{"id":84391,"date":"2000-05-05T00:00:00","date_gmt":"2000-05-05T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/contribucion-electroquimica-al-estudio-de-las-reacciones-de-alquilacion-de-compuestos-beta-dicarbonilicos-con-haluros-de-alquilo\/"},"modified":"2000-05-05T00:00:00","modified_gmt":"2000-05-05T00:00:00","slug":"contribucion-electroquimica-al-estudio-de-las-reacciones-de-alquilacion-de-compuestos-beta-dicarbonilicos-con-haluros-de-alquilo","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/contribucion-electroquimica-al-estudio-de-las-reacciones-de-alquilacion-de-compuestos-beta-dicarbonilicos-con-haluros-de-alquilo\/","title":{"rendered":"Contribucion electroquimica al estudio de las reacciones de alquilaci\u00f3n de compuestos beta-dicarbonilicos con haluros de alquilo"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Abdellah Anhari <\/strong><\/h2>\n<p>La a-alquilaci\u00f3n de compuestos b-dicarbonilicos es un importante proceso en sintesis organica para la formacion de enlaces carbono-carbono. Para impedir la formacion de productos de o-alquilacion y mejorar la produccion de los productos de c-alquilaci\u00f3n se recurri\u00f3  a la reaccion de los complejos metalicos principalmente de co(ii), co(iii) y cu(ii) de compuestos b-dicarbonilicos sencillos, como la pentano -2-4-diona con los haluros de alquilo.  la reducci\u00f3n electroquimica de los acetilacetonatos de metales de transici\u00f3n:fe(acac)3,co(acac)2,co(acac)3 y cu(acac)2 ha sido estudiada por voltametria ciclica, coulombimetria y electrolisis. Los mecanismos de estos compuestos se han determinado en dmf, acn,dcm y dce. La separacion, purificacion y analisis de los productos finales nos ha permitido la deteccion de un producto nunca detectado en la reduccion de co(acac)2 y co(acac)3y que es el tetrabutilamonio de tris(acetilacetonato) de co(ii):  coii(acac)3nbu4 y que se puede formar en los dos casos seg\u00fan las ecuaciones siguientes:  coii(acac)2+1\u00e9 &#8212;&#8212;&gt;[co(acac)2]  [coi(acac)2]- +coii(acac)2&#8212;-&gt;coi(acac)+[coii(acac)3]  [co(acac)3]+nbu4&#8212;&#8212;-&gt; [co(acac)3]nbu+4  coiii(acac)3+1\u00e9&#8212;&#8212;&#8211;&gt; [co(acac)3]  [co(acac)3+nbu4&#8212;&#8212;&#8211;&gt; co[(acac)3]nbu4+  esta sal se analizo por hrmn, ir  y ae y se compar\u00f3 con una muestra sintetizada seg\u00fan una metodica descrita en la bibliografia. El voltagrama de co(acac)2 y co(acac)3. Su reduccion lleva a la formacion del acetilacetonato y del cobre metalico.  a continuaci\u00f3n se estudio la reacci\u00f3n de alquilaci\u00f3n de estos complejos reducidos electroquimicamente y co ii (acac)3nbu4 con diferentes haluros de alquilo a temperaturas suaves de 40\u00c2\u00ba c en acd y dmf. Excepto el 1-bromoadamantano y iodobenceno todos los haluros utilizados dan un rendimiento aceptable,ademas el 4-o2nphch2c1 que nunca ha reaccionado en quimica convencional ahora da un buen rendimiento en producto de dialquilacion en<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Contribucion electroquimica al estudio de las reacciones de alquilaci\u00f3n de compuestos beta-dicarbonilicos con haluros de alquilo<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Contribucion electroquimica al estudio de las reacciones de alquilaci\u00f3n de compuestos beta-dicarbonilicos con haluros de alquilo <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Abdellah Anhari <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 05\/05\/2000<\/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>Iluminada Gallardo Garc\u00eda<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: marcial Moreno ma\u00f1as <\/li>\n<li>enric Brillas (vocal)<\/li>\n<li>anna Roglans ribas (vocal)<\/li>\n<li>jean Pinson (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Abdellah Anhari La a-alquilaci\u00f3n de compuestos b-dicarbonilicos es un importante proceso en sintesis organica para la formacion [&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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