SEARCH

SEARCH BY CITATION

Keywords:

  • allenes;
  • carbocations;
  • cyclization;
  • Nazarov cyclization;
  • silver
Thumbnail image of graphical abstract

Easy as pie: Expedient access to aryl-substituted benzofulvenes is described. α-Hydroxyallenes 1 that bear two aryl groups at C1 (red circle) are directly transformed into these products at room temperature by using silver triflate as a catalyst or Brønsted acids. The transformation involves dealkoxylation and subsequent 4π electrocyclization (Nazarov reaction).