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Keywords:

  • allenylation;
  • asymmetric catalysis;
  • propargylation;
  • silver;
  • tertiary alcohols
Thumbnail image of graphical abstract

More than a silver lining: Certain silver complexes are capable of selective catalysis of either allenylation or asymmetric propargylation reactions of ketones. Ligand-free conditions lead to allenyl alcohols as the major product, whereas ligation with Walphos-8 gives enantioenriched homopropargyl alcohols. This method can be applied to reactions of prochiral diarylketones to provide optically enriched tertiary diaryl alcohols.