<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1870-249X</journal-id>
<journal-title><![CDATA[Journal of the Mexican Chemical Society]]></journal-title>
<abbrev-journal-title><![CDATA[J. Mex. Chem. Soc]]></abbrev-journal-title>
<issn>1870-249X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Química de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-249X2007000400007</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Et3B, an Efficient Mediator for Xanthate Transfer Based Radical Processes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Merinos]]></surname>
<given-names><![CDATA[Juan Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Pérez]]></surname>
<given-names><![CDATA[Juan Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-García]]></surname>
<given-names><![CDATA[Leonel]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Lima]]></surname>
<given-names><![CDATA[Susana]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Ruiz]]></surname>
<given-names><![CDATA[Heraclio]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Autónoma del Estado de Hidalgo Centro de Investigaciones Químicas ]]></institution>
<addr-line><![CDATA[Pachuca Hidalgo]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2007</year>
</pub-date>
<volume>51</volume>
<numero>4</numero>
<fpage>209</fpage>
<lpage>212</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2007000400007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2007000400007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2007000400007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The triethylborane mediated intermolecular addition of diverse carbon radicals, derived from the corresponding xanthates, to allyl acetate (10b) and 4-allyl-1,2-dimethoxybenzene (10a) was studied in various solvents. In most cases, the product yields in water at room temperature were as good as, or better than, those obtained using 1,2-dichloroethane as the solvent. In contrast, ethanol in most cases was not a useful solvent in which to conduct these reactions.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[El trietilborano fue utilizado como iniciador de la reacción de adición intermolecular de diversos radicales alquilo derivados de los correspondientes xantatos al acetato de alilo (10b) y al 4-alil-1,2-dimetoxibenceno (10a). La reacción fue estudiada en diversos disolventes; en la mayoría de los casos, los rendimientos obtenidos en agua a temperatura ambiente fueron mejores que cuando se utilizó 1,2-dicloroetano como disolvente. En contraste, el etanol no fue un disolvente útil para llevar a cabo estas reacciones.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Xanthate]]></kwd>
<kwd lng="en"><![CDATA[triethylborane]]></kwd>
<kwd lng="en"><![CDATA[radical addition]]></kwd>
<kwd lng="en"><![CDATA[olefins]]></kwd>
<kwd lng="es"><![CDATA[Xantato]]></kwd>
<kwd lng="es"><![CDATA[trietilborano]]></kwd>
<kwd lng="es"><![CDATA[adiciones radicalarias]]></kwd>
<kwd lng="es"><![CDATA[olefinas]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Article</font></p>      <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="4"><b>Et<sub>3</sub>B, an Efficient Mediator for Xanthate Transfer Based Radical Processes</b></font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>Juan Pablo Garc&iacute;a&#45;Merinos, Juan Pablo Hern&aacute;ndez&#45;P&eacute;rez, Leonel Mart&iacute;nez&#45;Garc&iacute;a, Susana Rojas&#45;Lima and Heraclio L&oacute;pez&#45;Ruiz*</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><i>Centro de Investigaciones Qu&iacute;micas, Universidad Aut&oacute;noma del Estado de Hidalgo, Carretera Pachuca&#45;Tulancingo Km. 4.5 Mineral de la Reforma, Hidalgo, M&eacute;xico, CP 42076.</i> <a href="mailto:heraclio@uaeh.edu.mx">heraclio@uaeh.edu.mx</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Recibido el 3 de agosto de 2007    ]]></body>
<body><![CDATA[<br> 	Aceptado el 7 de noviembre de 2007</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">The triethylborane mediated intermolecular addition of diverse carbon radicals, derived from the corresponding xanthates, to allyl acetate (<b>10b</b>) and 4&#45;allyl&#45;1,2&#45;dimethoxybenzene (<b>10a</b>) was studied in various solvents. In most cases, the product yields in water at room temperature were as good as, or better than, those obtained using 1,2&#45;dichloroethane as the solvent. In contrast, ethanol in most cases was not a useful solvent in which to conduct these reactions.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Key words.</b> Xanthate, triethylborane, radical addition, olefins.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>  	    <p align="justify"><font face="verdana" size="2">El trietilborano fue utilizado como iniciador de la reacci&oacute;n de adici&oacute;n intermolecular de diversos radicales alquilo derivados de los correspondientes xantatos al acetato de alilo (<b>10b</b>) y al 4&#45;alil&#45;1,2&#45;dimetoxibenceno (1<b>0a</b>). La reacci&oacute;n fue estudiada en diversos disolventes; en la mayor&iacute;a de los casos, los rendimientos obtenidos en agua a temperatura ambiente fueron mejores que cuando se utiliz&oacute; 1,2&#45;dicloroetano como disolvente. En contraste, el etanol no fue un disolvente &uacute;til para llevar a cabo estas reacciones.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> Xantato, trietilborano, adiciones radicalarias, olefinas.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><a href="/pdf/jmcs/v51n4/v51n4a7.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Acknowledgements</b></font></p>  	    <p align="justify"><font face="verdana" size="2">We thank CONACyT (J49336&#45;Q) and UAEH&#45;PAI 2006&#45;66B for financial support. Also we thank Dra. Rosa Santillan and Dr. Joseph M. Muchowski for helpful discussions.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">1.&nbsp;a) Zard, Z. S. 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<body><![CDATA[ ]]></body><back>
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