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From the easily accessible resorcin[4]arenes, an unprecedented cyclization cascade generating fused 2,3\u2010dihydro\u20101H\u2010phenalenes has been developed to access expanded molecular belts. Stitching up the fjords through intramolecular nucleophilic aromatic substitution and ring\u2010closing olefin metathesis reactions furnished a highly strained O\u2010doped C<jats:sub>2<\/jats:sub>\u2010symmetric belt. The enantiomers of the acquired compounds exhibited excellent chiroptical properties. The calculated parallelly aligned electric (<jats:bold>\u03bc<\/jats:bold>) and magnetic (<jats:bold>m<\/jats:bold>) transition dipole moments are translated to the high dissymmetry factor (|<jats:italic>g<\/jats:italic><jats:sub>lum<\/jats:sub>| up to 0.022). This study provides not only an appealing and useful strategy for the synthesis of strained molecular belts but also a new paradigm for the fabrication of belt\u2010derived chiroptical materials with high CPL activities.<\/jats:p>","DOI":"10.1002\/anie.202301782","type":"journal-article","created":{"date-parts":[[2023,2,18]],"date-time":"2023-02-18T17:14:19Z","timestamp":1676740459000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Highly Strained Oxygen\u2010Doped Chiral Molecular Belts of the Zigzag\u2010Type with Strong Circularly Polarized Luminescence"],"prefix":"10.1002","volume":"62","author":[{"given":"Jia\u2010Hui","family":"Chen","sequence":"first","affiliation":[{"name":"Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education) Department of Chemistry Tsinghua University  Beijing 100084 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