4.7 Article

Enynone-enabled migratory insertion and Schmittel cyclization cascade for the synthesis of furan-fused fluorenes

期刊

ORGANIC CHEMISTRY FRONTIERS
卷 6, 期 8, 页码 1118-1122

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/c9qo00045c

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资金

  1. NSFC [21871096, 21672071]
  2. Ministry of Science and Technology of the People's Republic of China [2016YFA0602900]
  3. NSF of Guangdong [2018B030308007, 2018A030310359, 2016A030310433]
  4. China Postdoctoral Science Foundation [2018M633042, 2018M643062]

向作者/读者索取更多资源

A new method for the synthesis of furan-/benzo-fused fluorenes through copper(i)-catalyzed coupling of conjugated enynones or -diazocarbonyl compounds with dialkynylbenzenes has been developed. This process includes 5-exo-dig cyclization, carbene migratory insertion, Schmittel cyclization and 1,5-H transfer. The obvious advantages of wide substrate scopes, mild reaction conditions, and high atom efficiency make this system highly appealing for the construction of six-substituted benzofuran-embedded fluorenes in a one-pot manner.

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