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Org. Chem."],"accepted":{"date-parts":[[2025,7,23]]},"abstract":"<jats:p>\n                    The intramolecular oxidative fusion reaction of macrocyclic heteroaromatic arrays has provided strained polycyclic heteroaromatic macrocycles as promising functional molecules. In this study, we prepared an\n                    <jats:italic>ortho<\/jats:italic>\n                    -phenylene-pyrrole-thiophene hybrid icosamer, as the largest cyclic array in the series. The oxidative fusion reaction with [bis(trifluoroacetoxy)iodo]benzene (PIFA) afforded a cyclophane-type aza[5]helicene-incorporated macrocycle, the structure of which was unambiguously revealed by X-ray diffraction analysis. Its optical properties have been investigated in detail.\n                  <\/jats:p>","DOI":"10.3762\/bjoc.21.119","type":"journal-article","created":{"date-parts":[[2025,7,31]],"date-time":"2025-07-31T12:57:46Z","timestamp":1753966666000},"page":"1561-1567","source":"Crossref","is-referenced-by-count":1,"title":["Synthesis of an aza[5]helicene-incorporated macrocyclic heteroarene via oxidation of an\n                    <i>o<\/i>\n                    -phenylene-pyrrole-thiophene 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