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Keywords:

  • alkenes;
  • copper;
  • Michael addition;
  • synthetic methods;
  • zirconium
Thumbnail image of graphical abstract

Pure and simple: Alkylzirconocenes generated in situ from simple alkenes are used in highly enantioselective copper-catalyzed 1,4-addition reactions to trisubstituted cyclic enones to generate quaternary centers. These reactions operate at room temperature under a range of conditions and tolerate many functional groups. Cp=cyclopentadienyl, Tf=trifluoromethanesulfonyl.