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Updated: Nov 2, 2025

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Lewis Acid Mediated Domino Intramolecular Cyclization: Synthesis of Dihydrobenzo[a]fluorenes
Dakoju Ravi Kishore1, Chander Shekhar1, Gedu Satyanarayana1
1Department of Chemistry, Indian Institute of Technology (IIT) Hyderabad, Kandi 502 285, Sangareddy District, Telangana, India.
Abstract:
An efficient and facile method for the regioselective synthesis of novel dihydrobenzo[a]fluorenes from readily accessible alkynols is presented. The current strategy triggers the formation of a dual C-C bond intramolecularly via Lewis acid catalysis under mild reaction conditions. Notably, secondary as well as tertiary alcohols bearing an alkyne moiety have been smoothly transformed into the corresponding products. As a result, novel tetracyclic dihydrobenzo[a]fluorenes have been accomplished using this approach.
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