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![K2S2O8‐induced Dearomative Spirocyclization of Biaryl Ynones with Diselenides toward Selenated Spiro[5.5]trienones](https://onlinelibrary.wiley.com/cms/asset/d0eb0a76-4838-41f0-949b-b9d1cba5c57f/ajoc202300086-toc-0001-m.png)
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K2S2O8‐induced Dearomative Spirocyclization of Biaryl Ynones with Diselenides toward Selenated Spiro[5.5]trienones
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A metal-free synthesis of spiro[5.5]trienones with chalcogen substituents has been achieved via K2S2O8-induced dearomative spirocyclization of biaryl ynones with dichalcogenides.
Abstract
A metal-free radical spirocyclization of biaryl ynones with diselenides is developed, providing selenated spiro[5.5]trienones in moderate to good yields. This protocol features broad substrate scope, good functional group tolerance and free of an inert atmosphere. Furthermore, the replacement of diselenides with ditellurides is also applicable for this reaction to construct the corresponding tellurium-substituted spiro[5.5]trienones.
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