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Keywords:

  • alkenes;
  • electrophiles;
  • heterocycles;
  • selenium;
  • stereoselective synthesis
Thumbnail image of graphical abstract

Selective cyclizations of selenium electrophiles lead to either tetrahydrofurans or lactones (see scheme), depending on the counterions and additives. Modification of the selenium electrophiles allow selective cyclizations, irrespective of the reaction conditions applied.