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Bi(OTf)3‑Mediated Cycloisomerization of γ‑Alkynyl Arylketones: Application to the Synthesis of Substituted Furans

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Figshare2016-02-14 更新2026-04-29 收录
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https://figshare.com/articles/dataset/Bi_OTf_sub_3_sub_Mediated_Cycloisomerization_of_Alkynyl_Arylketones_Application_to_the_Synthesis_of_Substituted_Furans/2189563
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A novel Bi­(OTf)3-mediated cycloisomerization of γ-alkynyl arylketones 4, 7, or 10 with molecular sieve (MS) in MeNO2 affords 3-substituted furans 3, 8, or 11 at rt for 3 h in moderate to good yields. The method provides mild, less-toxic, atom-economic and efficient conditions. The mechanism has been studied and proposed. Moreover, this route can be enlarged to gram scale.
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2016-02-14
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