{"id":10207,"date":"1996-01-01T00:00:00","date_gmt":"1996-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/1996\/01\/01\/construccio-estereocontrolada-de-triquinans-angulars-mitjancant-reaccions-de-pauson-khand-intramoleculars-sintesi-enantioselectiva-del-nor-pentalene\/"},"modified":"1996-01-01T00:00:00","modified_gmt":"1996-01-01T00:00:00","slug":"construccio-estereocontrolada-de-triquinans-angulars-mitjancant-reaccions-de-pauson-khand-intramoleculars-sintesi-enantioselectiva-del-nor-pentalene","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/construccio-estereocontrolada-de-triquinans-angulars-mitjancant-reaccions-de-pauson-khand-intramoleculars-sintesi-enantioselectiva-del-nor-pentalene\/","title":{"rendered":"Construccio estereocontrolada de triquinans angulars mitjancant reaccions de pauson-khand intramoleculars. sintesi enantioselectiva del (+)-nor-pentalene."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Tormo I Blasco Jordi <\/strong><\/h2>\n<p>En la presente tesis doctoral se han preparado diferentes triquinanos angulares utilizando la reaccion intramolecular de pauson-khand, utilizando diferentes alcoholes quirales como auxiliares. Los rendimientos de reaccion estan entre moderados y excelentes (30-84%), mientras que las diastereoselectivades oscilan entre nulas y excelentes (12:1). Utilizando como paso clave la reaccion intramolecular de pauson-khand, y utilizando como auxiliar el alcohol 3-neopentiloxi-isoborneol, se ha preparado de forma enantiomericamente pura el (+)-nor-pentaleneno con buenos rendimientos. Una vez optimizados los pasos de reduccion del doble enlace del aducto de pauson-khand y la recuperacion del auxiliar quiral en presencia de ioduro de samario, se paso a realizar diferentes ensayos de sintesis enantioselectiva del producto natural (+)-pentaleneno utilizando un acetal ciclico de la cetona como grupo funcional precursor de la entrada del grupo metilo en la posicion c9 del (+)-pentaleneno.  ante la imposibilidad de obtener un ester intermedio clave debido a la incompatibilidad del acetal ciclico con las reacciones que se llevaban a cabo, se decidio plantear nuevas estrategias para la sintesis del (+)-pentaleneno, que se llevaran a cabo en futuros trabajos.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Construccio estereocontrolada de triquinans angulars mitjancant reaccions de pauson-khand intramoleculars. sintesi enantioselectiva del (+)-nor-pentalene.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Construccio estereocontrolada de triquinans angulars mitjancant reaccions de pauson-khand intramoleculars. sintesi enantioselectiva del (+)-nor-pentalene. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Tormo I Blasco Jordi <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1996<\/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>Miguel \u00e1ngel Peric\u00c1\u00a0s Brondo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Marcial Moreno Ma\u00f1as <\/li>\n<li>Josep Bonjoch Sese (vocal)<\/li>\n<li>Pedro Molina Buend\u00eda (vocal)<\/li>\n<li>Antoni Riera Escale (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Tormo I Blasco Jordi En la presente tesis doctoral se han preparado diferentes triquinanos angulares utilizando la [&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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