<?xml version="1.0"?><rdf:RDF xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:edm="http://www.europeana.eu/schemas/edm/" xmlns:wgs84_pos="http://www.w3.org/2003/01/geo/wgs84_pos" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdaGr2="http://rdvocab.info/ElementsGr2" xmlns:oai="http://www.openarchives.org/OAI/2.0/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:ore="http://www.openarchives.org/ore/terms/" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:dcterms="http://purl.org/dc/terms/"><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:doc-LLVIPIYC/13a87b08-7d30-4cee-b4a4-27ed8d9c6ad8/HTML"><dcterms:extent>32 KB</dcterms:extent></edm:WebResource><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:doc-LLVIPIYC/58e4ab3f-f466-453a-80cc-008632160c1e/PDF"><dcterms:extent>122 KB</dcterms:extent></edm:WebResource><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:doc-LLVIPIYC/8a19af28-580d-4960-b76b-7e555daa5ba0/TEXT"><dcterms:extent>28 KB</dcterms:extent></edm:WebResource><edm:TimeSpan rdf:about="1998-2025"><edm:begin xml:lang="en">1998</edm:begin><edm:end xml:lang="en">2025</edm:end></edm:TimeSpan><edm:ProvidedCHO rdf:about="URN:NBN:SI:doc-LLVIPIYC"><dcterms:isPartOf rdf:resource="https://www.dlib.si/details/URN:NBN:SI:spr-KC6O72BG" /><dcterms:issued>2011</dcterms:issued><dc:creator>Kikelj, Danijel</dc:creator><dc:creator>Zidar, Nace</dc:creator><dc:format xml:lang="sl">številka:1</dc:format><dc:format xml:lang="sl">letnik:58</dc:format><dc:format xml:lang="sl">str. 151-157</dc:format><dc:identifier>ISSN:1318-0207</dc:identifier><dc:identifier>COBISSID:2982513</dc:identifier><dc:identifier>URN:URN:NBN:SI:doc-LLVIPIYC</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="sl">Slovenian Chemical Society</dc:publisher><dc:publisher xml:lang="sl">Slovensko kemijsko društvo</dc:publisher><dcterms:isPartOf xml:lang="sl">Acta chimica slovenica</dcterms:isPartOf><dc:subject xml:lang="sl">barbiturna kislina</dc:subject><dc:subject xml:lang="sl">benzaldehid</dc:subject><dc:subject xml:lang="sl">kemijska sinteza</dc:subject><dc:subject xml:lang="sl">Michaelovi adukti</dc:subject><dc:subject xml:lang="sl">organska kemija</dc:subject><dc:subject xml:lang="sl">sinteza</dc:subject><dc:subject xml:lang="sl">TLC</dc:subject><dcterms:temporal rdf:resource="1998-2025" /><dc:title xml:lang="sl">Preparation and reactivity of 5-benzylidenebarbituric and 5-benzylidene-2-thiobarbituric acids|</dc:title><dc:description xml:lang="sl">The reaction between barbituric acid or 2-thiobarbituric acid and different benzaldehydes, dependent upon the applied reaction conditions, selectively yields three different product types, i.e. 5-benzylidene(thio)barbituric acids II, symetric Michael adducts III or 5-phenyl-1H-pyrano2,3-dpyrimidine-2,4(3H,5H)-diones and 5-phenyl-2-thioxo-2,3-dihydro- 1H-pyrano2,3-dpyrimidin-4(5H)-ones IV. The reaction mechanisms and reactivity of different benzaldehydes are discussed</dc:description><dc:description xml:lang="sl">Reakcija med barbiturno kislino ali 2-tiobarbiturno kislino in derivati benzaldehida lahko, ob uporabi različnih reakcijskih pogojev, selektivno vodi do treh strukturnih tipov reakcijskih produktov, t.j. 5-benziliden(tio)barbiturnih kislin II, simetričnih Michaelovih aduktov III ali 5-fenil-1H-pirano2,3-dpirimidin-2,4(3H,5H)-dionov in 5-fenil-2-tiokso-2,3- dihidro-1H-pirano2,3-dpirimidin-4(5H)-onov IV. članek obravnava tudi reakcijske mehanizme in razloge za opaženo reaktivnost izhodnih spojin</dc:description><edm:type>TEXT</edm:type><dc:type xml:lang="sl">znanstveno časopisje</dc:type><dc:type xml:lang="en">journals</dc:type><dc:type rdf:resource="http://www.wikidata.org/entity/Q361785" /></edm:ProvidedCHO><ore:Aggregation rdf:about="http://www.dlib.si/?URN=URN:NBN:SI:doc-LLVIPIYC"><edm:aggregatedCHO rdf:resource="URN:NBN:SI:doc-LLVIPIYC" /><edm:isShownBy rdf:resource="http://www.dlib.si/stream/URN:NBN:SI:doc-LLVIPIYC/58e4ab3f-f466-453a-80cc-008632160c1e/PDF" /><edm:rights rdf:resource="http://creativecommons.org/licenses/by/4.0/" /><edm:provider>Slovenian National E-content Aggregator</edm:provider><edm:intermediateProvider xml:lang="en">National and University Library of Slovenia</edm:intermediateProvider><edm:dataProvider xml:lang="sl">Slovensko kemijsko društvo</edm:dataProvider><edm:object rdf:resource="http://www.dlib.si/streamdb/URN:NBN:SI:doc-LLVIPIYC/maxi/edm" /><edm:isShownAt rdf:resource="http://www.dlib.si/details/URN:NBN:SI:doc-LLVIPIYC" /></ore:Aggregation></rdf:RDF>