4.8 Article

Palladium-Catalyzed Intermolecular Decarboxylative Coupling of 2-Phenylbenzoic Acids with Alkynes via C-H and C-C Bond Activation

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 40, Pages 14006-14008

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ja106130r

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Funding

  1. Alexander von Humboldt Foundation
  2. International NRW Graduate School of Chemistry
  3. Alfried Krupp von Bohlen und Halbach Foundation

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A novel protocol for palladium-catalyzed intermolecular formal [4 + 2] annulation of 2-phenylbenzoic acids with alkynes is described. Acridine is shown to be essential for the high reaction efficiency. Phenanthrene derivatives are formed in moderate to good yields without coupling (pseudo)halides or organometallic species.

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