4.8 Article

Highly Enantioselective Construction of Axial Chirality by Palladium-Catalyzed Cycloisomerization of N-Alkenyl Arylethynylamides

Journal

ORGANIC LETTERS
Volume 11, Issue 8, Pages 1805-1808

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol900373z

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Funding

  1. MEXT, Japan [20675002, 19350046]
  2. Grants-in-Aid for Scientific Research [19350046] Funding Source: KAKEN

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A cationic palladium(II)/(S)-xyl-Segphos complex catalyzes enantioselective cycloisomerizations of N-alkenyl arylethynylamides leading to axially chiral 4-aryl-2-pyridones in high yields with high ee values. The present catalysis represents the first enantioselective construction of axial chirality by the transition-metal-catalyzed cycloisomerization.

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