4.7 Article

Palladium-Catalyzed [2+2+1] Oxidative Annulation of 4-Hydroxycoumarins with Unactivated Internal Alkynes: Access to Spiro Cyclopentadiene-Chroman-2,4-dione Complexes

Journal

ADVANCED SYNTHESIS & CATALYSIS
Volume 356, Issue 2-3, Pages 319-324

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201300893

Keywords

CH activation; palladium-catalyzed oxidative annulations; [2+2+1] reactions; spiro complexes

Funding

  1. Singapore Ministry of Education [R143000443112, R143000532112]
  2. China Hubei Collaborative Innovation Project
  3. National Nature Science Foundation of China [21202136]

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Herein, we report our new results regarding a palladium-catalyzed [2+2+1] oxidative annulation of 4-hydroxycoumarins with unactivated internal alkynes, which affords a new class of compounds: the spiro cyclopentadiene-chroman-2,4-diones.

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