrogen Bond Activation by Pentamethylcyclopentadienyl-rhodium Compounds written by Frank James Feher and published by . This book was released on 1984 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Investigation of Carbon-hydrogen Bond Activation by a Rhodiumtrispyrazolylborate Complex by : Andrew James Vetter
Download or read book The Investigation of Carbon-hydrogen Bond Activation by a Rhodiumtrispyrazolylborate Complex written by Andrew James Vetter and published by . This book was released on 2005 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical Studies on Intermolecular Versus Intramolecular Carbon-hydrogen Bond Activation in Rhodium, Iridium, and Zirconium Complexes, and on the Ethene to Hydridovinyl Interconversion in Rhodium and Iridium Complexes by : Rogelio Jimenez-Catano
Download or read book Theoretical Studies on Intermolecular Versus Intramolecular Carbon-hydrogen Bond Activation in Rhodium, Iridium, and Zirconium Complexes, and on the Ethene to Hydridovinyl Interconversion in Rhodium and Iridium Complexes written by Rogelio Jimenez-Catano and published by . This book was released on 1995 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rhodium-Catalyzed C-C Bond Formation Via Heteroatom-Directed C-H Bond Activation by :
Download or read book Rhodium-Catalyzed C-C Bond Formation Via Heteroatom-Directed C-H Bond Activation written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Once considered the 'holy grail' of organometallic chemistry, synthetically useful reactions employing C-H bond activation have increasingly been developed and applied to natural product and drug synthesis over the past decade. The ubiquity and relative low cost of hydrocarbons makes C-H bond functionalization an attractive alternative to classical C-C bond forming reactions such as cross-coupling, which require organohalides and organometallic reagents. In addition to providing an atom economical alternative to standard cross - coupling strategies, C-H bond functionalization also reduces the production of toxic by-products, thereby contributing to the growing field of reactions with decreased environmental impact. In the area of C-C bond forming reactions that proceed via a C-H activation mechanism, rhodium catalysts stand out for their functional group tolerance and wide range of synthetic utility. Over the course of the last decade, many Rh-catalyzed methods for heteroatom-directed C-H bond functionalization have been reported and will be the focus of this review. Material appearing in the literature prior to 2001 has been reviewed previously and will only be introduced as background when necessary. The synthesis of complex molecules from relatively simple precursors has long been a goal for many organic chemists. The ability to selectively functionalize a molecule with minimal pre-activation can streamline syntheses and expand the opportunities to explore the utility of complex molecules in areas ranging from the pharmaceutical industry to materials science. Indeed, the issue of selectivity is paramount in the development of all C-H bond functionalization methods. Several groups have developed elegant approaches towards achieving selectivity in molecules that possess many sterically and electronically similar C-H bonds. Many of these approaches are discussed in detail in the accompanying articles in this special issue of Chemical Reviews. One approach that has seen widespread success involves the use of a proximal heteroatom that serves as a directing group for the selective functionalization of a specific C-H bond. In a survey of examples of heteroatom-directed Rh catalysis, two mechanistically distinct reaction pathways are revealed. In one case, the heteroatom acts as a chelator to bind the Rh catalyst, facilitating reactivity at a proximal site. In this case, the formation of a five-membered metallacycle provides a favorable driving force in inducing reactivity at the desired location. In the other case, the heteroatom initially coordinates the Rh catalyst and then acts to stabilize the formation of a metal-carbon bond at a proximal site. A true test of the utility of a synthetic method is in its application to the synthesis of natural products or complex molecules. Several groups have demonstrated the applicability of C-H bond functionalization reactions towards complex molecule synthesis. Target-oriented synthesis provides a platform to test the effectiveness of a method in unique chemical and steric environments. In this respect, Rh-catalyzed methods for C-H bond functionalization stand out, with several syntheses being described in the literature that utilize C-H bond functionalization in a key step. These syntheses are highlighted following the discussion of the method they employ.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2002 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Activation and Functionalization of C-H Bonds by : Karen I. Goldberg
Download or read book Activation and Functionalization of C-H Bonds written by Karen I. Goldberg and published by ACS Symposium. This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Activation and Functionalization of C-H Bonds explores recent developments in the reaction chemistry of solution-phase transition-metal based systems with simple hydrocarbons and with more complex organic molecules. More than 20 internationally leading research groups contributed to this volume, and their chapters cover such topics as fundamental theoretical and mechanistic studies of C-H bond activation by metal complexes, catalytic systems for alkane functionalization, and new applications in synthetic organic chemistry. An introductory chapter offers an overview of stoichiometric and catalytic reactions of C-H bonds with transition metal complexes. The C-H bond is the most widespread linkage in organic chemistry, present in virtually every organic molecule. Unfortunately, C-H bonds are famously resistant to selective chemical transformations. The development of methods for their selective transformations has enormous potential value in fields ranging from the chemistry of fuels (for example, the conversion of methane to methanol) to the synthesis of the most complex organic molecules.
Book Synopsis Selective Carbon(CO)-carbon([alpha] Bond Activation of Ketones by Rhodium Porphyrin Complex and Aldehydic Carbon-hydrogen Bond Activation by Iridium Porphyrin Complex by : Chung Sum Chan
Download or read book Selective Carbon(CO)-carbon([alpha] Bond Activation of Ketones by Rhodium Porphyrin Complex and Aldehydic Carbon-hydrogen Bond Activation by Iridium Porphyrin Complex written by Chung Sum Chan and published by . This book was released on 2013 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research focuses on the bond activation chemistry by rhodium and iridium porphyrin complexes with ketones and aldehyde respectively.
Book Synopsis Centre de recherche de l'Univ. de Paris VIII, Vincennes. Groupe Cultures, idéologies et sociétés des XIXe et XXe siècles by :
Download or read book Centre de recherche de l'Univ. de Paris VIII, Vincennes. Groupe Cultures, idéologies et sociétés des XIXe et XXe siècles written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon Hydrogen Bond Activation of Aldehydes by Rhodium (III) Porphyrins by : Cheuk Man Lau
Download or read book Carbon Hydrogen Bond Activation of Aldehydes by Rhodium (III) Porphyrins written by Cheuk Man Lau and published by . This book was released on 2005 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transition Metal Activation and Functionalization of Carbon-hydrogen Bonds. Progress Report, December 1, 1989--November 30, 1992 by :
Download or read book Transition Metal Activation and Functionalization of Carbon-hydrogen Bonds. Progress Report, December 1, 1989--November 30, 1992 written by and published by . This book was released on 1992 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are investigating the fundamental thermodynamic and kinetic factors that influence carbon-hydrogen bond activation at homogeneous transition metal centers and the conversion of hydrocarbons into functionalized products of potential use to the chemical industry. Advances have been made in both understanding the interactions of hydrocarbons with metals and in the functionalization of hydrocarbons. We have found that RhCl(PR3)2(CNR) complexes can catalyze the insertion of isonitriles into the C-H bonds or arenes upon photolysis. The mechanism of these reactions was found to proceed by way of initial phosphine dissociation, followed by C-H activation and isonitrile insertion. We have also examined reactions of a series of arenes with (C5Me5)Rh(PMe3)PhH and begun to map out the kinetic and thermodynamic preferences for arene coordination. The effects of resonance, specifically the differences in the Hueckel energies of the bound vs free ligand, are now believed to fully control the C-H activation/?2-coordination equilibria. We have begun to examine the reactions of rhodium isonitrile pyrazolylborates for alkane and arene C-H bond activation. A new, labile, carbodiimide precursor has been developed for these studies. We have completed studies of the reactions of (C5Me5)Rh(PMe3)H2 with D2 and PMe3 that indicate that both?5 2!?3 ring slippage and metal to ring hydride migration occur more facilely than thermal reductive elimination of H2. We have examined the reactions of heterocycles with (C5Me5)Rh(PMe3)PhH and found that pyrrole and furan undergo C-H or N-H activation. Thiophene, however, undergoes C-S bond oxidative addition, and the mechanism of activation has been shown to proceed through sulfur coordination prior to C-S insertion.
Book Synopsis Activation of Strong Carbon-hydrogen and Carbon-carbon Bonds in Cationic Complexes of Rhodium Including Effects of Carbon Monoxide by : Michael Montag
Download or read book Activation of Strong Carbon-hydrogen and Carbon-carbon Bonds in Cationic Complexes of Rhodium Including Effects of Carbon Monoxide written by Michael Montag and published by . This book was released on 2008 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Carbon-hydrogen Bond Activation Using Cationic Rhodium and Iridium Catalysts by : 土釜恭直
Download or read book Development of Carbon-hydrogen Bond Activation Using Cationic Rhodium and Iridium Catalysts written by 土釜恭直 and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: