4.8 Article

Diastereoselective Synthesis of Bicyclo[3.3.0]octenones by Copper-Catalyzed Transannular Ring-Closing Reaction

Journal

ORGANIC LETTERS
Volume 24, Issue 32, Pages 5924-5928

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.2c02163

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Funding

  1. National Natural Science Foundation of China [21871087]
  2. Open Research Fund of the Key Laboratory of Polar Materials and Devices, Ministry of Education

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A novel and efficient copper-catalyzed transannular ring-closing reaction of eight-membered rings has been developed, providing a straightforward way to synthesize bicyclo[3.3.0]-octane derivatives in good yields. Mechanistic studies suggest that the reaction pathway may involve chlorination followed by the Kornblum reaction. The readily accessible starting materials and good functional group tolerance make this procedure attractive.
A novel and efficient copper-catalyzed transannular ring-closing reaction of eight-membered rings has been developed that provides a straightforward way to synthesize bicyclo[3.3.0]-octane derivatives in good yields. Mechanistic studies revealed that the reaction pathway might involve chlorination followed by the Kornblum reaction. Readily accessible starting materials and good functional group tolerance make this procedure attractive.

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