Gold‐Catalyzed Intramolecular Tandem Cyclization of Alkynol‐Tethered Alkylidenecyclopropanes to Construct Naphthalene‐Fused Eight‐ to Eleven‐Membered Cyclic Ethers

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A gold‐catalyzed intramolecular tandem cyclization of alkynol‐tethered alkylidenecyclopropanes was reported in this paper, providing a synthetic route to access naphthalene‐fused eight‐ to eleven‐membered cyclic ether derivatives in moderate to good yields. On the basis of control experiments and DFT calculations, a reasonable reaction mechanism involving a gold carbene intermediate was proposed, which was formed via the 6‐endo‐dig enyne cyclization process. magnified image