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Keywords:

  • catalyst recycling;
  • electrochemistry;
  • gold;
  • homogeneous catalysis;
  • phosphenium cations
Thumbnail image of graphical abstract

Cationic but electron-rich: Cyclopropenylylidene-stabilized phosphenium cations exhibit the electron richness of classical trialkyl and triaryl phosphines even though they carry a positive charge stemming from a cationic substituent directly bonded to the phosphorous atom. These two facts have been exploited to synthesize gold catalysts that can be easily recycled after use.