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Keywords:

  • cooperative catalysis;
  • cycloaddition;
  • cyclobutanes;
  • dienamine;
  • organocatalysis
Thumbnail image of graphical abstract

Trap it: A combination of aminocatalysis with H-bonding activation is used in two new approaches to carry out formal enantioselective organocatalyzed [2+2] cycloaddition reactions. This cooperative catalysis solves the inconveniences associated with this transformation. These two new reactions will open opportunities to find reactivities involving other organocatalytic cycloadditions.