{"id":102965,"date":"2018-03-11T10:25:20","date_gmt":"2018-03-11T10:25:20","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/complejos-de-cobrei-con-ligandos-pybox-enantiopuros-aplicaciones-en-catalisis-asimetrica\/"},"modified":"2018-03-11T10:25:20","modified_gmt":"2018-03-11T10:25:20","slug":"complejos-de-cobrei-con-ligandos-pybox-enantiopuros-aplicaciones-en-catalisis-asimetrica","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica-inorganica\/complejos-de-cobrei-con-ligandos-pybox-enantiopuros-aplicaciones-en-catalisis-asimetrica\/","title":{"rendered":"Complejos de cobre(i) con ligandos pybox enantiopuros. aplicaciones en cat\u00e1lisis asim\u00e9trica."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda Panera Castro <\/strong><\/h2>\n<p>Este trabajo describe la s\u00edntesis y reactividad de complejos de cobre(i) con ligandos pybox enantiopuros, as\u00ed como algunas de sus aplicaciones en procesos de cat\u00e1lisis asim\u00e9trica. en el cap\u00edtulo 1 se presenta la s\u00edntesis de complejos de cobre(i) con ligandos r-pybox (r = ipr, ph, ipr-pybox-diph) a partir de distintos precursores met\u00e1licos. Se han preparado los complejos dinucleares [cu2(r-pybox)2][y]2 (y = pf6, cf3so3) y mononucleares [cu(r-pybox)2][pf6] mediante la reacci\u00f3n entre [cu(mecn)4][pf6] o cucf3so3\u00c2\u00bf0.5c6h6 y los correspondientes ligandos pybox en la proporci\u00f3n adecuada. La reacci\u00f3n de halogenuros de cobre(i) y distintas pybox origina especies de diferentes nuclearidades, [cu4(m3-x)2(m-x)2(r-pybox)2] (r = ipr, ph, ipr-pybox-diph; x = cl, br, i) y [cu2(m-cl)(r-pybox)2][cucl2] en las que los cobres presentan halogenuros puente y ligandos pybox en su esfera de coordinaci\u00f3n. se ha estudiado la reactividad de los complejos dinucleares [cu2(r-pybox)2][y]2 frente a ligandos isocianuro, obteni\u00e9ndose las especies cati\u00f3nicas [cu2(r-pybox)2(cnr1)2][y]2 (y = pf6, cf3so3; r1 = bn, cy). Las fosfinas monodentadas pmeph2 y pph3 reaccionan con los mismos complejos dando lugar a los compuestos [cu(r-pybox)(pr1ph2)2][y] (y = pf6, cf3so3), mientras que las fosfinas bidentadas conducen a la formaci\u00f3n de complejos mononucleares, [cu(r-pybox)(dppf)][pf6] y [cu(r-pybox){(s)-peap}][pf6], o dinucleares, [cu2(r-pybox)(dppm)2][pf6]2.  en el cap\u00edtulo 2 se eval\u00faa la actividad catal\u00edtica de algunos de los complejos preparados. Se presentan los resultados obtenidos en la reacci\u00f3n de ciclopropanaci\u00f3n de estireno con acetilacetato de etilo, en la que las especies dinucleares [cu2(r-pybox)2][y]2 (r = ipr, ph; y = pf6, cf3so3) y [cu2(m-cl)(ipr-pybox)2][cucl2] son poco eficaces, ya que originan altos rendimientos pero bajas diastereo- y enantioselectividades. Se ha evaluado la actividad catal\u00edtica de los complejos mono, di y tetranucleares en la s\u00edntesis asim\u00e9trica de aminas proparg\u00edlicas. En este proceso los complejos dinucleares [cu2(ph-pybox)2][y]2 (y = pf6, cf3so3) presentan una elevada eficacia (rendimientos hasta del 88% y ee hasta del 86%).<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Complejos de cobre(i) con ligandos pybox enantiopuros. aplicaciones en cat\u00e1lisis asim\u00e9trica.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Complejos de cobre(i) con ligandos pybox enantiopuros. aplicaciones en cat\u00e1lisis asim\u00e9trica. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda Panera Castro <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Oviedo<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 15\/07\/2010<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Mar\u00eda Pilar Gamasa Bandr\u00e9s<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jos\u00e9 tom\u00e1s Cuenca agreda <\/li>\n<li>dario Cuervo rodriguez (vocal)<\/li>\n<li>pedro Jos\u00e9 P\u00e9rez romero (vocal)<\/li>\n<li>Elena Lalinde pe\u00f1a (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Panera Castro Este trabajo describe la s\u00edntesis y reactividad de complejos de cobre(i) con ligandos pybox [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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