{"id":74129,"date":"2018-03-09T23:19:06","date_gmt":"2018-03-09T23:19:06","guid":{"rendered":""},"modified":"2018-03-09T23:19:06","modified_gmt":"2018-03-09T23:19:06","slug":"nuevas-reacciones-de-formacion-de-enlaces-carbono-carbono-y-carbono-heteroatomo-promovidas-por-iones-yodonio-sa%c2%adntesis-regioselectiva-de-olefinas-tetrasustituidas-naftalenos-y-benzoheterociclos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/nuevas-reacciones-de-formacion-de-enlaces-carbono-carbono-y-carbono-heteroatomo-promovidas-por-iones-yodonio-sa%c2%adntesis-regioselectiva-de-olefinas-tetrasustituidas-naftalenos-y-benzoheterociclos\/","title":{"rendered":"Nuevas reacciones de formaci\u00f3n de enlaces carbono-carbono y carbono-hetero\u00e1tomo promovidas por iones yodonio. s\u00edntesis regioselectiva de olefinas tetrasustituidas, naftalenos y benzoheterociclos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Henar Vazquez Villa <\/strong><\/h2>\n<p>En la presente memoria se recogen nuevas reacciones de formaci\u00f3n de enlaces carbono-carbono y carbono-hetero\u00e1tomo basadas en el empleo del reactivo tetrafluroborato de bis(piridina) yodonio (i) (ipy2bf4), como fuente de iones yodonio. Estos procesos ofrecen una alternativa al empleo de metales de transici\u00f3n para lograr, de forma eficaz y selectiva, la preparaci\u00f3n de mol\u00e9culas org\u00e1nicas.  en el cap\u00edtulo 1 se describe la s\u00edntesis de 2-aril-1-feniltio-2-yodoolefinas por reacci\u00f3n de adicci\u00f3n de arenos a feniltioacetilenos en presencia de ipy2bf4. Estos compuestos poseen inter\u00e9s como moduladores selectivos de los receptores de estr\u00f3geno: al respecto, se recogen los resultados obtenidos en ensayos biol\u00f3gicos preliminares para establecer su actividad biol\u00f3gica.  en el cap\u00edtulo 2 se expone el estudio de la reactividad de sistemas de tipo alquinil-aldehido frente a ipy2bf4, en presencia de diversos nucle\u00f3filos. as\u00ed, la reacci\u00f3n de o-alquinilbenzaldeh\u00eddos con alcoholes, diferentes nucle\u00f3filos sililados y arenos conduce, de forma regioselectiva, a derivados de 4-yodo-1h-benzol[c]pirano a trav\u00e9s de una reacci\u00f3n que implica ciclaci\u00f3n del grupo carbonilo sobre el triple enlace promovida por iones yodonio y la captura posterior del intermedio resultante por parte del nucle\u00f3filo.  el cap\u00edtulo 3 estudia el proceso que tiene lugar al emplear acetilenos y olefinas como nucle\u00f3filos frente a o-alquinilbenzaldeh\u00eddos. De esta forma, se ha desarrollado un nuevo m\u00e9todo de s\u00edntesis regioselectiva de 1-yodonaftalenos y 1-naftilcetonas a trav\u00e9s de una reacci\u00f3n formal de cicloadici\u00f3n de cationes benzo[c]pirilio con alquinos y olefinas, respectivamente. Esta metodolog\u00eda se ha aplicado con posteroridad en la s\u00edntesis de sistemas heteroc\u00edclicos benzofusionados, dedicando especial atenci\u00f3n a la s\u00edntesis de indoles.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Nuevas reacciones de formaci\u00f3n de enlaces carbono-carbono y carbono-hetero\u00e1tomo promovidas por iones yodonio. s\u00edntesis regioselectiva de olefinas tetrasustituidas, naftalenos y benzoheterociclos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Nuevas reacciones de formaci\u00f3n de enlaces carbono-carbono y carbono-hetero\u00e1tomo promovidas por iones yodonio. s\u00edntesis regioselectiva de olefinas tetrasustituidas, naftalenos y benzoheterociclos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Henar Vazquez Villa <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Oviedo<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 25\/05\/2005<\/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 Joaquin Barluenga Mur<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: josep Font cierco <\/li>\n<li>angel Rodriguez de lera (vocal)<\/li>\n<li>pedro Molina buend\u00eda (vocal)<\/li>\n<li> Sarandeses da costa Luis Alberto (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Henar Vazquez Villa En la presente memoria se recogen nuevas reacciones de formaci\u00f3n de enlaces carbono-carbono y [&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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