Investigation of the Pechmann reaction between 2,7-dihydroxynaphthalene and ethyl a cetoacetate with different condensing agents.: Synthesis of benzocoumarin and benzochromone systems and their bi- and bis-derivatives

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dc.contributor.authorKolancilar, H
dc.contributor.authorOyman, Ü
dc.date.accessioned2024-06-12T11:17:54Z
dc.date.available2024-06-12T11:17:54Z
dc.date.issued2003
dc.departmentTrakya Üniversitesien_US
dc.description.abstractAttempts were made to synthesise the benzocoumarin and benzochromone systems by Pechmann reaction. As an extension, it was also planned to make bi- and bis-derivatives of these compounds. 2,7-Dihydroxy naphthalene (DHN) and ethyl acetoacetate (EAA) were chosen as starting materials and 80% H2SO4, PPA and HClO4 were used as condensing agents. H2SO4 gave a benzochromone with a low yield together with isomeric benzocoumarins. PPA gave angular benzocoumarin and benzochromone but no linear benzocoumarin was obtained. When HClO4 was employed the isomeric benzocoumarins were obtained with no indication of the formation of benzochromone ring. Attempts were also made to couple some of the compounds synthesised. Only one bi-benzocoumarin was obtained in one case. No angular benzocoumarin and angular benzochromone compounds gave the coupling reaction. Also, to obtain bis-derivatives, the Mannich reaction was applied.en_US
dc.identifier.endpage857en_US
dc.identifier.issn0019-4522
dc.identifier.issue9en_US
dc.identifier.startpage853en_US
dc.identifier.urihttps://hdl.handle.net/20.500.14551/24886
dc.identifier.volume80en_US
dc.identifier.wosWOS:000223694600014en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherScientific Publ-Indiaen_US
dc.relation.ispartofJournal Of The Indian Chemical Societyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCondensationen_US
dc.subjectCoumarinsen_US
dc.subjectChlorideen_US
dc.titleInvestigation of the Pechmann reaction between 2,7-dihydroxynaphthalene and ethyl a cetoacetate with different condensing agents.: Synthesis of benzocoumarin and benzochromone systems and their bi- and bis-derivativesen_US
dc.typeArticleen_US

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