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In this context, herein we developed a palladium\u2010catalyzed synthesis of silicon\u2010tethered fluorenes from diarylsilanes through a palladacycle formation from a silacycle via a two\u2010fold C\u2500Si bond\u2010activating Si\/Pd exchange process. The reaction can be conducted in combination with several nucleophiles such as H\n                    <jats:sub>2<\/jats:sub>\n                    O, carboxylic acids, and phenols to provide fluorene\u2010attached silanols, silyl esters, and silyl ethers in a modular fashion. Experimental and theoretical mechanistic investigations were also performed, elucidating a plausible reaction pathway for the formation of a palladacycle from a silacycle, which was found to be significantly accelerated by the assistance of an acetate ligand.\n                  <\/jats:p>","DOI":"10.1002\/chem.71826","type":"journal-article","created":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T03:28:41Z","timestamp":1792726121000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Double C\u2500Si Bond\u2010Activating C\u2500C Bond Formation: Palladium\u2010Catalyzed Synthesis of Silicon\u2010Tethered Fluorenes via Silacycle\u2010to\u2010Palladacycle Si\/Pd Exchange"],"prefix":"10.1002","author":[{"given":"Daigo","family":"Hayashi","sequence":"first","affiliation":[{"name":"Division of Chemistry Department of Materials Engineering Science Graduate School of Engineering Science The University of Osaka  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