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Keywords:

  • asymmetric catalysis;
  • Brønsted acids;
  • heterocycles;
  • Michael addition;
  • synthetic methods
Thumbnail image of graphical abstract

Two ways to win: The title reaction has been realized using chiral phosphoric acid catalysts to provide the heterocyclic products in excellent yields and with high ee values. The polycyclic indoles were also constructed using an olefin cross-metathesis/intramolecular aza-Michael addition sequence.