{"id":70671,"date":"2004-06-10T00:00:00","date_gmt":"2004-06-10T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sa%c2%adntesis-de-la-feromona-sexual-de-cylas-formicarius-elegantulus-bioensayos-de-laboratorio-y-de-campo\/"},"modified":"2004-06-10T00:00:00","modified_gmt":"2004-06-10T00:00:00","slug":"sa%c2%adntesis-de-la-feromona-sexual-de-cylas-formicarius-elegantulus-bioensayos-de-laboratorio-y-de-campo","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/sa%c2%adntesis-de-la-feromona-sexual-de-cylas-formicarius-elegantulus-bioensayos-de-laboratorio-y-de-campo\/","title":{"rendered":"S\u00edntesis de la feromona sexual de cylas formicarius elegantulus. bioensayos de laboratorio y de campo."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Tania Sureda Fern\u00e1ndez <\/strong><\/h2>\n<p>Cylas jormicarius elegantulus es una de las plagas m\u00e1s devastadoras que atacan al boniato en condiciones naturales y de almacenamiento y, en consecuencia es uno de los principales factores limitantes en la producci\u00f3n de este cultivo. Las p\u00e9rdidas ocasionadas por el insecto alcanzan entre un 60 y 97% de las cosechas.  la feromona sexual de c. F elegantulus fue aislada e identificada en 1986 como el (e)-2- butenoato de (z)-3-dodecenilo. En el presente trabajo se estudia la composici\u00f3n feromonal del insecto presente en cuba y se desarrolla la s\u00edntesis de la feromona por m\u00e9todos estereoselectivos y estereoespec\u00edficos as\u00ed como su actividad en laboratorio y campo. En el estudio de la composici\u00f3n  feromonal s\u00f3lo se ha detectado el (e)-2-butenoato de (z)-3-dodecenilo como \u00fanico componente de la feromona sexual tras an\u00e1lisis de vol\u00e1tiles de hembras v\u00edrgenes por spme (solid phase microextraction). La s\u00edntesis del (z)-3-dodecenol, alcohol precursor del atrayente natural, se ha llevado a cabo por  diferentes procedimientos sint\u00e9ticos entre los que cabe citar: a) reacci\u00f3n de wittig del 3- hidroxipropilentrifenilfosforano con nonanal, b) r\u00e9acci\u00f3n de metilentrifenilfosforano con \u00f3xido de etileno seguido de metalaci\u00f3n \u00abin situ\u00bb y reacci\u00f3n de wittig con nonanal, c) reacci\u00f3n de acoplamiento de yoduros  vin\u00edlicos conteniendo una funci\u00f3n oxigenada debidamente protegida en forma de metoximetil, tetrahidropiranil y tercbutildifenilsilil \u00e9ter, con un reactivo de grignard en presencia de un catalizador de paladio, d) reacci\u00f3n de suzuki de los propios yoduros con \u00e1cido n-octilbor\u00f3nico en presencia de un  catalizador de paladio o n\u00edquel, e) hidrogenaci\u00f3n estereoselectiva del precursor acetil\u00e9nico 3-dodecinol. El alcohol deseado se ha obtenido con una pureza estereom\u00e9rica z\/e superior al 99%. La esterificaci\u00f3n del alcohol para obtener el correspondiente crotonato se conduce por reacci\u00f3n cl\u00e1sica con cloruro de crotonilo y p<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>S\u00edntesis de la feromona sexual de cylas formicarius elegantulus. bioensayos de laboratorio y de campo.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 S\u00edntesis de la feromona sexual de cylas formicarius elegantulus. bioensayos de laboratorio y de campo. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Tania Sureda Fern\u00e1ndez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 06\/10\/2004<\/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>Angel Guerrero Perez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: marina Blas esteban <\/li>\n<li>mag\u00ed Riva viladot (vocal)<\/li>\n<li>benjuam\u00edn Rodr\u00edguez gonz\u00e1lez (vocal)<\/li>\n<li>francesc Camps diez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Tania Sureda Fern\u00e1ndez Cylas jormicarius elegantulus es una de las plagas m\u00e1s devastadoras que atacan al boniato [&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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