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The ensuing \u201cinterrupted\u201d nucleophilic addition by the pendent styrenyl olefin furnished the dihydro\u201011\n                    <jats:italic>H<\/jats:italic>\n                    \u2010benzo[\n                    <jats:italic>a<\/jats:italic>\n                    ]fluorene with the exclusive\n                    <jats:italic>cis<\/jats:italic>\n                    stereocontrol at the two\u2010carbon ring junction. Thus, from non\u2010chiral starting materials, the interrupted\n                    <jats:italic>iso<\/jats:italic>\n                    \u2010Nazarov reaction formed two rings and provided the olefin moiety, which can be functionalized to other groups\/systems possessing one to two additional chiral centers. Up to five contiguous stereogenic centers on the tetrahydrobenzo[\n                    <jats:italic>a<\/jats:italic>\n                    ]fluorene could be constructed efficiently.\n                  <\/jats:p>","DOI":"10.1002\/asia.70489","type":"journal-article","created":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T04:01:36Z","timestamp":1764907296000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Functionalized Dihydro\/Tetrahydrobenzo[\n                    <i>a<\/i>\n                    ]Fluorenes via Interrupted\n                    <i>Iso<\/i>\n                    \u2010Nazarov Reaction"],"prefix":"10.1002","volume":"21","author":[{"given":"Tanawat","family":"Phumjan","sequence":"first","affiliation":[{"name":"Program in Chemical Sciences Chulabhorn Graduate Institute  Bangkok 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