{"id":146470,"date":"1994-01-01T00:00:00","date_gmt":"1994-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/reacciones-de-cicloadicion-con-complejos-de-alquinil-carbeno-de-cromo-y-de-wolframio\/"},"modified":"1994-01-01T00:00:00","modified_gmt":"1994-01-01T00:00:00","slug":"reacciones-de-cicloadicion-con-complejos-de-alquinil-carbeno-de-cromo-y-de-wolframio","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/reacciones-de-cicloadicion-con-complejos-de-alquinil-carbeno-de-cromo-y-de-wolframio\/","title":{"rendered":"Reacciones de cicloadicion con complejos de alquinil-carbeno de cromo y de wolframio"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Lourdes Jordi Vilaro <\/strong><\/h2>\n<p>Aprovechando la activacion del triple enlace de los complejos de alquinil carbeno de cromo o wolframio se llevo a cabo la reaccion de estos complejos con toda una serie de eteres de enol silicicos, obteniendose, como producto mayoritario, el complejo ciclobutenilico resultante de una cicloadicion (2+2). Un estudio cinetico de la reaccion de cicloadicion (2+2) entre el complejo pentacarbonil ((etoxi) fenil-etinilcarbeno) wolframio (0) y el acetal de ceteno 2-metil-1-metoxi-1-trimetilsililoxipropeno revelo unos datos consistentes, para esta reaccion, con un mecanismo por pasos a traves de un intermedio zwitterionico.  en esta tesis tambien se ha estudiado la reaccion de pauson-khand intramolecular con complejos alquinilcarbenicos, observandose que solo los complejos de alilaminoalquinilcarbeno dan lugar a la cicloadicion y carbonilacion con co2(co)8. Podriamos destacar la reaccion del complejo pentacarbonil ((etoxi)-trimetilsililetinilcarbeno) wolframio con co2(co)8 que da lugar a un novedoso complejo carbenico de cobalto, la formacion del cual se explicaria por una diferente evolucion de la reaccion de pauson-khand convencional.  finalmente, en esta tesi tambien se ha demostrado la capacidad de cicloadicion carbonilante de 1,6-eninos de las especies w(co)5.Thf,cr(co)5.Thf,(w(co)5f)\u00bb y (cr(co)5f)\u00bb.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Reacciones de cicloadicion con complejos de alquinil-carbeno de cromo y de wolframio<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Reacciones de cicloadicion con complejos de alquinil-carbeno de cromo y de wolframio <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Lourdes Jordi Vilaro <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1994<\/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>Josep Mar\u00eda Moret\u00f3 Canela<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jaume Vilarrasa Llorens <\/li>\n<li>Marcial Moreno Ma\u00f1as (vocal)<\/li>\n<li>Francesc Camps Diez (vocal)<\/li>\n<li>Josep Ros (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Lourdes Jordi Vilaro Aprovechando la activacion del triple enlace de los complejos de alquinil carbeno de cromo [&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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