ArticleOrganic letters2025
Iodine(III)-Mediated Cyclization Cascade of Diynes to Benzofulvene Derivatives.
Article in Organic letters, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We report here a concise and regioselective synthesis of benzofulvene derivatives via an iodine(III)-mediated cyclization cascade of diynes. For 1,2-dialkynylbenzene substrates, the iodanylative cyclization is accompanied by triflation or fluorination, depending on the iodine(III) reagent, affording stereodefined benzofulvene derivatives. In contrast, the reaction of 1,6-diyne substrates is terminated by intramolecular Friedel-Crafts cyclization to deliver fused benzofulvene frameworks. A representative triyne was also shown to participate in an analogous cascade, furnishing functionalized cyclopenta[
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