{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T13:41:35Z","timestamp":1792590095361,"version":"4.5.0"},"reference-count":0,"publisher":"The Scientific and Technological Research Council of Turkey (TUBITAK-ULAKBIM) - DIGITAL COMMONS JOURNALS","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Turkish Journal of Chemistry"],"abstract":"<jats:p>2,3-dihydrofurans were synthesized from carbonyl-ylides via 1,5-electrocyclization reactions with high yields. Dimethyl diazomalonate was reacted with several \u03b2-alkoxy and\/or \u03b2-phenoxy \u03b1,\u03b2-unsaturated compounds in the presence of Cu(acac)$_{2}$ as a catalyst. From the reaction of \u03b2-methoxy enone with diazo compound, dioxole, and C\u03b1-H insertion products were also obtained as side products along with 2,3-dihydrofuran derivative. When the unsaturated compound has an ester and a ketone group, only one dihydrofuran derivative was formed, which occurred by the 1,5-ring closure of keto-carbonyl ylide. Dihydrofuran derivative from the formation of ester carbonyl ylide in the reactions was not obtained.<\/jats:p>","DOI":"10.55730\/1300-0527.3519","type":"journal-article","created":{"date-parts":[[2023,2,23]],"date-time":"2023-02-23T05:27:34Z","timestamp":1677130054000},"page":"81-87","source":"Crossref","is-referenced-by-count":2,"title":["Copper-catalyzed reactions of \u03b2-alkoxy\/phenoxy enones with dimethyl diazomalonate"],"prefix":"10.55730","volume":"47","author":[{"given":"F\u00dcSUN \u015eEYMA","family":"KI\u015eKAN","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"34691","published-online":{"date-parts":[[2023,1,1]]},"container-title":["Turkish Journal of Chemistry"],"original-title":[],"language":"en","deposited":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T12:58:36Z","timestamp":1792587516000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.tubitak.gov.tr\/chem\/vol47\/iss1\/10"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,1,1]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2023,1,1]]}},"URL":"https:\/\/doi.org\/10.55730\/1300-0527.3519","relation":{},"ISSN":["1300-0527"],"issn-type":[{"value":"1300-0527","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,1,1]]}}}