{"id":64933,"date":"2008-04-06T00:00:00","date_gmt":"2008-04-06T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/epoxidacion-regioselectiva-de-diolefinas-terpenicas-mediante-catalizadores-heterogeneos\/"},"modified":"2008-04-06T00:00:00","modified_gmt":"2008-04-06T00:00:00","slug":"epoxidacion-regioselectiva-de-diolefinas-terpenicas-mediante-catalizadores-heterogeneos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/epoxidacion-regioselectiva-de-diolefinas-terpenicas-mediante-catalizadores-heterogeneos\/","title":{"rendered":"Epoxidaci\u00f3n regioselectiva de diolefinas terp\u00e9nicas mediante catalizadores heterog\u00e9neos."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jose Carretero Gonzaga <\/strong><\/h2>\n<p>En este trabajo se ha investigado la epoxidaci\u00f3n regioselectiva de diolefinas terp\u00e9nicas (carvona, limoneno, terpinoleno, alfa- y gamma-terpineno) mediante catalizadores heterog\u00e9neos con el objetivo de obtener los correspondientes monoep\u00f3xidos. Se ha n seguido los principios de la denominada \u00c2\u00bfqu\u00edmica verde\u00c2\u00bf para desarrollar procesos catal\u00edticos lo menos contaminantes posibles, centr\u00e1ndose en el empleo de disolventes no halogenados, h2o2 como oxidante, y catalizadores heterog\u00e9neos altamente select ivos, f\u00e1cilmente recuperables y reutilizables en lo posible. Se han estudiado tres grupos de catalizadores con diferentes caracter\u00edsticas (titanosilicatos, al\u00faminas y catalizadores b\u00e1sicos). Tanto los titanosilicatos, fundamentalmente xerogeles sio2- tio2 obtenidos por el m\u00e9todo sol-gel, como las diferentes gamma-al\u00faminas se han empleado para epoxidar los sustratos que presentan dobles enlaces ricos en electrones. Sin embargo, para los alquenos pobres en electrones, caso del grupo cet\u00f3nico alfa,b eta-insaturado de la carvona, se han empleado diversos catalizadores b\u00e1sicos, fundamentalmente la resina ani\u00f3nica amberlita ira-900 a la que se le han incorporado aniones hidroxilo por intercambio i\u00f3nico. los resultados experimentales han mostrado qu e los xerogeles sio2-tio2 s\u00f3lo son efectivos con los alquenos ricos en electrones que presentan poca reactividad (alquenos terminales), mostr\u00e1ndose activos pero poco selectivos hacia la obtenci\u00f3n de ep\u00f3xidos con alquenos m\u00e1s reactivos (alquenos polis ustituidos con grupos alquilo). No obstante, las al\u00faminas s\u00ed se han mostrado como excelentes catalizadores para la obtenci\u00f3n de los ep\u00f3xidos de dichos alquenos, siendo muy activos y selectivos, adem\u00e1s de reutilizables mediante un proceso de regenerac i\u00f3n. Asimismo, la resina ani\u00f3nica amberlita ira-900, una vez intercambiado con aniones hidroxilo, se ha mostrado muy activa y selectiva en la epoxidaci\u00f3n del grupo cet\u00f3nico alfa,beta-insaturado de la carvona, siendo tambi\u00e9n reutizable despu\u00e9s de una conveniente regeneraci\u00f3n.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Epoxidaci\u00f3n regioselectiva de diolefinas terp\u00e9nicas mediante catalizadores heterog\u00e9neos.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Epoxidaci\u00f3n regioselectiva de diolefinas terp\u00e9nicas mediante catalizadores heterog\u00e9neos. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jose Carretero Gonzaga <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 04\/06\/2008<\/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>Jos\u00e9 Antonio Delgado Dobladez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jos\u00e9 Luis Sotelo sancho <\/li>\n<li>Jos\u00e9 Miguel Rodr\u00edguez maroto (vocal)<\/li>\n<li>david pedro Serrano granados (vocal)<\/li>\n<li>Antonio De lucas Martinez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jose Carretero Gonzaga En este trabajo se ha investigado la epoxidaci\u00f3n regioselectiva de diolefinas terp\u00e9nicas (carvona, limoneno, [&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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