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Keywords:

  • asymmetric synthesis;
  • organocatalysis;
  • synthetic methods;
  • tetrahydroxanthones;
  • trienamines
Thumbnail image of graphical abstract

Right direction: The presented enantioselective strategy for the preparation of diversely functionalized tetrahydroxanthones is based on a trienamine-mediated cycloaddition between 2,4-dieneals and activated chromones. It is possibile to control the stereochemical outcome of such reactions by employing an H-bond-directing aminocatalyst.