ORGANOMETALIC (2)

Author: MASLLORENS LLINÀS JUDIT.
Year: 2005.
University: GIRONA [www.udg.es].
Place of defense: UNIVERSIDAD DE GIRONA.
Place of preparation: UNIVERSIDAD DE GIRONA.

Author: Pena Piñon Miguel Angel.
Year: 2005.
University: A CORUÑA [www.udc.es].
Place of defense: Facultad de Ciencias.
Place of preparation: Facultad de Ciencias.

Summary: In this report, have developed new applications of organometallic Indianness (III) at low cross coupling reactions of palladium catalysis. The efficiency and verstailidad of organometallic compounds of Indian (III) have helped to carry out cross-coupling reactions of multiple, formation of several similar carbon-carbon links, a sort aromatic polihalogenada, in the presence of a complex of palladium (II) to make room for the goods in good yields. This process is a versatile and high atomic economy, which enables the transfer of various clusters both oligohaloarenos aromatic as heteroaromáticos. It has also developed a methodology to build an efficient and quimioselectiva links different carbon-carbon by adding successive different organometallic a kind of Indian aromatic dihalogenada under catalysis of palladium and in a single reaction medium. Thirdly, it has carried out the preparation of organometallic Indianness (III) funcionalizados so efficiently through processes orto-metalación species aromatic and heteroaromatic, followed by a subsequent transmetalación with Indian trichloride. The cross-coupling reactions, under the palladium catalysis, these organometallic have allowed synthesize species biarílicas and heterobiarílicas good yields, short reaction times and high atomic economy. Finally, it has developed a methodology which enables the efficient synthesis of ketones asymmetrical replaced by organometallic reaction between Indianness (III) and electrófilos organic, in the presence of carbon monoxide and a complex of palladium (0) In addition, the use species aromatic polihalogenadas as electrófilos leads to productors of carbonilación multiple good yields.

Author: ALVAREZ RODRIGO LUCIA.
Year: 2006.
University: OVIEDO [www.uniovi.es].
Place of defense: FACULTAD DE QUIMICA.
Place of preparation: INSTITUTO UNIVERSITARIO DE QUIMICA ORGANOMETALICA ENRIQUE MOLES.

Summary: This report is dedicated to the comprehensive study of the reaction of different complexes zirconoceno (imina-, alquino- and alquenozirconoceno) and olefins heterosustituidas, especially enol ethers. The first chapter describes the reaction of complex iminazirconoceno and enol or alil ethers, which are obtained alil and homoalilaminas through a sequential process promoted by zirconium liaison CH activation of the amine and replacement nucleófila formally with the group alcóxido of enol or alil ether. The second section presents the study of the reaction of cross coupling compound alquenillitio and olefins heterosustituidas promoted by zirconium, which leads to the synthesis regional and diastereoselectiva of 1,3-butadienos and ciclobutenos. In addition, the reaction of complex arinozirconoceno and enol ethers allows funcionalización selective aromatic rings. The third chapter gives results relating to the study of the reaction of complex alquenozirconoceno and enol ethers cyclical. The course of the reaction is highly dependent on the size of the cycle enol ethers employee. It has revealed a new reactivity of these complexes and has gained a wide variety of compounds highly funcionalizados. The latest research is part of the field of catalysis. It has developed a methodology for the synthesis of Grignard reagents high structural complexity from simple substrates starting with catalytic amounts of a compound of zirconium. Moreover, this strategy has been used in the synthesis of carbociclos medium in size.

Author: Ciclosi Marco.
Year: 2006.
University: VALENCIA [www.uv.es].
Place of defense: Facultat de Química.
Place of preparation: Facultad de Química.

Summary: It summed up the new ligand HTIMP3 with symmetry C3 and studied its ability to coordination in the face of transition metals. Subsequently, it was found the ability of the metal complex of Palladium and Iridio as catalysts in reactions model, the coupling reaction crossover Suzuki-Miyaura in the case of complex Palladium and dimerización of fenilacetileno induced by the complex of iridium.