Abstract

AbstractThe successive addition of sodium ethoxide and TBSOTf (or TMSOTf) to alkynyl esters tethered to bicyclo[n.2.0]alkanones (n = 3–5) promoted a domino anionic reaction and a Dieckmann condensation, respectively, which led to 5‐6‐5, 6‐6‐5, and 7‐6‐5 tricyclic fused ring systems. These systems represent relevant substructures of numerous bioactive compounds.

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