{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T15:01:48Z","timestamp":1772118108719,"version":"3.50.1"},"reference-count":50,"publisher":"Wiley","issue":"27","license":[{"start":{"date-parts":[[2025,4,17]],"date-time":"2025-04-17T00:00:00Z","timestamp":1744848000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2025,5,14]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    In this study, we explore the cobalt\u2010mediated \u03b1\u2010activation of ketones within modified porphyrin macrocycles, focusing on the arylation processes and the influence of macrocyclic confinement on keto\u2010enol tautomerism. The activation of ketones such as acetone, butanone, 3\u2010pentanone, and acetophenone and their possible transfer from a cobalt center on the carbaporphyrin fragment results in the formation of new C(sp\n                    <jats:sup>2<\/jats:sup>\n                    )\u2500C(sp\n                    <jats:sup>3<\/jats:sup>\n                    ) bonds in confined macrocyclic environments of N\u2010confused porphyrin and azuliporphyrin. Such modified ligands allow for following altered keto\u2010enol equilibrium. They reversibly form unique structural motifs, azuleno[1,2\u2010c]pyran and 2,4\u2010dihydropyrano[3,4\u2010c]pyrrole modulated by acid\u2010base conditions and macrocyclic aromaticity. The coordination of a modified macrocycle to a rhodium(I) center leads to a series of complexes with a final form with rhodium(III) in the cavity. The rhodium(III) center cleaved the C(21)\u2500C bond and transferred the acetone fragment back to the metal ion from the azulene fragment.\n                  <\/jats:p>","DOI":"10.1002\/chem.202500906","type":"journal-article","created":{"date-parts":[[2025,3,27]],"date-time":"2025-03-27T13:24:36Z","timestamp":1743081876000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Cobalt\u2010Assisted \u03b1\u2010Activation of Ketones, Their Arylation and Keto\u2010Enol Equilibrium Confined into a Macrocycle"],"prefix":"10.1002","volume":"31","author":[{"given":"Kacper","family":"Szymanowski","sequence":"first","affiliation":[{"name":"Department of Chemistry University of Wroc\u0142aw  14 F. Joilot\u2010Curie St. Wroc\u0142aw 50\u2013383 Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wiktoria","family":"Bara","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Wroc\u0142aw  14 F. Joilot\u2010Curie St. Wroc\u0142aw 50\u2013383 Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4890-2156","authenticated-orcid":false,"given":"Micha\u0142 J.","family":"Bia\u0142ek","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Wroc\u0142aw  14 F. 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