<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-06-17T16:33:45Z</responseDate><request verb="GetRecord" identifier="oai:riubu.ubu.es:10259/4529" metadataPrefix="mods">https://riubu.ubu.es/oai/request</request><GetRecord><record><header><identifier>oai:riubu.ubu.es:10259/4529</identifier><datestamp>2022-05-20T13:22:37Z</datestamp><setSpec>com_10259_3593</setSpec><setSpec>com_10259_5086</setSpec><setSpec>com_10259_2604</setSpec><setSpec>col_10259_3594</setSpec></header><metadata><mods:mods xmlns:mods="http://www.loc.gov/mods/v3" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd">
<mods:name>
<mods:namePart>Suárez, Anisley</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Martínez Lara, Fernando</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Suarez Pantiga, Samuel</mods:namePart>
</mods:name>
<mods:name>
<mods:namePart>Sanz Díez, Roberto</mods:namePart>
</mods:name>
<mods:extension>
<mods:dateAvailable encoding="iso8601">2017-07-13T10:26:42Z</mods:dateAvailable>
</mods:extension>
<mods:extension>
<mods:dateAccessioned encoding="iso8601">2018-01-13T03:45:06Z</mods:dateAccessioned>
</mods:extension>
<mods:originInfo>
<mods:dateIssued encoding="iso8601">2017-01</mods:dateIssued>
</mods:originInfo>
<mods:identifier type="issn">2365-6549</mods:identifier>
<mods:identifier type="uri">http://hdl.handle.net/10259/4529</mods:identifier>
<mods:identifier type="doi">10.1002/slct.201700013</mods:identifier>
<mods:abstract>A convenient procedure for accessing a,a-bis(indol-3-yl) ketones&#xd;
from indoles and a-oxoaldehydes is described using an&#xd;
inexpensive and commercially available catalyst such as ptoluenesulfonic&#xd;
acid monohydrate. This protocol allows for the&#xd;
first time the synthesis of 2,2-bis(indolyl)-1-alkylethanones by&#xd;
employing aliphatic 2-oxoaldehydes, even as aqueous solutions.&#xd;
The high-yielded obtained ketones have been shown as&#xd;
useful starting materials for further synthetic transformations.</mods:abstract>
<mods:language>
<mods:languageTerm>eng</mods:languageTerm>
</mods:language>
<mods:accessCondition type="useAndReproduction">info:eu-repo/semantics/openAccess</mods:accessCondition>
<mods:titleInfo>
<mods:title>PTSA-Catalyzed Reaction of Indoles with 2-Oxoaldehydes: Synthesis of α,α-Bis(indol-3-yl) Ketones</mods:title>
</mods:titleInfo>
<mods:genre>info:eu-repo/semantics/article</mods:genre>
</mods:mods></metadata></record></GetRecord></OAI-PMH>