4.6 Article

Isolation of Cp*CoIII-Alkenyl Intermediate in Efficient Cobalt-Catalyzed C-H Alkenylation with Alkynes

Journal

CHEMISTRY-A EUROPEAN JOURNAL
Volume 24, Issue 2, Pages 342-346

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201705183

Keywords

C-H bond alkenylation; hydroarylation; mechanisms; molecular Cp*Co catalysts; reaction mechanisms; reactive intermediates

Funding

  1. SERB [EMR2016/000136, PDF/2016/003710]
  2. IITK
  3. CSIR

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A general and efficient procedure for C-H alkenylation of arenes with a broad substrate scope catalyzed by Cp*Co-III was demonstrated with alkynes. A highly selective mono-alkenylation and sequential bis-C-H bond functionalization was displayed to exemplify the versatility of the cobalt catalyst. Isolation of cationic Cp*Co-III-alkenyl intermediate was achieved under identical catalytic conditions to further establish the proposed pathway.

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