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[{"key": "dc.contributor.advisor", "value": "Pihko, Petri", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Tarkkonen, Eeki", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Mondal, Pradip", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Silvasti, Teemu", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-08-12T06:28:27Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-08-12T06:28:27Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/96560", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4n pro gradu -tutkielman kirjallinen osa k\u00e4sittelee kahden eri homogeenisen katalyytin reaktioita. Tutkielmassa syvennyt\u00e4\u00e4n m\u00e4\u00e4ritt\u00e4m\u00e4\u00e4n mit\u00e4 t\u00e4m\u00e4nkaltaiset reaktiot ovat ja miten ne kineettisesti voidaan m\u00e4\u00e4ritt\u00e4\u00e4 olevan toista kertalukua katalyytin suhteen tapauksissa, jossa katalyytit ovat identtisi\u00e4 yhdisteit\u00e4 sek\u00e4 mit\u00e4 mahdollisia ongelmia ja haasteita t\u00e4m\u00e4n m\u00e4\u00e4ritt\u00e4misen puolesta on olemassa. Kokeellinen osa puolestaan k\u00e4sittelee bifunktionaalisella tioureakatalyytill\u00e4 katalysoitua Pfau-d\u2019Angelo-reaktiota, miss\u00e4 reaktion kirjallisuudessa kuvattu huono saanto viittasi edell\u00e4mainittujen ongelmien l\u00e4sn\u00e4oloon. T\u00e4m\u00e4n lis\u00e4ksi kokeellisessa osassa haluttiin n\u00e4hd\u00e4, pystytt\u00e4isiink\u00f6 n\u00e4it\u00e4 ongelmia ratkaisemaan ja k\u00e4ytt\u00e4m\u00e4\u00e4n organokatalyytti\u00e4 k\u00e4ytt\u00e4m\u00e4\u00e4n tutkimusryhm\u00e4ss\u00e4 tutkitun humilisiini E:n synteesin Pfau-d\u2019Angelo vaiheeseen.\nMonet katalyytin suhteen toisen kertaluvun reaktiot eiv\u00e4t ole kahden katalyytin reaktioita laisinkaan, sill\u00e4 useat tekij\u00e4t saattavat h\u00e4irit\u00e4 katalyytin kertaluvun suuruutta erin\u00e4isin tavoin antaen v\u00e4\u00e4r\u00e4n kuvan reaktion kineettisest\u00e4 luonteesta. T\u00e4m\u00e4 voi johtaa v\u00e4\u00e4riin johtop\u00e4\u00e4t\u00f6ksiin erityisesti reaktiomekanismeja esitt\u00e4ess\u00e4. Kirjallisen osan alkup\u00e4\u00e4 pureutuu visuaalisin kineettisiin menetelmiin mahdollisina vaihtoehtoina toisen kertaluvun m\u00e4\u00e4ritt\u00e4miseen ja ohessa k\u00e4yd\u00e4\u00e4n l\u00e4pi katalyytin inhibiitio, saturaatiokinetiikka ja autokatalyysi vaihtoehtoisina syin\u00e4 v\u00e4\u00e4riin tulkintoihin katalyytin kertaluvusta. T\u00e4m\u00e4n j\u00e4lkeen kirjallisuudesta nostetaan esiin useita julkaisuja, joissa v\u00e4it\u00f6ksin\u00e4 on katalyytin suhteen toinen kertaluku ja reaktioiden esittelyn j\u00e4lkeen analysoidaan, pit\u00e4\u00e4k\u00f6 julkaisujen esitt\u00e4m\u00e4 v\u00e4ite riitt\u00e4v\u00e4sti perusteltua erin\u00e4isin tavoin, erityisesti kineettisesti.\nKokeellisessa osassa l\u00e4ht\u00f6kohtana oli ensin valmistaa reaktion katalyytin kaltainen yhdiste ja sitten k\u00e4ytt\u00e4\u00e4 sit\u00e4 Pfau-d\u2019Angelo reaktioon katalyyttin\u00e4. Reaktiota analysoitiin kromatografisin menetelmin konsentraation m\u00e4\u00e4ritt\u00e4miseksi eri ajanhetkill\u00e4, jotta reaktiosta voitiin muodostaa reaktiokineettinen aikakonsentraatioprofiili kahdessa eri l\u00e4ht\u00f6ainekonsentraatioissa. T\u00e4m\u00e4n profiilin avulla pyrittiin m\u00e4\u00e4ritt\u00e4m\u00e4\u00e4n tapahtuuko reaktiossa katalyytin inhibiitiota. T\u00e4ss\u00e4 m\u00e4\u00e4rityksess\u00e4 onnistuttiin ja saadun datan perusteella pystyttiin esitt\u00e4m\u00e4\u00e4n, ett\u00e4 katalyytti myrkyttyy reaktiossa. Katalyytti paljastui my\u00f6s toimimattomaksi humilisiini E:n synteesin Pfau-d\u2019Angelo -vaiheeseen.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2024-08-12T06:28:27Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-08-12T06:28:27Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "219", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.title", "value": "Kahden homogeenisen katalyytin katalysoimat reaktiot", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202408125436", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Kemian laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Chemistry", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Orgaaninen kemia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Organic Chemistry", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4035", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kemia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "katalyytit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "orgaaninen kemia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "opinn\u00e4ytteet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "reaktiot", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "reaktiomekanismit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "katalyysi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "tutkielmat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "orgaaniset yhdisteet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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